Keyless chuck construction

Details Keyless chuck construction Keyless chuck construction

B - Operations, Transporting

23

B

29/25

B23B 31/20 (2006.01) B23B 31/12 (2006.01)

Patent

CA 1134127

- 1 - ABSTRACT KEYLESS CHUCK CONSTRUCTION A chuck construction for use in association with a power tool or the like. The construction is particularly adaptable for use as a keyless chuck and comprises a base suitable for attachment to the driven shaft of the tool and a collar threadably received by the base. Jaw means are adapted to receive a work piece such as a drill bit, and rota- tion of the collar relative to the base operates to drive the jaw means into gripping engagement with the work piece. A truncated cone is interposed between the collar and jaw means, and a thrust washer is interposed between the base and jaw means. The structure permits the utilization of plastic for the collar and base. Other parts including the jaws, the force-applying cone, and the thrust washer are produced of hard metal, and these members are arranged so that the hard metal jaws and other hard parts do not damage the plastic. The thrust washer can be attached by means of an oppositely threaded fastener or other suitable means whereby the con- struction can be utilized in both forward and reverse opera- tion of the tool.

344948

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