GB2415475A

GB2415475A - Coiled anchor device

Info

Publication number: GB2415475A
Application number: GB0413923A
Authority: GB
Inventors: Keith White
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-22
Filing date: 2004-06-22
Publication date: 2005-12-28
Also published as: GB0413923D0

Abstract

A coiled anchor device comprises diamond section wire which when helically coiled produces a cylindrical device having parallel outer sides and a tapered or stepped inner bore. When a threaded device, such as a screw, enters the anchor device, the bore becomes parallel and the outer sides becomes stepped or tapered.

Description

241 5475 Page 1 Wedge type anchor fixings for threaded, bolts, bars, rods

and devices as known in the prior art use a multiple of sections, which are forced outwards using a wedge device to increase the outer diameter of the sections creating a frictional resistance tightening it into the receiving hole. These either have a specific, or purpose made bolt as in Taylor GB 1309392, Kaufman US 3855896 or a wedge device that is forced into the multiple sections using a specific or purpose made tool as in Miyake US 4520521 All these devices and similar force sections outwards in a radial manner and consist of at least two or more component parts. This new invention consists of only one component part, this being a tapered element of a coiled spring, Prior art as known in Cram US 2586007 has a tapered element for the easy insertion of a threaded element into the parallel thread but is not tapered along its length and does not expand the wire coils as this invention device does when a threaded device is inserted According to the present invention there is provided a tapered element of a length of a sectional wire, rod or similar, which, when coiled in a helical manner with a plurality of coils will have an outer parallel male diameter and a tapered parallel pitch female thread that will expand to a parallel female thread when a matching male parallel threaded driven device is rotated such that it applies a force to the inner female tapered element of the coiled wire, rod or similar in a gradual manner whereby it expands to a parallel diameter forming a conical wedge on the outer male diameter of the coils creating a frictional resistance or be impressed into the inns longitudinal periphery of the hole that it has been inserted iron thereby securing the driven threaded device into the material into which the invention has been inserted A specific embodiment of the invention will now be described by way of example with rclerence to the accompanying drawings in which: Fig I shows the configuration of the wire or rod and the tapered element Fig 2 shows the greater of the two end sections Fig 3 shows the lessor of the two end sections Fig 4 shows an alternative end section Fig 5 shows an alternative end section Fig 6 shows an alternative end section Fig 7 shows the section of the device and the tapered element Fig 8 shows the device in use The invention fig 7 is a helical coiled wire, rod or similar device with a plurality of helical coils having a parallel outer male diameter fig 7 Xl-X2 on each coil and a tapered inner female diameter on each coil between distal ends fig 7 Yl and Y2 The invention is made from a tapered or partially tapered drawn, extruded rolled or otherwise manufactured wire, rod or similar fig 1 having an end section fig 1 1.4. The length of wire, rod or similar fig 1 between distal ends 1.2 and 1.3 is the required length of wire or rod for the fully coiled length of the invention fig 7 which can be of any length for which it is required.

The wire, rod or similar fig 1 is tapered between distal end 1.2 md distal end 1.3 whereby distal end 1.3 is the greater dimensions of the taper and distal 1.2 is the lessor dimensions of the taper. . There may also be a parallel section along this length between the distal end 1.2 and distal end 1.3 to form when coiled, an inner parallel section fig 7 7.2 of female thread on the invention fig 7 for easier insertion of the threaded device 8.1.

The taper on the rod wire or similar can be a straight continuous angle or line fig 1 1.1 between the distal end 1.3 and the distal end 1.2 or can be a line fig 1 1.1 with one or more angles or can be a curved line with one or more radu or can be stepped with a plurality of steps depending on the pitch, angles or forms of the threaded device 8.1 for which it is required.

Page 2 The sectionalshape and requirement fig 1 1.4 ofthewire, rodorsimilarateachdistalend 1.2and 1.3 will vary to the requirements of the thread pitch, angle, shape or form, or taper and is suitable for, by way of example but not limited to, Metric. AF, BSP or a non standard thread pitch, shape or form.

