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:
Jul. 25, 2000
Filed:
Jun. 22, 1998
Applicant:
Inventors:
Assignee:
SMC Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ; B65D / ; B05B / ; F23D / ; F23D / ; F23D / ;
U.S. Cl.
CPC ...
25112904 ; 222571 ; 239119 ;
Abstract
A opening and closing valve comprises ROM in which a plurality of valve-closing program control patterns are stored in order to avoid liquid drip when the valve is closed. The valve further comprises a control unit for controlling a valve plug lift position in a direction to close the valve by controlling an amount of electric power application to a linear voice coil type driving unit in accordance with the valve-closing program control pattern.