BACKGROUND OF THE INVENTION

The present invention generally relates to an apparatus and method for transferring cargo, including transferring cargo between an aircraft and a ground transportation vehicle. The invention allows for the transferring of cargo in a number of scenarios and environments, including accounting for spatial restraints imposed by the structure of aft-Joading aircraft.

Cargo transferring systems are known for transferring aircraft cargo, such as containers, equipment and vehicles, to and from ground transportation vehicles, such as trucks and trailers. Two such transferring systems are available from Stewart & Stevenson of Sealy, Texas, and are known as the Family of Medium Tactical Vehicles (FMTV) Loading Handling System and the Medium Tactical Track Demonstrator (MTTD). These transferring systems employ L-arm hoist assemblies and/or overhead booms which require a substantial amount of overhead clearance, rendering them unsuitable for transferring aircraft cargo given the confining spatial envelope caused by the presence of the aircraft, and the elevated aircraft loading ramp. Such cargo transferring systems may also employ beds which may not load evenly with the aircraft loading ramp.

Accordingly, it would be advantageous to provide a transferring apparatus and method for quickly and efficiently transferring aircraft cargo within the spatial constraints caused by the presence of the aircraft and/or an elevated aircraft loading ramp. SUMMARY OF THE INVENTION

The present invention may be used to transfer cargo, including transferring cargo between an aft-loading aircraft and a ground transportation vehicle, while operating

within the spatial envelope of fte aircraft and an elevated loading ramp. This is generally accomplished by securing and moving the cargo in a manner that allows for generally

A prdtøed estbettifseaJ ©f the isveatioa iaehides a tilt Same, a transϊer bed, mά an adjustable heigtø carri^e. The tilt ftsrae is pveϊaUy engaged to a vehicle chassis, mi has a first mά mess the cab of &e vehicle and a second end distal from the cab. The transfer bed has a first end movable along fee upper surface øf the tilt frame, The adjustable height carriage supports the second end of the transfer bed. The transfer feed may be leveled at varying heights by varying at least one: the height of the carnage; and the height of the Sm ead of the transfer bed by moving it along the upper surface of the tilt frame, ϊn another inferred erafeodimem, the mvestiøa includes a pivoting tilt frame and a transfer bed. The pivoting tilt frame is supported by the vehicle ehassis. The transfer bed is pivotally connected at a first esd to ike tilt frame, and has a second ead in engaged OJϊnmunicatrøn with a loading dock αf an aircraft. Th® invention allows the cargo from the aircraft to be received by the transfer bed, and also allows the cargo to be transported from the transfer bed into the aircraft The transfer bed includes an upper surface on which the cargo rests, and the upper surface of the transfer bed is capable of selective ave)

One method of practicing the invention includes the steps of: (A) pivotally raising a first end of a tilt frame engaged to the vehicle chassis, (B) leveling a transfer bed by at least one of: (i) moving a first end of the transfer bed along an upper surface of the tiit ftame; and (U) adjusting the height of a carriage supporting the second end of the transfer

« 3 -

bed until the transfer bed Is level; (C) polling the cargo onto a second ead of the transfer bed; (D) pulling the transfer bed onto the tilt frame; and (E) lowering the tilt frame.

Other systems, methods, features, ami advantages of the present kveniioa will be, or will become, apparent to one having ørdkiary skill m the art upon exarøinatioa of the f<αt©wiag dr&wiags and detailed 4ssm≠m> U is iatmM that all saeh additional system, me&ods, features, and advantages be Jscluded within this description, be withte tfee scope of the preset invention, said W protested by the accompaayiag claims. BRIEF DESCRIPTION OF THE DRAWINGS

The novel features wϊύggi are characteristic of the invention are set fortfe in the appended claims. The invention itself, however, together with ftather objects atπi attendant advantages thereof, can be better understood by reference to the following

FIOURE 1 is a perspective view of an aircraft having as aft-ioadmg ramp, and a

FIGURE 2 is a skie view of the transferring system and the aft-loading aircraft of

FIGURE 3 is a perspective view of the tilt frame and transfer bed portions of the transferring system of FIGURES 1 smά 2;

FIGUEE 4 is a top view of the fctmsferriag system illustrating the lateral flexibility associated with the use of a tilt fraπse trolley haviag a meshing wheel (partially

FIGURE 5 is a perspective view of a preferred Rapid Attach™ corttainer interface (RACI) device of the trøftsfβrriag system of the present invention;

-4 -

FIGURE 6 A is a first perspective view of the RACI of FIGURE 5 showing the

FIGURE SB is a perspective view of another side of the corner fitting of a

FIGURE 6C is a second perspective view of ύts RACI of FIGURE 5 showing &s opes RACI over the corner fitting of the shipping container,

FIGURE 7A is a third perspective view of the RACI of FIGURE 5 showing the closed RACI over the corner fitting of the shipping coatamer;

FIGURE 7B h a fourth perspective view of t&e RACI of FIGURE 5 showing the closed RACI over the comer fitting ofthe shipping container,

