Hydraulically controlled power transmission having friction plat

Details Hydraulically controlled power transmission having friction plat Hydraulically controlled power transmission having friction plat

1979-09-07

1982-04-27

Dorner, Kenneth

Machine element or mechanism

Gearing

In series plural interchangeably locked nonplanetary units

74752C, 74364, 74335, 251138, 13762515, F16H 3500, F16H 528

Patent

active

043264336

ABSTRACT:
A hydraulically controlled transmission for vehicles such as heavy-duty, high horsepower, off-highway trucks, the transmission having a plurality of selectively engagable change speed gears and hydraulically actuated friction type clutches for selectively engaging the gears to provide various speed ratios for the vehicle. The transmission includes a hydraulic control circuit in communication with the clutches and a rotary range selector valve is located in the circuit and driven in step-by-step increments by a geneva wheel drive means. The arrangement insures that the transmission can be shifted at only one speed range at a time and that an engaged speed range will be released before another speed range is engaged.

REFERENCES:
patent: 2088427 (1937-07-01), Maurer
patent: 2204919 (1940-06-01), Tyer
patent: 2360695 (1944-10-01), Linden et al.
patent: 2609706 (1952-09-01), Jandasek
patent: 2728242 (1955-12-01), De Vlieg
patent: 3151718 (1964-10-01), Temple

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