System for controlling the transmission ratio in an infinitely v

Details System for controlling the transmission ratio in an infinitely v System for controlling the transmission ratio in an infinitely v

1985-01-23

1987-07-21

Staab, Lawrence

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74689, 474 28, B60K 4116

Patent

active

046809910

ABSTRACT:
A 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. A transmission ratio control valve having a spool 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. Pitot pressure dependent on the engine speed is applied to the spool to shift it against a spring, the force of which is determined by the depression of an accelerator pedal. An actuator is proviced to increase the load on the spring to downshift the transmission. A manual select device is provided to opeate the actuator for downshifting.

REFERENCES:
patent: 3893344 (1975-07-01), Dantlgraber et al.
patent: 4094203 (1978-06-01), van Deursen et al.
patent: 4161894 (1979-07-01), Giacosa
patent: 4369675 (1983-01-01), van Deursen
patent: 4400164 (1983-08-01), Cadee
patent: 4467674 (1984-08-01), van Deursen et al.
patent: 4478105 (1984-10-01), Yamamuro et al.
patent: 4515041 (1985-05-01), Frank et al.
patent: 4542665 (1985-09-01), Yamamuro et al.

Affiliated with

Also associated with

Rating

System for controlling the transmission ratio in an infinitely v does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for controlling the transmission ratio in an infinitely v, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for controlling the transmission ratio in an infinitely v will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-200824