Presses – Reciprocating press construction – Box and piston type
Patent
1993-02-02
1994-06-28
Gerrity, Stephen F.
Presses
Reciprocating press construction
Box and piston type
100269R, 100902, B30B 132
Patent
active
053236980
ABSTRACT:
A press for compressing drums of contaminated waste. The press comprises a frame made up of a table and a crosshead connected to the table by means of vertical supports, and a compression assembly including a main cylinder secured to the crosshead. A main piston is situated inside the main cylinder and delimits a main chamber between the piston and the cylinder head of the main cylinder. The main piston is extended by a depending ram rod. A skirt is designed to surround the drum when it is being compressed by the ram. The skirt is extended at its top by a tubular piston slidably received in the main cylinder between the main cylinder and the ram rod. An intermediate chamber is delimited between the tubular piston and the main piston. An annular chamber is delimited between the tubular piston and the bottom of the main cylinder. The main chamber and the annular chamber have ducts fed with a control fluid, and the intermediate chamber has a sealed sliding device for enabling the intermediate chamber to be fed with the control fluid.
REFERENCES:
patent: 2327117 (1943-08-01), Lorant
patent: 4610199 (1986-09-01), Pols
patent: 4685391 (1987-08-01), Picker
ACB
Gerrity Stephen F.
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