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:
Sep. 12, 2000
Filed:
Oct. 14, 1998
Hidenao Suzuki, Fujisawa, JP;
Kuniaki Horie, Yamato, JP;
Kiwamu Tsukamoto, Chigasaki, JP;
Yuji Araki, Fujisawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A valving device can operate stably to provide switching or flow rate control operations, even when it is used for controlling thermodynamically unstable gases. The valving device including a valve casing having an internal passage for process fluids. A valve body is movable against a valve seat for adjusting opening of the internal passage, and a valve driving mechanism can drive the valve body. A flexible member is provided for separating a fluid handling space including the internal passage from a valve mechanism space for housing the valve driving mechanism. A thermal medium space is formed within the valve mechanism space for receiving a thermal medium for providing heat to the valve body.