CROSS-REFERENCE TO RELATED APPLICATION

fOOO i ] This application claims the teieftt uiufer 35 U.S,C. § 1 1 (e) of the earlier filin date of United Sates Provisional Patent Application No. 62/575,010 filed on October 20, 2017, the disclosure of which is incorporated by reference herein.

BACKGROUND

[0002] Sprayers are commonly employed to apply diluted solutions containing chemicals suc as pesticides, fungicides, herbicides, and fertilizers to lawns or garden foliage. Typically, sprayers are attached to a garden hose.

|0OO3) In the case of th li uid chemical aspiration sprayer, the pressure of the water delivered by the hose through the spraye creates a negative pressure gradient or venturi that causes the chemical solution to be aspirated into the water stream, thereby providing a diluted solution: to be sprayed,

[0004] In eneral, the liquid chemical aspiration sprayers include a container for holding the chemical solution to be diluted and sprayed and a sprayer/mixing head. The base portion of the sprayer head serves as a cover for the chemical container. Such sprayer heads generally include an adapter for connecting the sprayer head to a standard garden hose, and a hand valve for turning on and off the flow o water from the garden hose. Th sprayer head also includes an aperture over which water from the garden hose passes to mix with undiluted chemical solution from the container. Such sprayer heads may also include a venturi chamber in which the water from the garden hose mixes- with the chemical from the container.

0003 ] In principle, as water passes over the aperture or through the venturi chamber, a siphoning or vacuum action is created by virtue of the velocity of the water passin over the a erture or through the chamber, to draw chemical from the container into the water stream for dilution.

[OiXXi] Prior hose end sprayers, such as disclosed in U.S. Patent Nos, 6749133 and 0445872 which are incorporated herein by this reference, included a resilient inner insert tube, used to flow the water and proportion n the liquid product desired to be diluted by the water. Such a resilient inner insert tube can be somewhat difficult to move within the rigid polypropylene housing, The resilient materials used to ibrw the inner tube, or flow tube _* typically function well whe first assembled but become more difficult to move over time. The problem seemed to become worse the longer the product would stay dormant after initial assembly, A need far a spraying apparatus that provides superior aspiration and easier to operate functional tty has thus developed,

BRIEF DESCRIPTION OF THE M WINGS

[0007] FIG. 1 shov.'s the two-piece flow tube assembly as assembled.

[00081 FIG, 2 shows a top view of the two»pieee flow tube assembly

£000 ] FIG 2A shows a cross-sectional view taken f om FIG. 2

[0010] FIG. shows an exploded two-piece flow tube assembly.

[001 1] FIG. 4 shows the main housing sub-assembly.

[0012] FIG, 5 shows the mai housing sub-assembly with the two-piece flow tube assembly prior to being inserted into the main housing sub-assembly and the actuator prior to being snapped onto the main housing sub-assembly.

{$0..¾ FIG. 6 shows a side view of the main housing sub-assembly .

[0014] FIG, 6A shows a cross-sectional view taken from FIG. 6.

[0015] FIGS. 7A, 7B, 7C show views of an exploded sprayer and nozzle.

[0016] FIG. 7P shows an assembled sprayer and nozzle.

[0017 ] FiG. 8 shows a side view of the assembled sprayer in an OFF position. [0018} FIG. 8 A shows a cross-seeiiortai view of the assembled sprayer of FIG . 7.

[001 ] FIG. 8S shows a detailed view of area 8B of FIO, 8A.

[0020] FIG, 9 ho s a side view of the assembled, sprayer in an H20 (water) Only position.

[0021 J FIG, 9A shows a eross-sectiona! view of the assembled sprayer of FIG. 9.

[0022] FIG. 9B shows a detailed view of area 98 of FIG. 9A,

[0023] FIG. 1 shows a side view o f the assembled sprayer in the ON/MIX positios,

[0024] FIG I0A shows a cross-sectional view of the assembled sprayer of FIG. 10

[0025] FIG. iOB shows a detailed view of area I OB of FiO, 10A.

[0026] FfG:, I ! shows a side view of the assembled spraye in the OFF position with the nozzle rotated to the straight stream position.

[0027] FIG, 1 1 shows a eross-sectiot ai view of the assembled sprayer of FIG. ! I ,

[0028] FIG. 1 IB shows a detailed view of area I IB of FIG. 1 lA.

