Removable magnetic liner and screening media, and processes of production, installation, and use thereof

• US 9,283,700 B2
• Filed: 06/21/2010
• Issued: 03/15/2016
• Est. Priority Date: 12/23/2009
• Status: Active Grant

• Current Assignee: Tema Isenmann, Inc. (Steinhaus Gesellschaft Mit Beschrankter Haftung)
• Original Assignee: Tema Isenmann, Inc. (Steinhaus Gesellschaft Mit Beschrankter Haftung)
• Inventors: Stackpole, Benjamin
• Primary Examiner(s): Austin, Aaron
• Assistant Examiner(s): Gaitonde, Megha
• Application Number:
  US12/819,674
• Publication Number:
  US 20110151178A1
• Time in Patent Office: 2,094 Days
• Field of Search: 428/156, 428158-160, 428/172, 428/67, 428/161, 428/162, 428/163, 428/168, 428/187, 428/904.1, 428/908.8, 521/77, 521/81, 523/091.6, 512/95, 512/97
• US Class Current: 1/1
• CPC Class Codes: B07B 1/46 Constructional details of screens in general; Cleaning or heating of screens
• CPC Class Codes: B07B 2201/02 Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces
• CPC Class Codes: B29C 45/14065 Positioning or centering articles in the mould
• CPC Class Codes: B29K 2705/00 Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
• CPC Class Codes: Y10T 428/24008 including fastener for attaching to external surface

Abstract

A removable, magnetically-affixed mechanical wear element, preferably comprising ultra-high molecular weight polyethylene or polyurethane materials, is provided for affixation to a ferrous substrate material. The mechanical wear element is configured so that the magnetic attachment element is not easily removed or dislodged from the mechanical wear element, without regard to choice of mechanical wear element material utilized.

Claims

1. A mechanical wear element for attachment to one of a ferrous or a magnetic substrate comprising:

a. a mechanical wear element material consisting essentially of non-ferrous material;

b. a plurality of grooves formed within said mechanical wear element material;

c. a plurality of magnets each firmly disposed within one of said grooves; and

d. a ferrous element distinct from the ferrous or magnetic substrate and in contact with at least two of the magnets and embedded within the mechanical wear element material;

whereby the mechanical wear element is movable and may be attached to one of the ferrous or the magnetic substrate and easily repositioned or removed by a user through lifting or prying the mechanical wear element away from the substrate material which is fixed relative to the mechanical wear element.

2. The mechanical wear element of claim 1, wherein said mechanical wear element material comprises ultra-high molecular weight polyethylene.

3. The mechanical wear element of claim 1, wherein said mechanical wear element material comprises polyurethane.

4. The mechanical wear element of claim 1, wherein said plurality of grooves each comprises a slot.

5. The mechanical wear element of claim 1, wherein a shape of each of said plurality of grooves is selected from the group consisting of a T-shaped groove, a dovetail-shaped groove, and a rectangular-shaped groove.

6. The mechanical wear element of claim 1, wherein each of said grooves is less than a thickness of said mechanical wear element material.

7. The mechanical wear element of claim 1, wherein said mechanical wear element material comprises a sheet of material.

8. The mechanical wear element of claim 1, wherein selected ones of said plurality of magnets each comprises a mechanical wear element engaging portion selected from the group consisting of a T-shaped portion, a dovetail-shaped portion, and a rectangular-shaped portion.

9. The mechanical wear element of claim 1, wherein selected ones of said magnets each comprise a sheet like magnet.

17. The mechanical wear element of claim 1 wherein the ferrous element is embedded within said mechanical wear element material such that substantially none of the ferrous element is exposed on an exterior face of the mechanical wear element confronting the substrate when the mechanical wear element is attached thereto.

10. A mechanical wear element for attachment to one of a ferrous or a magnetic substrate comprising:

a. a mechanical wear element material having an exterior face confronting the ferrous or the magnetic substrate when the mechanical wear element is attached thereto;

b. a plurality of magnets each firmly disposed within said mechanical wear element material; and

c. a ferrous element distinct from the ferrous or magnetic substrate and in contact with at least two of the magnets and firmly disposed within said mechanical wear element material;

wherein the ferrous element is embedded within said mechanical wear element material such that substantially none of the ferrous element is exposed on the exterior face of the mechanical wear element;

whereby the mechanical wear element is movable and when attached to one of the ferrous or the magnetic substrate easily repositioned or removed from the substrate which is fixed relative to the mechanical wear element.

11. The mechanical wear element of claim 10, wherein said mechanical wear element material comprises polyurethane.

12. The mechanical wear element of claim 10 comprising one of a mechanical screen, a bar releasably coupled to a rail of a screening machine and a liner.

13. The mechanical wear element of claim 10 wherein the ferrous element is in contact with more than two of the magnetic elements magnets.

14. The mechanical wear element of claim 10 wherein at least one face of each of the magnets is exposed on an exterior surface of the mechanical wear element material.

15. The mechanical wear element of claim 10 wherein the mechanical wear element material is molded around the plurality of magnets and the ferrous element.

16. The mechanical wear element of claim 10 wherein the mechanical wear element material is non-ferrous.