FIGURE 8 is a side view of i» closed RACI of FIGURE 5, illiisfeatisg &e attachment of a bracket and a step;

FIGURE 9 is a first perspective view of &e RACI of FIGURE 5, shown άvm&

1-4;

FIGURE 10 is a second perspective view of the RACI of FIGURE 5 _t show**

FIGURE H is a top perspective view of the meshing wheel of FIGURE 4;

FIGURE 12 is a top perspective view of the meshing wheel os the trolley of FIGURE 4;

FIGURE 13A is an exploded bottom perspective view of the meshing wheel of FIGURES 11 and 12 illustrating the connection to the transfer bed of FIGURE 3;

FIGURE 13B is a top perspective view of Um meshing wheel of FIGURES 11 and 12 illustrating the connection to the transfer bed of FIGURE 3;

- 5 -

FIGURE 14 is a perspective view of the tilt fraaae and trolley of FIGURE 12 in a first pβsitioa m &s tiit ffeeaβ of FIGURES i-4;

H0URE 15 is a perspective view of the tilt føβae aad trolley of FIGURE 12 in a seeαad pamάm oa the tile frame of FIGURES 1-4;

FiGUEES IδA and 16B are bottom perspective views of a retractable pintle device associated with the traasfer bed of FIGURES 1-4;

FIGURES 17A-17C are sequential side views illustratis^ how cargo may be tras&ferred irørø an aircraft, as shown in FIGURE 2, to the eiϊassis of a vehicle; and

FIGURES ISA- ISD am sequential side views illastrating how cargo may be traasferred &om the grouad to the transfer bed of FIGURES 3 aad 4

The components in the drawisgs are sot necessarily to scale, empfeasis iisMead beisg placed upon clearly illustrating the principles of die presect invention, in the drawings, like reference numerals designate coirespondiag parts throughout the several vtews. DEFINITION OF CLAIM TERMS

Hie following terms are used in the claims of the patent as filed ami are røtended to have their broadest meaning consistent with the requirements of law. Where alternative meanings are possible, the broadest jneaniag is intended. All words used Ia the claims are intended to be used in the normal, customary usage of grammar and the English language.

Ia the claims, the "tilt frame" is any structure capable of supporting cargo loaded on a transfer bed, aad that pivots on a vehicle chassis.

.6.

In the claims, "transfer bed" is any structure capable of height adjustment that supports cargo being transferred from a loading ramp or dock, and thai may at least partially overlie and be supported by a tilt frame.

. its tail DETAILED DESCRIFIION ^■

Set forth below is a description of what are believed to be the preferred embodiments aitd/or best examples of the invention claimed. Future and preseat aitematives asd modifications to the preferred eiabodimeuts are eonieraplated. Aay alteratives or modifications wiaeh make iasubstastiaS ehssges in fuoctioa, is purpose, ia structure, or in result are attended to be covered by tfcte claims of this patent.

The present invention geaera% relates to as apparatus and method for traasferøsg cargo. The invention allows for the transfer of cargo in 8 number of seβaarios sad environments. Applications for the invention iisclude teassfαErøϋ cargo between an aircraft aad a ground transportation vehicle, and from the grouad to the poand tmωsportøtioii vehicle. The iBveπtioϊi provides for accomplkhing such ta^cs within the spatial constraints imposed by military aircraft For example, central-body loading military aircraft, sueh as the €-17 and C- 130, provide problematic spatial constraints associated with an aft-loadiag ramp beneath the tail portion of the aircraft. The present invention addresses the problems associated with the prior art L-axn\ hoist assemblies and/or overhead booms which have bees found to undesirably conflict with the spatial constraints associated with aircraft such as the C-17 and C-130,

.7 -

Preferred embodiments of the present invention an? provided below in which the cargo is transferred to and from the aircraft ia a more horizontal maaae*. These new me&αds and systems for transferring cargo m&γ use a number of new devices and steps, sack as but not limited to: (I) a new device aad method for engaging the cargo (see the EAO description arid FIOUKES 5- IQ); (2) a asvv device aod method for iransfesriHg the cargo betweeu the aircraft aad grouad transportation vehicle, iacludisg a tilt frame and retractable transfer bed; (3) a oew device aad aaethαd for levdiag the transfer bed; aad (4) a sew device aad method for engaging and moving the transfer bed in relationship to

