Presses – Reciprocating press construction – Box and piston type
Reexamination Certificate
2005-01-04
2005-01-04
Ostrager, Allen (Department: 3725)
Presses
Reciprocating press construction
Box and piston type
C100S09800R, C100S179000, C100S215000, C100S269180
Reexamination Certificate
active
06837158
ABSTRACT:
A frame (12) with a charging chamber (14) for receiving a load of waste material, a platen (20) that moves in the charging chamber to compact the material load, and one or more wheels (44) rotatably coupled to the platen. The charging chamber (14) has a floor (34), the platen (20) has a bottom (32) that slidably contacts the floor and supports enough of the weight of the platen on the floor that none or little of the material can pass under the platen, and the wheels (44) support a substantial portion of the weight of the platen on the floor to mitigate sliding friction. The wheels (44) are made of a resilient material and deform from an unloaded state to a loaded state when supporting the substantial portion of the weight of the platen (20).
REFERENCES:
patent: 1088435 (1914-02-01), Matthews
patent: 3828663 (1974-08-01), Poplinski
patent: 3937140 (1976-02-01), Swanson
patent: 4355575 (1982-10-01), Goldhammer
patent: 4497247 (1985-02-01), Goldhammer
patent: 4729304 (1988-03-01), Gardella et al.
patent: 4757758 (1988-07-01), Tondo
patent: 4841853 (1989-06-01), Wallace
patent: 5193453 (1993-03-01), Lundy
patent: 5351613 (1994-10-01), Newsom
patent: 5642662 (1997-07-01), Schwelling
patent: 5832815 (1998-11-01), Bollegraaf
Gardner & Groff, P.C.
Nguyen Jimmy T
Ostrager Allen
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