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:
Nov. 06, 2012
Filed:
Nov. 28, 2008
Kazunari Yoshida, Kanagawa, JP;
Masahiro Nakanishi, Kanagawa, JP;
Kazunari Yoshida, Kanagawa, JP;
Masahiro Nakanishi, Kanagawa, JP;
Tokai University Educational System, Tokyo, JP;
Abstract
A fastening body structure having a screw member which uses a module screw having a countersunk head and a washer made of a shape memory alloy. With this structure, the washer does not expand even if subjected to large fastening force and the washer can be easily removed when the screw fastening is released. The fastening body structure fastens and fixes a desired part to the installation section by using the screw member having the module screw and the washer. The module screw has a male screw used as a pair with a female screw thread section formed in the installation section. The washer has an inner diameter corresponding to the module screw. An irregular surface section is formed on a slope surface at the lower part of the head of the module screw or on the surface of the washer that makes contact with the screw.