Hydraulic circuit

Details Hydraulic circuit Hydraulic circuit

2008-03-18

2008-03-18

Wright, Dirk (Department: 3681)

192 clutches and power-stop control

Clutch and brake

Automatic check and release

Reexamination Certificate

active

07344009

ABSTRACT:
In a hydraulic circuit for controlling a clutch/brake system having a clutch that is disposed separately from the brake in a main drive of a mechanical press, wherein the brake is spring-loaded in a direction opposite to an engagement direction of the clutch, a piston/cylinder unit is provided that moves the clutch and the brake into a coupling position or a braking position, respectively. A pressure line connects a press safety valve to the piston/cylinder unit for generating torque at the clutch. A bidirectionally passable hydraulic connection connects a metering piston unit to the piston/cylinder unit in parallel to the press safety valve.

REFERENCES:
patent: 3415161 (1968-12-01), Mindrum
patent: 6540054 (2003-04-01), Evers et al.
patent: 10 53 255 (1959-03-01), None
patent: 1 533 776 (1970-01-01), None
patent: 1 160 451 (1969-08-01), None
patent: 137877 (1969-01-01), None

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