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US 7,819,480 B2Granted
Two-piece head restraint and method for making same
AssigneeMagna International Inc.
InventorsJames Daniel Asbury, Timothy F. O'Brien, Hanspeter Glatt
Life of this patent
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Abstract
A head restraint comprising a first core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior, a first outer layer provided about at least a region of said exterior surface of said first core portion, a second core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior, and a second outer layer provided about at least a region of said exterior surface of said second core portion, wherein at least a region of the perimeter edge of the first core portion is attached to at least a region of the perimeter edge of the second core portion to define a perimeter seam therebetween.
Claims21
A head restraint, comprising:
- a first core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior;
- a first outer layer provided about at least a region of said exterior surface of said first core portion;
- a second core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior;
- and
- a second outer layer provided about at least a region of said exterior surface of said second core portion, wherein material defining at least a region of the perimeter edge of the first core portion is directly attached to material defining at least a region of the perimeter edge of the second core portion, wherein an edge of the first outer layer is directly attached to an edge of the second outer layer to define a perimeter seam therebetween, wherein the first outer layer is a cover wrapped around the perimeter edge of the first core portion and toward the interior of the first core portion, and wherein the second outer layer is a cover wrapped around the perimeter edge of the second core portion and toward the interior of the second core portion such that the perimeter seam is defined between the first outer layer and the second outer layer, and further wherein the perimeter edge of the first core portion is bonded to the perimeter edge of the second core portion, and even further wherein the first and second core portions define a unitary structure formed entirely of expanded polypropylene;
- wherein the first core portion includes a secondary edge disposed radially inward from said perimeter edge of the first core portion to define an opening, and wherein the second core portion includes a secondary edge disposed radially inward from said perimeter edge of the second core portion to define an opening, and further wherein the opening of the first core portion and the opening of the second core portion are aligned to define an opening through the head restraint, and still further wherein at least a region of the secondary edge of the first core portion and the secondary edge of the second portion define a secondary seam.
3 more elements
A method for manufacturing a head restraint, the method comprising:
- defining first and second core portions from polypropylene, each of said portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior;
- covering at least a region of said exterior surface of said first core portion with a first outer layer;
- covering at least a region of said exterior surface of said second core portion with a second outer layer;
- directly attaching material defining at least a region of the perimeter edge of the first core portion to material defining at least a region of the perimeter edge of the second core portion;
- directly attaching an edge of the first outer layer to an edge of the second outer layer to define a perimeter seam therebetween
- wrapping the first outer layer around the perimeter edge of the first core portion toward the interior of the first core portion;
- and
- wrapping the second outer layer around the perimeter edge of the second core portion toward the interior of the second core portion such that the perimeter seam is defined between the first outer layer and the second outer layer prior to the first and second core portions becoming fully cured, depositing a post about the interior of the at least one of the core portions;
- aligning at least a region of the perimeter edge of the first core portion to at least a region of the perimeter edge of the second core portion to define the perimeter seam therebetween;
- and
- applying pressure between the first core portion and the second core portions to bond at least a region of the perimeter edge of the first core portion with at least a region of the perimeter edge of the second core portion to define the perimeter seam therebetween whereby the first core portion and the second core portion define a unitary structure formed entirely of polypropylene.
8 more elements
A head restraint, comprising:
- a first core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior;
- a first outer layer provided about at least a region of said exterior surface of said first core portion;
- a second core portion including an exterior surface, an interior and a perimeter edge between the exterior surface and the interior;
- and
- a second outer layer provided about at least a region of said exterior surface of said second core portion, wherein material defining at least a region of the perimeter edge of the first core portion is directly attached to material defining at least a region of the perimeter edge of the second core portion, wherein an edge of the first outer layer is directly attached to an edge of the second outer layer to define a perimeter seam therebetween, wherein the first outer layer is a cover wrapped around the perimeter edge of the first core portion and toward the interior of the first core portion, and wherein the second outer layer is a cover wrapped around the perimeter edge of the second core portion and toward the interior of the second core portion such that the perimeter seam is defined between the first outer layer and the second outer layer, and further wherein the perimeter edge of the first core portion is bonded to the perimeter edge of the second core portion, and even further wherein the first and second core portions define a unitary structure formed entirely of expanded polypropylene;
- and
- a head restraint post extending from one or both of said first core portion and said second core portion.
4 more elements
Dependencies are inferred from the claim text.