Ia brief, cargo 28 (FSOtFRE I) iaay be loaded onto vehicle chassis Iδa from any location using the retractable deck combination ftrøαed fey tilt frame 24 and transfer bed 2ø. Cargo 28, which røay take the fotra of a shipping container 2Sa (FlOURE 2), may be engaged using a Rapid Attach ™ container interface (EACI) mechanism 50 (FIGURE 5), RACl 50 and cargo 2Sa may be puUed onto mmfeε bed 26 via straps 70 (FIGUEBS S- 10) and transfer bed trolley 26b (FIGURE 3). Transfer bed 26, with cargo 28a, may be pulled oMo tilt frame 24 using me&hing wheel 32 (FIGURES 4, U-13B) that prvctaliy attaches transfer bed 26 to tilt &ame 24. Meshing wheel 32 may be mounted on tilt ftame trolley 24a (FIGURES 2 rød 4) and secured to a forward portion of transfer bed 26 (as SϊMWB in FIGUEE 4). Tilt ftame trolley 24a and mssbiag wheel 32 may thea travel forward and/or upward on an upper surface 24k (FIGURE 3) of tilt tome 24 until cargo container 28a rests on vehicle chassis 18a. Cargo 28 may also be transferred between vehicle IS aad aircraft loading ramp 10b (FIGURE 2) using the retractable deck

combination formed by tilt frame 24 aad transfer bed 26, where transfer bed 26 is adjustable to the height of loading ramp 10b.

Provided below is a more detailed description of the cargo transfer system, iackidi&g subsections providing i&ore detailed deseriptiøas of KACI 50, meshing wheel 32, amJ vaπom rø^ods t>f operating the cargo transfer sy^em. Tføs description and the references to "preferred" and "new" devices mά steps are intended to provide context mά informatloa associated with the cargo transfer system, wiϋrøui limiting the claims

CARGO TRANSFER SYSTEM

RβiferøBg initially to FIOUHBS 1 asd 2, m aircraft 10 sad portions of transferring system 20 are shown. FIGURE I shows an aircraft 10 having a loading raaap 10b, ia this ease an aft-loading ramp, vehicle 18, and portions of Use tramfeπiag system 20, including tilt frame 24 aad transfer bed 24. Ia FIGURE 1, cargo 28 is shown moving in the direction indkaϊed by arrow 14 &om the eargo bay 10a of aircraft 10 to transfer bed 26.

FiGUEUE 2 shows aside view of aircraft 10 on the grouisd 12 and skms tilt frame 24 and transfer bed 26 is a typical configuration for the transfer of cargo 28 between aircraft 10 and vehicle chassis ISa. M some embodiments, transferring system 20 includes vehicle chassis 18a, tilt frame 24, and transfer bed 26. Ia additional embodiments, transferring system 20 includes methods for transferring cargo 28 from aircraft 10, to tratntsfer bed 26, and tfeen onto vehicle chassis 18a.

Referring to FIGUlUB 2, loading tamp 10b is hinged to aircraft 10 M hinge poiat 10c. Loading ramp 10b may be used to access cargo bay 10a of aircraft 10. lite floor (not shown) of cargo bay 10a may be approximately 32 incites above ground 12 ia the

.9-

case of a C-130 aircraft, asd approximately 62 inches above ground 12 in the case of a C- 17 aircraft, so it is preferable to provide a loading device which can accosHrκκiate a loading ramp having heights of at least this variance. Cargo bay 10a may include "roll oa/roM off ^* rollers {BO* sh&vm but k∑fcows to those having ordinary skill in the art) for eSkie-Bt handling of cargo pallets. Loading ramp Wh may be hydraulicaJly operated mά may also include features for effidently transferring cargo, sαsh as the "roll on/roll off tellers.

71» distance between loading ramp 101» and the top of cargo bay 10a presents spatial impediments to the efficient loading and unloading of aircraft 10. Ia addition, the distance between ground 12 asd the tail portion of aircraft 10 presents spatial impediments to the efficient loading and unloadiog of aircraft 10. For example, in the case of a C-130 aircraft, unloading equipment with a winch and hook is problematic because there is only about 102 niches of usable distance between the eisd of ramp 10b sad the top of aircraft bay I Oa when ramp 10b Is level with the floor of cargo bay IOa (allowing 6 inches of clearance at the top of the bay 10s), Also, in the case of a C-130 aircraft, the usable width of the bay is approximately 105 inches (allowing 6 inches on each side and allowing for the permanently installed rail system {not shown) is the bay 10b). Is the case, of a (M? aircraft, there is only about 142 inches of usable distance between the end of ramp 10b and the top of aircraft bay 10a when ramp 10b is level with the floor of cargo bay IOa (allowing 6 inches of ceiling clearance). Also, in the case of a C-17 aircraft, the usable width of the bay is approximately 196 inches (allowing 6 inches of wait clearance). Although tlι@ dimensional impediments are described herein in regard to aircraft 10, similar dknenskmal impediments exist in regard to transporting cargo to

- 10-

and from other transporting crafts, such as, but not limited to, other aircraft, ships, and trucks.

