Title:
HYDRAULIC VALVE
Document Type and Number:
Japanese Patent JPS60205082
Kind Code:
A
Abstract:
PURPOSE:To prevent the occurrence of galling between each of members during operation, by constituting a transmission gear, transmitting the operation of an actuator to a pilot valve, with a flexible member. CONSTITUTION:When a drum 19b is rotated in an arrow direction by an actuator, a wire 18 is hoisted up, whereby a pilot valve 14 goes up against a spring 16, and a valve plate 14a comes off a valve seat 12e at the upper end of a cylindrical part 12d at the inner side. If so, the fluid that flowed in a hydraulic chamber 6 from a fluid inflow port 11a by way of a passage 11d flows out to a fluid outflow port 11b from the valve seat 12e. Accordingly, pressure in the hydraulic chamber 6 drops to some extent, while a main valve member 12 goes up against a spring 15, and the fluid flows in the outflow port 11b from the inflow port 11a. With this constitution, a possibility of any galling among all members during operation may no longer happen there.
Inventors:
TSUCHIYA KATSUTAKE
Application Number:
JP5938784A
Publication Date:
October 16, 1985
Filing Date:
March 29, 1984
Export Citation:
Assignee:
TOKYO TATSUNO KK
International Classes:
F16K31/40; F16K31/383; (IPC1-7): F16K31/40
Domestic Patent References:
| JP36020630A | ||||
| JPS54141010U | 1979-10-01 |
Attorney, Agent or Firm:
T. Takahashi