Hydraulic roll protection system

Details Hydraulic roll protection system Hydraulic roll protection system

1983-12-09

1985-04-30

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

With safety feature

Means to alter operation due to presence of foreign matter...

425194, 425367, 384256, B29C 1500, B30B 304

Patent

active

045141614

ABSTRACT:
A hydraulic roll protection system in which positioning of an adjustable roll relative to a fixed roll is caused by adjusting screws acting on movable journal boxes through a pressurized piston cylinder device. A relief valve between a hand pump and the cylinder acts to relieve excessive pressures. A switch valve connects the hand pump alternately to advance the roll journal to normal gap positions and to retract the roll from the fixed roll.

REFERENCES:
patent: 2575590 (1951-11-01), Goulding
patent: 2678465 (1984-05-01), Schnuck et al.
patent: 2785021 (1957-03-01), Whittum
patent: 3115672 (1963-12-01), Seanor
patent: 3389588 (1968-06-01), Reinhardt et al.
patent: 3555596 (1971-01-01), Thieme
patent: 3936258 (1976-02-01), Lake
patent: 4015919 (1977-04-01), Pawelczyk
patent: 4260578 (1981-04-01), Moody

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