Compression tool jawarm member

Details Compression tool jawarm member Compression tool jawarm member

2006-02-21

2006-02-21

Crane, Daniel C. (Department: 3725)

Metal deforming

With means to actuate both elements of tool-couple

Handle actuated

C072S416000, C072S453160, C081S300000

Reexamination Certificate

active

07000448

ABSTRACT:
A pivotal jawarm for a compression tool has opposite sides, a pivot pin opening therethrough, longitudinally opposite ends on longitudinally opposite sides of the opening, and inner and outer edges between the ends and on laterally opposite sides of the opening. A stress concentrator comprising aligned recesses in the opposite sides of the jawarm extends from the inner edge toward the pivot pin opening and provides a failure point at the inner edge for consistently initiating a fatigue crack at the failure point and fracture of the jawarm from the failure point to the pivot pin opening.

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