Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to cause relative movement between mold and charger
Reexamination Certificate
2007-12-18
2007-12-18
Davis, Robert (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to cause relative movement between mold and charger
C425S556000, C426S512000, C426S513000
Reexamination Certificate
active
10942738
ABSTRACT:
An improved hydraulic system is provided for a reciprocating mold plate, patty-forming apparatus wherein food product is delivered under pressure from a pump cylinder to mold plate cavities. The plunger is driven during a first phase by force from a hydraulic cylinder from a retracted position distant from the pump cylinder to a ready position initially compressing food product loaded into said pump cylinder. Thereafter, the plunger is driven during a second phase by the hydraulic cylinder to load food product under pressure into the mold plate cavities. The hydraulic cylinder is supplied with hydraulic fluid during the first phase by a low pressure hydraulic fluid pump and during the second phase by a high pressure hydraulic fluid pump. According to the invention, the low pressure hydraulic fluid pump and the high pressure hydraulic fluid pump are positioned within a reservoir, at least partially submerged in hydraulic fluid held within the reservoir, during operation. The low pressure hydraulic fluid pump and the high pressure hydraulic fluid pump are connected in series to the drive shaft of an electric motor located outside the reservoir.
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Hancock David
Lindee Scott A.
Pasek James E.
Davis Robert
Ewald Maria Veronica
Formax, Inc.
The Law Office of Randall T. Erickson, P.C.
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