FR2783644A1 - Magnet extraction tool for use on walls comprises threaded shaft for attachment and lever enabling easy removal of embedded magnets - Google Patents

Abstract

The device is screwed to the embedded magnet and provide simple leverage for extraction. The extraction tool comprises a threaded shaft (1) which passes at right angles through a straight lever (8) in order that its free end may be screwed into a magnet (2) which is embedded in a wall (13). At the top of the lever there is a block (3) which may pivot to either side of the lever as required, with a foot (4) which rests against the wall surface. An extended handle (5) is attached to the lever. When the tool has its threaded shaft attached to the magnet, the handle (5) is pulled away from the wall, exerting sufficient force on the magnet to extract it from its embedded position.

Description

The present invention relates to a device for extracting a

  magnet (with tapped hole) of a housing

  of equipment after formwork removal from a concrete wall.

  To make concrete walls, the mason uses metal formwork called formwork, the electrician who must incorporate equipment boxes before pouring concrete uses magnets which once positioned on the metal each receive a box which thanks to the power of the magnetization remains in its final location during the

pouring concrete.

  After formwork stripping, the magnet remaining in its casing does not

  not easily removed with the tools offered on the market.

  Extraction of this magnet in the high position with a stepladder can cause a worker to fall due to an extraction

brutal.

  This device, according to the invention, overcomes this drawback. Extraction is effortless, saving time and eliminating physical damage and longevity of the magnet. This device can be used both on an internal formwork face and on an external formwork face thanks to the lever which eliminates any physical effort, also facilitating the extraction operation and will avoid forgetting a magnet for example (by passing the arms by a window or leaning in

the end of a wall).

  The accompanying drawings illustrate the invention: Figure 1 shows the device of the invention and Figure 2 shows a variant of this device. With reference to these drawings, the device comprises a threaded rod (1) integral with an assembly part (8), one of its ends of which is equipped with an axis (10) which allows movement (as indicated by the arrow (F a) of the moving part (3) which receives a part

support (4).

  -2- The threaded rod (1) is held on the assembly part (8) thanks to the elements (11) which can be in particular nuts, the assembly part (8) receives in its lower part a handle (5 ) can be covered with a sheath (9) and in its upper part an axis (10) allowing the mobility of the part (3). Alternatively, the threaded rod (1) can be screwed using a knurled wheel (6), the assembly part and the movable part (3) can be reinforced by the elements (7) and the support piece (4) may, for its part, at its end a

  interchangeable element (metal, rubber, plastic ...).

  The support piece (4) tilted towards its user allows the latter to screw the threaded rod (1) into the magnet (2) without interference. The threaded rod (1) once screwed into the magnet (2) allows it to be removed from the housing (12) by pulling (as indicated by the arrow F) on the handle (5). This movement allows the part (4) to bear on the wall (13). This lever movement effectively removes

  the magnet (2) of the housing (12) which held it prisoner.

3 3-

Claims (5)

Claims   1) Device for extracting a magnet from an apparatus housing characterized in that it comprises a threaded rod (1) secured to an assembly part (8) one end of which is fitted with a part mobile (3) receiving a support piece (4) and the other end of which is extended by a handle (5). Said threaded rod (1) screwing into the magnet (2) to extract it from the housing (12) by pressing the part (4)   on the wall (13) and by pulling on the handle (5).   2) Device according to claim 1 characterized in that the threaded rod (1) is held on the assembly part (8) thanks to the elements (11).   3) Device according to claims 1 and 2 characterized   in that the assembly part (8) receives in its part   lower a handle (5) which can be covered with a sheath (9).   4) Device according to claims 1,2 and 3   characterized in that the connecting piece receives a pin (10)   allowing the mobility of the part (3) around said axis (10).    ) Device according to all of the claims   previous characterized in that the connecting piece (8) and   the part (3) are reinforced by elements (7).   6) Device according to all of the claims   previous characterized in that the support piece (4) comprises   at its end an interchangeable element.