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. 23, 2001
Filed:
Oct. 27, 1999
Applicant:
Inventors:
Qinghai Yang, Ichikawa, JP;
Masayuki Hosono, Tokyo, JP;
Assignee:
SMC Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 1/304 ;
U.S. Cl.
CPC ...
F15B 1/304 ;
Abstract
Disclosed is an actuator control circuit which adopts a meter-in control system to control the displacement speed of a piston of a pneumatic cylinder and which is provided with a first pressure control valve to be in a free flow state when compressed air is supplied to the pneumatic cylinder and a second pressure control valve for retaining discharge pressure of compressed air discharged from the pneumatic cylinder to be a previously set predetermined pressure.