[0029] FIG, 12 shows a side view of the assembled sprayer in the H20 (water) Only position with th no¾¾le rotated to the straight stream position:.

[0030] FIG. 12A shows a cross-sectional view of the assembled sprayer of FIG, 12.

[003 1] FfG. 12B shows a detailed view of area 12B of FIG, 12A.

[0032] FIG, 13 shows a side view of the assembled sprayer In the ON/MIX position with the nozzle rotated to the straight stream position.

[0033] FIG, OA shows a cross-sectional view of the assembled sprayer of FIG. 13.

[0034] FIG. 131! shows a detailed view of area 13B of FIG. OA.

[0035] FIG. 14 is a side view of the main housing sab-assembl shown m the OFF position.

[0036] FIG, 14A is a cross-sectional view taken from FIG. 1 . [0037] FIG, IS is a side view of the main housing sub-assembly s own s tiie 1120 (water) Only position.

[O03S1 FIG. ISA is a cross-sectional view taken from FIG. 15»

00391 £10. 16 is a side view of the main housing sub-assembly shown in the ON/MI position.

[0040] FIG, 16A is a eross-seetkma! view taken from FIG. 16.

[00 1] FIG. 17 is detailed perspective sectioned view showing t¾e relationship of the flow tube to the nozzle when the sprayer i in the OFF position.

[0042] FIG, 18 is a detailed perspective sectioned view showing the relationship of the flow tube to the nozzle when the sprayer i in the H20 (water) ONLY position.

[004¾ FIG. 59 is a detailed perspective sectioned view sho ing the relationship of the flow tube to the nozzle when the sprayer is in the ON/MIX position.

[0044] FIG. 20 is a detailed perspective sectioned; view showing the relationshi of the flow tube to the nozzle when the sprayer is m the OFF position and the nozzle is rotated to the straight stream position.

[0045] FIG. 21 is a detailed perspective sectioned view showing the relationship of the Sow tube to the nozzle when the sprayer is in the 1120 (water) ONLY position and the nozzle is rotated to the straight stream position.

[0046] FIG, 22 is a detailed perspective sectioned view showing the relationship of the flow tube to the nozzle when the sprayer is in the ON/MIX position and the nozzle is rotated to the straight stream position.

DETAILED DESCRIPTION

[0047] Embodiment of the invention are discussed below with reference to the Figures. However^ those skilled in the art will readily appreciate that the detailed description given herek Witts respect to these figures is for explanatory pur oses as the invention extends beyond these limited embodiments.

0048 features which are described in the context of separate embo iments may also be provided in combination in a single embodiment. Conversely, various features which are, for brevity, descr ibed in the contest of a single embodiment, may also be provided separately or m any suitable subcombination.

[0049! it is to be understood t at any exact measurements/dimensions or particular construction materials indicated herein are solely provided as examples of suitable con figurati ns and are not intended to be limiting in any way, Depending on the needs of the particular application, those skilled in. the art will readily recognize, in light of the following teachings, a multi licit of suitable alternative implementation details.

{0O501| This application: discloses an invention which is related, generally and in various embodiments, to a sprayer. Disclosed herein is a sprayer having a flow tube assembly for which provides superior aspiration and easier to perate functionality than prior sprayers. In addi ion, n exterior shroud is disclosed giving the spraying apparatus an entirely new appearance. As part of this exterior "skin" a flo altering nozzle is disclosed. This nozzle is configurable for either a straight (long reach) stream delivery or for a wide &a (short wide area coverage) allowing the end user great flexibility in the use of the sprayer.

[0051] Referring to FIGS. 1-22, there is shown a sprayer 16 having a flow tube assembly I, a main housing sub-assembly 10, arid an external shroud 26.

[0052] Referring t FIGS. 1 -3, flow tube assembly 1 is a two piece assembly having an upstream flow tube assembly member 2, and a downstream flow tube assembly member 3. Plow tube assembly 1 is moveable within main housing sub-assembly 10 from an upstream OFF position (FIGS. S, 1 , and 14) to an intermediate H ₂ 0 (water) ONLY position (FIGS. 9, 1 ·* and 15) to a downstream ON/MIX position (FIGS. 10, 13, and 16). Upstream flow tube assembly member 2 includes a tapered male seal end 4 which is adapted to be insertable into female seal end 27 of downstream flow tube assembl member 3. Downstream flow tube assembly member 3 has a tip IS having a tapered end 28 and radially spaced locating ribs 29, 30. Locating ribs 29, 30 cooperate with nozzle 14 when flow tube assembiy 1 is in the OM/ 1X position so the nozzle 14 will not rotate while in operation. When flow tube assembly 1 is in the OFF position, locating ribs 29. 30 disengage with nozzle 14 so nozzle 14 is allowed to rotate allowing the user to select between a wide dispersed spray pattern: or a long reaching straight stream deli very of the diluted and mixed liquid- Flo tube assembly 1 further includes a number of seat members in the form of standard elastomeric O-rings to provide the sealed operation formerly provided by the resilient flow tube molding itself, Speciflcaliy, upstream flow tube assembly member 2 has two O-rings 5, 6, used io isolate and ^■ control the flow of the carrier stream entering the sprayer from the source and downstream flow tube assembiy member 3 has three O-rings 7, 8, 9. The two downstream-most O-rings § and 9 isolate and control the atmospheric vent for the container, The - ings 5, 6, 7, 8, 9 are positioned to provide the proper squeeze required at each seal without creating too much drag force during user operation of the device. Flo tube assembl 1 further has a series of chambers defined within flo tube assembly 1. A first, mildly tapered cylindrical chamber 46 preferably extends f om inlet flo bore 48 in upstream: flow tube assembly member 2 to a throttle exit 24 having a smaller diameter than the upstream end 48. A short cylindrical venturi chamber 50 is formed by the terminal end of flow tube assembly member 2 and the inner geometry of flow tube assembly member 3, This venturi chamber SO has a much larger crosS'Sectional are than the throttle exit 24 which acts to slow the carrier stream velocity and in turn decrease the system pressure within that chamber. This velocity decrease and corresponding pressure decrease (as defined b Bernouli's law) results in a less than atmospheric pressure condition within venturi chamber 30 (eo monly understood as a vacuum), flow tube assembly member 3 receives the carrier stream flow through venturi chamber 50 along with the injected concentrated liquid product flow through apertures 56 situated on flo tube assembly member 3, This combined mixed fluid then is driven through a imstoconical transition chamber 52, then, through a mildly tapered outlet chamber 54 of decreasing diameter extending to an outlet flow bore 32 at ti 1 8. This chamber 54 has a specific and distinct diameter range which allows free fluid flow through the device without undue back pressure, while at the same time is not so large as to allow atmospheric air to enter backwards from the exit port of the device, Downstream flow tube assembly member 3 further has said apertures 5$ disposed between 0-rings 7 and said apertures leading to the interior of short formed cylindrical chamber 50.

[0053] f low tube assembly I is molded, cast or otherwise constructed from a suitable materia! such as a rigid polypropylene.

[0054] Since the two-piece flow tube assembly i is moved within main housing subassembly 10 to operate the sprayer 16 _: , the assembly of the two pieces must be secured to prevent them from disassembly during use. This is accomplished by a latch assembly 3 ! that when inserted into a bore 25 of the main housing sub-assembly 10 is pre vented from unlatching^ thereby securing flow tube assembly members 2, 3 one to the other so they function operationally as a single unit, The tapered male sea! end 4a and tapered female receiver bore 4b between flow tube assembly members 2, 3 provides an air-tight seal that acts as a acuu : seal, when in operation. The pressure drop at the venturi chamber 50. which produces the lower than atmospheric pressur condition, may cause the tw flow tube assembly members 2, 3 to actually pull together, or tighten, the tapered male seal end 4a and tapered female bore 4 fa surfaces, further enhancing the seal integrity during use. A latch assembly 31 latches the flow tube assembly members 2, 3 together. In the illustrated embodiment, latch assem ly 3 1 includes a pair of oval boss projections 22 on upstream flaw tube assembly member. Oval boss projections 22 are disposed upstream of tapered male seal end 4a. l .ateh assembly 31 further includes a pair of oval slots 23 on downstream flow tube assembly member 3, Latch assembly 31 allows the installat ion of the O-rings 5, 6, 7, 8, prior to insenion of ^" the flow tube assembl I into the sprayer main housing bore 25. Once inserted into the main housing bore 25 of main housing sub-assembly 10, the latch assembly 3 1 is trap ed between the moving flow tube assembly 1 and the inner diameter of the main ho sin bore 25, preventing the latch assembly 31 from becoming dislodged during use of the sprayer 16. This molded in integral latch assembly 31 with the support and entrapment by ifee main housing b re 25 is Inexpensive o produce, easy to assemble, and performs exceptionally welt. Use nature of the two piece design allows the venturi chamber 50 to be precisely formed, allow the throttle exit 24 to be precisely controlled during nianuiaeturing, and allows the outlet flow bore 32 at tip I S to be arranged t provide the necessary flow length to establish the optimum flow characteristics required for long-reach straight stream spray applications. Hydraulic testing of this flow tube assembl 1 ha pro ven the design inten t and the venturi system of this desi gn is producing pressure drops of a larger magnitude than prior sprayers,

