Fluid handling – Systems – With pump
Patent
1989-01-09
1989-10-31
Rivell, John
Fluid handling
Systems
With pump
138 30, 138 40, 60413, F16L 5504
Patent
active
048770558
ABSTRACT:
The invention relates to a leakage device for the depletion of a diaphragm accumulator when the vehicle so equipped is not in use. This device determines a permanent leakage of the liquid to a low-pressure reservoir with a predetermined rate of flow. According to the embodiment of the invention shown in the attached drawing, the device comprises a rod (150) mounted in the plunger (110), and the leakage path is defined between the rod (150) and a narrowed zone (131) of an axial passage (132) located inside the plunger. Preferably, the plunger (110) comprises a bore (126) and passages (127, 134) in communication with the inlet port (104) and the outlet port (106), and a core (130) received in the bore (126), the axial passage (132) being formed in the core (130), and the rod (150) being mounted in the core (130). The invention is used for the braking of motor vehicles.
REFERENCES:
patent: 3346014 (1967-10-01), Jacuzzi
patent: 3718158 (1973-02-01), Schon
patent: 4463818 (1984-08-01), Sonneborn
patent: 4706930 (1987-11-01), Lexen
HYDRAULICS & PNEUMATICS, No. 7, Jul. 1980, pp. 22 and 23, Mini-Contest Winners: Log Splitter Accumulator Unloading.
Knuchel Pierre
Nollez Jacques
Bendix France
Decker Ken C.
Palguta Larry J.
Rivell John
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