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:
May. 21, 2013
Filed:
May. 05, 2010
Ronald C. Clarke, Phoenix, AZ (US);
Ronald C. Clarke, Phoenix, AZ (US);
Other;
Abstract
A washer body bearing hardened balls in apertures in the washer body provides a counter-torque resistance in a fastening. The hardened balls form projections that indent the underside of a fastener head and an adjacent fastening joint surface during tightening of the fastening to prevent rotation of the fastener head while a nut is driven to tighten or loosen the fastening. A reservoir portion of the apertures in the washer around the balls receives the material displaced during indention to allow full contact of the washer with the fastener head and joint surface. The hardened balls provide point loads for ready indentation upon minimal loading to prevent rotation of the fastener, obviating the need for a counter-torque wrench.