GB2531594A

GB2531594A - Multi Purpose Demolition wrecking tool

Info

Publication number: GB2531594A
Application number: GB1418894.0A
Authority: GB
Inventors: Hook Graham
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-23
Filing date: 2014-10-23
Publication date: 2016-04-27
Also published as: GB201418894D0

Abstract

A demolition hand-tool comprises an elongate handle 3, a round head 2 forming a striking surface 5 provided at one end of the handle, a nail-puller 4 provided at the other end of the handle, and a chiselled nail-puller 1 extending from the round head at an angle to the handle. The tool may be firmed from a single piece of metal. The head 2 may have a hardness of Rockwell C38 to C44.

Description

A multi-purpose demolition wrecking bar.

Background

Multi-functional demolition wrecking bar "crow bar" for dismantling and demolition of materials where space is restricted by levering in multiple directions with minimal damage.

Example

When levering material mostly timber away from another piece of timber damage or marring can occur to the piece acting as the fulcrum, also in limited space the bar cannot be levered in a straight direction away from the item of timber without damaging said material.

Statement of invention

My invention incorporates using a "ball" shape sphere at the base of the wrecking bar with a chisel blade protruding from this which enables the bar to be used within multiple angles of leverage with the ability of the ball shape to limit damage to materials.

This "ball" shape can also be used for demolition as a "hammer" using the rear of the ball design. As this design would create more weight thus producing enough inertia at this end it acts usefully as a tool for wrecking.

Advantages My invention can be used for multiple uses for A demolition and B in separating 2 materials from each other, in particular timber from timber without causing excessive marring of the each timber where restoration and salvage of the materials is paramount.

It is also ideal to be used in confined spaces where the fulcrum can be used in multiple angles to give to best possible leverage needed.

Since the shape of the bar at the point used as the pivot is of a ball shape the force can be applied in various angles over 180 degrees which is ideal for awkward, restricted situations.

Description

Figure 1 shows a perspective elevation of a demolition tool according to an embodiment of the invention.

Figure 2 shows a side elevation of a demolition tool according to an embodiment of the invention.

Figure 3 shows a front elevation of a demolition tool according an embodiment of the invention.

A multi-purpose wrecking bar with a ball shaped base 2 to provide additional support and leverage in multiple directions providing a base as a pivot to reduce marring of timber or any material being used against.

The bar has nail pullers land 4 at either end with a chisel shaped edge to insert between 2 materials for prying apart.

The ball shaped part of the bar to be used as the pivot is designed to enable leverage once the adjacent chiselled end has been inserted between two items for prying apart, the alternative end can then be used to apply force in a variety of angles adjacent or perpendicular to the items.

The rear of the ball end 5 can also be used as a face for striking either for applied force for insertion of the chiselled end or as a force against objects for the purpose of demolition.

The design of the shape at the base of the bar is to enable it to pivot in various directions away from the object being dismantled. Being a ball shape of 360 degrees the lever is not limited to be used in one direction. The ball shape can also act as a tool for demolition, hitting, smashing, akin to use of a hammer.

The bar has a first round pry har end attached to a long lever arm and a second bent pry bar end at its opposite terminus.

An alternative to this design is without the second bent pry bar end resulting in a simple straight handled end.

The demolition tool, including the handle/bar, the head, the bent end pry bar, and/or other portions of the demolition tool, may comprise a single integrally molded metal material, as opposed to multiple parts jointed or fastened together. In one embodiment, the demolition tool is manufactured to weigh between 2.5 to 4.5 lbs., and in one embodiment, approximately 4 lbs. This weight provides a tool with enough mass and inertia to aid in demolition of construction materials or other materials. Also the material used is to provide enough strength for various uses of this tool also in leverage. In one embodiment, the demolition tool may be hardened to Rockwell C 38-44. Thus, the demolition tool is softer than conventional tools that can be used to strike it, but harder than the materials it is used to strike (e.g., wood, aluminum, or other materials).

The pry bar may come in a variety of sizes or axial lengths. Practical sizes for many applications range from about six inches to about thirty-six inches, although any size may be used.

All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.

The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms "comprising," "having," "including," and "containing" are to be construed as open-ended terms (i.e., meaning "including, but not limited to,") unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.

Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context a crowbar, wrecking bar, pry bar, or pry bar, pinch-bar or sometimes (in British usage) a prise bar, prisebar, and more informally a jimmy, jimmy bar, jemmy or gooseneck is a tool consisting of a metal bar with a single curved end and flattened points, often with a small fissure on one or both ends for removing nails. In the United Kingdom, Ireland and Australia, "crowbar" may occasionally be used loosely for this tool, but may also be used to mean a larger straighter tool. The term jemmy or jimmy most often refers to the tool when used for burglary.

It is used as a lever either to force apart two objects or to remove nails. Crowbars are commonly used to open nailed wooden crates. Common uses for larger crowbars are: removing nails, prying apart boards, and generally breaking things. Crowbars can be used as any of the three lever classes but the curved end is usually used as a first-class lever, and the flat end as a second class lever. In mining, crowbars are used to break blasted rocks and to remove loose rock on roof sides and the working face, but not as much in modern mining

Claims

CLAIMS(7) 1. A multi-use demolition tool, comprising: a handle/bar 3 having first 2 and second 4 ends; a round ball shaped head 2 located at the first end of the handle/bar 3.
2. The demolition tool of claim 1, wherein the head 2 is including of a strike face 5 at the opposite end to the chisel tip 1, the chiseled tip linclusive of a nail puller with the second end 4 consisting of a bent chisel blade and a tip with a nail puller.
3. The demolition tool of claims 1-2, wherein the first end head 2 has a round ball shaped end to pivot on with a chisel blade 1 protruding from this adjacent to handle 3 with rounded edges and flattened sections tapering towards the tip with a v groove and a flattened sharpened edge for pulling nails and wedging in between materials.
4. The demolition tool of claims 1-3, wherein the shape of the bar end 2 used for pivoting is a round sphere ball shape to enable various degrees of leverage using handle 3 to apply force in confined spaces or limited space.
5. A multi-use demolition tool of claims 1-4, comprising: a handle 3 having first 2 and second 4 ends; the first end 2 a round ball shape also to be used in demolition as a striking end 5.
6. The demolition tool of claims1-5, wherein at least the strike face 5 has a hardness of between Rockwell C 38 and Rockwell C 44.
7. A demolition tool according to claims 1-6, wherein the demolition tool is integrally formed from a single piece of material.
8. A demolition tool according to any preceding claim, wherein the demolition tool weighs between 2.5 (approx. 1.6 kg) and 4.5 lbs. (approx. 3.5 kg).