06145202 is referenced by 71 patents and cites 30 patents.

This invention relates to a mechanism in a folding knife that urges the blade to move to an open and alternatively to a closed position. The knife generally cnsists of a blade member having a tang extending outwardly from the blade; a handle having at least one recessed portion; a bar pivotally connecting the tang and the handle; and a bias element engaging the blade wherein the bias element is housed within the recessed portion of the handle. Generally, in the present invention, the blade must be moved manually a certain distance whereupon the mechanism serves to complete the movement of the blade without the application of further outside force by the user.

Title
Opening and closing assisting mechansim for folding knife
Application Number
9/96870
Publication Number
6145202
Application Date
June 11, 1998
Publication Date
November 14, 2000
Inventor
Kenneth J Onion
Kapolei
HI, US
Agent
Kolisch Hartwell Dickinson McCormack & Heuser
Assignee
Kai U
OR, US
IPC
B26B 1/04
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