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:
Aug. 16, 1988
Filed:
Apr. 22, 1985
Applicant:
Inventors:
Ollney B Terrell, Jamestown, NC (US);
Larry J Arnold, Statesville, NC (US);
Assignee:
Farley Metals, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411187 ; 411399 ;
Abstract
This disclosure concerns a light gauge self-tapping sheet metal screw having a threaded shank and cap-type head, which head has a tool-engaging surface. Between the cupped recess of the head and the shank are a plurality of pyramidal ribs that extend partway around the shank for deforming the edge of the holes in the sheet metal up against the recessed surface of the cup of the head to increase the stripping and backout torque of the screw.