A cushioning device as in a pillow that has a main-body foam which a plurality of projections extend off a surface of the main-body. The projections are arranged in different support characteristic groupings such as rows of different volume or sized projections (e.g., cylindrical, cubical, prismati
A cushioning device as in a pillow that has a main-body foam which a plurality of projections extend off a surface of the main-body. The projections are arranged in different support characteristic groupings such as rows of different volume or sized projections (e.g., cylindrical, cubical, prismatic, etc.) spaced out over a surface (e.g., convex surface) of the pillow (one or more surface sections as in upper surface sections and front edge surface section). There is also preferably provided a neck support ridge extension. The cylindrical projections are arranged such that a greater number of smaller volume, width or diameter, etc. rows of projections are centrally positioned on the surface and with the larger volume, width, or diameter, etc. projections laterally outward of the more centrally positioned projections, and with the ridge extension preferably extending along a front edge (e.g., commensurate with the extreme front edge surface or to some extent back in a front edge region of the front edge) of the pillow for a full length of the pillow.
대표청구항▼
What is claimed is: 1. A pillow, comprising: a foam main-body, a plurality of foam projections extending off of said foam main-body, said projections being arranged in a laterally central support characteristic zone, an edge support characteristic zone, and at least one laterally intermediate suppo
What is claimed is: 1. A pillow, comprising: a foam main-body, a plurality of foam projections extending off of said foam main-body, said projections being arranged in a laterally central support characteristic zone, an edge support characteristic zone, and at least one laterally intermediate support characteristic zone positioned laterally between said central support characteristic zone and said edge support characteristic zone, and said edge support characteristic zone including a ridge extension, and said at least one intermediate support characteristic zone being comprised of a plurality of independent projections having a lateral width greater than height extension off a supporting upper surface of said main-body, and wherein said ridge extension continuously extends longitudinally across a plurality of said independent projections in said at least one intermediate support characteristic zone, and said independent projections in said at least one intermediate support zone are laterally spaced from said ridge extension by a longitudinally extending exposed region of the upper surface of said main-body, and said central, edge and laterally intermediate support characteristic zones define different support characteristic zones, and wherein said pillow has a maximum height in a central support characteristic zone of said pillow, and said pillow is formed as a monolithic, visco-elastic foam body. 2. The pillow of claim 1, wherein said pillow includes a first row of cylindrical foam projections in said central support characteristic zone and a second row of cylindrical foam projections in said at lest one intermediate support characteristic zone and top surfaces of the cylindrical projections in the first row have a smaller radius than that of top surfaces of the cylindrical projections in the second row. 3. The pillow of claim 1 wherein said central support characteristic zone includes a first group of projections that include multiple rows of a first size projection and said at least one intermediate support characteristic zone includes a second group of projections that includes a row of a second size projection. 4. The pillow of claim 3 wherein said first group of multiple rows of projections include a pair of laterally spread apart longitudinally extending rows of projections in a central region of the upper surface of said foam main-body, and wherein there is a pair of said intermediate support characteristic zones each comprising a set of said second group projections, with each set comprising longitudinally extending row of projections positioned to opposite lateral sides of the pair of the longitudinally extending rows of the projections of said first group in the central support characteristic zone. 5. The pillow of claim 4 wherein the projections of said first group are smaller in volume than the projections of said second group. 6. The pillow of claim 5 wherein the projections within said first group are of a common size and configuration within said first group, and wherein the projections within said second group are of a common size and configuration within each set of said second group of projections. 7. The pillow of claim 6 wherein said projections in each of said first and second groups are cylindrical projections. 8. The pillow of claim 1 wherein said main-body and projections are formed of a visco-elastic foam material having a density range of 2.0 to 3.0 pounds per cubic foot (pcf). 9. The pillow of claim 8 wherein said projections of said first group and said projections of said second group are of a common general shape. 10. The pillow of claim 1, wherein said upper surface of said main-body has a convex curvature which defines the maximum height central support characteristic zone of said pillow. 11. The pillow of claim 10 wherein said convex curvature extends in a lateral direction fully between front and rear longitudinal edges of said pillow. 12. The pillow of claim 11 wherein said central support characteristic zone includes a plurality of projections within a first group that include cylindrical projections, and said intermediate support characteristic zone includes a plurality of projections of a second group that includes cylindrical projections that are laterally external to said first group of projections and are of a larger radius than cylindrical projections in said first group. 