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:
Mar. 13, 2001
Filed:
Sep. 17, 1999
Qinghai Yang, Ichikawa, JP;
Hirosuke Yamada, Ibaraki-ken, JP;
Kazuya Tamura, Soka, JP;
Nobuhiro Fujiwara, Ibaraki-ken, JP;
SMC Kabushiki Kaisha, Tokyo, JP;
Abstract
A lift amount of a valve plug is controlled with respect to a period of time from valve-closing operation instruction time for an electric opening/closing valve to arrival at a preset quick valve-closing operation position at which a flow line of a fluid discharged from a discharge port of a nozzle is in a constricted state, in accordance with a driving action of an electric actuator. The valve plug of the electric opening/closing valve is controlled to be at a closed position after the arrival at the quick valve-closing operation position. Accordingly, it is possible to prevent the incontinent liquid drip from the nozzle during the valve-closing operation of the electric opening/closing valve.