Presses – With drain means for expressed liquid – Drainage through or along pressure surface
Patent
1993-01-13
1995-01-03
Gerrity, Stephen F.
Presses
With drain means for expressed liquid
Drainage through or along pressure surface
100116, 100126, 100185, 100189, 100190, 100207, 100232, B30B 906
Patent
active
053775848
ABSTRACT:
A dejuicing press has a cylindrical main pressing chamber defined by a cylindrical dripping grate. A composite piston arrangement is used in the chamber which includes an internal piston surrounded by an external annular piston. Separate drives are provided for the two pistons so that they can be moved together or separately in the same direction or in opposite directions to effect the various stages of a pressing cycle. The press may also have a pre-pressing chamber which feeds the main pressing chamber and in which a pre-pressing piston operates, and a transfer chamber at one end of the pre-pressing chamber in which there is a third piston.
REFERENCES:
patent: 3089410 (1963-05-01), Stangl
patent: 3303946 (1967-02-01), Wilkins
patent: 3451185 (1969-06-01), Tezuka
patent: 3621775 (1971-11-01), Dedio et al.
patent: 3908538 (1975-09-01), Boyd
patent: 4158332 (1979-06-01), Melandri
patent: 4303412 (1981-12-01), Baikoff
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