Keyless chuck

Patent 5553873 Issued on September 10, 1996. Estimated Expiration Date:

July 1, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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911012

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1123541

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Inventors

Assignee

Power Tool Holders Incorporated

Application

No. 269553 filed on 07/01/1994

US Classes:

279/62, Conical sleeve279/902KEYLESS TYPE SOCKET

Examiners

Primary: Bishop, Steven C.

Attorney, Agent or Firm

Dority & Manning

Foreign Patent References

0043785A1 EP. 01/12/1982
0340310A1 EP. 04/12/1989
0433187A1 EP. 12/12/1990
0618029A1 EP. 10/12/1994
2606691 FR. 05/12/1988
3411127 DE 10/12/1985
3439668A1 DE. 04/12/1986
4023304C1 DE. 09/12/1991
63-216604 JP. 09/12/1988
401027804A JP. 01/12/1989
0092009 JP. 04/12/1989
405038608 JP 02/12/1993
1330065 GB. 09/12/1973
1565048 GB. 04/12/1980
WO8903267 WO. 04/12/1989
WO9112914 WO. 09/12/1991

International Class

B23B 031/12

Abstract

A three-jaw chuck is provided with a unitary nut rotatably mounted relative to the body and a retaining member located so as to contact a portion of the unitary nut to prevent axial movement of the nut in the forward direction. The nut may include a first portion of a first outside diameter and a second portion extending axially outward from the first portion with an outside diameter less than the first outside diameter. A sleeve retaining snap ring may be provided engaging the sleeve for retaining the sleeve on the body.