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:
Jul. 24, 2012
Filed:
Jun. 13, 2007
Masaki Yoshida, Kodaira, JP;
Yusuke Inoue, Kodaira, JP;
Yuji Takeda, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
When a press jig is inserted into a jig insertion hole, an O-ring attached to the outer peripheral surface of the press jig is prevented from being caught on an air supply port opening to the inner peripheral surface of the jig insertion hole and damaged. In a sealing pump-up device, the opening diameter of an air supply portopening to the inner peripheral surface of a jig insertion holeprovided at one end of an air supply pathis set smaller than the strand diameters of an O-ringand an O-ring. Consequently, the width at the edge of the air supply portson which the O-ringsmay possibly be caught can be made sufficiently smaller than the strand diameter of the O-rings. When the O-ringspass on the inner peripheral side of the air supply portsin a state of press contact with the inner peripheral surface of the jig insertion hole, the amount by which the O-ringsare deformed (restored) in order to swell to the outer peripheral side so that a portion thereof fits into the air supply ports, can be reduced sufficiently.