Land vehicles – Wheeled – Extensible
Reexamination Certificate
1999-03-25
2001-04-24
Swann, J. J. (Department: 3611)
Land vehicles
Wheeled
Extensible
C280S047340, C269S017000, C298S002000
Reexamination Certificate
active
06220622
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to wheelbarrows and more particularly pertains to a new Wheelbarrow Rear Wheel System for improving the ease of use of a wheelbarrow.
2. Description of the Prior Art
The use of wheelbarrows is known in the prior art. More specifically, wheelbarrows heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.
Known prior art wheelbarrows include U.S. Pat. No. 4,962,833; U.S. Pat. No. 4,854,601; U.S. Pat. No. 5,149,116; U.S. Pat. No. 4,479,658; U.S. Pat. No. D349,797; and U.S. Pat. No. 4,261,590.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new Wheelbarrow Rear Wheel System. The inventive device includes a frame assembly secured to the underside of a wheelbarrow and a wheel assembly coupled to the frame assembly. The wheel assembly includes a pair of spaced wheels and is adjustable so as to enable a user thereof to raise and lower the rearward portion of the wheelbarrow.
In these respects, the Wheelbarrow Rear Wheel System according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of improving the ease of use of a wheelbarrow.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of wheelbarrows now present in the prior art, the present invention provides a new Wheelbarrow Rear Wheel System construction wherein the same can be utilized for improving the ease of use of a wheelbarrow.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new Wheelbarrow Rear Wheel System apparatus and method which has many of the advantages of the wheelbarrows mentioned heretofore and many novel features that result in a new Wheelbarrow Rear Wheel System which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art wheelbarrows, either alone or in any combination thereof.
To attain this, the present invention generally comprises a frame assembly secured to the underside of a wheelbarrow and a wheel assembly coupled to the frame assembly. The wheel assembly includes a pair of spaced wheels and is adjustable so as to enable a user thereof to raise and lower the rearward portion of the wheelbarrow.
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 additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
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 description 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.
Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
It is therefore an object of the present invention to provide a new Wheelbarrow Rear Wheel System apparatus and method which has many of the advantages of the wheelbarrows mentioned heretofore and many novel features that result in a new Wheelbarrow Rear Wheel System which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art wheelbarrows, either alone or in any combination thereof.
It is another object of the present invention to provide a new Wheelbarrow Rear Wheel System which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new Wheelbarrow Rear Wheel System which is of a durable and reliable construction.
An even further object of the present invention is to provide a new Wheelbarrow Rear Wheel System which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such Wheelbarrow Rear Wheel System economically available to the buying public.
Still yet another object of the present invention is to provide a new Wheelbarrow Rear Wheel System which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.
Still another object of the present invention is to provide a new Wheelbarrow Rear Wheel System for improving the ease of use of a wheelbarrow.
Yet another object of the present invention is to provide a new Wheelbarrow Rear Wheel System which includes a frame assembly secured to the underside of a wheelbarrow and a wheel assembly coupled to the frame assembly. The wheel assembly includes a pair of spaced wheels and is adjustable so as to enable a user thereof to raise and lower the rearward portion of the wheelbarrow.
Still yet another object of the present invention is to provide a new Wheelbarrow Rear Wheel System that would effectively transform a conventional one-wheeled wheelbarrow into a three-wheeled wheelbarrow. As such, the three-wheeled wheelbarrow would be more maneuverable wherein a user thereof would not have to lift the wheelbarrow while pushing it. Accordingly, the present invention would reduce the effort necessary for moving the three-wheeled wheelbarrow. Thus, reducing the risk of back injuries which can result from lifting and moving a conventional one-wheeled wheelbarrow.
Even still another object of the present invention is to provide a new Wheelbarrow Rear Wheel System that can be easily installed on a conventional wheelbarrow.
These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated preferred embodiments of the invention.
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patent: 408994 (1889-08-01), Stambaugh et al.
patent: 717471 (1902-12-01), Tanner
patent: 2598261 (1952-05-01), Hrabal
patent: 2718405 (1955-09-01), Casey
patent: 3581671 (1971-06-01), Hart
patent: 3722904 (1973-03-01), Puckett
patent: 3741586 (1973-06-01), Wicze
Bottorff Christopher
Swann J. J.
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