High clearance vehicle hitch

A vehicle hitch for use with a high clearance vehicle which provides a means by which trailers and the like may be hitched to the high clearance vehicle at either the clearance height of the high clearance vehicle or the clearance height of a conventional vehicle.

BACKGROUND OF THE INVENTION 
1. FIELD OF THE INVENTION 
The present invention relates to a vehicle hitch for a high clearance 
vehicle, such as, for example, a four-wheel drive truck or recreational 
vehicle, wherein the vehicular hitch allows for the towing of a trailer or 
the like at varying heights. 
2. PRIOR ART 
Various adjustable vehicular hitches have been previously devised. U.S. 
Pat. Nos. 3,664,686 to Anderson; 3,692,330 to Kendall; and 3,922,006 to 
Borges, all disclose vertically adjustable vehicular hitches of various 
design. However, none of the hitches shown in these three patents meet the 
difficulties as will be subsequently described in this disclosure. 
High clearance vehicles, such as four-wheel drive trucks and recreational 
vehicles, are often times used for the purpose of towing trailers, boats, 
mobile campers, and other similar devices. However, because of the height 
of such vehicles above the ground, many trailers and the like cannot be 
effectively towed with a hitch mounted to the high clearance vehicle at 
the height of the vehicular frame. Consequently, it is necessary to 
provide, for some uses, a hitch attached to the high clearance vehicle 
which is lower than the height of the vehicular frame. However, when such 
a lowered hitch is permanently attached to the vehicular frame of a high 
clearance vehicle, the purpose for which the vehicle is provided with high 
ground clearance is defeated for the reason that the effective ground 
clearance of the vehicle then becomes the height above the ground of the 
lowered vehicular hitch. 
Whereas the above referenced patents disclose means of making a vehicular 
hitch vertically adjustable, all of those patents disclose a permanently 
and rigidly attached framework for the adjustable hitch, a part of which 
permanently remains at the lower most level of the vertically adjustable 
hitch. 
SUMMARY OF THE INVENTION 
The present invention discloses a vehicular hitch for a high clearance 
vehicle which provides a hitch mounting assembly at essentially the height 
of the vehicular frame as well as a hitch mounting assembly at a position 
generally vertically removed from the vehicular frame in a downward 
direction. In addition, the present invention discloses a vehicular hitch 
in which the lowered hitch mounting assembly may be simply and easily and 
completely removed from the higher hitch mounting assembly so as to insure 
full ground clearance of the high clearance vehicle when the lower 
vehicular hitch is not in use.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring to the drawing and the numerals of reference therein, the hitch 
of the present invention is shown generally in FIG. 1 as it attaches to a 
high clearance vehicle 10, such as, for example, a fourwheel drive 
pick-up, a four-wheel drive recreational vehicle, or any other vehicle 
which for one reason or another provides high ground clearance. The 
vehicular hitch of the present invention, 12, will be described later in 
much greater detail with reference to FIGS. 2 and 3. 
As shown in FIGS. 2 and 3, the vehicular hitch 12 comprises a first hitch 
assembly 14 and a second hitch assembly 16. FIG. 2 depicts the first hitch 
assembly 14 and the second hitch assembly 16 assembled together. In this 
configuration, the second hitch assembly 16 would preferably receive a 
hitch, such as a ball hitch, which is shown by dotted line only, for the 
towing of a trailer, boat, or the like at the lower position as will be 
described later in further detail. FIG. 3 depicts the second hitch 
assembly 16 detached and removed from the first hitch assembly 14. In this 
configuration, the first hitch assembly 14 would generally receive a hitch 
for towing a trailer, boat, or the like, at the higher level generally 
corresponding to the level of the frame of vehicle 10, as will also be 
described later in greater detail. 
As shown in FIGS. 2 and 3, the first hitch assembly 14 comprises a tubular 
rectangular cylinder 18. At a first end of the tubular rectangular 
cylinder 18 is attached a first support 20 extending perpendicular to the 
tubular rectangular cylinder 18. The first support 20 is permanently 
secured to the tubular rectangular cylinder 18, for example, by welding, 
and includes a mounting hole 22 at either end thereof for attachment 
directly to the vehicle 10. Further, attached to the opposite end of the 
tubular rectangular cylinder 18 is a second support 26. The second support 
26 comprises a metal plate 28 running perpendicular to the tubular 
rectangular cylinder 18 and welded thereto as shown at 34. Attached to the 
plate 28 is a support angle 30 containing mounting holes 32 at either end 
thereof with which the second support 26 is mounted directly to the 
vehicle 10. 
