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:
Dec. 17, 2013
Filed:
Mar. 22, 2011
Matthew J. Lerch, Sussex, WI (US);
Kenneth A. Steigerwalt, Orangeville, PA (US);
Matthew J. Lerch, Sussex, WI (US);
Kenneth A. Steigerwalt, Orangeville, PA (US);
Other;
Abstract
A single spring arm assisted knife includes a base frame and a blade. A spring arm is formed as an integral portion of the base frame. A frame lock is also formed as an integral portion of the base frame. One end of the blade is pivotally retained by one end of the base frame at a blade pivot point. A thumb stud is secured to the blade. A stop pin is pressed into the base frame, adjacent the blade pivot point. A roller is pivotally retained on one end of the spring arm. An assist cam surface is formed on the one end of the blade to receive the roller. A second embodiment of the single spring arm assisted knife includes a spring arm which is not an integral portion of the base frame, but is attached to the base frame.