Control system for a modular transmission

Details Control system for a modular transmission Control system for a modular transmission

1975-08-21

1977-08-16

Scott, Samuel

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

F16H 374

Patent

active

040418073

ABSTRACT:
A control system for a power transmission includes a plurality of sequentially arranged speed ratio modules each having friction means responsive to a single signal for establishing either direct or reduction drive across the respective module, the control system including separate valves for selectively communicating the single signal to each respective module in response to governor means coupled with an output drive component of the transmission. A preferred embodiment of the control system is adapted for use in a power transmission where the speed ratio modules are of similar construction, each having a fixed housing forming a portion of an enclosure for the entire transmission, the valve means operated by the governor comprising a plurality of axially aligned abutting spools movable in unison by the governor and adapted to communicate the actuating signal to each respective module.

REFERENCES:
patent: 2703500 (1955-03-01), Roche
patent: 3452621 (1969-07-01), Golan et al.
patent: 3707989 (1973-01-01), Davin
patent: 3708047 (1973-01-01), Frei et al.

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