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. 02, 2021
Filed:
Nov. 20, 2017
Topura Co., Ltd., Hadano, JP;
Kuninori Matsumoto, Hadano, JP;
Mayumi Matsuno, Hadano, JP;
TOPURA CO., LTD., Hadano, JP;
Abstract
An external thread member capable of performing a fastening operation efficiently without increasing the number of parts by assembling a collar into the external thread member. The external thread memberincludes a shaft portioninserted into a mounting holeof a mounting memberthrough a collar, and the mounting memberis fastened to a fastening member. The shaft portionincludes a threaded portionand a neck portion. The collaris mounted on the neck portionso as to be rotatable relative to each other and is engaged with the threaded portionwhereby retention is achieved. A counterbore holeis formed in an opening close to the mounting holeof an internal thread holewith a tubular portioninserted into the mounting holeof the collar