Material or article handling – Self-loading or unloading vehicles – Conveyor
Reexamination Certificate
2000-07-31
2002-03-19
Valenza, Joseph E. (Department: 3651)
Material or article handling
Self-loading or unloading vehicles
Conveyor
C414S462000, C414S478000, C414S480000, C414S494000, C414S498000, C414S529000
Reexamination Certificate
active
06357991
ABSTRACT:
FIELD OF THE INVENTION
This invention is directed to the field of transportation and storage systems for watercraft, such as jet skis. The system includes a dolly which doubles as a transporting mechanism for the flat bed of a pickup truck.
BACKGROUND OF THE INVENTION
The present invention relates to a tiltable transportation system for watercraft, such as jet skis, for use in the operable mode on the flat bed of a pickup truck, and as a dolly for storage in the inoperable mode.
Jet skis, a popular watercraft recreational vehicle, are most often operated by a single user and due to the fast growing popularity of the sport, a demand has been created for an apparatus which will easily allow a personal watercraft to be loaded and unloaded from a vehicle, and stored by a single person. Such watercraft have up until now been transported primarily on a trailer which is towed behind the vehicle, or the flat bed of a pickup truck. In either case, there is typically some means for allowing the watercraft to be rolled therefrom into the water. Certain apparatus have also been developed for permitting personal watercraft to be transported, loaded and unloaded from the back of a vehicle such as a pickup truck.
Examples of such transporting systems for watercraft, and other vehicles, are found in the following U.S. patents:
a.) U.S. Pat. No. 5,899,466, to Twaits, Jr., teaches a small vehicle loader including a frame formed from a plurality of bars. A pair of wheels are mounted to the frame between a central extent and a front end thereof. A pair of stoppers are coupled to the frame to the rear of the wheels and extended downwardly from the frame.
b.) U.S. Pat. No. 5,810,546, to Schmoling, discloses apparatus for loading and unloading a personal watercraft from a bed of a pickup truck. The apparatus includes an outer rail assembly and an inner rail assembly adapted to telescopically slide into and out of the outer rail assembly. The outer rail assembly is of dimensions permitting it to lay flat on a bed of a pickup truck and to be releasably secured in the bed. Loading and unloading of the watercraft is accomplished by pulling the inner rail assembly slidably out from the outer rail assembly and resting one end on the inner rail assembly in shallow water. A pulley assembly is used by an individual to controllably lower the watercraft into the water or draw the watercraft up out of the water along the inner and outer rail assemblies. Once loading or unloading has taken place, the inner rail assembly is slidably inserted into the outer rail assembly. A dolly is disclosed for enabling the watercraft to be unloaded for storage off of the bed on a pickup truck by a single individual.
c.) U.S. Pat. No. 5,795,125, to Walkden, relates to an extendible ramp assembly for pickup trucks. A platform assembly having a hollow interior is bolted to the floor of the truck bed. A sliding platform is adjustably positioned within the platform assembly to allow for adjusting the angle of incline of an extendible ramp which is attached thereto. The sliding platform is designed to have a minimal thickness so that compression of the platform assembly does not affect movement of the sliding platform. A hinge plate is connected to the ramp to allow for a relatively smooth and continuous surface between the ramp and the top surface of the platform assembly.
d.) U.S. Pat. No. 5,603,600, to Egan et al., teaches an apparatus for loading and unloading a personal watercraft into the bed of a conventional pick-up truck requiring only a single operator. The device includes a support frame mountable to the bed of a pickup truck which supports at least one telescopic, pivotal ramp assembly. The ramp assembly including first and second sections which are telescoped together so as to extend and form an elongated ramp. The first ramp section is pivotally secured at its rear to the rear of the support frame by a hinge assembly. The hinge assembly allows the first and second sections to pivot together and also functions to guide the second ramp section as it slides along a channel in the length of the first ramp section. In operation the personal watercraft or personal watercraft is secured at its bow to a winch cable and pulled on a sled on the second ramp section, once on the sled the second ramp section travels along the first ramp section while the weight of the personal watercraft causes the ramp assembly to pivot downward until it lies in a horizontal plane.
e.) U.S. Pat. No. 5,556,249, to Heine, discloses a cargo loading and unloading system for use with a utility vehicle having a bed including a movable sled for retaining cargo items, a platform mountable to the bed of the utility vehicle for receiving thereon the sled, a ramp for receiving thereover the sled and for facilitating the moving the sled up onto and down from the platform, and a flexible mechanism interconnecting the platform and the sled for controlling the movement of the sled between the ground and the bed of the utility vehicle. The sled has a base, wheels for moving the sled on a support surface and a pair of spaced apart inner longitudinal members which are disposed between the opposite sides of the base. The platform includes a base and a pair of guide rollers disposed above and mounted to the end of the base at the rear end of the utility vehicle bed. The guide rollers mesh with the inner longitudinal members of the sled for the purpose of guiding the sled between the ramp and the platform. The ramp contacts the ground at one end to support the ramp in an inclined orientation such that a second end is engaged with the platform at the rear end of the bed.
f.) U.S. Pat. No. 4,274,788, to Sutton, relates a vehicle mounted carriage and elevating apparatus comprising a support frame secured to the vehicle. A link frame is pivotally secured to the support frame and a post frame is pivotally secured to the vehicle. A carriage which is movably secured to the post frame and to the link frame. Actuating apparatus is secured between the support frame and the carriage and is adapted to move the carriage from a lower inclined position extending rearwardly of the vehicle to a substantially horizontal elevated position wherein the center of gravity of the carriage is positioned above the vehicle and between the wheels of the vehicle.
g.) U.S. Pat. No. 4,212,580, to Fluck, teaches a loading and support rack for a pickup truck load bed and with the rack overlying and extending forwardly of the tailgate of the pickup truck when the tailgate is in a horizontal position. A horizontal transverse winch mounting structure is provided for support from the upper marginal edge portion of the forward wall of the truck bed and includes a winch supported from the mid-portion thereof and vertical stakes supported from the opposite ends thereof snugly downwardly receivable in the upwardly opening stake sockets of the side walls of a pickup load bed closely adjacent the forward end of the bed. An elongated support frame is also provided and includes front and rear ends, dependingly supported ground engageable wheels supported from opposite side portions of its rear end, slightly dependingly supported opposite side forward support wheels and a center real roller as well as opposite side rollers spaced centrally intermediate the opposite ends of the frame. In addition, the forward end of the frame includes an upper horizontal transverse member beneath which the bow of a boat supported from the frame may be received, and opposite side portions of the rear end of the tailgate supported rack include rollers along which opposite side longitudinal members of the boat supporting frame may roll with a boat supported thereon, to which boat the free end of the winch cable is attached for pulling the boat as well as the boat supporting frame up onto and in the load bed of the pickup truck.
One common sight today, though unrelated to the transportation of watercraft, is the transportable gurney used by ambulances and EMS vehicles. The gurney has collapsible wheels that allows the gurney to lie re
Noll William B.
Valenza Joseph E.
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