The second hitch assembly 16 comprises a second tubular rectangular 
cylinder 36 of essentially the same length as the first tubular 
rectangular cylinder 18. Secured to a first end of the second tubular 
rectangular cylinder 36 is a trapezoidal plate 38. A first end of the 
second tubular rectangular cylinder 36 protrudes through a trapezoidal 
plate 38 and is permanently secured thereto by welding as shown at 40. As 
can be seen from the drawings, the trapezoidal plate 38 is perpendicular 
to the second tubular rectangular cylinder 36 and generally extends 
upwardly in a verticle direction from the second tubular rectangular 
cylinder 36. Perpendicularly extending metal plates 42, 44, 52 and 54 are 
permanently secured to the second tubular rectangular cylinder 36 by 
welding as shown at 46 and 56. Plates 42 and 44 are grouped as are plates 
52 and 54 to form means for attaching the second hitch assembly 16 to the 
first hitch assembly 14. Each set of the plates 42, 44 and 52, 54 include 
mounting holes 48 and 58 at an upper end for detachably mounting to the 
first tubular rectangular cylinder 18. Although mounting of plates 42, 44, 
52 and 54 to the first tubular rectangular cylinder 18 may be done by a 
variety of means, a preferred means as shown in the drawings is a pin and 
cotter key as shown at 50 and 60. A stiffener plate 43 may be secured to 
plates 42 and 44 to add strength to the assembly. Additionally, plates 52, 
54 include a mounting hole 53 at the point where plates 52 and 54 attach 
to the second tubular rectangular cylinder 18, the purpose of which will 
be discussed later. 
As further shown by FIGS. 2 and 3, trapezoidal plate 38 includes a 
rectangular opening 62 vertically aligned with the point of attachment of 
the trapezoidal plate 38 to the second tubular rectangular cylinder 36. 
Rectangular opening 62 is so positioned that, as shown in FIG. 2, when the 
second hitch assembly 16 is secured to the first hitch assembly 14, the 
first tubular rectangular cylinder 18 protrudes through rectangular 
opening 62 to both insure the accessibility of the first tubular 
rectangular cylinder 18 for attachment of a hitch as will be discussed 
later, as well as to increase the rigidity of the vehicular hitch 12 as a 
whole. 
As has been previously discussed, both the first tubular rectangular 
cylinder 18 and the second tubular rectangular cylinder 36 are adapted to 
receive a hitch, of any standard design and which do not constitute a 
significant part of this invention. A typical hitch is shown in dotted 
line only. Standard hitches which may be used with the present invention, 
and all of which are adapted to fit into a rectangular holder such as the 
first tubular rectangular cylinder 18 or the second tubular rectangular 
cylinder 36 include a ball type hitch for use with relatively light loads 
and hitches for use with heavier loads which include stabilizer 
mechanisms, among others. The hitch may be secured in either hitch 
mounting assembly 16 or 18 by the use of either mounting hole 58 or 
mounting hole 53. 
In operation, the vehicular hitch of the present invention as shown in 
FIGS. 2 and 3 is secured directly to a high clearance vehicle 10 as shown 
in FIG. 1. With the second hitch assembly 16 attached to the first hitch 
assembly 14, as previously described, a high clearance vehicle has been 
adapted to tow a load, such as a trailer, boat, or other similar device, 
either at the vehicle height by using the first hitch assembly 14 or at a 
lower elevation by using the second hitch assembly 16. The level of the 
second hitch assembly 16 is designed to generally correspond with the 
vehicle height of a standard vehicle, such as a passenger car or a non 
four-wheel drive pick-up. It is often necessary to tow a load at the 
elevation of the second tubular rectangular cylinder 36 rather than at the 
elevation of the first tubular rectangular cylinder 18 due to the manner 
in which the trailer, boat, or other device to be towed is constructed. 
Frequently, such devices to be towed are two wheeled structures, with the 
weight of the trailer, boat, or the like, distributed in such a way that 
the device may only be towed safely when the device is maintained at a 
level elevation. Consequently, in such circumstances, to attempt to attach 
such a towed vehicle to a hitch at the elevation of the first tubular 
rectangular cylinder 18 would cause the weight of the towed device to be 
improperly distributed and thereby creating an unsafe situation. 
On the other hand, certain loads and devices to be towed may be hitched to 
the towing vehicle at the elevation of the first tubular rectangular 
cylinder 18 without difficulty. The hitch of the present invention 
provides the opportunity to place a hitch at either elevation as required. 
Further, when the device being towed may be attached at the higher 
elevation, or when the vehicle 10 is not towing any vehicle, the second 
hitch assembly 16 may be completely removed from the vehicle in question 
to avoid any low hanging structure which might interfere with the ground 
clearance provided by the high clearance vehicle 10.