G - Physics – 05 – D
Patent
G - Physics
05
D
341/103
G05D 3/14 (2006.01) F16H 61/42 (2006.01)
Patent
CA 1129525
HYDROSTATIC TRANSMISSION CONTROL SYSTEM Abstract of the Disclosure The hydrostatic transmission control system includes a first and second two-position solenoid valve which function to alter the hydraulic fluid parameters as delivered to the servo control cylinders of a variable displacement pump associated with a hydrostatic transmission. Activation of the first solenoid valve instigates a varying of pump displacement. Once the desired pump displacement has been achieved, the second solenoid valve is activated to maintain the desired pump displacement. The deacti- vation of both solenoid valves results in the hydrostatic trans- mission seeking and maintaining a neutral mode.
355638
Borden Ladner Gervais Llp
Deere & Company
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