Electro-proportional pressure control apparatus

Details Electro-proportional pressure control apparatus Electro-proportional pressure control apparatus

1976-09-10

1977-10-25

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

Plural series units

137 85, G05B 605, G05D 1600

Patent

active

040551970

ABSTRACT:
The invention contemplates improved hydraulic-pressure control apparatus which will proportionally reflect input-signal changes governing a wide range of output pressures. Use of a separate preamplifier stage, between a signal-pressure stage and a power stage, enables the signal pressure to remain essentially unaffected by load reaction or other transients at the power stage. In the forms described, an input electrical signal determines a step-function program of signal-pressure levels, and the power stage includes a relief valve which so diverts system-line flow to a sump as to assure quick and accurate response of system-line pressure to the instantaneous input electrical-signal level, all without system-pressure overshoot.

REFERENCES:
patent: 2638911 (1953-05-01), Griswold
patent: 3683949 (1972-08-01), Perkins
patent: 3702621 (1972-11-01), Mohri

Affiliated with

Also associated with

Rating

Electro-proportional pressure control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electro-proportional pressure control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-proportional pressure control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-118970