Motor vehicles – Special driving device – Portable track
Patent
1996-06-03
1997-10-07
Johnson, Victor E.
Motor vehicles
Special driving device
Portable track
180 925, 180 95, B62D 5506
Patent
active
056737661
ABSTRACT:
A tracked vehicle including a frame. A front track is rotatably attached to front track mounting member(s) connected to the frame with suspension member(s) so as to be movable in a vertical direction in relation to the frame. A vertically extending tubular steering shaft is attached to the front track unit. The steering shaft rotates the front track to steer the tracked vehicle. The steering shaft is connected to the frame with steering shaft mounting member(s) so as to be movable in a vertical direction in relation to the frame. A first gear is provided on the front track and a second gear is provided on the frame. The first gear and the second gear transmit driving power from the frame to the front track. An intermediate shaft extends through the tubular steering shaft from the first gear to the second gear for transmitting the driving power therebetween. The intermediate shaft includes at least two parts movable in relation to each other for lengthening and shortening the intermediate shaft along with relative movements between the front track and the frame.
REFERENCES:
patent: 1055010 (1913-03-01), Zager
patent: 1252167 (1918-01-01), Pettit
patent: 1966544 (1934-07-01), Dopp
patent: 2473375 (1949-06-01), Hyler
patent: 3061031 (1962-10-01), Packard
patent: 3419097 (1968-12-01), Nodwell et al.
patent: 3568786 (1971-03-01), Harsch
patent: 3680653 (1972-08-01), Murata et al.
patent: 3684044 (1972-08-01), Watson
patent: 4415055 (1983-11-01), Ahn
Derwert's abstract, No. 84-293061/47, week 8447, Abstract of SU, 1079527, Levshin, 15 Mar. 1984.
Patent Abstracts of Japan, vol. 10, No. 323, M-531, abstract of JP-A-61-129376, Mitsuibushi Electric Corp., 17 Jun. 1986.
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