Planetary gear transmission systems or components – Electric or magnetic drive or control – Differential drive or control
Reexamination Certificate
2005-10-26
2008-08-05
Estremsky, Sherry (Department: 3681)
Planetary gear transmission systems or components
Electric or magnetic drive or control
Differential drive or control
C475S221000, C475S222000
Reexamination Certificate
active
07407458
ABSTRACT:
A four wheel drive articulated mine loader is powered by a fuel cell and propelled by a single electric motor. The drivetrain has the first axle, second axle, and motor arranged in series on the work machine chassis. Torque is carried from the electric motor to the back differential via a pinion meshed with the ring gear of the back differential. A second pinion oriented in an opposite direction away from the ring gear is coupled to a drive shaft to transfer torque from the ring gear to the differential of the front axle. Thus, the ring gear of the back differential acts both to receive torque from the motor and to transfer torque to the forward axle. The in-line drive configuration includes a single electric motor and a single reduction gear to power the four wheel drive mine loader.
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A Dependable LHD Designed Specifically For Load-Haul-Dump Applications Underground Elphinstone R1700 Series II, 1995, pp. 1-7, Caterpillar Elphinstone Pty.Ltd. Burnie, Tasmania, Australia.
Caterpillar Inc.
Estremsky Sherry
Liell & McNeil
Young Edwin A
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