The taper fig I 1. Ion the wire, rod or similar whereby the taper is between the greater distal end 1.3 and lessor distal end 1.2 on the required length of the wire rod or similar and is on the A-A axis fig 2 of the section 1.4 along the length required of the wire or rod. The dimension, fig 3 3.1 of the thickness, of the section of the wire or rod on the B-B axis, fig 3 may be, parallel or non-parallel or tapered or stepped between the distal end 1.2 and the distal end 1.3 to the requirements, of the standard or non standard pitch, by way of example but not limited to Metric, AF, BSP for which it is required The dimensions of the section at the distal ends 1.2 and 1.3 will vary to the requirements of the diameter of the thread for which it is intended and the diameter of the receiving hole 8.2 for which it is intended.

The invention fig 7 is formed in a helicoidal coiled manner with a plurality of coils using a tapered or partially tapered wire, rod or similar fig 1. Manufactured from any suitable material, by way of example, but not limited to, stainless steel, copper, carbon steel, aluminium, alloys of two or more metal, plastics, nylon or any man made or processed material The angles, pitch or shapes of the section, fig 1 1.4 are angles pitch and shapes along one longitudinal edge fig 2 2.2 between distal end 1.2 and 1.3 as a means of forming a standard angle or pitch of a standard angle or pitch of a standard or non standard thread by way of example but not tin ited to, Metric, BSP, AF. The angles, pitch and shapes 2.2 form the inner female tapered or reducing diameter between distal ends Yl and Y2 fig 7 when heticoidly coiled. Whereby distal end Yl of the invention is the greater diameter and distal end Y2 of the invention is the lessor diameter, Conning a tapered parallel pitch thread 2.2 to suit a size by way of example but not limited to lOmm, 12mm, 3/8 AF, 1/2in BSP standard or non standard threads The angles, pitch or shapes along the opposing longitudinal edge fig 2 2.1 between distal ends 1.2 and 1.3 can be any angle pitch or shape fig 2 2.1 by way of example but not limited to fig 4, fig 5, fig 6 to forth a means of a gripping, frictional, compression impressed outer male contact with the surface of the material fig 8 X.3 with which it is in contact with by way of example but not limited to, concrete, brick, wood, plastics, nylon, metals and will, when helicoidly coiled, form the outer male parallel or tapered dimension for easy insertion, diameter fig 7 X1-X2, The wire rod or similar has two tapered opposing longitudinal edges whereby one edge has a standard or non-standard pitch or ample 2.2 lo form a tapered female parallel thread diameter and the opposing edge has a gripping element 2.1 to form a male outer diameter when coiled with a plurality of coils.

The tapered wire, rod or similar 1.1 is formed in a helicoidal coil manner with a plurality of coils, and coiled either right hand or left hand in a size and diameter to be suitable for a threaded device 8.1 which can be right or left hand, whereby the outer diameter is PaIallel with a pitch, angle, shape,or form by way of example but not limited to fig 2 2.1, fig 4, fig 5, fig 6, and the inner diameter is tapered with a standard or non standard female parallel pitch thread, by way of example, but not limited to, Metric, BSP, AF. And of a size by way of example but not limited to lOmm 12rnm 3/8 AF,1/2" BSP The invention when inserted into a fonned hole fig X X.2 of a size suitable for the outer diameter fig 7 Xl -X2 and a parallel threaded device fig X 8.1 with a standard or non standard thread pitch or angle X.4 and diameter to match or is suitable for the thread pitch or angle 2.2 and size of the internal female thread of the device, is inserted and rotated to travel such that the parallel threaded device X. I travels from distal end Yl to distal end Y2 fig 7 and thereby exerts a force upon and causes the tapered inner female thread of the coil 2.2 to become forced outwards and become parallel with the threaded device X. 1 and as each coil is enlarged and opened by the travel of the threaded device X. 1 it will Page 3 become parallel on each of the coils on the inner female diameter and the outer parallel diameter of each of the coils will become greater and will form a gradual conical taper on the outer diameter and thereby greater than the receiving hole 8.2 which is parallel into which the invention fig 7 has been inserted and will create a gradual helicoidal outward pressure and frictional resistance and may be impressed into the material between the invention fig 7 a threaded device 8.1. and the material 8.3 into which the invention has been inserted into and thereby forming an anchor for the threaded device into the material which it has been inserted and form a fixing for any work piece 8.5 that requires fixing