Wtaily, cargo 2$ may fee transferred between aircraft 10 and vehicle chassis ISa em

(a) a ceiling at the height of the transom above ramp 10b; (b) a widώi subtly less thas Use width of ramp lOfe, for example, in the case of a C- 130, a width of 105 ladies which is slightly less than the width of tfcs ramp on a C-BO, wi& the width co-ceatered with ramp 10b; and (c) a length sufficient to allow clearance, asd a margin for error, to prevent cargo 28 and equipment for traasferring the cargo, from striking aircraft 10. For example, in the case of a C-130, the length sufficient to allow clearance is 30 feet from Mnge point iOc to the rear of aircraft 10. Ideally, both cargo 28 and the equipment used to transfer cargo 2S remain within the spatial envelope as cargo 28 is transferred between aircraft 10 and vehicle chassis 18a.

fmm aircraft 10 and other cargo transports while remaiakig within the spatial envelope. Vehicle chassis 18a may be a variety of vehicle ehasses, such as virtually any Class 7 or Class S track chassis, such as but not limited to the Family of Medium Tactical Vehicle (FMTV) chassis. Vehicle chassis ISa may be mounted ∞ any vehicle 18 capable of

As shown k FIGURE 2, tilt frame 24 m&γ be attached at a generally forward portion to chassis ISa via cylinder 33 between attachment poiat 30a and attachment point 30b. Cylinder 30 inay raise and Sower til. frame 24 such that tilt frame 24 pivots sear the back of vehicle chassis ISa. Ia addition to usieg a cylinder SO, tilt frame 24 may be

- 11

attached to vehicle chassis !Sa is a variety of manners, such as but not limited to, those described ta U.S. Pat Nos.: 5J79.43ϊ; 6,817,825; mά 6,52&,736, which aie each fcfty

Tilt frame 24 may be attached to transfer bed 26 ia a asaaaer that allows the generally forward portion of transfer bed 26 to travel along the upper surface 24k of tilt frame 24, One maoaer of allowing such travel is by uskg a tilt fmm trolley 24a m& aa associated meshiϊϊg wheel 32 P ⁷ IGUKE H) as described ia greater detail below with regaid to PIGUKES 4 ami 1145.

Again referring to FIGURE 2, transfer bed 26 may include adjustable carriage 34. Adjustable carriage 34 may include rear wheels 34a, support struts 34b, and support posts 34c. The height of adjustable carriage 34 may be adjusted through a number of adjustable mechanisms, such as but not limited to, a hydraulic mechanism that changes file distance between the upper surface 26a (see FIGURE 3) of transfer bed 26 mi tear wheels 34a. The adjustabk mechanism permits cargo 28 transfer to/frøm several different heights of loading platforms, aot limited to various aircraft loading ramjps 10b. If desirable, the wheels 34a on different sides of the traasfer bed 26 may act iβdependeatly for the purpose of leveling the transfer bed 26 with ramps 10b about the roll axis 26s (see FIOUKB 3). For exampϊe, the independent adjustment mechanisms m&y be used to level the upper surface 26s with the ramp 26b on grousd 12, even if the ground 12 is uneven.

Referring sow to FIOUEES 3 aiκi 4, vehicle chassis ISa, tilt frame 24, and transfer bed 26 are shovm. TiIi frame 24 allows transfer bed 26 and cargo 28 to be transferred to and 6om vehicle chassis 18a without exceedsBg the spatial envelope. Tilt

- !2 -

frame 24 may include UIt frame trolley 24a (also see HGURES 14*15) that may travel on tilt frame tracks 24b. Trolley 24a may be moved on tracks 24b using tilt frame motor 244 (Mt 24e, δrst gear 24£ and second gear 24g. Meshing wheel 32 (also see FIGURES 11-15) may be secured to trolley 24a using coHvestiouai festeuers, such as bolls. Motor 24d provides a motive force which is communicated to trolley 24a via chain 24e, first gear 24f aad second gear 24g. As trolley 24a travels on the upper surface 24k of tEt Same 24, the trassfer bed 26, to which trolley 2% is secured, moves onto, or off of, tih lrame 24.

Transfer bed 26 allows cargo 28 to be transferred to aad from aircraft 10 without exeeedϊag the spatial envelope, and allows for cargo 28 to be transferred at the same level as loading ramp 10b. Transfer bed 26 may include transfer bed trolley 26b that may travel βa transfer bed tracks 26e. Trolley 26b may be moved on tracks 26c using transfer bed motor 2όf, «aak 26Ji, third gear 26k, and fourth gear 26m. Motor 26f provides a motive force which is eommuaicated to trolley 26b via ehato 26h, third gear 26k, and fourth gear 26m, When loaded, movement of trolley 26b towards tilt frame 24 results ia movement of cargo 28 toward tilt frame 24. Transfer bed end rollers 26a allow for the smooth teansatioa of cargo betwees groϋisd 12 aad transfer bed 26. Transfer bed 26 may also ineiiKie itabedded retractable "roll oo/roll off rollers 26r for moving cargo 28 Oϊ5 the upjϊer aafaee 26a of ixmsfet bed 26. Tsaasfer bed imbedded toilers 26r may also allow for the smooth transition of cargo between ramp 10b aad transfer bed 26. Transfer bed 26 may also bsetude screw-dowc twist or tasdera locks 26t, as shown in FIGURE X to interface with an ISO comer fittiog, for securing c^rgo 28 to the transfer bed 26.

