Title:
HAND TOOL APPARATUS FOR ORBITAL DRILLING
Document Type and Number:
WIPO Patent Application WO/2001/015870
Kind Code:
A2
Abstract:
A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The tool axis passes through a predetermined point on a surface of the object. The apparatus includes an actuating assembly including a housing. The housing contains an axial feed mechanism configured for moving the cutting tool in an axial direction, a spindle motor configured for rotating the cutting tool about the tool axis, and a radial offset mechanism. The radial offset mechanism is configured for moving the axial feed mechanism in a radial direction such that the tool axis is offset from a principal axis. A motor is configured for rotating said axial feed mechanism and the cutting tool about the principal axis.
Inventors:
Linderholm, Dag G. (Rönninge Skolväg 42 Rönninge, S-144 21, SE)
Application Number:
PCT/SE2000/001641
Publication Date:
March 08, 2001
Filing Date:
August 25, 2000
Assignee:
NOVATOR AB (Björnnäsvägen 21 Stockholm, S-113 47, SE)
International Classes:
B26F1/16; B23B35/00; B23B45/14; B23B49/02; B23C3/34; B23Q5/04; (IPC1-7): B25F/
Attorney, Agent or Firm:
Winblad P. (Albihns Patentbyrå Stockholm AB P.O. Box 5581 Stockholm, S-114 85, SE)
Claims:
WHAT IS CLAIMED IS:
| 1. |
A hand tool apparatus for using a cutting tool with a first width and a tool axis to machine a hole in an object, the hole having a second width at least as large as the first width of the cutting tool, whereby the tool axis passes through a predetermined point on a surface of the object, said apparatus comprising: a pneumatic actuating assembly including a housing, said housing containing: an axial feed mechanism configured for moving the cutting tool in an axial direction; a spindle motor configured for rotating the cutting tool about the tool axis; at least one cavity configured for receiving a compressed gas for powering at least one of said axial feed mechanism and said spindle motor; and a radial offset mechanism configured for moving said axial feed mechanism in a radial direction such that the tool axis is offset from a principal axis; and a motor configured for rotating said axial feed mechanism and the cutting tool about the principal axis. |
| 2. |
The hand tool apparatus of claim 1, wherein said spindle motor and said radial offset mechanism are formed integrally with said axial feed mechanism. |
| 3. |
The hand tool apparatus of claim 1, wherein said spindle motor comprises a pneumatic spindle motor. |
| 4. |
The hand tool apparatus of claim 1, wherein said axial feed mechanism comprises a pneumatic axial feed mechanism. |
| 5. |
The hand tool apparatus of claim 4, wherein said spindle motor is attached to a shaft for rotating the cutting tool, said at least one cavity comprising at least one circumferential cavity substantially surrounding at least one of said spindle motor and said shaft. |
| 6. |
The hand tool apparatus of claim 5, wherein said axial feed mechanism includes a cylinder having two opposing chambers separated by a piston, one of said two chambers being in fluid communication with said at least one circumferential cavity. |
| 7. |
The hand tool apparatus of claim 5, wherein said radial offset mechanism includes : an inner sleeve substantially surrounding and having a fixed radial position relative to said shaft; and an outer sleeve substantially surrounding and disposed concentrically relative to said inner sleeve, said inner sleeve and said outer sleeve being rotatable relative to each other. |
| 8. |
A hand tool assembly for machining a hole in an object having a working surface, said hand tool assembly comprising: a template assembly including: a template having a front surface configured for contacting the working surface of the object, said template having a throughhole extending through said front surface; and an annular sleeve having an interior substantially aligned with said throughhole; and a tool assembly configured for being inserted into said sleeve to thereby machine the hole, said tool assembly including: a tool holder having a generally conical shape tapering from a rear end towards a front end, said rear end having a rear opening, said front end having a front opening, said front opening being smaller than said rear opening, said front opening and said rear opening being connected by a central passageway; and a cutting tooling configured for being inserted into said rear opening and being pushed through said passageway and partially through said front opening. |
| 9. |
The hand tool assembly of claim 8, wherein said tool assembly further comprises a locking device configured for locking said cutting tool in said tool holder. |
| 10. |
The hand tool assembly of claim 8, further comprising a housing fixedly attached to said tool holder, said housing being configured for being detachably connected to said sleeve. |
| 11. |
The hand tool assembly of claim 10, wherein an inside circumference of said housing is coupled with an outer circumference of said sleeve. |
| 12. |
The hand tool assembly of claim 11, wherein said housing is detachably connected to said sleeve via a bayonet socket. |
| 13. |
The hand tool assembly of claim 8, wherein said sleeve is tightly received within said throughhole of said template. |
| 14. |
The hand tool assembly of claim 8, wherein template has a back surface, said sleeve including at least one radially extending flange having a front surface engaged with said back surface of said template. |
| 15. |
The hand tool assembly of claim 14, further comprising at least one bolted joint attaching said at least one flange to said template. |
| 16. |
