Electric declutch mechanism for direct drive crawler

Details Electric declutch mechanism for direct drive crawler Electric declutch mechanism for direct drive crawler

1990-05-22

1991-09-17

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0096, 192 358, 192 85R, 74869, 475123, F16D 2500

Patent

active

050486551

ABSTRACT:
The invention comprises mechanism for reducing hydraulic pressure on the engaged forward or reverse clutch when the decelerator pedal is fully depressed. The mechanism comprises an electric switch that is coupled to the decelerator pedal linkage for energizing a solenoid valve. The solenoid valve couples the modulation accumulator of the power shift tranmission to sump when the electric switch is closed. This decreases the hydraulic pressure on the engaged forward or reverse clutch so that it can slip if braking force is applied to the vehicle.

REFERENCES:
patent: 4618043 (1986-10-01), Hattori et al.
patent: 4768636 (1988-09-01), Ito et al.
patent: 4827805 (1989-05-01), Moan
patent: 4941372 (1990-07-01), Aoki et al.
patent: 4957015 (1990-09-01), Ishikawa et al.
patent: 4957016 (1990-09-01), Amedei et al.
patent: 4966050 (1990-10-01), Schulz et al.
patent: 4972739 (1990-11-01), Ueki et al.

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