- 13 -

In FIGURE 3, it can be seen that adjustable carriage 34 may have a rear wheel . of axle 34d. Although shown extended in FIGURES 2 and 3, adjustable carriage may also be retracted under transfer bed 26 when cargo 28 is being moved from grøusd 12 to transfer bed 26 (see FSQURE 10), Control panel 40 may provide controls for operating tilt fiame motor 244, traosler bed motor 26f, mά adjustable carriage 34. A remote wireless control (not stsøws) may also be used to operate the transferring system 20.

RAPID ATTACH OEVICE

FIGURES S-10 show a preferred mechanism, Rapid Attach™ container interface (RACI) SO, for quickly coπnectiag md disconnecting cargo 28 to the rear of transfer bed 26 so that cargo 28 may be moved, for example from ground 12 to transfer bed 26. Ia short, RACI 50 enables comer fittings 28b (FIGURE 6A) of shipping container 28a, or other cargo 28, to be quickly attached Io transfer bed 26. Coraer fittings 28b may be as specified by the American Natiosa. Standards insttϊute/ϊωternatioaaS Organization for Standardization (ANSI/ISO). Saeh fittings are available from suppliers such as Taademløc, Inc., of Haveiβck, North Carolinta, aύd me known to those having ordinary skill in the art.

RACI 50 m&y uiciude a bracket 72 (FIGURE 8) that provides an attachment point for the use of straps 76 to load container 2Sa onto transfer bed 26. Straps 70 may be made of nyioa (e.g., 3-ply Gt 4-ply) or another strong, yet flexible, πmterial. Due to its design and construction it has beea fomd &at EACI 50 may be attached and locked to the shipping container in less than ten seconds, and each mechanism of a pair may weigh only about 35-40 pounds.

- 14 -

FIGURE 5 stows RACI 50 in an open position. RACI 50 may include first plate 52, second plate 54, first fear 56, first sleeve 56a, second bar 58, second sleeve 58a, RACI wheel 60, first pin 62, second pin 64, kace 66 and fiitiag insert 70. Fitting insert 70 and second pki 64 are designed to confers* to the geserally oval apertures of comer fittiag 28b (see FIGURES 6A and 6B).

First plate 52 may include several apertures, including first aperture 52a, feraeket aperture 52b, an iψsmm m which first sleeve 56 may tee affixed, an aperUue te waiefc seeosd sleeve 58 may be affixed, aa ajserture ceoigeted for supporting SACI wheel 60, and a pin aperture 52c. Pm aperture 52c 1$ located on aa insert portion 52d of plate 52. Pk apertiire 52c is coafig^ed to accept second pin 64 wnen RACI 50 is closed.

First plate 52 may be constructed from & variety of materials, suck as but not limited to, high tensile steel such as ASTM A514B. First piate 52 may be macM&ed to i{»it«ie the features described herein. Flat pktes may be laser cat, while pins are cast or stock matsi-iais. First plate 52 may be constructed from materials, and constructed is a manner, to provide sufficient structure integrity to perform the operations described

Seeoad plate 54 may issiude carrying aperture 54a, art aperture k wfeiefe fif^ ^ 56 sa&y be afiβxe4 m apertara m wbkfo secøad bar 5S may be afiδxed, and an apeϊtoe in wfeicfe second ≠& U may fee aflSxed. Second plate 54 a&ay be coa«toκ^d from rø^lar materials, asd m a smtfar mmm, as desαdfeed ab©ve in fegard to first plafe 52,

First bar 56 may be attached to second piate 54 oa a first end, whiie the second end is configured to adjustably slide within and/or through first sleeve 56a and first plate 54, Bar 56 may be Saaiaed from stock raesd materials, such as but not limited to ASIM

A 108, C- 1045 cold-dravwi fear, milled to shape as shown and described herein, and provided with a chamfered maehiteed east Of course, for mass production purposes, tooJmg and steel casting of parts aaay be dose. First bar 56 may inserted through an aperture to secood plate 54, and wβMβd in place, for example.

Using similar prisciplss, seeoad bar 58 may be attached Io second plate 54 m a first end, while the second end is configared to adjustably slide within and/or through second sleeve 58a and Sm plate 54. Second bar SS may include a plurality of apertures configured to accept first pin 62. Second bar 58 may be constructed from similar materials, and in a similar maaaer, as described above in regard to first bar 56. Second bar 58 may also be attached Is second plate 54 in a manaer similar to that described above for first bar 56.

First fήa $2 may pass through second sleeve 58a and tibe plurality of apertism of second bar 58. Fust pin 62 may be configured to provide a secure fit is order to maximize the structural ktegrity of RACl 50 when RACI is subject to the stresses associated with the operation of RACI 50 as described below.

Brace 66, which may be cold drawn, may be configured to Ik flush against shipping container 2M during the operation of RACI 50, as described below, in order to provide lateral stability. Brace 66 may be attached to first plate 52 by weldiag, for example. Brace 66 may be used to keep KAO 50 from rotating vertically.

