Power plants – Pressure fluid source and motor – Condition responsive control of or by input to input pump...
Patent
1975-10-20
1976-10-19
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Condition responsive control of or by input to input pump...
60444, 60447, 60449, 60468, 60490, F16H 3946
Patent
active
039863581
ABSTRACT:
A hydrostatic vehicle transmission with a primary and/or secondary part adjustable as to its delivery and its absorption capacity respectively. The hydraulic adjusting elements of said primary and/or secondary part are automatically by spring force adjusted in the direction toward their starting position and are connected to a control circuit which is adapted to be connected to the pressure conduit of a constant delivery pump and is also adapted for controlling the control pressure to be connected to a return line by means of a control member. An adjustable orifice of a limit load control is arranged in the pressure line, which orifice is arranged ahead of the connection of the control member when looking in flow direction. The adjusting member of said limit load control may for instance be connected to the gas pedal or manually operable gas lever of an internal combustion engine for instance a Diesel engine while the hydrostatic vehicle transmission also serves as vehicle brake. The brake pedal of the vehicle is operatively connected to a control member which is operable to control the control pressure in the flow direction ahead of the limit load control. This connection is such that in response to the actuation of the brake pedal, the control pressure will be reduced.
REFERENCES:
patent: 3167907 (1965-02-01), Kempson
patent: 3214911 (1965-11-01), Kempson
patent: 3477225 (1969-11-01), Cryder et al.
patent: 3533234 (1970-10-01), Futamata et al.
Becker Walter
Geoghegan Edgar W.
Klockner-Humboldt-Deutz Aktiengesellschaft
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