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:
Nov. 16, 1999
Filed:
Oct. 22, 1998
Applicant:
Inventors:
Assignee:
SMC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
137269 ; 13759616 ; 137884 ;
Abstract
A relay surface formed on a supply-and-ejection block has opened therein a pilot supply channel and a pilot ejection channel both in communication with each directional control valve through a manifold block, a supply branch passage branching from a supply port, and an ejection branch passage branching from an ejection port. The pilot supply and ejection channels are connected to a port for supplying a pilot fluid and a port for ejecting a pilot fluid, respectively, via a relay member mounted on the relay surface.