Fluid-pressure and analogous brake systems – Load control – Responsive to fluid pressure spring
Patent
1990-04-16
1991-07-02
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Load control
Responsive to fluid pressure spring
188195, 303 969, B60T 830
Patent
active
050280945
ABSTRACT:
The brake regulator controlled by the load of a vehicle uses a fluidic mechanism which acts on a first piston (7) capable of translatory movement in a bore formed in the body (1) of the regulator, the first piston (7) being provided with a push rod (33) capable of cooperating with one end of a second piston (21) forming part of a valve which is open in the rest position. Mechanisms (31,37) are provided for maintaining, at rest, a given distance between the end of the second piston (21) and the push rod (33), the given distance being such that the end of the second piston (21) and the push rod (33) do not come into contact until just before the closure of the valve. Preferably, the push rod (33) is, at rest, in axial abutment against a stationary part (31) of the body (1), the second piston (21) being returned to rest by a spring (41).
REFERENCES:
patent: 3329471 (1967-07-01), Oberthur
patent: 3503657 (1970-03-01), MacDuff
patent: 4615566 (1986-10-01), Perrin
patent: 4629257 (1986-12-01), Carre et al.
patent: 4773712 (1988-09-01), Maggioni et al.
patent: 4858999 (1989-08-01), Schonlau et al.
patent: 4925251 (1990-05-01), Picot et al.
Bendix Europe Services Techniques
Butler Douglas C.
Decker Ken C.
Palguta Larry J.
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