F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/55
F15B 9/00 (2006.01) E02F 9/22 (2006.01)
Patent
CA 1204042
ABSTRACT OF THE DISCLOSURE A remote driving system for use on a material handling vehicle having a rotatable upper structure including means for driving said material handling vehicle through powershift transmission. A hydraulic power supply is provided on the upper structure and the output of which is controlled by an operator in the excavator cab to be supplied to the hydraulic motor supported on the main chassis. The hydraulic motor is connected to provide power input to the automatic transmission for forward or reverse driving of the vehicle. Means are provided for selecting the gear ratio set in the powershift transmission from the excavator cab. Hydraulic motor drives a pump which provides pressurized automatic transmission fluid for lubricating the powershift transmission and provides power for operating selected clutches in the powershift transmission. An accumulator provides pressurized hydraulic fluid when remote driving of the vehicle is initiated for smooth engagement of the selected clutches in transmission.
460793
Donahue John M.
Gagner Michael J.
Borden Ladner Gervais Llp
Gradall Company (the)
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