Power plants – Pressure fluid source and motor – Pulsator
Patent
1985-04-17
1987-01-20
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
60566, 60556, B60T 1300
Patent
active
046372083
ABSTRACT:
Hydraulic assistance device incorporating a casing provided with a bore in which a first piston is mounted so as to slide, the piston being able to move under the effect of a brake pedal between a first position, isolating a first chamber which is joined to the brakes of the vehicle, from a source of high pressure fluid, and a second position, causing the first chamber to communicate with the high pressure source, the device also incorporating a second chamber formed in the casing, a passage joining the first and second chambers and a valve mechanism in the passage in such a way that the passage is normally closed, under the effect of the pressure in the second chamber, characterized in that the device incorporates a second passage, causing the second chamber to communicate with a low pressure reservoir, and a second valve mechanism in the passage, the valve mechanism being sensitive to the pressures in the first and second chambers in such a way that the passage normally remains closed during the operation of the device, while allowing fluid to pass from the second chamber to the reservoir when braking is released.
REFERENCES:
patent: 3514163 (1970-05-01), MacDuff
patent: 3729235 (1973-04-01), Bach
patent: 3729931 (1973-05-01), Shilton
patent: 3798905 (1974-03-01), Tennis
patent: 4285198 (1981-08-01), Budecker
patent: 4449369 (1984-05-01), Dauvergne
patent: 4455830 (1984-06-01), Gaiser
patent: 4455831 (1984-06-01), Machara
Decker Ken C.
Hershkovitz Abraham
Palguta Larry J.
Societe Anonyme D.B.A.
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