Hydraulic system for controlling motor vehicle lifts in general

Details Hydraulic system for controlling motor vehicle lifts in general Hydraulic system for controlling motor vehicle lifts in general

1986-05-29

1987-11-17

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60581, 91171, 91189R, 91515, F15B 700

Patent

active

047064587

ABSTRACT:
A hydraulic system for lifts provided with two independently supported parallel platforms comprises at least two cylinder-piston units (80, 81) for raising the platforms, a metering device (7) for feeding identical quantities of fluid to said two units, and a balancing device (74, 75) operated by means (31, 32) for measuring the height difference between the platforms and arranged to feed a quantity of supplementary fluid to that cylinder-piston unit (80) or (81) operating the lower platform by withdrawing it from that cylinder-piston unit (81) or (80) operating the higher platform.

REFERENCES:
patent: 3769881 (1973-11-01), Aoki
patent: 4161229 (1979-07-01), Mifsud
patent: 4192222 (1980-03-01), Dits
patent: 4241581 (1980-12-01), Chace

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