US5085487A — Seat with foamed plastic padding and process for …

Claim 1

Independent Claim 98 words

A seat, in particular, for vehicles with a padding of foamed plastics comprising: a supporting body made from an open-cell elastic plastic foam with a first specific gravity; a flame-resistant upholstery material; said supporting body connected to said upholstering material with a flame-retardant layer made of an open-cell elastic foamed plastic with a second specific gravity different from the first; a non-flammable intermediate layer between said supporting body and said flame-retardant layer, which may be formed by an upholstery material; and said intermediate layer is formed from a lattice or mesh of high temperature resistant fibers or threads.

Claim 2

Dependent Claim 98 words

A seat, in particular, for vehicles with a padding of foamed plastics comprising: a supporting body made from an open-cell elastic plastic foam with a first specific gravity; a flame-resistant upholstery material; said supporting body connected to said upholstering material with a flame-retardant layer made of an open-cell elastic foamed plastic with a second specific gravity different from the first; a non-flammable intermediate layer between said supporting body and said flame-retardant layer, which may be formed by an upholstery material; and said intermediate layer is formed from a lattice or mesh of high temperature resistant fibers or threads.

Claim 3

Dependent Claim 83 words

A seat, in particular, for vehicles, with a padding of foamed plastics comprising: a supporting body made from an open-cell elastic plastic foam with a first specific gravity; a flame-resistant upholstery material; said supporting body connected to said upholstering material with a flame-retardant layer made of an open-cell elastic foamed plastic with a second specific gravity different from the first; a liquid repellant intermediate layer between said supporting body and said flame-retardant layer; and said supporting body being foamed onto said intermediate layer.

Claim 4

Dependent Claim 83 words

A seat, in particular, for vehicles, with a padding of foamed plastics comprising: a supporting body made from an open-cell elastic plastic foam with a first specific gravity; a flame-resistant upholstery material; said supporting body connected to said upholstering material with a flame-retardant layer made of an open-cell elastic foamed plastic with a second specific gravity different from the first; a liquid repellant intermediate layer between said supporting body and said flame-retardant layer; and said supporting body being foamed onto said intermediate layer.

Claim 5

Dependent Claim 26 words

A seat according to claim 1, wherein said intermediate layer is formed by a mesh or knitted material or threads or fibers of a flame-resistant material.

Claim 6

Dependent Claim 19 words

A seat according to claim 1, wherein said intermediate layer is formed by a lattice of threads or fibers.

Claim 7

Dependent Claim 24 words

A seat according to claim 1, wherein a mesh width of the lattices or meshes or knitted material is approximately 0.5 to 8 mm.

Claim 8

Dependent Claim 18 words

A seat according to claim 1, wherein the fibers or threads are comprised of glass or ceramic material.

Claim 9

Dependent Claim 17 words

A seat according to claim 1, wherein the fibers or threads are comprised of metal or carbon.

Claim 10

Dependent Claim 33 words

A seat according to claim 1, wherein the intermediate layer is connected with the supporting body and with the flame-retardant layer in regions distributed over the surface and spaced apart from each other.

Claim 11

Dependent Claim 49 words

A seat according to claim 1, wherein the connection of the supporting body or the intermediate layer or the flame-retardant layer or the upholstery material takes place by means of an adhesive applied in the regions, or by the foaming-on of the supporting body or of the flame-retardant layer.

Claim 12

Dependent Claim 44 words

A seat according to claim 1, wherein the upholstery material is laminated onto the intermediate layer; and a connecting layer comprising a polyether foam or a polyester foam layer is arranged between the upholstery material and the intermediate layer and is glued to these.

Claim 13

Dependent Claim 21 words

A seat according to claim 1, wherein the plastic foam of the supporting body is mixed with a pulverulent flame retardant.

Claim 14

Dependent Claim 15 words

A seat according to claim 1, wherein the supporting body is constructed in one piece.

Claim 15

Dependent Claim 20 words

A seat according to claim 1, wherein the specific gravity of the plastic foam is approximately 15-60 kg/m 3 .

Claim 16

Dependent Claim 33 words

A seat according to claim 1, wherein the intermediate layer has a weight of approximately 150-350 kg/m 2 ; and the flame-retardant layer has a specific gravity of approximately 20-60 kg/m 3 .