13. The pillow of claim 1 wherein the projections have a lateral direction width that is greater than a corresponding projection height. 14. The pillow of claim 1 wherein said central support characteristic zone is less firm in support than said intermediate support characteristic zone. 15. The pillow of claim 1, wherein said projections of said intermediate support characteristic zone have a greater lateral width than that of said ridge extension. 16. The pillow of claim 1, wherein an upper surface of said projections of said intermediate support characteristic zone is at a pillow height level higher than an uppermost surface of said ridge extension. 17. The pillow of claim 1, wherein all projections are independent projections that are separated by exposed regions of an upper surface of said main-body, and wherein there is a longitudinally extending exposed region extending for a length commensurate with said ridge extension, and said longitudinally extending exposed region is positioned between said ridge extension and an adjacent most row of said independent projections of said intermediate support characteristic zone. 18. A pillow, comprising: a main-body, projections arranged in a plurality of rows and extending off said main-body, and said projections including a first type of projection having a first support characteristic, a second type of projection having a second support characteristic different than said first support characteristic and a third projection type, with said first, second and third projection types being arranged on said main-body to define first, second and third different support characteristic zones, and said first and second types of projections are isolated from one another within each respective zone so as to expose regions of the main-body which extend along respective projection base-to-main-bogy contact edging, wherein said first and second projection types have a density range of foam forming said first and second projection types of 2.0 to 3.0 pounds per cubic foot (pcf) and wherein said first projection type is more centrally positioned than said second projection type, and wherein said third projection type includes a ridge extension extending along a forward or front longitudinal edge of said main-body past a plurality of projections in an adjacent row, and said ridge extension being uninterrupted over the longitudinal length of extension, and wherein said main-body and projections are formed of a common foam material to provide a monolithic foam pillow, and wherein said first and second projection types have upper exposed contact surfacing with portions of said exposed contact surfacing defining different respective height support levels in said first and second support characteristic zones. 19. The pillow of claim 18 wherein said first type of projection includes laterally spaced apart longitudinally extending rows of projections and said second type of projections includes a longitudinally extending row of projections, and wherein said first and second projection types have compression force deflection (CFD) values of 0.35 to 0.55 lbs and 0.60 to 0.80 lbs to compress said projection types 50%, respectively. 20. The pillow of claim 19 wherein said third projection type further comprises a second longitudinally extending ridge extension. 21. The pillow of claim 20 wherein said first, second and third projection types are arranged laterally in a sequence of first ridge extension, first longitudinal row of second type projection, pair of longitudinal rows of first type projections, second longitudinal row of second type projections and second ridge extension. 22. The pillow of claim 18 whereas said pillow has a symmetric relationship with respect to projection types about a centrally located longitudinal cross-section line. 23. The pillow of claim 18 wherein said first projection type includes cylindrical projections and said second projection type includes cylindrical projections less centrally positioned than the projection of the first projection type, and wherein the projection of said first projection type are smaller in radius and greater in number per longitudinal row than the cylindrical projections of said second projection type. 24. The pillow of claim 18, wherein: said projections and ridge extension are spaced apart to define exposed regions in the upper surface of said main-body and are in an arrangement that provides for molding of a final configuration molded pillow, and wherein said ridge is uninterrupted and extends longitudinally across a complete front edge of said main-body and there is a longitudinally extending exposed region extending between said ridge extension and an adjacent most row of projections of said second type of projection, and which longitudinally extending exposed region extends in a longitudinal length commensurate with that of said ridge extension. 25. The foam pillow of claim 18, wherein: said main-body has a longitudinal length and a lateral width and a convex upper surface, and a plurality of said projections extend up off said convex upper surface, and wherein said plurality of projections extending off of said main-body are independent projections that are isolated from one another relative to an underlying and supporting exposed main-body surface and thus free from contact with each other. 26. The pillow of claim 18 wherein said pillow has a generally rectangular outline with laterally spaced forward and rearward edging, and the exposed portion of the upper surface of said main-body within the generally rectangular outline occupies about 10 to 30% of the area of the generally rectangular outline. 