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:
Dec. 19, 2023
Filed:
Jun. 12, 2019
Topura Co., Ltd., Hadano, JP;
Naoki Horiuchi, Hadano, JP;
Keisuke Hibino, Hadano, JP;
TOPURA CO., LTD., Hadano, JP;
Abstract
An external thread member capable of preventing oblique entry or insertion by a short screw tip shape is provided including, in its shank portion (), a normal thread area (), a guide thread area () provided at a tip side of the shank portion with respect to the normal thread area () and in which a guide screw thread () is formed, and a rising area () in which a transition screw thread () gradually rising from the guide screw thread () to the complete screw thread () is formed. A tapered guide portion () is provided at a tip end side of the normal thread area () and includes at least the guide thread area (). The guide screw thread () is formed on an outer periphery of the tapered guide portion () which has a maximum diameter equal to or smaller than an inner diameter of an internal thread.