Patent ID: 6848641
Filing Date: 2005-02-01
Classification: B65H,F15B

Abstract:
1. An actuating valve for a pneumatic cylinder ( 8 ) comprising a first pressure chamber and a second pressure chamber ( 8 . 3 , 8 . 4 ) separated from one another by a piston connected on a piston rod ( 8 . 1 ), the actuating valve comprising: two first 3/2 port directional control valves as relay valves (L a valve system connected between the relay valves (L wherein the valve system, upon actuation of one of the two relay valves, loads the first pressure chamber with compressed air while the second pressure chamber is relieved of pressure via the venting throttle; wherein the valve system comprises two second 3/2 port directional control valves (L wherein the valve system further comprises a first branch line (L wherein the branch lines (L wherein the valve system further comprises a first control line (L wherein the first and second control lines control the first and second ones of the second 3/2 port directional control valves (L