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:
Jun. 02, 1992
Filed:
Sep. 23, 1988
Applicant:
Inventor:
Edwin E Hatter, Torrance, CA (US);
Assignee:
Hi-Shear Corporation, Torrance, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ; B21H / ;
U.S. Cl.
CPC ...
72 88 ; 470 11 ;
Abstract
A fastener which includes a threaded pin having a notched helical thread to receive a threaded collar which, after being set to a torque, is deformed to move material into some notches on the thread to form a lock to prevent unthreading. The notched thread can be formed by a three-section roll die, the first section of which forms the thread, the second of which notches the thread, and the third section of which smoothes the thread. The invention comprehends the die, the die forming method, the pin, the pin and collar, and a joint formed with the pin and collar.