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US 5,492,402 AGranted
Combination trailer and self propelled vehicle
AssigneeNone recorded
InventorRex Alton
Life of this patent
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AssigneeNone recorded
InventorRex Alton
Estimating the term…
The present invention is a combination trailer and self propelled vehicle which combines the maximum gradeability of all wheel drive with the ability to be efficiently and conveniently towed by conventional means at maximum permissible highway speeds. As this invention relates to concrete mixing, it provides an advance in the ability to get to a job site quickly and then efficiently transport and place concrete mix at the job site.
A combination trailer and self propelled vehicle which is both towable as well as self propelled comprising:
A towable self propelled vehicle comprising:
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Trailers with driven ground wheels or the like: driven from propulsion unit on trailer
Vehicles adapted to transport, to carry or to comprise special loads or objects: for carrying mixed concrete, e.g. having rotatable drums
Vehicles adapted to transport, to carry or to comprise special loads or objects: convertible from one use to a different one
Motor vehicles
Term ended 23 Jan 2015 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
This invention relates to a self propelled vehicle that is towable at maximum permissible highway speeds.
Several patent searches were conducted over the years. Among the classes and sub-classes searched were Class 280, Sub-Classes 402, 418.1, and 33,991; and Class 180, Sub-Class 14.1, 14.2, 14.3, 24.02, 24.05, and 24.06. Patents discovered:
______________________________________ 3,123,380 03/03/1964 Grim et al 3,209,850 10/05/1965 Fish 3,285,449 11/15/1966 Hand 3,594,018 07/20/1971 Graetz 3,635,300 01/18/1972 Gibbs 3,656,780 04/18/1972 Gustaf 3,680,720 08/01/1972 Strange 3,705,638 12/12/1972 Shock 4,031,976 06/28/1977 Lambert 4,542,990 09/24/1988 Fouquet 4,625,821 12/02/1986 Aumont et al 4,685,527 08/11/1987 Oswald et al 4,824,316 04/25/1989 Cobb 5,040,815 08/20/1991 Evans 5,056,984 10/15/1991 Hesterman ______________________________________
FIG. 1 illustrates a concrete mixer with front discharge conveyor embodiment of the present invention.
FIGS. 2 through 12 illustrate alternate embodiments of the present invention.
FIG. 13 illustrates the present invention with the best available fluid power drive alternate, a hydraulic pump, attatched to an engine, driving hydraulic motors affixed to the transfer case.
1. highway truck tractor with fifth wheel
10. combination trailer and self propelled vehicle
11. frame