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:
Apr. 18, 1978
Filed:
Sep. 12, 1974
Applicant:
Inventor:
Frederick A Simmons, Framingham, MA (US);
Assignee:
Phillips Screw Company, Natick, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
85 45 ; 145 / ;
Abstract
A screw head is provided with projections on selected of the driver-engageable surfaces of the head to interlock with surfaces and edges of the driver to reduce the tendency for the driver to slip out of engagement with the screw during driving and also to provide a temporary stick-fit between the driver and the screw.