Vehicle seat cushion

• US 5,632,053 A
• Filed: 05/28/1996
• Issued: 05/27/1997
• Est. Priority Date: 04/22/1991
• Status: Expired due to Term

• Current Assignee: CA Greiner & Sohne GmbH
• Original Assignee: CA Greiner & Sohne GmbH
• Inventors: Moseneder, Johann, Weingartner, Rudolf
• Primary Examiner(s): Saether, Flemming
• Application Number:
  US08/653,995
• Time in Patent Office: 364 Days
• Field of Search: 5/737, 5/738, 5/655.9, 5/740, 5/698, 5/483, 5/653, 5/922, 5/923, 297/DIG. 5, 297/DIG. 6, 297/452.27, 297/452.62, 297/218.2, 297/228.1
• US Class Current: 5/655.9
• CPC Class Codes: A47C 27/00 Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
• CPC Class Codes: A47C 7/20 with reinforcement in the foam layer
• CPC Class Codes: A47C 7/26 with reinforcement of the external layer of the upholstery, e.g. vandal resistant
• CPC Class Codes: B60N 2/242 Bus seats
• CPC Class Codes: B64D 11/0647 Seats characterised by special upholstery or cushioning features
• CPC Class Codes: D04B 1/22 specially adapted for knitting goods of particular configuration
• CPC Class Codes: D04B 21/14 Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes pile fabrics D04B21/02; non-woven fabrics in general D04H
• CPC Class Codes: D10B 2505/08 Upholstery, mattresses
• CPC Class Codes: Y02T 50/40 Weight reduction
• CPC Class Codes: Y10S 297/05 Fireproof
• CPC Class Codes: Y10S 297/06 Hook and loop type fastener
• CPC Class Codes: Y10S 297/07 Rocker/recliner
• CPC Class Codes: Y10S 428/902 High modulus filament or fiber
• CPC Class Codes: Y10S 428/92 Fire or heat protection feature
• CPC Class Codes: Y10S 5/922 with hook and loop type fastener

Abstract

An aircraft seat cushion comprises a foamed plastic supporting body consisting of a lower supporting part, an upper sitting part, the lower sitting part being detachable from the supper surface of the supporting part, and a detachable flameproofing layer covering the upper surface of the sitting part and the edges of the sitting and supporting parts, and a flameproof layer covering the entire lower surface of the supporting part so that the cushion is encapsulated in the flameproof layers.

Claims

1. An aircraft seat cushion comprising

(a) a supporting body of foamed plastic material, the supporting body consisting of

(1) a lower supporting part having lateral, front and rear edges, and upper and lower surfaces extending therebetween,

(2) an upper sitting part having lateral, front and rear edges, an upper surface remote from the supporting part and a lower surface in contact with the upper surface of the supporting part, the upper and lower surfaces extending between the edges,

(3) the lower surface of the sitting part being detachable from the upper surface of the supporting part, and

(4) detachable first flameproofing fabric layer means covering the upper surface of the sitting part and the edges of the sitting and supporting parts, and a second flexible flameproof covering material covering the entire lower surface of the supporting part whereby the entire cushion is encapsulated by the first flameproofing fabric layer means and the second flexible flameproof covering material, and the first flameproofing fabric layer means being detachably connected to the second flexible flameproof covering material.

2. The seat cushion of claim 1, wherein the supporting and sitting parts are made of open-celled foamed plastic materials of different densities, the density of the plastic material of the sitting part being less than that of the plastic material of the supporting part.

3. The seat cushion of claim 1, wherein the supporting part is comprised of a plurality of vertically extending regions of different foamed plastic materials.

4. The aircraft seat cushion of claim 1, wherein the second flexible flameproof covering material also covers the edges of the supporting part.

5. The aircraft seat cushion of claim 4, further comprising burred closure means detachably attaching the first flameproofing layer means to the second flexible flameproof covering material at the edges of the supporting part.

6. The aircraft seat cushion of claim 1 wherein the second flexible flameproof covering material also covers the edges of the supporting and sitting parts.

7. The aircraft seat cushion of claim 1, further comprising burred closure means detachably attaching the first flameproofing layer means to the second flexible flameproof covering material at the lower surface of the supporting part.

8. The aircraft seat cushion of claim 1, wherein the flameproofing layer means comprises a plurality of layers including an intermediate layer and a covering material.

9. The aircraft seat cushion of claim 8, wherein the covering material is elastically deformable.

10. The aircraft seat cushion of claim 8, wherein one of the layers comprises a flame-retardant foamed plastic material, the intermediate layer is arranged between the supporting body and the flame-retardant foamed plastic material, the intermediate layer being comprised of a high temperature resistant material selected from fibers and threads.

11. The aircraft seat cushion of claim 8, wherein the intermediate layer and the covering material overlap the lower surface of the supporting part and are detachably attached thereto.

12. The aircraft seat cushion of claim 1, wherein the supporting body has a region subject to particular stress during use between the upper and lower surfaces, further comprising a supporting device embedded in, and surrounded by, the foamed plastic material in said region, the supporting device having

(a) an upper face facing, and spaced from, the upper planar surface,

(b) a base facing, and spaced from, the lower planar surface, and

(c) lateral, front and rear edges spaced from the edges of the supporting body, the upper and base faces extending between the edges.

13. The seat cushion of claim 12, wherein the base face of the supporting device is substantially flush with the lower surface of the supporting body.

14. The seat cushion of claim 12, wherein the upper face of the supporting device is spaced from the upper surface of the supporting body by a distance of 5 to 70 mm.

15. The seat cushion of claim 12, wherein the distance between the upper and lower faces of the supporting device, when embedded in the supporting body, is smaller than said distance in an unstressed state of the supporting device.

16. The seat cushion of claim 12, wherein the supporting body defines recesses extending substantially perpendicularly to the surfaces thereof between the edges of the supporting body and the edges of the supporting device.