Land vehicles: dumping – Tilting – Operating mechanism
Reexamination Certificate
2000-09-06
2001-11-20
Gordon, Stephen T. (Department: 3612)
Land vehicles: dumping
Tilting
Operating mechanism
C298S00100V, C298S005000, C298S01700B, C298S01700B
Reexamination Certificate
active
06318808
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a lawn tractor/dump pull cart system with a supplemental wheel set assembly and more particularly pertains to enhancing the safety, utility and convenience of lawn carts coupleable to riding lawn mowers for towing, dumping and spreading.
2. Description of the Prior Art
The use of lawn tractors and dump pull carts of known designs and configurations is known in the prior art. More specifically, lawn tractors and dump pull carts of known designs and configurations previously devised and utilized for the purpose of improving lawn care equipment through known methods and apparatuses are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 5,395,163 to Mandell et al discloses a utility cart and latch assembly therefor. Also, U.S. Pat. No. 4,046,274 to Libersky discloses a power assist hitch for a hay transport. Lastly, U.S. Pat. No. 4,410,207 to Scharb discloses a bumper structure for vehicle having tiltable load carrier member.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a lawn tractor/dump pull cart system with a supplemental wheel set assembly that allows enhancing the safety, utility and convenience of lawn carts coupleable to riding lawn mowers for towing, spreading and dumping.
In this respect, the lawn tractor/dump pull cart system with a supplemental wheel set assembly according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of enhancing the safety, utility and convenience of lawn carts coupleable to riding lawn mowers for towing, spreading and dumping.
Therefore, it can be appreciated that there exists a continuing need for a new and improved lawn tractor/dump pull cart system with a supplemental wheel set assembly which can be used for enhancing the safety, utility and convenience of lawn carts coupleable to lawn tractors for towing and dumping. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of lawn tractors and dump pull carts of known designs and configurations now present in the prior art, the present invention provides an improved lawn tractor/dump pull cart system with a supplemental wheel set assembly. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved lawn tractor/dump pull cart system with a supplemental wheel set assembly and method which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises a dump pull cart. The dump cart includes a rectilinear body. The body has a horizontal base plate. The body also has a vertical extending front plate at the forward end. Vertically extending guide rails are provided rearwardly. The guide rails reciprocably support a gate plate. Vertically extending sidewalls are provided between the front plate and gate plate. A plurality of holes extend through the base plate adjacent to the rearward edge of the base plate. A primary wheel assembly is next provided. The primary wheel assembly includes a pair of laterally spaced axle supports secured to and extending downwardly from a central extent of the base plate. An axle is coupled to the axle supports. A large wheel is provided at each end of the axle beneath the base plate. A vertical central flange is provided. The flange extends downwardly from the body at the rearward end of the body. A pair of similarly configured vertical edge flanges are provided. The vertical edge flanges extend laterally from the body at the rearward end of the body. A pair of vertically aligned holes are provided through each edge flange. Next provided are a pair of similarly configured vertical support bars. Each support bar has an L-shaped cross section providing an interior segment positioned on the rearward face of an associated vertical edge flange. A pair of apertures align with the apertures of its associated edge flange. A pair of threaded fasteners extend through the apertures. Nuts are provided for removable retention purposes. Each vertical support bar also has an exterior segment extending forwardly and spaced laterally from the body. Each vertical support bar is provided with a lower first hole adjacent to the bottom and a second hole above the first hole. A pair of axles are provided. Each axle is formed of a threaded fastener. A small wheel is rotatably mounted on an associated fastener at its laterally exterior end. The threaded fastener extends through the second hole. A nut is provided on each side of the exterior segment of the vertical support bar. A horizontal support bar with an L-shaped configuration is provided. The horizontal support bar provides a vertical segment in contact with the forward face of the central flange. The horizontal support bar also provides a horizontal segment beneath, and adjacent to the rearward end of, the body A plurality of holes are provided through the horizontal segment adjacent with the holes in the body. Bolts are provided through the holes and nut are provided for releasable coupling. The horizontal segment has down turned ends which form tabs. The tabs are provided with holes aligned with the first holes of the vertical support bars. Threaded fasteners extend through the holes of the tabs and the first holes of the vertical support bars. Nuts are provided on each side of the tabs and on the exterior face of the vertical support bar. The cart system has a forwardly extending tow bar removably coupleable to a riding lawn mower. A spring hinged pivotable latch is provided. The latch is selectively cooperable to a finger extending downwardly from the base plate. In this manner when coupled with the gate plate down, the cart system may be used for towing and when uncoupled with the gate plate up and the cart tipped and resting on the four wheels the cart system may be used for dumping.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims attached.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of descriptions and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
It is therefore an object of the present invention to provide a new and improved lawn tractor/dump pull cart system with a supplemental wheel set assembly which has all of the advantages of the prior art lawn tractors and dump pull carts of known designs and configur
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