F - Mech Eng,Light,Heat,Weapons – 15 – C
Patent
F - Mech Eng,Light,Heat,Weapons
15
C
F15C 3/00 (2006.01) F15C 3/02 (2006.01) F16K 51/00 (2006.01) E21B 43/18 (2006.01)
Patent
CA 2640797
A control system for a reciprocating device which includes a switching valve for directing fluid supply under pressure to one of two drive lines in an alternating manner, means for alternating the switching valve, and an exhaust circuit including and exhaust outlet, a first flow restrictor disposed between one drive line and the exhaust outlet, and a second flow restrictor disposed between the other drive line and the exhaust outlet. The system may include a selection valve for alternately connecting one of two drivelines to the exhaust outlet.
Bennett Jones Llp
Plainsman Mfg. Inc.
LandOfFree
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