Hydraulic assistance device

Details Hydraulic assistance device Hydraulic assistance device

1985-02-15

1986-11-18

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60566, B60T 1320

Patent

active

046228144

ABSTRACT:
Hydraulic assistance device of the mixed hydrodynamic/hydrostatic type incorporating a body (10) in which a first piston (18) is slideably mounted and moveable between a first position allowing the communication of a first chamber (53), joined to a braking circuit, to a reservoir (12), and isolating this chamber (53) from a source of high pressure fluid (86), and a second position isolating the chamber (53) from the reservoir (12) and connecting it with the source (86); a second chamber (30) in the body (10) connected by a passage (90) to the brakes (66), and valve mechanism (92) normally closing the passage (90) and sensitive to the pressure in the chamber (30) so that, when the latter pressure reaches a value which is greater than that existing in the first chamber (53), the valve mechanism (92) opens allowing fluid to flow between the second chamber (30) and the brakes (66).

REFERENCES:
patent: 3157986 (1964-11-01), Gordon
patent: 4126996 (1978-11-01), Leiber
patent: 4442671 (1984-04-01), Reynolds
patent: 4449369 (1984-05-01), Dauvergne
patent: 4474004 (1984-10-01), Thomas

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