F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
121/70
F15B 13/00 (2006.01) F15B 11/08 (2006.01)
Patent
CA 1225291
ABSTRACT OF THE DISCLOSURE A pressure medium actuated servomotor system is disclosed which includes a piston sliding in a cylinder. The piston limits within the cylinder two chambers, each being connected by a first individual line to a pressurized medium source. A second individual line for each of the chambers connects the chamber to a pressurized medium sink. A control valve is disposed in one of the two connecting lines of each chamber. A restructure is arranged in the second connecting line of each piston chamber. At least a first one of the two control valves is connected to an external control line. According to the invention, the second control valve is operable by pressurized medium and communicates over an internal control line with the piston chamber to which the control valve communicating with the external control line is connected. The advantage is in that the servomotor can be actuated by utilizing only a single line which does not have to be loaded more heavily than each of the two single lines typical for prior art arrangements.
436156
Gowling Lafleur Henderson Llp
Sulzer Brothers Limited
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