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:
Sep. 02, 1986
Filed:
May. 02, 1985
Applicant:
Inventor:
Tadayoshi Uehara, Sagamihara, JP;
Assignee:
Aida Engineering, Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13762415 ; 137601 ; 1376242 ;
Abstract
A new flow control valve comprises valve openings, having valve seats opened and closed by poppets, provided in fluid passages extending from an inlet port to an outlet port in the valve body, and a control mechanism to produce a changeover of pilot pressure and a setting of time lag in response to a pulse signal of variable frequency from a pulse oscillator provided for a pilot control section, the openings at the valve seats being opened and closed through the control of the frequency as well as the setting of the time lag, so that a flux of the fluid can be controlled exactly.