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:
May. 19, 2020
Filed:
May. 21, 2018
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Naoki Hoshino, Niwa-Gun, JP;
Toshiya Ohta, Niwa-Gun, JP;
Mitsuki Yoshida, Niwa-Gun, JP;
Tomoyuki Fukuchi, Niwa-Gun, JP;
Shigeki Matsunami, Niwa-Gun, JP;
Yukinori Fujimoto, Niwa-Gun, JP;
Jun Omura, Niwa-Gun, JP;
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Abstract
There is provided a caulking bolt which can be fastened by a general nut even when used to fix thin plates to each other, and which can also provide fitting strength similar to that of conventional products. The caulking bolt includes a head part and a shaft part, and has a non-circular, flat, rotation preventive protrusion formed on a seat surface of the head part. Also, the upper end of a normal complete thread part formed in the shaft part is brought close to the seat surface of the head part with a distance of 3 pitches or less, and an incomplete thread part formed at the portion of 3 pitches or less is used as a stopper part into which a metal flows when the caulking bolt is driven into a metal plate.