Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to close mold
Reexamination Certificate
2005-10-11
2005-10-11
Mackey, James P. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to close mold
C425S451200
Reexamination Certificate
active
06953334
ABSTRACT:
A closing device for a mold closing unit includes: at least one hydraulic pressure cylinder unit for generating a mold closing pressure on an injection mold which is accommodated in a mold clamping chamber; a pressure piston disposed in the pressure cylinder unit, a piston rod of the pressure piston is disposed along a central axis of the pressure cylinder unit, and the pressure piston separates a high-pressure chamber of the pressure cylinder unit from a low-pressure chamber thereof; an hydraulic driver cylinder, associated with the pressure cylinder unit, for closing the injection mold assembly, which drive cylinder is disposed concentrically relative to the central axis, and an actual cylinder of the drive cylinder is formed by the pressure piston of the pressure cylinder unit; and an hydraulic compensating cylinder, associated with the pressure cylinder unit, for receiving or respectively dispensing hydraulic medium, which comes from the pressure cylinder unit or respectively is to be dispensed to said pressure cylinder unit, and including a compensating cylinder chamber being in open communication with the low-pressure chamber of the pressure cylinder unit, wherein the compensating cylinder is likewise disposed concentrically relative to the central axis.
REFERENCES:
patent: 4380427 (1983-04-01), Hehl
patent: 4846664 (1989-07-01), Hehl
patent: 4861259 (1989-08-01), Takada
patent: 4865537 (1989-09-01), Shima
patent: 4981426 (1991-01-01), Aoki
patent: 5052910 (1991-10-01), Hehl
patent: 5129806 (1992-07-01), Hehl
patent: 3644181 (1988-04-01), None
patent: 3844432 (1990-01-01), None
patent: 4018334 (1991-11-01), None
patent: 19809666 (1999-09-01), None
patent: 19820934 (1999-11-01), None
patent: 0281329 (1988-09-01), None
patent: 0281330 (1988-09-01), None
patent: 0342235 (1989-11-01), None
patent: 1182456 (1970-02-01), None
Cantor & Colburn LLP
Mackey James P.
LandOfFree
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