07146736 is referenced by 20 patents and cites 33 patents.

An assisted opening folding knife having a blade with an engagement surface extending generally radially outwardly with respect to the pivot axis of the blade. A cantilevered leaf spring contacts the engagement surface and immediately urges the blade to the extended position upon the blade pivoting through a predetermined angle from the retracted position. An elongated engagement member is pivotally connected to the handle and configured for pivoting between a blade locking position and an unlocking position. In one embodiment, the cantilevered leaf spring also urges the engagement member towards the blade locking position. The engagement member automatically locks the blade in the extended position, and the cantilevered leaf spring, the blade, and the engagement member all substantially extend in the pivot plane.

Title
Folding knife with cantilevered spring
Application Number
10/930028
Publication Number
7146736 (B1)
Application Date
August 30, 2004
Publication Date
December 12, 2006
Inventor
Walter W Collins
North, 29112
SC, US
Agent
Thomas W Epting
Leatherwood Walker Todd & Mann P C
IPC
B26B 1/04
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