Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1989-03-08
1991-05-07
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60464, 60468, 60483, 60494, F16D 3102
Patent
active
050126440
ABSTRACT:
An automatic speed changing apparatus, employable for a motorcar, which includes a hydraulic pump on the driving side mounted on a driving shaft, a plurality of hydraulic motors on the driven side mounted on a driven shaft, a distributor including a cylinder and a piston slidably received in the cylinder, a hydraulic oil collecting pipe having a large diameter in which working hydraulic oil is stored for the hydraulic pump and motors on both the driving and driven sides, an idling lever pivotally supported in the cylinder to be operable during a period of idling and a piston lever for displacing the piston axially in the cylinder during normal operation and during a period of engine braking. A plurality of distributor ports are formed in the cylinder in equally spaced relationship in the axial direction, one of the distributor ports located nearest to the head section of the cylinder communicating with the outlet port of the hydraulic pump and the other distributor ports communicating with the inlet ports of the hydraulic motors, whereby pressurized hydraulic oil from the hydraulic pump is transmitted to the hydraulic motors via the distributor ports in the cylinder. During a period of idling, the piston is displaceable in the forward position, and during a period of engine braking it is displaceable in the rearward direction.
REFERENCES:
patent: 2370526 (1945-02-01), Doran
patent: 2374588 (1945-04-01), Doran
patent: 2500627 (1950-03-01), Chinn
patent: 2616259 (1952-11-01), Quintilian
patent: 3762164 (1973-10-01), Bessette
patent: 3958419 (1976-05-01), Laing
patent: 4579044 (1986-04-01), Johnson
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