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. 09, 1976
Filed:
Nov. 25, 1974
Hikaru Murata, Gifu, JA;
Yasuji Umeda, Minokamo, JA;
Yasusada Sakurai, Gifu, JA;
Yasuo Doi, Gifu, JA;
Kayabakogyokabushikikaisha, Tokyo, JA;
Abstract
A fluid control valve, which relates to fluid control valves in which a pilot passage is opened or closed as a pilot flow is detected in the said pilot passage by means of a limit orifice mechanism located at the middle of the flow and a valve spool is switched by the differential pressure produced in the fluid passing the said limit orifice mechanism so as to effect a switch-over between unloaded and loaded states, and incorporates, as the said valve spool, a first valve spool effecting the switching action based on the differential pressure of the fluid passing the limit orifice mechanism and a second valve spool arranged in series with the first valve spool effecting a switching action being effected by the fluid pressure so that a load check function may also be provided.