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:
Sep. 20, 2022
Filed:
Jun. 29, 2018
Hi-lex Corporation, Hyogo, JP;
Shinsaku Koarashi, Hyogo, JP;
HI-LEX Corporation, Hyogo, JP;
Abstract
A tunnel device includes a base portion, a shaft to be connected to the base portion at one end of the shaft, and a tip portion to be connected to another end of shaft. The base portion is provided with a shaft connection portion to which the one end of shaft is connected. The shaft is provided with a shaft-side screw portion at the one end of the shaft. The shaft connection portion includes a shaft housing portion having an inner diameter substantially same as an outer diameter of the one end of the shaft, and a base-portion side screw portion provided on a further inner side relative to the shaft housing portion. The base portion and the shaft are fixed to each other by screwing between the shaft-side screw portion and the base-portion side screw portion.