Measuring and testing – Blower – pump – and hydraulic equipment
Patent
1978-07-11
1980-01-01
Goldberg, Gerald
Measuring and testing
Blower, pump, and hydraulic equipment
G01M 1900
Patent
active
041810163
ABSTRACT:
A method and apparatus for simultaneous testing of one or more hydraulic control systems, each system having a hydraulic pressure pump whose high-pressure end is connected to a first tank in which a first piston element having a relatively small surface is movable and whose low-pressure end is connected to a second tank in which a second sealing element, which has a relatively large surface and is coupled with the first piston element, is movable in such a way that under normal working conditions a constant compression ratio is maintained in the system and each individual system includes at least one working unit between the high-pressure end and the low pressure end while, for use on a test unit with a pressure pump of its own, its high-pressure end is connected to the high-pressure end of each system to be tested and the low-pressure end is connected by way of a tank to the low-pressure end of each system to be tested, at least one pressure regulator for each system being inserted between the tank to the test system and the low-pressure end to be tested; and having pressure regulator in dependence of the position of the corresponding piston elements coupled with each other to maintain the compression ratio in each individual system, which is to be tested, at the value conforming to normal working conditions.
REFERENCES:
patent: 2478938 (1949-08-01), Osterhus
patent: 2612777 (1952-10-01), Greer
patent: 3230761 (1966-01-01), Sanders
Goldberg Gerald
Roskos Joseph W.
Sun Electric Corporation
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