Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Reexamination Certificate
2002-08-02
2004-10-12
Watson, Robert C. (Department: 3723)
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
Reexamination Certificate
active
06802494
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wire retriever system and more particularly pertains to guiding electrical wires through relatively inaccessible openings.
2. Description of the Prior Art
The use of wire handlers of known designs and configurations is known in the prior art. More specifically, wire handlers of known designs and configurations previously devised and utilized for the purpose of guiding wires 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. 5,887,855 to Whitney et al discloses an electronics installation hand tool system. U.S. Pat. No. 3,896,534 to Kaufman et al discloses an electrical wire inserting tool. U.S. Pat. No. 5,265,326 to Scribner discloses a wire insertion hand tool for the insertion of wires, or similar strand-like material, within a wire containing duct. U.S. Pat. No. 5,458,317 to Caracofe et al. discloses a cable tool. U.S. Pat. No. 4,854,546 to Vea discloses a cable installation and placement implement. U.S. Pat. No. 4,386,800 to Segall discloses a tool for pulling cable. U.S. Pat. No. 4,054,264 to Elversson discloses a tool for moving a long flexible leading wire through hollow passages. U.S. Pat. No. 2,727,721 to Pinkerton discloses a conductor wire guide. Finally, U.S. Pat. No. 6,044,733 to Liu discloses a screwdriver having a retractable and flexible shank. While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a wire retriever system that allows guiding electrical wires through relatively inaccessible openings.
In this respect, the wire retriever system 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 guiding electrical wires through relatively inaccessible openings.
Therefore, it can be appreciated that there exists a continuing need for a new and improved wire retriever system which can be used for guiding electrical wires through relatively inaccessible openings. 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 wire handlers of known designs and configurations now present in the prior art, the present invention provides an improved wire retriever system. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved wire retriever system 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 wire. The wire has at least one free end. A handle is provided. The handle has a generally cylindrical configuration with a receiving end, a distal end and a central portion there between. The receiving end has a cylindrical configuration. The receiving end also has a cylindrical hollow interior portion. The interior portion has a first diameter and an open end. The receiving end further has a pair of circular apertures. The apertures are adjacent to the open end and are lying directly opposed to each other. The receiving end further has a pair of generally cylindrical apertures. These apertures are adjacent to the circular apertures and are also lying directly opposed to each other and parallel with the receiving end. The distal end has a cylindrical portion. The cylindrical portion is adapted to be held in the hand of a user. The cylindrical portion has a frustoconical region and a lip portion. Provided next is a plurality of wire retaining members. The wire retaining members have a cylindrical configuration. The wire retaining members have a second diameter. The second diameter is equal to the first diameter. Each retaining member has a working end with an aperture. Each aperture is adapted to receive the free end of the wire. A coupling end is provided. The coupling end has four conical recesses. The conical recesses are equally spaced there around. The recesses have a first circumference. The wire retaining members are adapted to fit in the hollow interior portion of the receiving end of the handle. Further provided is a sleeve. The sleeve has a cylindrical configuration with an external end, an internal end and an open central cylindrical portion. The sleeve is adapted to slide over the receiving end of the handle. The sleeve has a second pair of circular apertures. The circular apertures are opposed to each other. The central portion has a third diameter equal to the first and second diameter. The central portion has a recessed region of a fourth diameter. The recessed region is adjacent to the external end. The fourth diameter is larger than the first, second and third diameter. A pair of ball bearings is provided. The ball bearings are of a spherical configuration. The ball bearings have a second circumference. The second circumference is equal to the first circumference of the recesses of the wire retaining member and being adapted to reside in the circular apertures of the handle. The ball bearings have a first position when the sleeve is pulled toward the handle. In this manner the recessed region of the sleeve is allowed to lie adjacent to the circular apertures of the handle allowing the wire retaining member to be positioned within the hollow interior portion of the handle without obstruction by the ball bearings. A second position where in the sleeve being in a rest position and holding the ball bearings into the conical recesses of the wire retaining members allows the wire retaining member in to be held in place. Even further provided is a solid cylinder. The solid cylinder is adapted to pass through the circular apertures of the sleeve and the cylindrical apertures of the receiving end of the handle. In this manner the sleeve is adapted to slide between the first position and the second position in a uniform manner. Provided last is a spring. The spring is positioned in the cylindrical hollow interior portion adjacent to the central portion of the handle. The spring provides a biasing to the sleeve such that the sleeve remains in the second position until the user moves the sleeve into the first position when changing the wire retaining members.
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 pro
Dutklewicz Edward P.
Watson Robert C.
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