Transmission control systems

Details Transmission control systems Transmission control systems

2005-02-01

2005-02-01

Fleming, Faye M. (Department: 3616)

Motor vehicles

Transmission mechanism

Variable speed or direction

Reexamination Certificate

active

06848532

ABSTRACT:
A transmission control system, such as for a self-propelled, walk-behind lawn mower, is provided for controlling first and second hydrostatic transmissions in which each one of the transmissions has a hydraulic dump actuator and a brake actuator. The transmission control system includes a control lever and a linkage. The linkage is engaged with the control lever, the hydraulic dump actuators, and the brake actuators of the first and second hydrostatic transmissions. The control lever and the linkage have a drive position which place both of the hydraulic dump actuators in a drive mode, a neutral position which place both of the hydraulic dump actuators in a neutral mode, and a brake position which place both of the brake actuators in a brake mode. The transmission control system can have a shift slot pattern which defines the drive, neutral, and brake positions of the control lever.

REFERENCES:
patent: 5127215 (1992-07-01), Wenzel
patent: 5848520 (1998-12-01), Arfstrom et al.
patent: 6454032 (2002-09-01), Teal et al.
patent: 6540633 (2003-04-01), Hasegawa et al.

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