Rotary expansible chamber devices – With changeable working chamber magnitude – Rotating inner working or reacting member repositioned...
Patent
1974-07-03
1976-06-29
Freeh, William L.
Rotary expansible chamber devices
With changeable working chamber magnitude
Rotating inner working or reacting member repositioned...
418 61R, 417218, F01C 2100
Patent
active
039663655
ABSTRACT:
A hydraulic power transmission and braking system for vehicles in which individual hydraulic wheel motors are connected through suitable control apparatus to a variable displacement hydraulic pump which is driven by an appropriate power source. The displacement of the pump varies automatically in response to hydraulic fluid pressure and flow rate requirements imposed by the vehicle operating conditions. The power transmission control apparatus automatically switches from the 4-wheel drive mode to the 2-wheel drive mode as the vehicle accelerates past a predetermined speed. The braking control system proportions the braking force applied to each of the hydraulic wheel motors in accordance with the load imposed on that wheel by the vehicle operating conditions.
REFERENCES:
patent: 1961592 (1934-06-01), Muller
patent: 1969651 (1934-08-01), Kretschmer
patent: 2453271 (1948-11-01), Sales
patent: 2629331 (1953-02-01), Kerr
patent: 3567349 (1971-03-01), Muelendyk
patent: 3700362 (1972-10-01), Verge et al.
patent: R19349 (1934-10-01), Muller
Freeh William L.
LaPointe A. P.
Tex Trans Inc.
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