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:
Jul. 21, 2009
Filed:
Nov. 09, 2007
Applicants:
Kenneth Steigerwalt, Orangeville, PA (US);
Matthew Lerch, Sussex, WI (US);
Inventors:
Kenneth Steigerwalt, Orangeville, PA (US);
Matthew Lerch, Sussex, WI (US);
Assignee:
Mentor Group, L.L.C., Oregon City, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B26B 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A folding knife incorporates an opening assist mechanism that functions to drive the blade from the closed to the open position. The knife may be either automatic or semi-automatic. In one embodiment a pair of spring arms, one located to each lateral side of the blade is interconnected at their forward ends with a pin and a roller sleeve. The spring arms apply pressure to the tang of the blade when the blade is closed.