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:
Mar. 14, 1989
Filed:
Dec. 11, 1987
Applicant:
Inventor:
Peter O Peterson, Ross, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; E04C / ;
U.S. Cl.
CPC ...
411231 ; 411433 ; 29446 ; 295251 ; 52227 ;
Abstract
A fastener device for automatically maintaining a tightening torque on a threaded structural member under stress which would otherwise become loose when the stress is reduced. The device comprises a first nut member, a second nut member axially aligned with the first nut member and a coiled spring connected at its opposite ends between the first and second nut members. When the nut members are threaded to the first and second nut members and the second nut member is turned and held, as by a stop means, torsional energy is stored in the spring and later becomes available to automatically turn and tighten the first nut member, wherever it becomes loose.