£0035 J Referring to FIGS. 4-6, main housing subassembl 10 includes an actuator 1 1 , the main housing bore 25, a threaded hose end snap attachment 33 and a threaded container snap attachment 34. Main housing sub-assembly 10 further includes a water inlet port 17 (FIGS, IDA and 13 A) disposed at the threaded hose attachment 33. Main housing sub-assembly 10 further includes a chemical inlet port 58 which selectively allows f!uidie communication with a drernieai container (not shown) to which the sprayer 16 is attached to allow chemicals or other substances from the chemical container into the stream of water or other substances fr m a hose (not shown) connected to threaded hose attachment 33 for dilution. This chemical container is placed in fluid communication with apertures 56 in

- g - downstream flow tube assembly member 3 when assembled to sprayer 16, M in housing sub-assembly 10 further includes atmospheric vent holes 60 which are in fluid communication with the inside of the chemieai container and can be selectivel placed in fluid communication with ou si e atmosphere through the main housing bore 25 through vent ports 20 in housing sub-assembly 10. Main housing sub-assembly 10 further includes a pair of grooves 35,, one on either side of main housing sub-assembly 10. Actuator ! I includes a thumb actuato portion 36 attached to a semt-cyiindrieal portion 37. Semi-cylindrical portion 37 includes opposed projections 38 on the bottom portion thereof which cooperate with grooves 35 to allow semi-cylindrical portion 37 to move linearly along the bore axis of main housing sub-assembly 1.0. The inner diameter of main housing bore 25 is only slightly larger than the outer diameter of the two-piece flow tube assembly I. In one embodiment, this clearance can be about 0.003 inches per side which will not allow the latch assembly 31 on the two-piece flow tube assembly Ϊ which cm have a thickness of about 0,027 inches t unlatch. Semi-eyiindncal portion 37 further includes prongs 42 (PIG. 7) which are adapted to mate folly with the prong receiver recesses 44 on flow tube assembly 1 , In operation, movement of thu b actuator portion 36 by a use will cause the entire flow tube assembly to move as one unit with the thumb actuator, allowing the user direct fluid flow control and operation through the thumb actuator motion,

[0056] Referring to FIGS. 7 A, 78, 7 , the external shroud 26 is a three-piece assembly comprising two side covers 1 a, 1 b and a n zzle 14. N zzle 14 includes a cam ramp 19 disposed on the upstream: end of a convex tapered flow deflecting surface 39 on an interior portion thereof (FIGS. 88, 9B. ! OB. 1 I B, 128, and 1 B). The two side cover parts i a, I3b include sna elements 0 to snap on to the main housing sub-assembly 10 and a circular snap bead element 1 provided onto which nozzle 14 is snapped, such that no fasteners or secondary operations required. Once snapped into position over the two side covers 13 a, l ib, sozzl-e 14 helps to hold the two side covers 13 a, 13b m position on the ma n housing sub-assembly 10. In addition, the snap feature geometry between the side covets 13a, \ 3b and the zzle 14 allows the nozzle 14 to rotate relative to the sprayer 1.6. The nozzle 1 can be rotated to tw different positions, 180 degrees apart. One position allows the stream to exit the flow tub assembly 1 untouched through a straight stream nozzle opening 4 ί as a straight stream tor extreme spray reach. The other nozzle position places a dispersed spray nozzle opening 66 ^' having a convex tapered flow deflecting surface 3 directly in the path of the flow from the exit bore 32 of flow tube assembly I causing the flow to be interrupted, resulting in a wide dispersed spray pattern, sometimes referred to as a fan spray pattern,

