192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Patent
1982-08-25
1986-07-22
Bonck, Rodney H.
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
192 331, 192 333, 474 28, F16D 3300, F16H 702
Patent
active
046013687
ABSTRACT:
A transmission, in particular for a motor vehicle, includes an infinitely variable V-belt transmission with a primary pulley having a primary shaft and a secondary pulley, each having two conical sheaves, a primary and a secondary hydraulic operating cylinder, respectively, for the axial displacement of at least one of the conical sheaves of each pulley, a hydraulic control valve for the control of the transmission ratio, the valve having a housing and an internal valve spool that can be displaced from an end position in which the valve spool rests against a stop and the valve housing having ports openable for the discharge of fluid from the primary operating cylinder and/or the supply of fluid to the secondary operating cylinder, to a center position where ports are substantially closed, so that virtually no supply of fluid to and discharge of fluid from at least one of the operating cylinders can take place, a hydrodynamic transmission unit having a rotary output member connected to said primary shaft and a rotary input member adapted to be driven by a power source, a lock-up device for locking the input and output members together and a lock-up control device responsive to the position of the valve spool between the end position and the center position.
REFERENCES:
patent: 2351483 (1944-06-01), Carnagua
patent: 2707887 (1955-05-01), Slack
patent: 3058373 (1962-10-01), Snoy et al.
patent: 3126988 (1964-03-01), Memmer
patent: 3810531 (1974-05-01), Edmunds
patent: 4152947 (1979-05-01), Van Deursen
patent: 4274520 (1981-06-01), Van der Hardt Aberson
patent: 4400164 (1983-08-01), Cadee
patent: 4457410 (1984-07-01), Suga et al.
Bonck Rodney H.
Towner Alan G.
VAN Doorne's Transmissie B.V.
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