Title:
LIQUID PRESSURE CHANGEEOVER VALVE
Document Type and Number:
Japanese Patent JPS5686269
Kind Code:
A
Abstract:
PURPOSE:To prevent a liquid from leakage at the time of changing over by a method wherein springs are mounted between spools and between a spindle at the direction being moved by an external force and the body respectively, and a poppet type value effective to a sealing is employed. CONSTITUTION:When a pilot piston 1 moves, spindles 2a, 2b move to the right direction resisting against a spring 3. At this time, since a spring 12 between both spools 4a, 4b is compressed by the spring 3, the spring force works to a valve seat part 7a. When the spindle 2b moves to the right direction, a contact part 17 with an end part of the spool 4b is going to separate, as a result, the spool 4b moves to the right direction becoming an integral body with the spindle 2b, by means of the spring 12. In this way, since a poppet type valve effective to sealing is employed, the liquid leakage at the time of a change-over is eliminated.
Inventors:
FUKUDA SHIYOUJI
FUJITA MASARU
SUDA SEIZABUROU
MIZUTANI KATSUHIKO
FUJITA MASARU
SUDA SEIZABUROU
MIZUTANI KATSUHIKO
Application Number:
JP16086879A
Publication Date:
July 13, 1981
Filing Date:
December 13, 1979
Export Citation:
Assignee:
KOGYO GIJUTSUIN
International Classes:
F16K11/16; (IPC1-7): F16K11/16