[0057] When placing the convex tapered flow deflecting surface 3 into the flow stream, the positional accuracy required to create the optimum spray dispersion without causing undue sid spray or misting can be a concern. With the number of parts in the assembly and with the tolerances required to ma ifaeture each of these parts, once assembled there is a wide range of relative positions which could result between the flow stream exit and thi flow Interrupting surface. Hence, there was a need to devise an apparatus to increase the precision of the positional placement of the flow stream relative to the deflecting surface on the nozzle part. The solution was to incorporate a tapered cam ram If into the convex tapered flow deflecting surface 3 which engages with the tapered end 28 of the tip 18 of flow tube assembly 1 such th¾t the flow tube assembly ί engages and is slightly lifted during movement from the n flow condition (FIGS. 8B and 1 18) to the flow and dispense position (FIGS. 10B and 1 B), This cam ramp 19 produces at least two effects, it raises the flow tube assembly 1 slightly and it forces the nozzle 1 downward slightly. The flow tube sealing arrangement, utilizing O-rings 5, 6, 7, 8, and 9 which ail sea! between the two-piece flow tube assembly 1 and the main housing bore 25 of the main housing sub-assembly 10 combined with the diametric clearance between the outer d iameter of the two-piece fl o w tube assembly 1 and the main housing bore 25 are adapted to allow the motion of the flow tube as it is raised during interference with the c m ramp 19 on the nozzle 14, Hence, the use of the 0-rings allows the motion of the two-piece fluid tube assembly 1 perpendicular to the axis of the two-piece flow tube assembly while still providing the sealed conditions required for operational erfo mance of the fluidtc system. In addition, the flexible or resilient nature of the polymers used to manufacture the downstream flow tube assembly member 3 will allow slight flexure or bonding of the member under the lifting force of the cam ramp 19 in conditions whereby the clearance between the outer diameter of the two-p iece flow tube assembly 5 and the main housing bore 25 i not sufficient to accommodate the total system tolerances. The net result is that the position of the flow exi t from the exit bore 32 of flow tube assembly 1 is at the same relative distance fr m the convex tapered flow deflecting surface 39 on the n zzle 1 regardless of the assembly tolerances within the given assembly, This arrangement provide a substantially uniform mist and drip free fan spray from each assembly. Since each part of this assembly comes from at least four cavities, there are a multitude of possible cavity combinations in production. This cam action feature, which is used to remove the toieraiice stack-up in the assembly, has removed a majo potential quality issue,

[0058] Given the ability to rotate the nozzle 14 to select the desired flow condition, there may be a concern mat the end-user may be in some danger of harm or getting really wet if they turned or rotated the nozzle 14 while the sprayer 16 is flowing water. To hel prevent this potential hazard, features were developed and implemented in the present design that eiTectively lock the rotation of the nozzle 14 while the sprayer 16 is flowing water, interlock ribs 62 on the nozxle 14 adjacent to convex tapered flow deflecting surface 39 are spaced a predetermined distance one from the other such that the ga between the is adapted to receive rib 30 015 flow tube assembly 1 wh the flow tube Is moved from tie OFF position to the ON/MIX position (see FIGS, 17-19). interlock ribs 64 on the nozzle 14 adjacent to straight stream nozzle opening 1 are spaced: a predetermined distance one ftom the other such that the gap between them i adapted to receive locating rib 3 on flow tube assembly 1 when the flow tube is moved from the OFF posi io to the ON MIX position {see FIGS, 20- 22).

>0059j The ability to tailor the shroud- side covers 13a. 13b to different styles and design for different customers, still using the inner skeleton for the flow performance, will allow one platform t be utilized for many potential customers or end- use applications. The posiiionab!e nozzle 14, allowing either a straight stream nozzle opening 41, or a distributed wide fen sty le of spray from ¾ dispersed spray nozzle opening having a convex tapered flow deflecting surface 39, and which is locked in positon during use, lends flexibility to the array of potential end use application as well .

[0060] Referring to FIGS. 8, 1 1, 14, 17, and 20, sprayer 16 is shown with flow tube assembly 1 in the OFF position as it is moved to th left most (upstream) position in this view. As shown in FIG. 8, flow tube assembly I blocks the flow of water from water inlet port 1? arid the flow of chemicals from e hem teal port 58. As shown in FIG. 8 A and 813, tip 18 of flow tube assembly 1 is not in contact with cam ramp 1 of nozzle 14.

