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:
Jan. 08, 2013
Filed:
Jun. 03, 2009
Tetsuro Furuhata, Nagoya, JP;
Yuichi Miura, Kariya, JP;
Tetsuro Furuhata, Nagoya, JP;
Yuichi Miura, Kariya, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A tool clamping device includes: a tool holder having a two-face restraint portion constituted by a tool taper portion and a tool end surface; a spindle having a spindle taper portion facing the tool taper portion and a spindle end surface facing the tool end surface, wherein the tool holder is clamped to the spindle by performing an operation to pull the tool holder in toward the spindle; and a clamping unit housed in the spindle, wherein, when the tool end surface is in contact with the spindle end surface and the tool taper portion is fitted into the spindle taper portion, a gap is formed between the tool taper portion and the spindle taper portion.