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. 24, 2000
Filed:
May. 20, 1998
Applicant:
Inventor:
Shigeki Matsunami, Gifu-ken, JP;
Assignee:
Aoyama Seisakusho Co., Ltd., Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411311 ; 411417 ;
Abstract
A self-locking fastener wherein crests of respective threads of a part of a group of threads on the self-locking fastener are deformed to provide a group of lock portions so that the respective threads have a cross section of a trapezoidal-shape over an arcuate region of 10 to 40 degrees about an axis of the self-locking fastener in a cross section perpendicular to the axis. In addition a region, in which a group of the lock portions are formed in an axial direction of the self-locking fastener, is such that when the self-locking fastener is screwed into a nut, a major part of the group of lock portions are screwed into threads of the nut.