[0061 ] In FIGS. 14 and 1 A, sprayer 6 is shown with flow tube assembly 1 m the OFF position and with the external shroud 26 removed, and with the chemical container attachment swivel and hose attachment swivel removed, FIG, 14A shows the vent 0-ring 9 on the flow tub assembly 1 to the left (in this view) of vent ports 20 in the main housing subassembly 10 thereby preventing fluid communication between the vent hole 60 and vent ports 20 rendering the container blocked from fluid communication with the atmosphere outside the container. The vent ports 20 (FIGS. 5, 6, and 14-16A) are a pair of circular holes, one on each side of main bousing sub-assembl 10:, near the fluid exit from the sprayer 16. Vent ports 20 control the access to atmosphere through the sprayer 1 6 and for the chemical container (not shown) to supply atmospheric pressure to motivate the fluid contents of the container when the sprayer 16 Is in the ON/MIX position and the ventnrt chamber 50 is at a less than atmospheric pressure condition. The vent ports 20 extend between the main bore 25 and the exterior of main housing sub-assembly 10 (atmosphere). In the OFF position, the vent Oring 9 is preventing fluid communication between the inside of the chemical container through atmospheric vent hole 60, vent ports 20 and the atmosphere. I the ON MIX position, O-' ing 9 has passed over vent ports 20 and now allows fluid communication through the annual space between the exterior diameter of flo tubs portion 3 and the inner bore 25 of main housing sub-assembly 10 and through vent port 60 into the chemical container (not shown),

[0062] Referring to FIGS. 10, 13, 16, 19, and 22, sprayer 16 is shown with flow tube assembly 1 in the ON/MIX positio as it is moved to the right most (downstream) position. As shown in FIG. 10 A and 101?, the water inlet port 17 is now open allowing water t flo through sprayer 16, and chemical inlet port 58 is in fluid connection with apertures 56 in downstream flow tub assembly member 3, As shown in iG< 10B, tip 1 8 of flow tube assembly 1 is contacting earn ramp 1 of noxzle 1 . The flow tube assembly 1 may actually move upward as a result of contacting earn ramp 1 , FIG. 10 shows the interference of the two parts. As the flow tube assembly 1 is moved downstream, it rides up the cam: ramp 19 and is lifted vertically by the magnitude of the interference shown by around 0.010 inches in one embodiment. The nozzle 1 may be pushed downward some small magnitude simultaneously during the cam action, however the net result of the slight liftin of the flow tube assembly I and: the slight lowering of the nozzle 14 is to set the relative distance between the How exit position from exit bore 32 and the convex tapered flow deflecting surface 39 on the nomle 14 to which the flow impinges. This combined: taction from the caia action sets the exiting water flow to a particular position relative to the convex tapered flow deflecting surface 39 on the nozzle 14 which it imparts, thereb removing the assembly to assembly variances due to the tolerances inherent in the many parts molded from the many cavities which make-up the final assemblies,

[0063] In FIGS. 1 and 1 A. sprayer 16 is shown with flow tube assembly the flow tube assembly I in the ON/MIX position and with the externa! shroud 26 and hose and container threaded connections: removed, FIG. 16A shows the vent Oring 9 on the flow tube assembly 1 to the right (in this view) of the vent port 20 in the main housing 10 thereby allowing fluid communication between the inside of the container (not shown) to which the sprayer 16 is attached and the atmosphere.

[00 3 In order for the sprayer 16 to work properly two conditions must be met, first the veuturi chamber 30 must produce a. pressure drop when the water is flowing through the flu kite chambers of flow tube assembly ! ; and second, atmospheric pressure must be allowed to act on the top of the fluid within the container to be mixed and diluted with the flowing water. However, the concentrated chemical fluid contents within the container to which the sprayer assembly is attached must be prevented from substantially leaking after filing and at any t im when not i n. use. Hence, the fluid communicati on between the insid of the container and atmosphere msst be gated or controlled ~ opened when water is flowing and closed at all other times. The two-piece flow tube assembly 1 when combined with the vent pons 20 within the main housing bore 25 of main housing sub-assembly 10 accomplishes this task.

[0065] in the %0 position (FIGS. % 12, 15, IS and 21), flow tube assembl ί is disposed between the OFF position and the ON/MIX positions such that the water inlet port 17 b open allo ing water to flow through sprayer 16, and the c em c l inlet port 58 is blocked.

[0066] Although the p aratus, assembly and us has been described arid depicted in detail for the purpose of illustration, it is to be understood lhat such detail is solely for that purpose and that nu ous modifications, alterations and changes can be made thereis by those skilled m the art without departing from the spirit and scope of the inventions disclosed herein.

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