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:
Dec. 02, 1997
Filed:
Jan. 25, 1996
Applicant:
Inventor:
John A Louw, Rancho Palos Verdes, CA (US);
Assignee:
Fairchild Fasteners-U.S., Torrance, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; F16B / ;
U.S. Cl.
CPC ...
411-3 ; 411361 ; 4119372 ;
Abstract
A self-locking internally threaded nut has a deltoid shaped locking section having circumferentially spaced protrusions. The protrusions form a surface adapted to be engaged by a deltoid driver which tightens the nut onto a bolt to a predetermined axial load. At the predetermined load the protrusions are plastically deformed inwardly on the nut so that the driver rotates freely on the nut. When the protrusions are inwardly deformed, the deformed material impinges on the bolt, thereby rotationally locking the nut on the bolt.