F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/38
F16K 31/40 (2006.01) F15B 13/01 (2006.01)
Patent
CA 1286189
LOW LEAKAGE ORIFICE-CONTROLLED POPPET VALVE Abstract of the Disclosure An orifice controlled poppet valve includes a pilot poppet pressure balancing arrangement which prevents fluid leakage between the valve inlet and outlet. The pressure balancing arrangement includes a pin slidable in a passage in the main valve member, which passage extends between the inlet and a pilot outlet passage. One end of the pin engages a stem which projects from from the pilot poppet. The other end of the pin engages a flexible diaphram which forms a seal between the valve inlet and the passage which receives the pin. An inlet pilot passage includes an annular clearance upstream of an orifice. The radial dimension of the annular clearance is smaller than the diameter of the orifice.
528976
Kramer Kenneth D.
Olson Rohn L.
Borden Ladner Gervais Llp
Deere & Company
Kramer Kenneth D.
Olson Rohn L.
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