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. 23, 1979
Filed:
Aug. 11, 1977
Applicant:
Inventors:
James V Simone, High Point, NC (US);
Charles H Olmstead, Worcester, MA (US);
Assignee:
Wright Line Inc., Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
85 45 ; 85 / ;
Abstract
A screw having its head shaped to prevent its removal by unauthorized persons, characterized in that it has peripherally thereof an odd number of sides arranged symmetrically with respect to the center of the head and inclined to the axis of the screw to prevent removal of the screw by the use of pliers. The screw is removed by the use of a matching socket wrench.