Magnetically secured display apparatus
First Claim
1. Display apparatus for magnetic securement to a ferromagnetic or paramagnetic object having a smooth surface in lateral displacement resistive relationship thereto, said apparatus comprising a support structure constituted by a sheet of self-supporting material, a display surface presented at the front face of said sheet, magnet means carried at a rear face of said sheet and positioned for developing a force of magnetic attraction to said object with said display surface presented for display purposes, said magnet means comprising a plurality of permanent magnets and means supporting said permanent magnets while permitting movement of said permanent magnets relative to said sheet to permit conformal adapsance and adherence of said permanent magnets to said smooth surface regardless of surface curvature or irregularity, said apparatus including a layer of elastomeric material associated with said magnet means and adapted for being interposed between said magnet means and said object surface with an area of said material maintained in contact with said surface by force of magnetic attraction of said magnet, said material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said area of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said apparatus from moving laterally across said surface in response to high forces tending to laterally displace said apparatus.
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Accused Products
Abstract
Display apparatus for magnetic securement to a smooth surface of a ferromagnetic or paramagnetic object comprises a support structure and a display surface carried by said support structure, the apparatus having a magnetic arrangement including a magnet carried by said support structure positioned for developing a force of magnetic attraction to said object with said display surface presented for display purposes. The apparatus includes a layer of elastomeric material associated with the magnet and adapted for being interposed between the magnet and the object surface with an area of the material maintained in contact with the surface by force of magnetic attraction. The material is selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber. The area of such material in contact with the object surface develops high intrinsic lateral adherence to such surface for preventing the apparatus from moving laterally across the surface in response to high forces tending to laterally displace the apparatus. The apparatus, accordingly, makes synergistic use of both magnetic forces and peculiar characteristics of the elastomeric material to achieve unexpectedly high lateral adherence.
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Citations
25 Claims
- 1. Display apparatus for magnetic securement to a ferromagnetic or paramagnetic object having a smooth surface in lateral displacement resistive relationship thereto, said apparatus comprising a support structure constituted by a sheet of self-supporting material, a display surface presented at the front face of said sheet, magnet means carried at a rear face of said sheet and positioned for developing a force of magnetic attraction to said object with said display surface presented for display purposes, said magnet means comprising a plurality of permanent magnets and means supporting said permanent magnets while permitting movement of said permanent magnets relative to said sheet to permit conformal adapsance and adherence of said permanent magnets to said smooth surface regardless of surface curvature or irregularity, said apparatus including a layer of elastomeric material associated with said magnet means and adapted for being interposed between said magnet means and said object surface with an area of said material maintained in contact with said surface by force of magnetic attraction of said magnet, said material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said area of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said apparatus from moving laterally across said surface in response to high forces tending to laterally displace said apparatus.
- 6. Display apparatus for magnetic securement to a ferromagnetic or paramagnetic object having a smooth surface in lateral displacement resistive relationship thereto, said apparatus comprising a support structure constituted by a sheet of self-supporting material, a display surface presented at the front face of said sheet, magnetic means carred at a rear face of said sheet and positioned for developing a force of magnetic attraction to said object with said display surface presented for display purposes, said magnetic means comprising a plurality of permanent magnets and means supporting said permanent magnets while permitting movement of said permanent magnets relative to said sheet to permit conformal adapsance and adherence of said permanent magnets to said smooth surface regardless of surface curvature or irregularity, said apparatus including a layer of elastomeric material associated with said magnetic means and adapted for being interposed between said magnetic means, said sheet of self-supporting material comprising a plurality of apertures, said magnets being located within a corresponding aperture, each magnet being supported relative to said aperture by said elastomeric material, said elastomeric material layer having a face for contacting said surface and an opposite face, each magnet being secured to said opposite face, said layer having magnetized portions extending beyond the respective magnet and secured to said sheet, and said object surface with an area of said material maintained in contact with said surface by force of magnetic attraction of said magnet, said material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said area of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said apparatus from moving laterally across said surface in response to high forces tending to laterally displace said apparatus.
- 10. A display board for magnetic securement to the smooth surface of an object of ferromagnetic or paramagnetic material in lateral displacement resistive relationship thereto, said display board comprising a sheet of self-supporting material having a front face for display purposes and a rear face for placement adjacent said surface, a plurality of permanent magnets, a layer of elastomeric material associated with each said magnet and adapted for having areas thereof maintained in contact with said surface by said magnets, means for supporting each of said permanent magnets relative to said rear face to permit movement of each of said magnets relative to said sheet for conformal adaptance and adherence of each of said magnets to said smooth surface, said elastomeric material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said areas of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said display board from moving laterally across said surface in response to high forces tending to laterally displace said display board regardless of curvature or irregularity of said smooth surface relative to said sheet.
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25. A display board for magnetic securement to the smooth surface of an object of ferromagnetic or paramagnetic material in lateral displacement resistive relationship thereto, said display board comprising a sheet of self-supporting material having a front face for display purposes and a rear face for placement adjacent said surface, a plurality of permanent magnets, a layer of elastomeric material associated with each said magnet and adapted for having areas thereof maintained in contact with said surface by said magnets, means for supporting each of said permanent magnets relative to said rear face to permit movement of each of said magnets relative to said sheet for conformal adaptance and adherence of each of said magnets to said smooth surface, said magnets each having a magnetic face secured to said elastomeric material for movement of said magnets within said apertures, said elastomeric material having marginal portions extending in sheet-wise directions beyond the periphery of said aperture, said supporting means being instituted by securements of said marginal portions to said rear face, said elastomeric material being selected from the group consisting of plasticized polyvinyl chloride, plasticized polyvinyl acetals, and vulcanizing silicone rubber, said areas of material magnetically maintained in contact with said object surface developing high intrinsic lateral adherence to said object surface for preventing said display board from moving laterally across said surface in response to high forces tending to laterally displace said display board regardless of curvature or irregularity of said smooth surface relative to said sheet.
Specification