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. 25, 1989
Filed:
May. 13, 1987
Applicant:
Inventor:
Ronald W Batten, Torrance, CA (US);
Assignee:
Hi-Shear Corporation, Torrance, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81468 ; 29517 ;
Abstract
A fastener having an external threaded pin, and an internally threaded collar freely spinnable onto the pin so as to be set to a predetermined torque. After the predetermined torque is applied, the collar is dimpled (indented) to lock the collar to the pin. The thread can be smooth so the lock is a smooth frictional running lock, or can be interrupted so material of the collar at the indentation forms a physical lock with the interrupted thread. A tool is shown that can drive and indent the collar. A method for setting the collar is also disclosed.