SACI vώββl 60 (FICHJSE 5) may be configured, and attached to first plate 52, in a manner that provides sufficient mechasical integrity to support RACI 50, and cargo 28, m the operation of EACI 50 as described below. RACI wheel 60, which may be steamed and hardened bar stock, should be made so that the bolt head is counter-sunk and flush

♦ 16 -

with the edge and recessed into the roller, so that it does not rub on the roller bed tracks 26c (FIGURE 4) or other portions of the transfer system 20.

Second pin 64 is configured Io allow m end portion to pass through a first apertus-e 28c (FIGURE 6A) on coHϊer fittmg 28b when R,A.C1 50 is ciose4. Insert portion 52d is designed to pass through a second aperture 28d (FIGURE 6B) oa comet fitting 28& when RACI 50 is closed. Wfaeu the EACI SO is dosed os a comer fitting 28b, second pm 64 mates with insert portion S2d of first plate 52 ia the iatemai hollow portico of Ae comer fitting 28b.

One preferred method of operating RACI 59 Is now described in reference to FIOUtES 5-10. in one step, the EAO Sd is placed sear comer fitting 28b of cαataiser 28a. RACX 50 is placed near comer fitting 28b in an open position, such as tits open position shown in FIOIMES 5, 6A and 6C. Insert portion 52d of first plate 52 is inserted ϊEito the second aperture TM of comer fitting 28b, with RACI wheel 60 oriented toward gfomd 12, and sesmd pin 64 in liae with first apertøe 28c of comer fitting 28b, as shown in FIGURES 6A ami 6C3,

Ia aao&er step, RACI 50 h closed by applying a force on second plate 54 towards cm 'go 28, as ϊdiowa by atϊO'srø 68 k FIGURES 6A at«i 6B. The force may be applied to second plate S4 through caxry ing aperture 54a and/or via the exterior $mf«κ« of second plate 54. The force applied to secoad plate 54 results ia firøt bar 56 and second bar 58 passing, respectively, ϋ»»ugb first sleeve 56a as4 second sleeve SSa, and results in second plate 54 moving towards farst plats 52. The force is applied until an end portion 64a of secoβd pin 64 enters first aperture 2Se of corner fitting 2Sb and mates in aperture

- 17-

Ia another step, RACI 50 is locked in place. RACI 50 may be locked by placing first pin 62 through seeoad sleeve SSa sad one of the plurality of apertures (rrøt showo) of second bar 58 m shøwa ia PKJIIRE 7A. FIGURES ?A and 7B s^ow RAO 50 to a closed ajsd locked position.

In another step, bracket 72 is attached to EACI 50 &r©»gk bracket aperture 52b as skews ia FiOUSUE 8. ϊa aϊrøther step, strap 70 is attached to fcraasfer feed trølley 26b (FIGURES 3 aiϊd 4) and braeket 72. ϊa another step, cargo container 28b is moved when transfer bed trolley 2/Sb pulls oa strap 70, resulting ia a force being applied to bracket 72,

M another step, cargo container is pulled oato the upper surface 26» of transfer bed 26. As shown in FIQUBES 6C and S, first plate 52 may include a sloped surface 52f to allow RACI SO to easily pass to upper surface 26n after passing over rollers 26a. As a pullrøg force is applied to strap 70, sloped surface 52f comes is contact with rollers 26a ©f transfer bed 26. Further pullύig oa sti^ss 70 resaits is SAO 50 traveling over roller 26a and ofito the upper surface 2δnoftransfef bed 26.

MESHING WHEEL DEVICE

FIGURJES 11-15 show a preferred mechanism, a meshing wheel 32 ami tilt frame trolley 24a, for pivotMly eormecting tramfer bed 26 to tilt frame 24, mά øiovsBg transfer bed 26 In relationship to tilt frame 24. TroHey 24a and meshing wheel 32 enable transfer bed 26 to be lowered fi«m tilt &ame 24 ia a flexible mamer that allows for the efficient loading of cargo 28 onto trasster bed 26 mά chassis ISa, whether cargo 28 is on the ground 12 or on loading ramp 10b.

- 18 -

Refenriag ϊKJW to FIGURES 11 &rosgh UB, iaesbing wheel 32 may include mounting plate 32a, mountmg apertures 32b, mounting risers 32c, arcing table 324 tsbk sajpjp©rts 32e, pin 321. pin not 32g, securing plates 32h, asd grease fittings 32m. Mcwjiting phάe 32a m& apertrøes 32b may be used to secure sneshmg wheel 32 t® tik &ame trolley 24a (FIOIiRE 12) using eoaveatioml fastening methods, suck as but not limited to nuts and bolts. Fw example, meslώϊg wheel 32 may be mounted on troMey 24a k a variety of ways sach as, but not limited to, placing four (4) bolts, for example grade eight (S) bolts, through mounting apertures 32b and trolley 24a, and securing the bolts

