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:
Oct. 20, 2020
Filed:
Feb. 21, 2019
Applicant:
V-tex Corporation, Shinagawa-ku, Tokyo, JP;
Inventors:
Hideaki Nagai, Hitachinaka, JP;
Tomohiro Sawahata, Hitachinaka, JP;
Assignee:
V-Tex Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 51/02 (2006.01); F16K 3/02 (2006.01); F16K 37/00 (2006.01); F16K 3/18 (2006.01);
U.S. Cl.
CPC ...
F16K 51/02 (2013.01); F16K 3/0254 (2013.01); F16K 3/18 (2013.01); F16K 37/0041 (2013.01);
Abstract
A method of controlling a vacuum valve includes instructing an actuator to reduce an operating speed so that an amplitude falls within the first threshold value when the amplitude obtained from a vibration sensor exceeds a first threshold value and a second threshold value. The method also includes instructing the actuator to return to the operating speed when the amplitude obtained from the vibration sensor is below the second threshold value.