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:
Sep. 05, 1989
Filed:
Mar. 18, 1988
Michael V Petrovich, Portland, OR (US);
Blount, Inc., Portland, OR (US);
Abstract
A hook angle gauge having a bar with a straight bottom edge that lays across the cutting corners of successive cutting links in a length of saw chain. A face plate includes a series or row of holes or openings that simulate the cross section of the file used to sharpen the cutting links. Different height placements of the openings relative to the bar edge indicate different hook angles. An operator slides the face plate across a selected cutting link side plate until an opening therein matches the configuration of the side plate cutting edge. Each opening is marked with the hook angle setting indicated by that opening to enable the operator to determine the cutting link's hook angle.