Mechanism for synchronized shifting of a transmission using coup

Details Mechanism for synchronized shifting of a transmission using coup Mechanism for synchronized shifting of a transmission using coup

1987-12-07

1989-08-15

Diehl, Dwight G.

Machine element or mechanism

Gearing

In series plural interchangeably locked nonplanetary units

192 4A, 192 13A, F16H 302, F16D 6702

Patent

active

048563757

ABSTRACT:
A tractor transmission includes a pair of dual power clutches that connects an engine to an input shaft through a gearset that selectively makes a direct connection or overdrives the input shaft in accordance with the stat of the clutches. Two nonsynchronized couplers connect the input shaft in accordance with the movement of the gear shift lever by the vehicle operator to high speed and low speed forward gear ratios and to a reverse drive mechanism. Hydraulically actuated disk clutches located in the driveline between the couplers and the drive wheels are selectively operated to transmit power through a multiple speed ratio gearset. A friction clutch or torque converter transmits power from the power source to the input of the dual power clutches. A hydraulically-actuated brake holds a gear and countershaft, located between the couplers and the dual power clutches. A clutch pedal is depressed by the operator.

REFERENCES:
patent: 2550545 (1951-04-01), Findley
patent: 2993574 (1961-07-01), Gardner
patent: 3130827 (1964-04-01), Beeskow
patent: 3346081 (1967-10-01), Rowse
patent: 3590966 (1971-07-01), House
patent: 3645367 (1972-02-01), Coleman et al.
patent: 3834499 (1974-09-01), Candellero et al.
patent: 4024937 (1977-05-01), Hoepfl et al.
patent: 4318305 (1982-03-01), Wetrich et al.
patent: 4400988 (1983-08-01), Hagarty
patent: 4433762 (1984-02-01), Prokop et al.
patent: 4686869 (1987-08-01), Beim
U.S. Ser. No. 818,509 filed 1/13/86.
U.S. Ser. No. 818,510 filed 1/13/86.

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