Locknut Wrench, Leveling Device and Screwdriver Combination Tool

Abstract

A combination tool of the locknut wrench type, which includes a leveling device and a screwdriver blade on the opposite end. The locknut head and screwdriver ends may be interchanged depending on the size locknut wrench needed and the type of screwdriver needed.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention is related to a wrench-type tool, and specifically to a wrench with a leveling device included for engaging locknuts and screws as employed with electrical connectors.

2. Description of the Related Art

Locknuts are typically screwed against the end of a conduit to hold it securely so as to provide an electrical ground. They commonly take the form of a collar having internal threads and may be constructed of various materials (e.g., metal, plastic) and come in a variety of shapes (e.g., hexagonal, square, round) and sizes.

Locknuts used in association with electrical conduit are typically annular metal rings. The locknut includes a threaded inner surface for engaging a complementary threaded outer surface on the electrical connector. A series of projections known as lugs, commonly six or eight, extend radially from the ring. Between the lugs are rounded openings or scallops.

Locknuts are used to secure of sections of electrical connectors within electrical junction boxes. A junction box thereby serves to join different runs of raceway or cable and provides space for the connection and branching of the enclosed conductors. The connectors are typically further secured by use of a screw.

A common method of attaching an electrical connector to a junction box includes using a locknut wrench to tighten the locknut and a screwdriver to tighten the screw in the electrical connector. Additionally, after the electrical connector is attached, a leveling device is needed to ensure the conduit is level.

Other patents add screwdrivers and a variety of tools, but they do not go far enough. The need exists for an efficient tool for tightening locknuts and screwing the electrical connector in place, and ensuring the conduit is level. By combining a screwdriver, a locknut wrench, and a leveling device in a variety of embodiments, it will allow the user to replace three tools with one.

OBJECTIVE OF THE INVENTION

The main objective of the invention is to provide a locknut wrench that has the ability to also be used as a screwdriver and a leveling device, thus allowing the user to use one tool instead of three, to properly secure an electrical connection to a junction box.

SUMMARY OF THE INVENTION

The invention for achieving the aforementioned objects is a locknut wrench capable of being used to tighten or loosen locknuts and screws, and ensure the conduit is level. The invention provides a wrench with a head, that can be used to tighten locknuts; a handle, which can be used as a leveling device and can be covered by a padding that provides insulation, cushion, and/or is absorbent; and an opposite end provides a screwdriver for aiding the user in the tightening the set screw.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view of a junction box with electrical connectors attached to it, with and without locknuts.

FIG. 2 is a view of a locknut.

FIG. 3 is a perspective view of the tool engaging a locknut, which is being used to secure an electrical connector, on a junction box.

FIG. 4 is a perspective view of the locknut wrench with a screwdriver attached to the opposite end.

FIG. 5 is a perspective view of the tool engaging a set screw, which is being used to secure an electrical connector, on a junction box.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Embodiments of the present invention are now explained. Although the disclosure is sufficient to enable to those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention, which may be embodied in other structures. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.

FIG. 1 shows a conventional electrical junction box having a bottom wall and four side walls. The box includes a series of scored knock-out sections that are well known in the art. Removal of a knock-out, e.g., by striking the section with a hammer, results in an opening that permits passage of an electrical connector.

Conventional connectors include a threaded end region sized and configured for passage through the opening. Connectors are available in a variety of sizes. The connector is typically secured within the junction box by a locknut.

FIG. 2 shows a conventional locknut used for electrical connectors is typically an annular metal ring having a threaded inner surface sized and, configured to mate with the threaded end region of the connector within the junction box. Extending from the outer periphery of the ring is a series of projections, or lugs. The areas between adjacent lugs define a series of rounded openings, or scallops. Locknuts employed with electrical connectors typically have either six lugs or eight lugs and come in a range of various sizes to accommodate the various sizes of connectors.

