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. 01, 2000
Filed:
Apr. 26, 1999
Applicant:
Inventors:
Tsuneo Ishigaki, Yawara-mura, JP;
Kenji Waragai, Yawara-mura, JP;
Assignee:
SMC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
137341 ; 251167 ;
Abstract
A high-vacuum valve arranged to prevent conduction of heat from a valve element to a low-temperature part through a valve shaft. After the valve element has been moved to a position facing opposite to a valve seat by rectilinear motion of the valve shaft, the valve element is pressed against the valve seat to close the valve by pivotal motion of the valve shaft. A heater is provided in the valve shaft in close contact with it. Wiring is connected to the heater to supply it with electric power from outside the high-vacuum valve.