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:
Jul. 14, 2026
Filed:
Aug. 31, 2023
Wen-pin Huang, Kaohsiung, TW;
Wen-Pin Huang, Kaohsiung, TW;
Abstract
A fastening device includes a reverse self-tapping screw including a nut and a threaded shank having a tapered section and a threaded section wherein the tapered section is a reverse self-tapping screw formed on the threaded shank adjacent to the nut and has a length of d/4 to d/3; the reverse self-tapping screw is a screw having a tapered surface of 1.5×d/16; and the threaded section is a forward threaded screw; and an anti-loosening assembly including an internally threaded fastening element and a retaining ring. The internally threaded fastening element includes a nut member and an anti-loosening member having a plurality of spiral constriction grooves. The spiral constriction grooves have an inclined angle of 30°-60° with respect to an axis thereof, and an annular groove for securely receiving the retaining ring.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile