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:
Feb. 13, 1990
Filed:
Jul. 19, 1989
Applicant:
Inventors:
Jeffery J Buchanan, Lexington, KY (US);
Terrance A Cassity, Paris, KY (US);
Assignee:
Square D Company, Palatine, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411508 ; 411392 ; 411417 ; 411510 ; 411913 ;
Abstract
A fastening system comprises a push in-screw out fastener having a slotted head, threaded cylindrical shank with a plurality of resilient thread segments thereon and a tubular receptacle. The diameter of the receptacle is less than the diameter of the thread segments and greater than the shank diameter such that the thread segments are deformed by insertion of the fastener into the receptacle. The receptacle has an internal thread formed at its entry. The internal thread engages the resilient thread segments to impart a removal force to the fastener when its slotted head is rotated in a counterclockwise direction.