F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 13/06 (2006.01) F15B 13/04 (2006.01) F15B 13/042 (2006.01)
Patent
CA 2150413
Material such as trash or refuse is packed in a container by opposed hydraulic packing and ejecting cylinders. Each cylinder is controlled by a hydraulic control valve with the control valve controlling the ejecting cylin- der being, in effect, operated by the control valve for the packing cylinder. This is accomplished by sensing the pressure applied to the packing cylin- der and when the pressure reaches a predetermined level, a pilot dump valve, in the ejecting cylinder is opened to allow the piston in the ejecting cylinder to retreat. When the pilot pressure drops below the predetermined level, the pilot dump valve closes, allowing the packing cylinder to exert additional packing force. In this way the piston in the ejecting cylinder inches back and the material is intermittently packed. An anti-cavitation check is provided so as to fill the chamber of the ejecting cylinder as the piston retracts.
Rost Alvin Stanley
Shinler Kevin Leroy
Dana Corporation
Ridout & Maybee Llp
LandOfFree
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