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:
Oct. 20, 2009
Filed:
May. 23, 2006
Norio Goko, Kariya, JP;
Atsushi Sakaida, Nagoya, JP;
Toshihisa Taniguchi, Handa, JP;
Yuji Tuduki, Handa, JP;
Norio Goko, Kariya, JP;
Atsushi Sakaida, Nagoya, JP;
Toshihisa Taniguchi, Handa, JP;
Yuji Tuduki, Handa, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A workpiece holding method and holding system able to shorten the workpiece attachment/detachment time, wherein pressurized air is circulated through a nozzle of an ejector unit of a chuck at all times to make the inside of a suction chamber a negative pressure before chucking a workpiece, completion of chucking is detected based on a pressure value detected by a pressure sensor after chucking the workpiece, and the workpiece is unchucked by having a valve close an exhaust port to raise the pressure inside an exhaust chamber and introducing pressurized air from the ejector unit to the suction chamber.