The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Apr. 30, 1990
Applicant:
Inventor:
Ralph Petersen, DeWitt, NE (US);
Assignee:
Petersen Manufacturing Co., Inc., DeWitt, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81370 ; 81377 ; 81380 ; 81367 ;
Abstract
A quick release for a conventional plier-type, toggle-locking hand tool comprises a compound toggle link. The new link is pivotably mounted between the movable handle and the conventional toggle member. Four pivot points rather than the usual three form the 'power line' of the tool. Locking the tool involves pushing the two internal pivot points inwardly across the power line. Release involves opening the handles which moves the internal pivot points back across the power line. Depending on the dimensions of the actual hand tool, the mechanical advantage of the novel compound link is between 4 to 16.