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. 24, 1991
Filed:
Sep. 10, 1990
Frederick C Hahn, Aloha, OR (US);
Kirk E Yoresen, Beaverton, OR (US);
William A Fewless, Portland, OR (US);
Robert K Emrich, Portland, OR (US);
Michael J Secrist, Portland, OR (US);
Esco Corporation, Portland, OR (US);
Abstract
A method of replacing a worn point of an excavating tooth wherein the point is held in place by a pin lock including a shearable top flange and torque-resisting, forwardly extending rib, the method including exerting a downward force on the pin lock to shear the top flange while the forwardly extending rib guides the pin lock downwardly and out of locking engagement with aligned slots in the tooth adapter nose and point rearwardly extending ear, removing the worn point and installing a new point along with a new pin lock including a top flange and forwardly extending rib.