AU2005100644A4

AU2005100644A4 - Rollable Magnetic Clamp

Info

Publication number: AU2005100644A4
Application number: AU2005100644A
Authority: AU
Inventors: Ian Heard
Original assignee: SERPENT AND DOVE Pty Ltd
Current assignee: Heard Ian Godfrey; SERPENT AND DOVE Pty Ltd
Priority date: 2005-08-09
Filing date: 2005-08-09
Publication date: 2005-09-08
Anticipated expiration: 2013-08-09

Description

Description Field of the Invention The invention relates to all types of magnetic clamping devices, and more to particularly those of the common two pole type as are used to clamp, retain or position iron and steel workpieces for fusion and bonding processes such as welding.

Background of the Invention Magnetic clamping devices are widely used to clamp iron or steel workpieces in position during bonding and welding processes. When such clamps are in full face contact on two sides with a workpiece they can be difficult to remove after use, particularly where the clamp is used to secure two pieces of steel at right angles. Further, when securing two pieces, such clamps often need to be tapped into position against both workpieces with a soft hammer. There is a need, therefore, for a clamp that more conveniently moves onto and away from the workpieces it is clamping.

Brief Description of the Drawings FIG. 1 illustrates Items A and B as two standard and typical styles of magnetic clamps which may be of any size or shape.

FIG.2 shows wheels or rollers, Item C, preferably of non-magnetic material, fitted so as the provide a small air gap between the gripping edges of the clamp and the workpiece, Item D, making it possible to roll the magnetic clamp along any workpiece and into and away from either of two surfaces.

Claims

1. In a magnetic clamp of the type having two or more of pole plates with a magnetizing element between them, rollers or wheels of preferably non-magnetic material such as aluminium or brass fixed rotatably between the pole plates and of such diameter and location that their perimeter always provides a small clearance between the edges of the pole plates and any surface upon which the clamp is placed for the purpose of clamping.

2. In a magnetic clamp of the type having two or more pole plates with a magnetizing element between them, rollers or wheels of preferably non-magnetic material such as aluminium or brass fixed rotatably on the outer side of the pole plates and of such diameter and location that their perimeter always provides a small clearance between the edges of the pole plates and any surface upon which the clamp is placed for the purpose of clamping.

3. In a magnetic clamp of the type having two or more pole plates with a magnetizing element between them, rollers or wheels of magnetic material such as soft iron fixed rotatably on the outside of the pole plates and of such diameter and location that their perimeter always provides a small clearance between the edges of the pole plates and any surface upon which the clamp is placed for the purpose of clamping.

4. Claims 1, 2 and 3 above where the wheel or roller element is fixed and non-rotatable. A magnetic clamp as described in claims 1 to 4 above where the element to provide clearance between the clamping edges of the clamp and the surface to which it clamps is a magnetic or non- magnetic and non-rotatable skid or protrusion.