Tool Chuck
OwnerJames A. Rinnerinventor
Life of this patent
Estimating the term…
Abstract
A tool chuck (10) having a spring (58) for rotating a collar (13) to cam-lock a bit (11) into the chuck upon insertion of the bit into the chuck. Ball detents (32) and cams (57) serve to lock the bit into the chuck. A second spring (41) serves to eject the bit when so desired. There is a method for automatically locking the bit into the chuck, and there is indicia on the chuck for directing the user as to effecting the release of the bit.
Claims17
In a tool chuck (10) having body (12) with a longitudinal axis (A) and an opening (31) extending along said axis for releasably receiving a tool (11) movable into said opening along said axis, a collar (13) is movable on said body and relative to said axis and has cam means (57) thereon, a first spring (41) is in said body for urging relative to said tool in said opening and in the axial direction, a second spring (58) is effective between said body and said collar for effecting movement of said collar relative to said body, tool restraining detents (32) are on said body cooperative with said cam means and with the configuration of said tool for releasably holding said detents against said tool for locking said tool in said chuck in response to movement of said collar, the improvement comprising:
- said springs (41, 58) being arranged to be individually and sequentially operative and said with first spring (41) being in operative relationship with said tool (11) upon insertion of said tool into said opening (31) for firstly holding said cam means (57) in the tool unlocked mode and for effecting subsequent release of said tool, and
- said second spring (58) being operative on said collar (13) for secondly setting said cam means into locking relationship with said detents (32) for the locking of said tool in said chuck.
In a tool chuck (10) having body (12) with a longitudinal axis (A) and an opening (31) extending along said axis for releasably receiving a tool (11) movable into said opening along said axis, a collar (13) movable on said body and relative to said axis and having cam means (57) thereon, tool restraining detents (32) on said body cooperative with said cam means and with the configuration of said tool for releasably holding said detents against said tool for locking said tool in said chuck in response to movement of said collar, the improvement comprising:
- two springs (41, 58) in said body for urging relative to said collar and said tool in said opening and for urging respectively in the axial and rotational directions whereby axial urging releases said collar for rotational movement effective for locking said detents onto said tool.
A method of releasably locking a tool (11) in a chuck (10) having a body (12) and a collar (13) and detents (32) which are mutually cam-operative to lock said tool in the chuck, the improvement comprising:
- inserting the tool into the chuck and thereby displacing a member (38) which is releasably restraining said collar and thereby release said collar, and
- applying a spring (58) against said collar for rotating said collar in response to the force from said spring and thereby effect the cam-operative locking of said tool in the chuck.
In a tool chuck (10) having body (12) with a longitudinal axis (A) and an opening (31) extending along said axis for releasably receiving a tool (11) movable into said opening along said axis, a collar (13) movable on said body and relative to said axis and having cam means (57) thereon, a tool restraining detent (32) on said body cooperative with said cam means and with said tool for releasably holding said detent against said tool for locking said tool in said chuck in response to movement of said collar, the improvement comprising:
- a spring (58) in said body and being forceful on said collar for urging said collar relative to said body and said tool in said opening for locking said detent onto said tool, and
- a control (38) operative relative to said spring for restraining said spring and being in said opening for displacement by said tool being inserted into said opening and for thereby releasing the restraint on said spring and thereby having said spring force on said collar for the locking by said detent.
Dependencies are inferred from the claim text.