Claims

Claims I A coiled anchor device, comprising a substantially cylindrical

body having a parallel outer diameter and a tapered inner diameter formed in a helical manner from a length of generally diamond shaped sectional wire or rod having a diminishing taper, partial taper, step or steps longitudinally between the two distal ends of the length of required wire for the device on one sectional axis and being longitudinally parallel on the opposing sectional axis at approximately gO degrees.
2. A coiled anchor device as claimed in claim 1, formed with a generally diamond shaped sectional wire or rod having a plurality of tapered divisions or ascending or descending steps longitudinally on one axis and being longitudinally parallel on the opposing axis at approximately 90 degrccs.
3. A coiled anchor device, as claimed in claim 1 and is formed in a helical manner, has a parallel outer diameter and a tapered, variable or stepped timer diameter between the two distal ends of the device.
4. A coiled anchor device as claimed in claim 1 and is formed in a helical manner, has a parallel outer diameter and a partially tapered, partially parallel, variable or stepped inner diameter between two distal ends of the coil.
5. A coiled anchor device, as claimed in claim 1 and is formed in a helical manner, has a parallel outer diameter and a stepped or a plurality of steps forming the inner diameter between the two distal ends of the device. .
6. A coiled anchor device, as claimed in claim 1, formed with a sectional wire, whereby, one

longitudinal edge of the generally diamond shaped end section of the wire or rod is shaped or formed to the pitch, angle and size of a standard thread and forms the inner tapered, variable or stepped diameter between the two distal ends of the device. ...CLME:
7. A coiled anchor device, as claimed in claim 6, formed with a sectional wire whereby, one . longitudinal edge, of the generally diamond shaped section wire or rod is shaped or formed to the pitch angle size of a non standard thread and is the inner tapered, variable or stepped diameter between the two distal ends of the device.
8. A coiled anchor device, as claimed in claim 1, formed with a sectional wire whereby one : : longitudinal edge of the generally diamond shaped section wire or rod is shaped or formed to any pitch, angle, radius, shape, form or size and is the outer generally parallel diameter.
9. A coiled anchor device, as claimed in claim 1, whereby one edge of the generally diamond shaped wire when coiled in a helical manner creating a standard or non standard thread pitch forming the inner reducing or tapered diameter thread and the opposing edge of the wire having any suitable configuration and fonns the outer parallel diameter.
10. A coiled anchor device, as claimed in claim 1, claim 2, claim 3, claim 4, claim 5, will, when inserted into a suitable sized hole and a suitably sized parallel threaded driven device, is rotated, such that it passes or partially passes through to inner reducing diameter of the helical coiled anchor, the helical coiled anchor will gradually expand into the inner periphery of the receiving hole, undercutting or cutting into the material into which the coiled anchor device has been inserted.
I 1. A coiled anchor device substantially as described with reference to figures I to X of the accompanying drawings.
12. A coiled anchor device, as claimed in claim 1' formed with a generally diamond shaped tapered or stepped sectional wire or rod whereby the inner diameter is formed as a standard or non standard pitch tapered thread and the outer diameter is fonned as a standard or non standard pitch parallel thread.
13. A coiled anchor device, as claimed in claim 12 with a standard or non standard pitch parallel outer thread, is inserted into a matching parallel receiving thread within the material and a matching, parallel threaded driven device, is rotated such that it travels through the inner tapered thread of the device. The device will expand creating a greater frictional resistance between the driven device the coiled anchor device and the receiving thread of the material. -e e e.

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