Motor vehicles – Special driving device – Portable track
Patent
1997-02-18
1999-12-28
Hurley, Kevin
Motor vehicles
Special driving device
Portable track
180 925, 180 958, 305127, 305135, B62D 5504
Patent
active
060068477
ABSTRACT:
An endless track structure to replace the wheels of an all-terrain vehicle, that is adequately attached to the existing wheel hub by a removable mounting shaft. This provides a non-rigid frame that supports spaced apart synchronized driving cog wheels. This frame has mounted within its upper portion, two hexagon bore anti-friction bearings that slide onto a hexagon shaped thin wall sleeve, allowing the assembled track structure to be installed as a unit. There are spaced idler wheels in front and rear portions of the non rigid frame that support the track. They form a triangular configuration with raised front portion and flat rear portion. A non rigid frame provides interconnected resilient leaf spring supports located in the front and rear of the track.
An endless track maintains its appropriate configuration over the driving cog wheels by the front and rear idler wheels, and under the lower course by spaced apart slider rub bars supported by a flexible frame. An optional intermediate suspension may be substituted for the slider with a pair of spaced apart front and rear intermediate idler wheels at the frame portion.
The ability to adjust the position of the front and rear idler wheels in relation to the bearing support is accomplished by multiple mounting holes in the front and rear leaf spring. This allows the track to be lengthened to the front or rear, and still use the same length endless track.
REFERENCES:
patent: 1238762 (1917-09-01), Hapeman
patent: 1539582 (1925-05-01), Landry
patent: 3077238 (1963-02-01), Nelson
patent: 3606496 (1971-09-01), Haycock
patent: 3689123 (1972-09-01), Barbieri
patent: 3722961 (1973-03-01), Haley et al.
patent: 4448273 (1984-05-01), Barbieri
patent: 4699229 (1987-10-01), Hirose et al.
patent: 5273126 (1993-12-01), Reed et al.
patent: 5388656 (1995-02-01), Lagasse
patent: 5607210 (1997-03-01), Brazier
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