F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
137/82, 137/94
F15B 13/00 (2006.01)
Patent
CA 1130169
FLUID SUPPLY SYSTEM Abstract of the D closure A fluid supply system includes a pump body having a main bore connectible through inlet check valves to draw secondary fluid from a first fluid reservoir and through outlet check valves to supply it to a secondary fluid function upon recipro- cation of a free piston in the main bore. The free piston in- cludes a pair of coaxial driving pistons on either side which extend into main passages which are alternately connected to a pressurized primary fluid source to cause reciprocation of the free piston. A first spool valve which responds to the comple- tion of a free piston stroke activates a second spool valve which changes the primary fluid source connections to the driving pistons.
337346
Borden Ladner Gervais Llp
Deere & Company
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