F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 13/042 (2006.01) F04B 17/00 (2006.01) F04B 49/02 (2006.01) F04B 49/08 (2006.01) F15B 11/028 (2006.01) F15B 11/072 (2006.01) F15B 15/00 (2006.01)
Patent
CA 2342069
The invention provides an improved fluid motor powered lift system having a valve arrangement for reducing or interrupting the fluid flow supplied to the motor when the pressure in the lift system exceeds a predetermined pressure. A valve arrangement is provided to shut-off or throttle back the fluid supplied to the fluid motor when the fluid pressure in the lift reaches a predetermined level. When the pressure in the lift system exceeds the predetermined level, pilot pressure is supplied to an automatic shut-off valve, and this in turn reduces fluid flow to fluid air motor thereby reducing or preventing pump pressure.
Inc. Templeton Kenly & Co.
Macrae & Co.
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