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US 5,437,306 AGranted
Double-solenoid type electromagnetic valve
AssigneeSMC Corporation
InventorsYoshio Asou, Bunya Hayashi, Hideharu Sato, Takumi Matsumoto, Makoto Ishikawa, Ryushirou Kaneko, Keisuke Shimauchi, Shinichi Yoshimura
Life of this patent
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Abstract
A double-solenoid type electromagnetic valve having two solenoids integrally connected is disclosed. The solenoids of the electromagnetic valve have the same structure and the same external shape and have connecting mechanisms with engaging rims and engaging grooves on the sides. By connecting the connecting mechanisms with each other, the solenoids are closely connected and overlapped without any gap between them.
Claims7
A double-solenoid type electromagnetic valve, comprising:
- a main valve unit, having a main valve disc provided in a valve bore slidably in an axial direction thereof, and a pair of pistons arranged on both ends in an axial direction of said main valve disc, said main valve unit controlling a main fluid by switching over the main valve disc via said pistons driven by pilot fluid pressure;
- and
- a pilot valve unit having two solenoids for selectively applying said pilot fluid pressure on said pistons by action of the solenoids, wherein the two solenoids in said pilot valve unit have the same structure and the same external shape and are provided each with a connecting mechanism on a side thereof and are separably connected to one another via said connecting mechanism.
Dependencies are inferred from the claim text.