An axial feed control system for a handheld drill, said system comprising: a cutting tool extending in an axial direction; an axial positioning mechanism, including: a rear housing connected to said cutting tool; a front housing at least partially surrounding said cutting tool; and a ring attached to one of said rear housing and said front housing, said ring being threadedly coupled to an other of said rear housing and said front housing such that rotation of said ring moves said cutting tool in said axial direction relative to said front housing; and a stroke length adjustment mechanism, including: a return mechanism configured for reversing a direction of axial movement of said cutting tool from a forward direction to a backward direction; a latch connected to said return mechanism, said latch being movable between a first position in which said return mechanism is not activated, and a second position in which said return mechanism is activated; and a projection having a position which varies with an axial position of said cutting tool, said projection being configured for engaging said latch to thereby move said latch from said first position to said second position. |
| 17. |
The axial feed control system of claim 16, wherein said projection is disposed on an elongate element extending substantially in said axial direction. |
| 18. |
The axial feed control system of claim 17, wherein said stroke length adjustment mechanism includes a lock screw configured for fixedly attaching said elongate element to said rear housing of the drill at a selected one of a plurality of axial positions relative to said rear housing. |
Description:
INTERNATIONAL SEARCH REPORT International application No. PCT/SE 00/01641 C (Continuation). DOCUMENTS CONSIDERED TO BE RELEVANT Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No. A WO 9411142 A1 (AB STRUKTURTEKNOLOGIER I STOCKHOLM), 1-7 26 May 1994 (26.05.94), figure 1, abstract INTERNATIONAL SEARCH REPORT International application No. PCT/SE00/01641 Box I Observations where certain claims were found unsearchable (Continuation of item I of first sheet) This international search report has not been established in respect of certain claims under Article 17 (2) (a) for the following reasons: 1 2 Claims Nos.: because they relate to subject matter not required to be searched by this Authority, namely : 2. g Claims Nos.: because they relate to parts of the international application that do not comply with the prescribed requirements to such an extent that no meaningful international search can be carried out, specifically : 3. g Claims Nos.: because they are dependent claims and are not drafted in accordance with the second and third sentences of Rule 6.4 (a). Box II Observations where unity of invention is lacking (Continuation of item 2 of first sheet) This International Searching Authority found multiple inventions in this international application, as follows: See extra sheet. 1. As all required additional search fees were timely paid by the applicant, this international search report covers all searchable claims. 2. ! j As all searchable claims could be searched without effort justifying an additional fee, this Authority did not invite payment of any additional fee. 3. ! As only some of the required additional search fees were timely paid by the applicant, this international search report covers only those claims for which fees were paid, specifically claims Nos.: 4. (g No required additional search fees were timely paid by the applicant. Consequently, this international search report is restricted to the invention first mentioned in the claims; it is covered by claims Nos.: 1-7 Remark on Protest 1 The additional search fees were accompanied by the applicant's protest. No protest accompanied the payment of additional search fees. INTERNATIONAL SEARCH REPORT Intemational application No. PCT/SE00/01641 The separate inventions are: 1. Claims 1-7 are directed to a hand tool apparatus for using a cutting tool to machine a hole in an object. 2. Claims 8-15 are directed to a hand tool assembly for machining hole having a working surface. 3. Claims 16-18 are directed to axial feed control system for a hand held drill. The above groups of inventions do not satisfy the requirements of unity of invention. The groups of inventions are not so linked as to form a single general inventive concept (PCT Rule 13.1 and 13.2). The"special technical features"in group one relate to a pneumatic actuating assembly including an axial feed mechanism, a spindle motor for rotating the cutting tool and a radial offset mechanism. The"special technical features"in group two relate to a hand tool assembly comprising a template assembly including a template with a front surface a throughhole, an annular sleeve with an interior substantially aligned with the throughhole and tool assembly configured for being inserted into the sleeve. The"special technical features"in group three relates to an axial feed control system comprising a cutting tool extending in an axial direction, an axial positioning mechanism and a stroke length adjustment mechanism. There is no technical relationship among these inventions involving one or more of the same or corresponding technical features. INTERNATIONAL SEARCH REPORT International application No. Information on patent family 05/02/01 PCT/SE 00/01641 05/02/01 PCT/SE 00/01641 Patent document Publication Patent family Publication cited in search report date member (s) date WO 9417944 A1 18/08/94 JP 6226698 A 16/08/94 SE 9300400 A 06/08/94 US 5971678 A 26/10/99 AU 4810199 A 20/12/99 WO 9962661 A 09/12/99 US 4557338 A 10/12/85 CA 1204004 A 06/05/86 DE 3246548 A, C 05/07/84 DK 159302 B, C 01/10/90 DK 564083 A 17/06/84 IT 1160143 B 04/03/87 IT 8354048 V 16/12/83 IT 8368311 D 00/00/00 JP 1495200 C 16/05/89 JP 59187474 A 24/10/84 JP 63043549 B 31/08/88 WO 9411142 A1 26/05/94 DE 69323092 D, T 19/08/99 EP 0674562 A, B 04/10/95 ES 2129618 T 16/06/99 JP 8506766 T 23/07/96 SE 500933 C 03/10/94 SE 9203493 A 20/05/94 US 5641252 A 24/06/97