Claim 17

Dependent Claim 27 words

A seat according to claim 1, wherein the intermediate layer is formed by a barrier film comprising a PE-film or PU-film with a thickness of 50 μm.

Claim 18

Dependent Claim 52 words

A seat according to claim 1, wherein, said supporting body has recesses; and different cross-sectional slices of the supporting body which are at a distance from each other and run parallel to or perpendicular to an upper face, have an identical thickness, a different weight, and ration between recesses and foamed plastic.

Claim 19

Dependent Claim 58 words

A seat according to claim 1, wherein said supporting body has a lateral face, an opposite lateral face, a rear face and an upper face, and has recesses; and recesses are arranged in the supporting body extending from said lateral face or said rear face thereof in the direction of the opposite lateral face or said upper face.

Claim 20

Dependent Claim 35 words

A seat according to claim 1, wherein said supporting body has thickness, width and contains recesses; and the recesses extend only over a portion of the supporting body thickness or of the supporting body width.

Claim 21

Dependent Claim 20 words

A seat according to claim 18, wherein the recesses are formed as a cylinder or a cone or a pyramid.

Claim 22

Dependent Claim 24 words

A seat according to claim 18, wherein the volume or the depth of the recess is different in differing regions of the supporting body.

Claim 23

Dependent Claim 28 words

A seat according to claim 18, wherein the depth, or the volume, or the number of recesses is less in more intensely stressed regions of said supporting body.

Claim 24

Dependent Claim 27 words

A seat according to claim 18, wherein the supporting body has a region which is a central seat surface in said supporting body used as seat padding.

Claim 25

Dependent Claim 52 words

A seat according to claim 1, wherein the seat is a cushion having a central seat surface and lateral faces and containing recesses; and wherein the depth or the volume or the number of recesses in said seat cushion increases from the central seat surface in the direction of the lateral faces.

Claim 26

Dependent Claim 68 words

A seat according to claim 1, further comprising a seat cushion containing recesses and a back cushion containing recesses; and wherein the number or the volume, or a cross-sectional face of the recesses parallel to the upper face of the seat cushion or back cushion is greater in the regions of the back cushion and the seat cushion, which face each other, than in the remaining regions thereof.

Claim 27

Dependent Claim 25 words

A seat according to claim 24, wherein the recesses are arranged in the regions of the seat cushion and back cushion, which face each other.

Claim 28

Dependent Claim 51 words

A seat according to claim 25, wherein said seat cushion has seat padding and said back cushion has back padding; and wherein these regions extend over approximately 30% of a length of the seat padding or respectively back padding running perpendicular to the back cushion or respectively to the seat cushion.

Claim 29

Dependent Claim 17 words

A seat according to claim 24, wherein the recesses extend into the region of the intermediate layer.

Claim 30

Dependent Claim 21 words

A seat according to claim 27, wherein the intermediate layer is provided with an opening in the region of the recess.

Claim 31

Dependent Claim 48 words

A seat according to claim 1, further comprising recesses, open cells in the flame-retardant layer, and openings in the intermediate layer; and wherein an interior of the recesses is connected directly with an interior of open cells of the flame-retardant layer via the openings in the intermediate layer.

Claim 32

Dependent Claim 33 words

A seat according to claim 29, wherein a cross-sectional face of the opening in the intermediate layer corresponds to a cross-section of the recess in the region immediately adjacent to the intermediate layer.

Claim 33

Dependent Claim 41 words

A seat according to claim 29, wherein the flame-retardant layer and a flame-resistant upholstery material arranged in front of it, are provided with bores having a cross-section of 0.5 to 5 mm, which open out into the interior of the recesses.

Claim 34

Dependent Claim 42 words

A seat according to claim 1, wherein the supporting body has a more intensely stressed zone; and in the supporting body in the region of the more intensely stresses zone, a supporting body comprising a spring metal core is contained by foam.

Claim 35

Dependent Claim 37 words

A seat according to claim 32, wherein the spring core has a base face; and said base face of the spring core is arranged so as to be approximately flush with an underside of the supporting body.

Claim 36

Dependent Claim 43 words

A seat according to claim 33, wherein the spring core has a cover face; and said cover face of the spring core is arranged spaced apart from an upper side of the supporting body at a distance of from 5 to 70 mm.