Mounting risers 32c and table supports 32β may be iaterlaced (shown k FIGURES 11 a.κi OA) and pivot^ly affixed with securing plates 32h, ia order to create a rooking axle shown by dashed line 80 (FIGURE 12), allowing m-llne movemsBt of arcing table 324 (as shown by arrow S2) m relation to tαoiaiting plate 32a. Pin 32f and pia nut 32g smy 1« used to secure sseshmg wheel 32 to transfer bed 26 (FIGURE BB). Thus, transfer bed 26 may be mounted on tilt feame trolley 24a by passing pin 32f

Arcing table 32d includes meshing surface 32k. Transfer bed mciudes meshing surface 26q (FIOUlB BA). Meshing surfaces 32k mά 26q allow the transfer bed 26 to move laterally, as shown by arrow 84 ia FIGURE 4, in conjunction with the inline movement peπnltted by rocking axle 80. Grease Fittings 32m allow grease to be placed

Referring to FIGURE 12, tilt frame trolley 24a may include side plates 24c. SMe plates 24c may be configured to follow UJt ftaate trolley tracks 24b (FIGURE 3). ItIt

- 19-

frame trolley 24a Is also connected to chain 24e (FIGURE 3) using a master link or any convenient method for affixing the chain 24e to the tilt frame trolley 24a iβ a manner that allows tilt frame trolley 24a Io be moved along tracks 24b using motor 244 (FIGURE 3 asd 4), Tfeus, & first end 264 of transfer bed 26 may be moved on trøeks 24b between the eads of tilt fiaiae 24 using mβtexs 24*1

The transfer system 20 m&y dm iachide a quick detach system for rapidly disengaging the transfer bed 26 from the vehicle chassis 18a, such as by using a quick-

The arraages&eiit described hereta allows transfer bed 26 to pivot in at least two manaers. The first manner Ia which trassfer bed M may pivot is inline with chassis ISa as arekg table 32d pivots in line with chassis ISa and mounting plate 32a as transfer bed 26 Is raised or lowered on the upper surface 24k of tilting frame 24, i.e., traasfer bed 26 may pivot upon the rocking axle shαwa by dashed Mae SO (FIGURE 12). The second

directions indicated by arrow 84 Ia FIOURE 4, /.«., traasfer bed 26 may pivot upon aa axis i

FIGURES 14 and 15 show the movement of tilt frame trøSϊey 24a on tilt frame 24. Is FIGURE 14, trolley 24a Is located sear a distal ead φβm the cab of vehicle IS) of tilt iaiae 24, In FIGURE 15, tmlksy is fo&άsά eksser to t» cab of veMeie 18, Trølley 24a moves from the position shown ia FIGURE 14 to, aad jfrorø, the position shows ia HGURE 15, λrβagb. &e ^vrøis^ of chais 24e about jSrst gear 24f (FIGURE 3) mά second gear 24g (FIGURE 4, 14 aad 15). As chain 24e moves, trolley 24a moves along tracks 24b.

- 20-

PINTLE DEVICE

FIGURES ϊ6A aad 168 show a preferred mechanism, a pintle device 90, for towύig a trailer. Piatle device 90 may be retractaHe as ^iown by airow 98. Pintle device W may fee retoctafeie, at least in part, to misimize iaierfetββee wfeile trassisr bed 26 is being lowered from tilt føame 24 and while transfer bed 26 is positioiϊed. for transferring cargo 28, such as showa in FIGURE ISA.

Pkitie device 90 may isclaie loop 92, piste M, and Maged support M. Hinged support % allows pintle device 90 to be folάed mto traasfer bed 26 such that hinged support % is flush wife the bottom sβrface of transfer bed 26, aad held in place with a removable pin. & may also be convenient to locate the pintle hook 90 so that it Is integrated iøto the rear stabilizers, sod so that it is both retractable aad telescopiug.

SYSTEM OPERATION

Referring now to FIGURES 17 A, ITB, aad 17C, one preferred method of practkmg the invention Is described in sequential views. FIOXIRE !?A shows cargo 21 oa transfer bed 26. M Figure 17 A, transfer bed 2& is horizontal as it might be after receiving cargo 28 from loading raaφ 10b (FIGURES 1 and 2} where transfer bed 26 is levd with loading ramp 10b. FfGUEE ITB shows transfer bed 26 with cargo 28 being moved from a position level with loadiag ramp 10b to a position on Hit frame 24 aad chassis ISa. FIGURE 17C shows cargo 28, transfer bed, mά tilt frame 24 on chassis 1 Sa.

In operaticm, vehicle 18 (FIOUEE I), equipped with transferring system 20, may approach the rear of aircraft 10. Loading ramp 10b may be lowered to access cargo 28 Ia cargo bay 10a (FIGURE 2). Vehicle 18 may stop at a distance from loading ramp 10b

-21 -

such that space is allowed for transfer bed 26 to extend between tilt frame 24 and loading

Cargo 28 may be moved onto traasfer bed 24 ia a masber of manners. IR the case whefe cargo 28 is a vehicle, the veMele may 1« drives oa to ttaas&r bed 26. M the case where cargo is β eøatatser 2Sa, contaiuer 2Sa may be pushed on imbedded rollers, iadudiag traasfer bed imbedded rollers 26r, from cargo bay 10a to the upper surface 26a of transfer bed 2& Containers 2Sa may also be moved using RAC! SO and transfer bed trolley 26b. Ia FIGURE 17 A, cargo 28 is shows secured using RACI 50 attached to trolley 26b. Cargo may also be secured using ISO comer fitting twist locks 26t (FIGURE 3). Motor 26g may used to pull cargo 28 through trolley 26b, strap 70, and RACϊ 50. Ia FIGURE I7A, tilt Same trolley 24a Is shown at the distal end of tilt frame 24, while cylinder 30 Is extended causing tilt frame 24 to pivot on chassis 18a.

