Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1984-11-30
1987-04-14
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
474 12, B60K 4114, F16H 1106
Patent
active
046568921
ABSTRACT:
A control system for an infinitely variable belt-drive transmission for an engine comprises a primary pulley having a hydraulically shiftable disc, a secondary pulley having a hydraulically shiftable disc, a belt engaged with both pulleys, and a hydraulic circuit having a pump for supplying oil. A transmission ratio control valve is provided to be responsive to engine speed for controlling the oil and for shifting the disc of the primary pulley to change the transmission ratio, and a pressure regulator valve is provided to respond to the transmission ratio for controlling the line pressure in the hydraulic circuit. A piston is slidably mounted in the hydraulic cylinder of the primary pulley and a hydraulic circuit operated valve having a solenoid is provided to apply the line pressure to the hydraulic cylinder by the operation of the solenoid operated valve to shift the piston so as to restrict shifting of the disc of the primary pulley to the maximum transmission ratio position.
REFERENCES:
patent: 3762231 (1973-10-01), Pettigrew
patent: 4152947 (1979-05-01), van Deursen et al.
patent: 4387608 (1983-06-01), Mohl et al.
patent: 4400164 (1983-08-01), Cadee
patent: 4462277 (1984-07-01), Miki et al.
Belisario Martin G.
Braun Leslie
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
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