Motor vehicles – Steering by driving – Independently operable drive motors
Reexamination Certificate
2007-09-18
2007-09-18
Hurley, Kevin (Department: 3611)
Motor vehicles
Steering by driving
Independently operable drive motors
Reexamination Certificate
active
11082794
ABSTRACT:
A working vehicle having a pair of left and right HSTs having hydraulic pumps, hydraulic motors and trunnion shafts for regulating the drive speed of the hydraulic motors by varying compressed oil from the hydraulic pumps into the hydraulic motors, in which one hydraulic pump is disposed parallel to the other hydraulic pump in the forward or rearward direction, including drive wheels driven by the HSTs, respectively, a pair of relay shafts between a pair of steering levers for independently operating the trunnion shafts and a pair of trunnion shafts, first connection members for connecting the steering lever and the relay shaft to each other, and second connection members for connecting the relay shaft and the trunnion shaft to each other, and first connection members for connecting the steering lever to the relay shaft to each other, and second connection members for connecting the relay shaft and the trunnion shaft.
REFERENCES:
patent: 6003401 (1999-12-01), Smith
patent: 6390225 (2002-05-01), Velke et al.
patent: 6578656 (2003-06-01), Samejima et al.
patent: 7131268 (2006-11-01), Ohashi et al.
patent: 2002/0026779 (2002-03-01), Velke et al.
patent: 2005/0044836 (2005-03-01), Goto et al.
patent: 2000-71790 (2000-03-01), None
patent: 2000-270652 (2000-10-01), None
English language Abstract of JP 2000-71790.
English language Abstract of JP 2000-270652.
Goto Renshi
Okamoto Suguru
Yoshiki Shinya
Greenblum & Bernstein P.L.C.
Hurley Kevin
Iseki & Co. Ltd.
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