Motor vehicles – Having four wheels driven – With means for steering all driven wheels
Patent
1991-01-24
1993-05-11
Focarino, Margaret A.
Motor vehicles
Having four wheels driven
With means for steering all driven wheels
180134, 280442, B62D 1300
Patent
active
052093204
ABSTRACT:
An offroad agricultural vehicle of the type operable to be used as a crop pesticide sprayer, fertilizer distributor and the like including a first frame having at least one load bearing ground engaging wheel and at least one wheel having an axis of rotation substantially parallel to a ground surface, a second frame having at least one load bearing ground engaging wheel and at least one wheel having an axis of rotation substantially parallel to a ground engaging surface, a drive which operably effects rotation of at least one of the load bearing ground engaging wheels, a universal pivot bearing positioned between a juncture of the first and second frames which permits relative pivoting motion between the first and second frame, a steering element including an arcuate rack, a pinion gear and an element for maintaining engagement of the pinion gear with the arcuate rack and an element for driving the pinion gear in opposite directions to impart lateral movement of the first frame with respect to the second frame.
REFERENCES:
patent: 449980 (1891-04-01), Thurman
patent: 1373981 (1921-04-01), Smith
patent: 1761669 (1930-06-01), Howard
patent: 1841619 (1932-01-01), Maines
patent: 2349141 (1944-05-01), Champion
patent: 2426652 (1947-09-01), Storey
patent: 2673616 (1954-03-01), Moores
patent: 3529690 (1970-09-01), Mathew
patent: 4444409 (1984-04-01), Garrison
patent: 4662472 (1987-05-01), Christianson et al.
Boehler Anne Marie
Focarino Margaret A.
Kile Bradford E.
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