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:
Feb. 08, 2022
Filed:
Sep. 20, 2019
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Abstract
The staking bolt of the present invention includes a headand a shankhaving an external thread. At the upper end of the shank, a ring-shaped protrusionand a ring groovelocated closer to the head relative to the ring-shaped protrusionare formed. The headis flat, and on the bearing face, a whirl-stop protrusionhaving a plurality of radially extending armsprotrudes with a thickness of t. The minimum diameter D between respective armsis larger than the outer diameter d of the ring-shaped protrusion, and t×(D−d)/2 which is the longitudinal cross-sectional area A of the minimum diameter portion of the whirl-stop protrusionis equal to or greater than the longitudinal cross-sectional area of the ring groove