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. 11, 1983
Filed:
Aug. 17, 1981
Applicant:
Inventor:
Igor Fraiberg, Fort Worth, TX (US);
Assignee:
Gearhart Industries, Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25G / ; F16D / ; F16G / ;
U.S. Cl.
CPC ...
403320 ; 285 92 ; 411148 ; 411134 ;
Abstract
A resilient holding device comprising a looped helical spring or a closed loop of interconnected essentially circular disc elements confined to an annular cavity circumferentially within a threaded joint or coupling. By tightening the threaded joint or coupling such as to engage the confined spring, a latching effect is created that requires a reverse torque for disassembly that exceeds the torque required to tighten. Such a torque biased threaded coupling is particularly useful in oil field applications.
Fraiberg, Igor. (1983). Threaded joint toggle-locked with a helical spring (U.S. Patent No. 4408927). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4408927
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile