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:
Apr. 26, 2011
Filed:
Jan. 16, 2004
Applicants:
Tomoyuki Kojima, Tokyo-To, JP;
Shigeru Matsukawa, Tokyo-To, JP;
Hiroaki Abe, Tokyo-To, JP;
Inventors:
Assignee:
Tokyo Weld Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F17D 3/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum suction system comprises a work conveyor tablehaving work receiving openings, and a table basehaving vacuum suction channelswhich communicate with the work receiving openingsof the conveyor table. The work receiving openingsand the vacuum suction channelscommunicate with a vacuum generation sourcevia a vacuum pipe. A negative pressure sensoris disposed on the vacuum pipe. Based on a signal from the negative pressure sensor, a compressed air generation sourcesupplies a compressed air to the vacuum pipeand thereby stabilizes the vacuum level in the vacuum pipe