FIG. 3 shows a wrench tool for engaging both a locknut and screw. The tool is particularly well suited for engaging a locknut such as that used to secure an electrical connector, and thus will be described in accordance with such use. However, uses of the tool to engage and secure other fittings are contemplated and will be apparent to those skilled in the art that read this disclosure.

The tool having a head that is complementary to the locknut is then positioned to engage the locknut. The handle is then manipulated to rotate the locknut in a first direction to tighten the locknut. The locknut may then be rotated in the opposite direction to loosen and remove the locknut.

FIG. 4 illustrates an embodiment in which the head includes six tangs, configured to engage a locknut having six lugs, and the opposite end includes a flathead screwdriver configured to engage a similar screw. The tool may be made of steel, a combination of steel and plastic, or other suitable materials and formed by mold, die, or machining. The heads may be interchanged for heads of different types and sizes (six tangs, eight tangs; ½ inch, 1 inch, etc.), and the screwdriver may be interchanged for different types (e.g. flathead, Phillips, etc.).

FIG. 5 shows a wrench tool engaging a set screw. The tool having an end that is complementary to a screw is then positioned to engage the screw. The handle is then manipulated to rotate the locknut in a first direction to tighten the screw. The screw may then be rotated in the opposite direction to loosen and remove the screw.

Claims

1: A tool for engaging a nut and screw, the nut configured for engaging an abutting surface and having at least one laterally-extending projection, the tool comprising: a handle;a plurality of heads connected to a handle, at least one head of said plurality of heads comprising a wrench, said wrench having a plurality of upstanding axially projecting tangs for alternatively engaging opposing sides of the projection, andat least one head of said plurality of heads comprising a screwdriver for alternatively engaging screws.

2: The tool according to claim 1, in which the handle comprises a leveling device.

3: The tool according to claim 2, in which at least one of the said plurality of heads connected to said handle are interchangeable with other heads, forming other tool types and able to engage different locknut and screw sizes, wherein the wrench is able to be rotated at an angle.

4: The tool according to claim 3, in which the screwdriver is able to be rotated at an angle.

5: The tool according to claim 4, in which the wrench is able to engage a locknut.

6: The tool according to claim 5, in which the screwdriver is a slotted (i.e. flathead) type screwdriver.

7: The tool according to claim 5, in which the screwdriver is a cross (i.e. Phillips) type screwdriver.

8: The tool according to claim 6, in which the screwdriver is a Torx type screwdriver.

9: A tool for engaging a nut and screw, the nut configured for engaging an abutting surface and having at least one laterally-extending projection, the tool comprising: a screwdriver type handle;a plurality of heads connected to the handle, at least one head of said plurality of heads comprising a wrench, said wrench having a plurality of upstanding axially projecting tangs for alternatively engaging opposing sides of the projection, andat least one head of said plurality of heads connected to the handle having a screwdriver for alternatively engaging screws.

10: The tool as in claim 9, wherein the handle has a leveling device included.

11: The tool according to claim 10, in which at least one of the said plurality of heads connected to said handle are interchangeable with other heads, forming other tool types and able to engage different locknut and screw sizes, wherein the wrench is able to be rotated at an angle.

12: The tool according to claim 11, in which the screwdriver is able to be rotated at an angle.

13: The tool according to claim 12, in which the wrench is able to engage a locknut.

14: The tool according to claim 13, in which the screwdriver is a slotted (i.e. flathead) type screwdriver.

15: The tool according to claim 14, in which the screwdriver is a cross (i.e. Phillips) type screwdriver.

16: The tool according to claim 15, in which the screwdriver is a Torx type screwdriver.

17: The tool according to claim 8, in which said handle covered by an insulating cushion material.

18: The tool according to claim 16, in which said handle covered by an insulating cushion material.

19: The tool according to claim 17, in which said handle is also covered by an absorbent material.

20: The tool according to claim 18, in which said handle is also covered by an absorbent material.