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:
Aug. 11, 2015
Filed:
May. 17, 2010
Yoshiaki Maeda, Kyoto, JP;
Yoshiaki Maeda, Kyoto, JP;
Shimadzu Corporation, Kyoto-Shi, JP;
Abstract
When a sealing member held in a cavity of a housing is pressed by a cap toward the bottom of the cavity, the side surface of the sealing member is inclined to laterally expand. As a result, in the opening-side portion of the sealing member, the side surface is strongly pressed on the wall surface of the cavity, causing a strong friction force at the contact surface, which prevents the pressing force applied from the opening side from being transmitted to the bottom side. Therefore, at the beginning of the pressing operation, the internal stress of the sealing member is higher in the opening-side portion than in the bottom-side portion. With the lapse of time from the beginning of the pressing operation, the opening-side portion of the sealing member under the higher internal stress gradually moves toward the bottom side against the friction force.