Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Patent
1996-12-23
1998-09-29
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
81476, B25B 23157
Patent
active
058132988
ABSTRACT:
A torque tool which interfaces between a standard drive socket tool and a fastener intended to be tightened which includes an elongated cylinder having a movable element at one end intended to insertably receive a connection with the standard drive socket tool and a coupler movably carried at the opposite end of the cylinder for detachably connecting with a conventional socket to which the fastener is coupled. Inbetween the coupler and the socket tool connection, there is provided a preset torque device which establishes a torque range insuring that the fastener will not be tightened either too tight nor too loose. This device is an expansion helical spring and bears against a gear arranged in rotary sliding relationship with respect to the coupler for joining with the socket engaging the fastener. The member receiving the drive socket tool includes gear teeth which, in combination with the above-mentioned gear, are splined with internal gear teeth formed in the cylinder to house the torque range device.
REFERENCES:
patent: 4346633 (1982-08-01), Rendl
patent: 4964319 (1990-10-01), Chang
IBM Technical Disclosure Bulletin, vol. 24, No. 2, Universal Troque control screwdriver, Jul. 1981.
Marrs Roger A.
Smith James G.
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