Wrench with flexible ring

Details Wrench with flexible ring Wrench with flexible ring

2006-01-24

2006-01-24

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Flexible

C081S060000

Reexamination Certificate

active

06988430

ABSTRACT:
A ratchet wrench is provided having a flexible ring forming the head where the flexible ring may have serrations on its inner surface and forms a free end having a pawl thereon. The flexible ring is formed as one piece with the handle of the wrench. Upon tightening, the flexible ring will tighten down on a fastener and upon a non-tightening rotation, the pawl will ratchet against the corners of the fastener according to the self energizing geometry of the wrench where an arc is provided on a shoe of the handle which is eccentric to the arc of the flexible ring. In an embodiment, a gear insert is provided within the flexible ring for engagement with the fastener, torquing and ratcheting of the flexible ring being relative to the gear insert. In an embodiment, the a insert may be provided that has a substantially smooth outer surface including circumferential engagement features for engaging a substantially smooth facing surface of the flexible ring.

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