Wrenchless nut device

Details Wrenchless nut device Wrenchless nut device

2006-04-03

2009-08-04

Estremsky, Gary (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

Multipart

C411S432000

Reexamination Certificate

active

07568873

ABSTRACT:
A detachable fixing device for engaging a bolt comprises a nut and a lever pivotally attached to the nut. The lever is provided with two lugs, whereas the nut comprises two articulated, threaded and spring-biased bolt grips. In a home position of the lever, the grips are moved apart to allow the loose slipping of the nut onto the bolt. In an active position of the lever, the grips are pressed on by the lugs, whereby the bolt grips engage the bolt with the thread.

REFERENCES:
patent: 3709088 (1973-01-01), Pitzer
patent: 4281857 (1981-08-01), Randall
patent: 4556352 (1985-12-01), Resnicow
patent: 4802804 (1989-02-01), Hirohata
patent: 5598994 (1997-02-01), Olewinski et al.
patent: 6004064 (1999-12-01), Franz
patent: 6293450 (2001-09-01), Aron
patent: 6851905 (2005-02-01), Manfred

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