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:
Jun. 05, 2012
Filed:
Jan. 25, 2006
Jiro Osawa, Toyokawa, JP;
Takayuki Matsushita, Toyokawa, JP;
Jiro Osawa, Toyokawa, JP;
Takayuki Matsushita, Toyokawa, JP;
OSG Corporation, Aichi, JP;
Abstract
A shrink-fit tool unit increases the transmission force of rotary power and also improves workability when inserting the rotary tool into the tool holder. A tool holder and a rotary tool to be used for the shrink-fit tool unit are also disclosed. Since a first engaging part and a second engaging part are configured to engage with each other simply by inserting a cylindrical terminal area of a rotary tool, typically, a thread forming tap, into a chuck of the tool holder, even when the machining load receiving from a work piece act both in forward and reverse directions relative to the circumferential direction, it is possible to increase the transmission of rotary power.