Machine element or mechanism – Gearing – In series plural interchangeably locked nonplanetary units
Reexamination Certificate
2007-03-02
2010-06-08
Estremsky, Sherry L (Department: 3655)
Machine element or mechanism
Gearing
In series plural interchangeably locked nonplanetary units
C074S331000
Reexamination Certificate
active
07730807
ABSTRACT:
A transmission for a tractor has a forward/reverse transmission unit for selectively changing a rotational direction of power of a first shaft connected with an engine and transmitting the power to a second shaft connected with an axle shaft, a main transmission unit installed between the second shaft and the axle shaft and having a plurality of gears to speed-change the power transmitted from the second shaft in four-speed, and a sub-transmission unit installed between the main transmission unit and the axle shaft and having a plurality of gears to speed-change again the power transmitted from the main transmission unit in four-speed. The transmission realizes forward/reverse 16-speed while having a compact structure.
REFERENCES:
patent: 2002/0026853 (2002-03-01), Matsufuji et al.
Choi Chul-hwan
Kim Hyo-jung
Kim Hyung-tai
Kim Jung-min
Bishop Erin D
Estremsky Sherry L
LS Mtron Ltd
McDermott Will & Emery LLP
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