Metal deforming – By use of roller or roller-like tool-element – With carrier for roller-couple or tool-couple
Patent
1977-09-23
1978-10-03
Mehr, Milton S.
Metal deforming
By use of roller or roller-like tool-element
With carrier for roller-couple or tool-couple
137102, 13759618, 91433, B21B 3132
Patent
active
041177061
ABSTRACT:
A remotely adjustable back pressure relieving hydraulic regulator system particularly suitable for use on the work roll bending and balancing systems of a rolling mill. A normally open air operated valve and a normally closed air operated valve are modified and interconnected to provide the disclosed remotely adjustable pressure regulator. The normally closed valve is connected to a pressurized hydraulic supply. The normally closed regulating valve opens in response to a control air pressure signal applied thereto and is modified to close when the hydraulic pressure at its outlet port exceeds a desired or selected pressure. The pressure at the outlet of the pressure regulating valve required to move it to the closed position depends on the pressure of the applied air control signal. Thus, as the pressure of the air control varies, the hydraulic pressure required to close the valve also varies. The outlet of the pressure regulating valve is connected to a rolling mill and also to the inlet of a pressure relief valve.
REFERENCES:
patent: 3250105 (1966-05-01), Stone
patent: 3373591 (1968-03-01), O'Brien et al.
patent: 3477465 (1969-11-01), Town
Jones & Laughlin Steel Corporation
Mehr Milton S.
Yeager Robert D.
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