Steerable primary axle

Motor vehicles – Having at least one wheel both driven and steerable – Steerable wheel has exclusive axis of pivot

Reexamination Certificate

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Details

C180S308000

Reexamination Certificate

active

10996259

ABSTRACT:
A steerable primary axle for a fairway mower or other machine includes a pair of motors mounted in fixed positions on opposing ends of an axle. The mechanical drive system includes a pair of input shafts having input bevel gears, a pair of output shafts with output bevel gears and wheel mounts, and a pair of intermediate shafts between the input shafts and output shafts. Each intermediate shaft has an upper bevel gear meshed with the input bevel gear and a lower bevel gear meshed with the output bevel gear. The output shafts may be enclosed within pivotable housings. A pair of drag links are attached to the pivotable housings and to a steering linkage. The wheels on the wheel mounts may be steered without moving the motors, reducing or minimizing strain on hydraulic hoses or electric cables on the steered wheels.

REFERENCES:
patent: 1130285 (1915-03-01), Honnold
patent: 1289851 (1918-12-01), Marling
patent: 3469648 (1969-09-01), Cannon
patent: 4576394 (1986-03-01), Van der Lely
patent: 5148885 (1992-09-01), Weyer
patent: 5203169 (1993-04-01), Ishii et al.
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patent: 6302233 (2001-10-01), Okamuro et al.
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patent: 6336513 (2002-01-01), Hasegawa et al.
patent: 6571894 (2003-06-01), Ishimaru et al.
patent: 6637535 (2003-10-01), Nemoto
patent: 6745864 (2004-06-01), Abend et al.
patent: 6755264 (2004-06-01), Hasegawa et al.
patent: 2004/0124019 (2004-07-01), Harrup et al.
patent: 0047942 (1982-03-01), None

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