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:
Apr. 09, 2024
Filed:
Feb. 03, 2020
Applicant:
Topura Co., Ltd., Hadano, JP;
Inventors:
Assignee:
TOPURA CO., LTD., Hadano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 33/02 (2006.01);
U.S. Cl.
CPC ...
F16B 33/02 (2013.01);
Abstract
To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion () is partially provided on a flank surface () of a screw thread ridge provided on a screw thread shaft main body (), a screw thread ridge () in a section where the recessed portion () is formed is smaller than a regular screw thread ridge (), and a ridge height (H) in a distal end portion in a screwing direction is lower than a ridge height (H) in a rear end portion in the screwing direction W.