Title:
FLOW RATE CONTROL LOCK VALVE ASSEMBLY
Document Type and Number:
Japanese Patent JPS51119476
Kind Code:
A
Abstract:
A unitary pilot-operated bi-directional cylinder lock valve and pressure-compensated flow control valve arrangement, having a common housing with internal porting connecting a pair of oppositely acting normally closed check valves operated to open by fluid pressure in one direction thereagainst on the inlet side and by a common free-floating inlet-pressure-responsive pilot piston therebetween. Also in the common housing and ported in line with each of the check valves are two pressure-compensated flow control valves which restrict fluid flow through the check valves as a function of flow pressure. The pressure-compensated flow control valves are also oppositely acting and each senses and acts to reduce fluid flow in response to pressure build-up in an opposite direction from that of the other. The unitary lock valve and pressure-compensated flow control valve is connected in line with one or more hydraulic cylinders of an operating table or other hydraulic cylinder-operated apparatus, with the exit/entrance ports from the pressure-compensated flow control valves connected to the opposite ends of the hydraulic cylinder or cylinders.
Inventors:
RARII DEI MITSUCHIERU
EDOWAADO EMU MEISON
EDOWAADO EMU MEISON
Application Number:
JP3205776A
Publication Date:
October 20, 1976
Filing Date:
March 25, 1976
Export Citation:
Assignee:
AFFILIATED HOSPITAL PROD
International Classes:
A61G13/02; F15B13/01; (IPC1-7): F15B11/08
Previous Patent: POSITION CONTROL DEVICE
Next Patent: HYDRAULIC PRESSURE DRIVE DEVICE FOR HEATING FURNACE
Next Patent: HYDRAULIC PRESSURE DRIVE DEVICE FOR HEATING FURNACE