IMPROVED CHUCK KEY AND HOLDER

• US 3,728,038 A
• Filed: 02/12/1971
• Issued: 04/17/1973
• Est. Priority Date: 02/12/1971
• Status: Expired due to Term

• Current Assignee: Arthur A. Gage
• Original Assignee: Arthur A. Gage
• Inventors: Gage, Arthur A.
• Primary Examiner(s): Weidenfeld, Gil
• Application Number:
  US05/114,820
• Time in Patent Office: 795 Days
• Field of Search: 81/9A 408/241
• US Class Current: 408/241.00R
• CPC Class Codes: B23B 45/00 Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00
• CPC Class Codes: B23B 45/006 Keys for operating the chucks
• CPC Class Codes: Y10T 279/3443 Key holding or attaching means
• CPC Class Codes: Y10T 408/96 Miscellaneous

Abstract

A Jacobs chuck key holder mounted on the hand-drill housing for pivoting movement from an out-of-the-way clearance position into meshing engagement with the Jacobs chuck, either the chuck ring or drill operative end thereafter being rotated relative to the other to cause engagement or disengagement of the drill jaws with the drill bit, and the key lacking, as unnecessary, a centering projection so that no special alignment of the key with the drill operative end is required for the aforesaid meshing engagement.

Claims

1. For use with a hand-drill motor having a housing thereabout defining a rotation axis, said housing including a mounting surface oriented perpendicular to said rotation axis and having a Jacobs chuck presenting a first set of bevel teeth rotatable about said rotation axis and located a prescribed distance from said mounting surface, an improved combination of a holder and a Jacobs chuck key presenting a second set of bevel teeth for tightening and loosening said Jacobs chuck incident to meshing engagement of said first and second sets of bevel teeth, said second set of bevel teeth being the only means on said Jacobs chuck key in meshing engagement between said Jacobs chuck key and said chuck so as to require only said meshing engagement therewith to cause rotation of said Jacobs chuck, and said holder comprising a member pivotally mounted on said mounting surface and at a selected location therealong in engagement with the shaft of said Jacobs chuck key, said selected location corresponding to the aforesaid prescribed distance of the Jacobs chuck bevel teeth from said mounting surface so as to contribute to said meshing engagement therewith by said Jacobs chuck key bevel teeth, and said holder including means to align said Jacobs chuck key to mesh for engagement with said teeth of said Jacobs chuck.

2. An improved combination of a holder and a Jacobs chuck key as defined in claim 1 including threadable means operatively arranged to prevent rotation of the shaft of said Jacobs chuck key, whereby rotational movement of the motor of said hand-drill causes tightening and loosening manipulation of said Jacobs chuck.

3. An improved combination of a holder and a Jacobs chuck key as defined in claim 1 wherein said pivotal mounting of said member is operatively arranged to permit slight movement of said member along said pivot axis to thereby facilitate the interfitting of said first and second sets of bevel teeth.

4. An improved combination of a holder and a Jacobs chuck key as defined in claim 3 including spring means opera-tively effective to normally bias said member into a clearance position out of meshing engagement with said Jacobs chuck.

5. An improved combination of a holder and Jacobs chuck key as defined in claim 2 wherein said set of bevel teeth of said Jacobs key consists of a minimum of one such tooth in depending relation from said shaft of said key.

6. For use with a hand-drill motor having a housing and a rotating operative end extending therefrom defining a rotation axis, said housing including a mounting surface oriented perpendicular to said rotation axis and having a Jacobs chuck presenting a first set of bevel teeth rotatable about said rotation axis located a prescribed distance from said mounting surface, an improved Jacobs chuck key presenting a second set of bevel teeth for tightening and loosening said Jacobs chuck incident to meshing engagement of said first and second sets of bevel teeth, said second set of bevel teeth being the only means on said Jacobs chuck key in meshing engagement between said Jacobs chuck key and said chuck so as to require only said meshing engagement therewith to cause rotation of said Jacobs chuck and also permitting unimpeded rotation of said drill operative end relatIve to said key, a holder for said key stationarily mounted on said housing and holding said key against rotation, whereby operation of said hand-drill motor is effective to cause tightening and loosening manipulation of said Jacobs chuck.

7. An improved Jacobs chuck key as defined in claim 6 wherein said holder comprises a member pivotally mounted on said mounting surface at a selected location therealong corresponding to said prescribed distance of the Jacobs chuck bevel teeth from said mounting surface so as to contribute to said meshing engagement therewith by said Jacobs chuck key bevel teeth.

8. An improved combination of a holder and a Jacobs chuck key as defined in claim 7 wherein said pivotal mounting of said member is operatively arranged to permit slight movement of said member along said pivot axis to thereby facilitate the interfitting of said first and second sets of bevel teeth.

9. An improved combination of a holder and a Jacobs chuck key as defined in claim 8 including spring means operatively effective to normally bias said member into a clearance position out of meshing engagement with said Jacobs chuck.

10. An improved combination of a holder and Jacobs chuck key as defined in claim 9 wherein said set of bevel teeth of said Jacobs chuck key consists of a minimum of one such tooth in depending relation from said key.