FIGURE 1?B shows transfer bed 26 and cafgo 28 being pulled onto tilt &fane 24, As tilt &mm motor 24«S pulls tϋt frame trolley 24a toward the proximate end of tilt feame 24, meshiøg wheel 32 pivots, iϋ-lias and laterally as required by the ciretrøstaaces, in order to align transfer bed 26 wife tilt frame 24. As transfer bed 26 moves toward the prøάmate end of tilt frame 24, adjustable carriage 34 adjusts aad eventually retracts as slrøwa ia FflOURE IfC,

FIGURE 17C shows tilt frame 24 and transfer bed 26 lying horizontally on chassis 18a. AdjustaWe carriage 34 bm collapsed s«eh that rear v^eels 34a are raised in order to avoid interference with the movement of vehicle 18. Cylinder 30 lias also retracted as tilt frame 24 moved from the pivoted position shorn in FIGURE 17B to the horizontal position shown in FIGOKE 1 ?C.

-22 -

In oae preferred embodiment, the invention provides a device for transporting cargo 28 between an aircraft 10 and a land-based vehicle 18 having a vefaicte chassis 18a, The inveBtion may include a pivotiag tilt føsme 24 supported by vebicle chassis ISa atϊd traasferbed 26. Ttaasisr feed M is pivstsiiy eonseeted at a fits* end 26d, to tjas lift δaase 24 and has a second, or distal, end in engaged communication with loading tamp 19b of aircraft 10. ^' Fhk permits cargo 28 Ihrø akcrail 10 to be mxalved by the transfer bed 26, and also permits cargo 28 to be transported &om transfer bed 26 into the loading compartment of aircraft 10. $a the preferred embodiment shown, the transfer bed 26 has an upper surface 26a on which cargo 28 rests, aad the upper surface 26a of traasfer bed 26 is capable of selective height adjustment relative to the ground 12. Selective height adjustøent may be provided by adjustable carriage 34 _» as described above.

Referring now to FIGURES ItA, 1 SB, i SC and IgD, another preferred method of practicing the invention is described in sequential views. FiQURE ISA shows cargo 28 oa the ground 12 to the rear of the transfer system 20 with the EACI 50 attached to the cargo 2S. In Figure 1 SA, transfer bed 26 is angled as it might in asticipation of receiving cargo 28 located on the grorød 12. FIGURE I SB shows cargo 28 being moved onto the tramiεr bed 26. FIOUEE ISC shows the cargo 28 partiaHy on the transfer bed 26. FIGURE 18D shows the cargo 28 on the tomsfer bed 26.

It should by now be appreciated that various alternative mechanisms and/or modifications to the sbove-referenced designs maty be made while still keeping within the principles of the various inventions described here, examples of which will now be discussed. Durable, flip-away guide rollers (not shown) may be used to facilitate guiding the load onto the cargo bed. Lanyards (small metal cables) may be used oa pins Io retain

-23

the pins. Storage boxes may be added as needed. Because the loading device may be used sa exigent circuasstaoces, It may be deskabic to lift tame 24 and/or transfer bed 26 $o that they may be qaickiy jettiscmed if necessary, such as by employing quiek-detaeh pirn a«d/or qtiick-dJsconaect fcβses, Chains, such as chain 24e and chain. 26h _» may be provided with a sel&eleaawg wiper system (aot shown), A perforated deck may be employed to limit weight lighting may be iaeørpαraied kto the bed, using protective pockets for example. Oaβ or more sets of controls may be located not just ia the vehicle cab but also, for example, just behind the tilt pivot point, oa each mάs of the aβst (preferably tategrated into the bed and protected).

Hie above description is not intended to limit the meaning of the words used k the foilowkg claiias that define the invention. Other systems, methods,, features, and advantages of the present invention will be, at mil become, apparent to one having ordinary skill in the art upon examrøatkϊQ of Use foregoing drawings, written description aad claims, and persons of ordinary skill ia the art will usderstaad that a variety of other designs siiti fsUtβg wi&ia tibe seβpe of ώe &8ow^ claims may be mvisioaed and used. For example, HACI SO may be linked together by a brace, bar, rope or any other means, so that the linked pake m&y be secured to two comer fittings 28b. It Is contemplated that these ør other feture modificatioas m structure, function, or result will exist that are not substantial changes and that all sach insubstantial changes in what is claimed are i to be covered by the claims.

- 24 -