Control apparatus of steering clutch for tractor

Details Control apparatus of steering clutch for tractor Control apparatus of steering clutch for tractor

1975-11-18

1977-06-14

Wyche, Benjamin W.

192 clutches and power-stop control

Elements

Thrust members, retarders, and stops

192 8713, 13762569, F16D 2510

Patent

active

040291880

ABSTRACT:
A control apparatus of a steering clutch for a tractor with distinctive features including a pair of yokes which release and control, under pressure, the lefthand and righthand steering clutches and which are connected with a pair of operating pistons respectively, with individual pressure receiving chambers of the said individual operating pistons being connected with a liquid pressure source, respectively by way of a control valve, and a pair of spools controlling the supply of the liquid delivered from the liquid pressure source to one of the pressure receiving chambers by the control valve in response to the action of the lefthand and righthand steering clutch control units so constructed as to have a progressive working valve increasing progressively the pressure of the said liquid supplying unit in response to the degree of control of the steering clutch control unit.

REFERENCES:
patent: 2773578 (1956-12-01), Burnett
patent: 2952347 (1960-09-01), Richardson
patent: 3374846 (1968-03-01), Massone
patent: 3437187 (1969-04-01), Umeda et al.
patent: 3823801 (1974-07-01), Arnold
patent: 3922997 (1975-12-01), Jameson

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