Claim 37

Dependent Claim 43 words

A seat according to claim 34, wherein the spring core has a height and a thickness; and said height of the spring core which is formed into the supporting body is less than the thickness of the spring core in the unstressed state.

Claim 38

Dependent Claim 56 words

A seat according to claim 35, further comprising tensioning elements; and wherein the base face and the cover face of the spring core are spaced apart from each other by said tensioning elements, the length of which running perpendicular to the base face is less than the thickness of the spring core in the unstressed state.

Claim 39

Dependent Claim 41 words

A seat according to claim 36, wherein said spring core has end face edges; and said end face edges of the spring core are arranged at a distance from the lateral faces and a rear end face of the supporting body.

Claim 40

Dependent Claim 30 words

A seat according to claim 37, wherein in the region of the spring core recesses are arranged running perpendicular to a lateral face or upper face of the seat cushion.

Claim 41

Dependent Claim 29 words

A seat according to claim 38, wherein an upper face of the recesses is arranged at a distance from the spring core or from parts of the spring core.

Claim 42

Dependent Claim 43 words

A seat according to claim 39, wherein in the supporting body between the lateral edges of the spring core and the lateral faces of the supporting body, recesses are arranged running vertically to the upper face or lateral face of the supporting cushion.

Claim 43

Dependent Claim 38 words

A seat according to claim 1, further comprising recesses; and wherein the intermediate layer or flame-retardant layer covers an inlet opening of the recesses in the region of the lateral face or rear face of the supporting body.

Claim 44

Dependent Claim 22 words

A seat according to claim 41, wherein an upper face of the recesses is lined with the intermediate layer or flame-retardant layer.

Claim 45

Dependent Claim 19 words

A seat according to claim 42, wherein an upper face of the recesses is coated with a flame-retardant layer.

Claim 46

Dependent Claim 28 words

A seat according to claim 1, further comprising a connecting device arranged between the flame-retardant layer and an upholstery material, and is directly connected with the intermediate layer.

Claim 47

Dependent Claim 37 words

A seat according to claim 44, wherein the connecting device is connected with the intermediate layer and with the flame-retardant layer in regions distributed over the surface of the connecting device and spaced apart from each other.

Claim 48

Dependent Claim 32 words

A seat according to claim 44, wherein the connecting device for the mounting of the upholstery material is connected with the intermediate layer by threads or fibers which penetrate the flame-retardant layer.

Claim 49

Dependent Claim 31 words

A seat according to claim 44, wherein the connecting device for the mounting of the upholstery material is connected with the intermediate layer by an adhesive layer penetrating the flame-retardant layer.

Claim 50

Dependent Claim 32 words

A seat according to claim 44, wherein the connecting device is connected with the flame-retardant layer by an adhesive in regions at a distance from the adhesive layers and from each other.

Claim 51

Dependent Claim 17 words

A seat according to claim 48, wherein the adhesive of the adhesive layer remains elastic after hardening.

Claim 52

Dependent Claim 14 words

A seat according to claim 48, wherein the adhesive has a short hardening time.

Claim 53

Dependent Claim 27 words

A seat according to claim 48, wherein in the region of the adhesive layer or of the threads, the flame-retardant layer is compacted to a smaller thickness.

Claim 54

Dependent Claim 29 words

A seat according to claim 48, wherein the adhesive for the adhesive layer is injected into the flame-retardant layer in the regions which are spaced apart from each other.

Claim 55

Dependent Claim 24 words

A seat according to claim 44, wherein the connecting device is formed by a burred tape or a supporting tape for a zip fastener.

Claim 56

Dependent Claim 27 words

A seat according to claim 1, wherein between the flame-retardant layer and the flame-resistant upholstery material, a further layer of flame-resistant upholstery material is arranged in places.

Claim 57

Dependent Claim 20 words

A seat according to claim 54, wherein the further layer of flame-resistant upholstery material is glued onto the flame-retardant layer.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-02-03	1995-08-05	1996-02-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-02-03	1999-08-05	2000-02-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-02-03	2003-08-05	2004-02-04	$7700.00	Window Closed / Lapsed

Seat with foamed plastic padding and process for its manufacture

Abstract

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