Implements or apparatus for applying pushing or pulling force – Nail extractor type
Reexamination Certificate
2000-06-30
2002-04-02
Watson, Robert C. (Department: 3723)
Implements or apparatus for applying pushing or pulling force
Nail extractor type
Reexamination Certificate
active
06364288
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pneumatic nail puller and more particularly pertains to a new air-driven nail puller device for easily and quickly removing a nail from a structure.
2. Description of the Prior Art
The use of a pneumatic nail puller is known in the prior art. More specifically, a pneumatic nail puller 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 includes U.S. Pat. No. 3,746,306; U.S. Pat. No. 3,643,918; U.S. Pat. No. 2,706,103; U.S. Pat. No. 2,597,594; U.S. Pat. No. 5,163,519; and U.S. Pat. No. Des. 334,329.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new air-driven nail puller device. The inventive device includes a housing having an elongate first end portion, an open first end, a second end, and a handle portion being disposed intermediate of the first and second ends with the elongate first end portion having a bore extending therethrough; and further includes a tubular shaft support member disposed within said housing and having a side wall; and also includes a drive shaft being movably disposed in the housing and having a first end and a second end; and further includes an engaging and clamping assembly for engaging and clamping about a nail head; and further includes an impacting assembly for forcing the first end of the drive shaft outwardly of the housing so that the engaging and clamping assembly engages and clamps about a nail head; and also includes a retraction assembly for retracting the first end of the drive shaft within the housing through the open first end.
In these respects, the air-driven nail puller device 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 easily and quickly removing a nail from a structure.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of pneumatic nail puller now present in the prior art, the present invention provides a new air-driven nail puller device construction wherein the same can be utilized for easily and quickly removing a nail from a structure.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new air-driven nail puller device which has many of the advantages of the pneumatic nail puller mentioned heretofore and many novel features that result in a new air-driven nail puller device which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art pneumatic nail puller, either alone or in any combination thereof.
To attain this, the present invention generally comprises a housing having an elongate first end portion, an open first end, a second end, and a handle portion being disposed intermediate of the first and second ends with the elongate first end portion having a bore extending therethrough; and further includes a tubular shaft support member disposed within said housing and having a side wall; and also includes a drive shaft being movably disposed in the housing and having a first end and a second end; and further includes an engaging and clamping assembly for engaging and clamping about a nail head; and further includes an impacting assembly for forcing the first end of the drive shaft outwardly of the housing so that the engaging and clamping assembly engages and clamps about a nail head; and also includes a retraction assembly for retracting the first end of the drive shaft within the housing through the open first end.
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 air-driven nail puller device which has many of the advantages of the pneumatic nail puller mentioned heretofore and many novel features that result in a new air-driven nail puller device which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art pneumatic nail puller, either alone or in any combination thereof.
It is another object of the present invention to provide a new air-driven nail puller device which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new air-driven nail puller device which is of a durable and reliable construction.
An even further object of the present invention is to provide a new air-driven nail puller device 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 air-driven nail puller device economically available to the buying public.
Still yet another object of the present invention is to provide a new air-driven nail puller device 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 air-driven nail puller device for easily and quickly removing a nail from a structure.
Yet another object of the present invention is to provide a new air-driven nail puller device which includes a housing having an elongate first end portion, an open first end, a second end, and a handle portion being disposed intermediate of the first and second ends with the elongate first end portion having a bore extending therethrough; and further includes a tubular shaft support member disposed within said housing and having a side wall; and also includes a drive shaft being movably disposed in the housing and having a first end and a second end; and further includes an engaging and clamping assembly for engaging and clamping about a nail head; and further
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