27. The pillow of claim 18 wherein said pillow is a monolithic solid block of viscoelastic material. 28. The pillow of claim 18, wherein all projections extending off said main-body extend off an upper surface of said main-body such that said exposed regions are provided on said upper surface and said exposed regions represent 10 to 30% of the upper surface of said pillow, and said exposed regions including a longitudinally extending exposed region located between an internal edge of said ridge extension and an adjacent most row of projections of said second type. 29. The pillow of claim 18 wherein the lateral extension length of said ridge extension is less than that of projections in an adjacent most row of projections of said second type. 30. The pillow of claim 18 wherein said ridge extension has a maximum height upper surface that lies below a maximum height upper surface of projections of said second type. 31. The pillow of claim 18 wherein said ridge extension has an exterior side surface that curves inward in a direction toward said intermediate support zone. 32. The pillow of claim 18, wherein said first support characteristic zone defines a higher exposed contact surfacing level than that of said second support characteristic zone. 33. A head pillow, comprising: a main-body having an upper surface; a plurality of projections extending upwardly off the upper surface of said main-body and arranged in different support zones, with said support zones having different support characteristics with respect to each other, and said support zones including a central support zone arranged in a central region located between a front edge of the pillow and a rear edge of the pillow, an edge ridge support zone extending continuously along a front edge of said pillow and comprising a ridge extension projection having an inward ridge portion extending up off from the upper surface of the main-body, and said head pillow further comprising a laterally intermediate support zone which includes a longitudinal series of projections that are positioned laterally between said central support zone and said edge ridge support zone, and wherein said inward ridge portion is laterally separated from said longitudinal series of projections in said intermediate support zone by an exposed, longitudinally extending portion of the upper surface of said main-body, and wherein said inward ridge portion extends uninterrupted across a plurality of projections in said longitudinal series of projections, and said head pillow is formed of a solid, common block of viscoelastic foam so as to provide a monolithic, viscoelastic head pillow, said projections of said central and intermediate support zones presenting different respective height contact support levels in said central and intermediate support zones. 34. The head pillow of claim 33 wherein said longitudinal series of projections include projections having a lateral width greater than that of said ridge extension projection. 35. The head pillow of claim 33 wherein said central support zone includes a plurality of projections that have a smaller lateral width than that of projections in said intermediate support zone and which are arranged in longitudinal rows of greater projection number than a longitudinal row of said projections in said intermediate support zone. 36. The head pillow of claim 33 wherein said projections are designed in height and material such that some of said projections are completely absorbed into said main-body due to user head contact and other projections or projection portions contacting the user head remain extended above said upper surface to promote air circulation in the monolithic foam head pillow. 37. The pillow of claim 18 wherein said ridge extension has an exterior side surface that curves inward in a direction toward said intermediate support zone. 38. A head pillow comprising: a main-body having an upper surface; a plurality of projections extending upwardly off the upper surface of said main-body and arranged in different support zones, with said support zones having different support characteristics with respect to each other and said support zones including a central support zone arranged in a central region located between a front edge of the pillow and a rear edge of the pillow, an edge ridge support zone extending continuously along a front edge of said pillow and comprising a ridge extension projection having an inward ridge portion extending up off from the upper surface of the main-body, and said head pillow further comprising a laterally intermediate support zone which includes a longitudinal series of projections that are positioned laterally between said central support zone and said edge ridge support zone, and wherein said inward ridge portion is laterally separated from said longitudinal series of projections in said intermediate support zone by an exposed, longitudinally extending portion of the upper surface of said main-body, and wherein said inward ridge portion extends uninterrupted across a plurality of projections in said longitudinal series of projections, and said head pillow is formed of a solid, common block of viscoelastic foam so as to provide a monolithic, viscoelastic head pillow, and wherein a maximum height head contact surface of said ridge extension lies below a maximum height head contact surface presented by said longitudinal series of projections in said intermediate support zone.
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이 특허에 인용된 특허 (28)
Gunnar Bretvin NO, Air cushion for pressure relief and control.
Spann Donald C. (Greenville SC) Schaefer Daniel J. (Greenville SC) Krouskop Thomas A. (Stafford TX), Multi-section mattress overlay for systematized pressure dispersion.
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