Title:
PROPORTIONAL CONTROL OF AIR VALVE AND PROPORTIONAL AIR FLOW AMOUNT CONTROL VALVE
Document Type and Number:
Japanese Patent JPS60159406
Kind Code:
A
Abstract:
A proportional air control valve including a flow control element (43), such as a spool, and a pair of springs (54, 56), at each end, one (54) of which is relatively light in weight and which normally holds a flow control element (43) in its closed position as shown and the other (56) of which has a substantially higher rate and which is effective to resist further movement of the flow control element (43) in its opening direction. When the element has moved a predetermined amount from its closed position. The valve is operated by applying a pulsing actuating force, e.g. by solenoids, to the flow control element (43).
Inventors:
ROOGAN HARORUDO MATSUSHISU
Application Number:
JP829185A
Publication Date:
August 20, 1985
Filing Date:
January 19, 1985
Export Citation:
Assignee:
ROSS OPERATING VALVE CO
International Classes:
F16K11/07; F15B13/043; (IPC1-7): F15B13/043
Attorney, Agent or Firm:
Teruichi Hase