Directional control valve for pneumatic cylinder

Details Directional control valve for pneumatic cylinder Directional control valve for pneumatic cylinder

1989-11-28

1991-11-19

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Both inlet and exhaust controlled by motive fluid pressure...

91403, 91461, 13759616, 1376275, F15B 13043

Patent

active

050656651

ABSTRACT:
A directional control valve for a penumatic cylinder in which a piston of the cylinder can be lowered and elevated in a high speed with a minimum air consumption and the lowering/rising speed of the piston can be controlled before it reaches the upper/lower end portions to prevent bounding of the piston. The directional control valve includes a first pressure chamber communicating with an air supply, a second pressure chamber communicating with one of cylinder chambers divided by the piston of the cylinder, an exhaust pressure port, a pressure controlling mechanism, a pressure controlling and changing means which forms a pressure controlling chamber and a pressure receiving chamber, a first valve member for communicating the first pressure chamber and the second pressure chamber, a second valve member for communicating the second pressure chamber and an atmospheric pressure chamber, a third valve member for communicating the second pressure chamber and a pressure-receiving member, and a fourth valve member which is communicating with the third valve member, the air supply and a pressure control chamber.

REFERENCES:
patent: 4425940 (1984-01-01), Cook
patent: 4531548 (1985-07-01), Gottling et al.
patent: 4638837 (1987-01-01), Buike et al.

Affiliated with

Also associated with

Rating

Directional control valve for pneumatic cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Directional control valve for pneumatic cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional control valve for pneumatic cylinder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1362474