Torque limiting driver with easily disassembled components...

Details Torque limiting driver with easily disassembled components... Torque limiting driver with easily disassembled components...

2007-07-17

2007-07-17

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

C081S439000, C081S471000

Reexamination Certificate

active

10746107

ABSTRACT:
A driver has components that are easily disassembled for cleaning and/or sterilization. Once disassembled, the limited number of components allows for easy reassembly. The driver utilizes a cam that rides on spring fingers for determining the level of producible torque that the driver can produce. The cam and spring fingers are contained in a housing. Particularly, the spring fingers are part of a finger housing that is key lockable with the housing when assembled for movement as one unit. The cam is integral with a driver shaft and is received within the finger housing. The cam and driver shaft are limitedly rotatable with respect to the finger housing. The level of producible torque may be changed by providing cams and/or spring fingers of various dimensions. The driver is torque-limiting in one direction (tightening) and essentially non torque-limiting in the opposite direction (loosening). The various components are also large enough to be easily handled reducing the chance of lost components.

REFERENCES:
patent: 4838264 (1989-06-01), Bremer et al.
patent: 5295831 (1994-03-01), Patterson et al.
patent: 5725533 (1998-03-01), Carlsson
patent: 6308598 (2001-10-01), O'Neil
patent: 6439086 (2002-08-01), Bahr
patent: 7127955 (2006-10-01), Bondhus et al.

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