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:
Sep. 22, 1981
Filed:
Aug. 14, 1978
Applicant:
Inventors:
Assignee:
Nittetsu Bolten Kabushiki Kaisha, Yukuashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411-2 ; 252 / ; 411368 ; 411903 ;
Abstract
A fastener set comprising a bolt body, a nut and a washer which are fitted onto the bolt body. Said bolt body has a notched portion which can be broken by a predetermined torsional force. Said nut is coated by a composition containing a ester obtained by only partial esterification of a polyol having not more than twelve carbon atoms and a fatty acid or an oxy-acid. The reaction force resulted from a fastening torque applied to the nut is transmitted to the bolt body so as to break off from the bolt body a surplus portion extending above the notched portion.