Resilient and compressible magnet module for door channel installation

• US 5,844,458 A
• Filed: 04/08/1997
• Issued: 12/01/1998
• Est. Priority Date: 04/08/1997
• Status: Expired due to Term

• Current Assignee: GE Security Incorporated (Carrier Global Corporation)
• Original Assignee: SLC Technologies, Inc. (General Electric Company)
• Inventors: Bartholomew, Victor L., Taft, Mark S.
• Primary Examiner(s): DONOVAN, LINCOLN D
• Application Number:
  US08/824,683
• Time in Patent Office: 602 Days
• Field of Search: 335/205-7, 335/302, 340/587, 340/686
• US Class Current: 335/205
• CPC Class Codes: H01H 36/0033 Mountings; Housings; Connections

Abstract

A resilient and compressible door channel magnet module facilitates the installation of a door channel magnet. The module comprises a magnet set supported inside a magnet holder that is connected to a flexible and deformable outer ring by a set of elongate web members. To install, the module is compressed, positioned in the door channel, and released. The pressure of the module against the walls of the door channel retains the module in position. A preferred module includes a rare earth magnet backed with a ceramic magnet for producing the requisite magnetic field strength at less cost than a sole rare earth magnet of equal magnetic field strength.

Claims

1. A resilient and compressible magnet module configured to conformably fit within a support structure channel having an interior region with an interior surface, comprising:

a magnet;

a magnet holder disposed about and supporting the magnet;

a plurality of resilient elongate web members, each having a proximal end attached to the magnet holder and extending outwardly therefrom and having a distal end opposed to the proximal end; and

a flexible and deformable outer ring member attached to the distal ends of the resilient elongate web members, the outer ring member having an outer surface and being dimensioned to change its shape in response to an externally applied compressive force against the outer surface of the outer ring member so that the magnet module can conformably fit in any one of multiple possible orientations of the outer surface of the outer ring member within the interior region of the support structure channel and after removal of the externally applied compressive force the magnet module remains retained in place under compression by pressure contact of the outer surface of the outer ring member against the interior surface of the support structure channel.

2. The magnet module of claim 1, in which the plurality of resilient elongate web members includes exactly two resilient elongate web members.

3. The magnet module of claim 1, in which the resilient elongate web members are curved.

4. The magnet module of claim 3, in which the curved resilient elongate web members are S-shaped.

5. The magnet module of claim 1, in which the resilient elongate web members interconnect the magnet holder and the flexible and deformable outer ring member so that the magnet remains centered within the flexible and deformable outer ring member when it is compressed.

10. The magnet module of claim 1, in which the flexible and deformable outer ring members completely encircles the magnet holder and has an inner surface, to which the distal ends of the resilient elongate web members are attached.

11. The magnet module of claim 10, in which the flexible and deformable outer ring member assumes an elliptical shape in the absence of the externally applied compressive force.

12. The magnet module of claim 10, in which there is an open space between the magnet holder and the inner surface of the flexible and deformable outer ring member in the absence of the externally applied compressive force.

13. The magnet module of claim 1, in which the interior surface of the interior region has a bottom surface portion, and further comprising multiple legs attached to the outer ring member and extending in a transverse direction from its outer surface so that when the magnet module is placed in the support structure channel the multiple legs position the magnet holder a distance away from the bottom surface portion.

14. The magnet module of claim 1, in which the magnet comprises a rare earth magnet.

15. The magnet module of claim 14, in which the rare earth magnet includes neodymium.

6. A flexible magnet module configured to conformably fit with a support structure channel, the module having a top for facing outwardly from the support structure and a bottom, opposed to the top and comprising:

a rare earth magnet having a surface;

magnetic material placed adjacent to the surface of the magnet;

a magnet holder disposed about and supporting the magnet and the magnetic material;

a plurality of elongate web members, each having a proximal end attached to the magnet holder and extending outwardly therefrom and having a distal end opposed to the proximal end; and

a flexible and deformable outer ring member attached to the distal ends of the resilient elongate web members, the outer ring member having an outer surface and being dimensioned to change its shape in response to an externally applied compressive force against the outer surface of the outer ring member so that the magnet module can conformably fit in any one of multiple possible orientations of the outer surface of the outer ring member within the interior region of the support structure channel and after removal of the externally applied compressive force remains retained in place under compression by pressure contact of the outer surface of the outer ring member against the interior surface of the support structure channel.

7. The magnet module of claim 6 in which the magnetic material is comprised of a ceramic magnet.

8. The magnet module of claim 6 in which the magnetic material is comprised of a magnetically soft material.

9. The magnet module of claim 6 in which the rare earth magnet is comprised of neodymium.

16. The magnet module of claim 8, in which the magnetically soft material includes steel.