Cushion Assembly

• US 20170283069A1
• Filed: 03/24/2017
• Published: 10/05/2017
• Est. Priority Date: 04/01/2016
• Status: Abandoned Application

• Current Assignee: Mirus Aircraft Seating, Ltd. (Mirus Aircraft Seating Malaysia Sdn. Bhd.)
• Original Assignee: Mirus Aircraft Seating, Ltd. (Mirus Aircraft Seating Malaysia Sdn. Bhd.)
• Inventors: Hall, Phil, McGuire, Ben
• Application Number:
  US15/468,999
• Publication Number:
  US 20170283069A1
• Time in Patent Office: Days
• CPC Class Codes: A47C 31/001 Fireproof means
• CPC Class Codes: B32B 2266/025 Polyolefin vinyl or acrylic copolymers B32B2266/0221, B32B2266/0242
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/72 Density
• CPC Class Codes: B32B 2605/003 Interior finishings
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/32 at least two layers being foamed and next to each other
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B60N 2/7005 detachable
• CPC Class Codes: B60N 2/7017 characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
• CPC Class Codes: B64D 11/0647 Seats characterised by special upholstery or cushioning features

Abstract

A cushion assembly has first and second foam layers that are fixedly connected to each other so as to be contiguous. The cushion assembly also includes a fire-retardant covering and finds particular use as the seat base of a vehicle seat, especially an aircraft seat.

Claims

1. A cushion assembly for an aircraft seat comprising:

a first foam layer; and

a second foam layer;

wherein the first foam layer is secured to the second foam layer to form a cushion element, the cushion assembly further including a fire-retardant material that extends around an outer surface of the cushion element.

2. A cushion assembly as claimed in claim 1, wherein the first foam layer is secured to the second foam layer by means of an adhesive.

3. A cushion assembly as claimed in claim 1, wherein the first foam layer has a higher compressive strength and/or a higher rigidity and/or is more lightweight than the second foam layer.

4. A cushion assembly as claimed in claim 1, wherein a molded density of the first foam layer is between 30 g/liter and 65 g/liter.

5. A cushion assembly as claimed in claim 1, wherein the first foam layer includes expanded polypropylene.

6. A cushion assembly as claimed in claim 1, wherein the second foam layer has a lower compressive strength and/or is less rigid and/or is less firm and/or is more shape adaptive than the first foam layer.

7. A cushion assembly as claimed in claim 1 wherein the second foam layer includes at least one of polyurethane, graphite filled polyurethane, or high resilience polyurethane.

8. A cushion assembly as claimed in claim 1, wherein the first foam layer underlies the second foam layer such that an upper surface of the first foam layer is secured to a lower surface of the second foam layer.

9. A cushion assembly as claimed in claim 1, wherein the first foam layer is substantially rigid.

10. A cushion assembly as claimed in claim 1, wherein a lower surface of the second foam layer is contiguous and/or conformal with an upper surface of the first foam layer.

11. A cushion assembly as claimed in claim 1, wherein the fire retardant material extends around an entire surface of the cushion element.

12. A cushion assembly as claimed in claim 1, further including a cover that extends around at least a part of an outer surface of the fire retardant material.

13. A cushion assembly as claimed in claim 1, wherein the first foam layer exhibits a greater firmness than the second foam layer.

14. A seat having a cushion assembly according to claim 1.

15. A vehicle, vessel, or aircraft having a seat as claimed in claim 14.

16. A cushion assembly for an aircraft seat comprising:

a first foam layer; and

a second foam layer;

the first foam layer being secured to the second foam layer to form a cushion element, the cushion assembly further including a fire-retardant material that extends around the outer surface of the cushion element,

wherein the first foam layer is substantially rigid and is secured to the second foam layer by means of an adhesive, and

wherein a lower surface of the second foam layer is contiguous and/or conformal with an upper surface of the first foam layer.