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:
Oct. 11, 1988
Filed:
Jun. 16, 1986
Gene E Olson, Kenosha, WI (US);
Paul B Lemens, Kenosha, WI (US);
Snap-on Tools Corporation, Kenosha, WA (US);
Abstract
The open-end wrench has a pair of jaws with parallel planar jaw surfaces. In each jaw surface is a configured notch having a planar drive surface, a clearance surface and a spacing surface between the drive surface and the clearance surface. The two clearance surfaces are on segments of a circle having a diameter greater than the across-corners dimension of the fastener to be tightened by the wrench. The distance between the planes of the driving surfaces is slightly greater than the across-sides dimension of the fastener. The spacing surface in each notch is a segment of a circle having a relatively small radius of curvature and is tangent to the associated clearance surface.