Anatomical support apparatus

• US 5,444,881 A
• Filed: 06/22/1993
• Issued: 08/29/1995
• Est. Priority Date: 12/04/1989
• Status: Expired due to Term

• Current Assignee: Supracor, Inc.
• Original Assignee: Supracor Systems, Inc.
• Inventors: Landi, Curtis L., Cazalet, Peter M., Wilson, Susan L.
• Primary Examiner(s): Grosz, Alexander
• Application Number:
  US08/080,745
• Time in Patent Office: 798 Days
• Field of Search: 5/448, 5/449, 5/450, 5/453, 5/454, 5/654, 5/653, 5/469, 5/420, 5/457, 299/DIG. 3, 299/452.21, 299/452.23, 299/452.41, 299/452.42, 428/116, 428/118, 428/73, 428/131
• US Class Current: 5/708
• CPC Class Codes: A61G 5/1043 Cushions specially adapted for wheelchairs
• CPC Class Codes: A61G 5/1045 for the seat portion
• CPC Class Codes: A61G 5/1091 Cushions, seats or abduction devices
• CPC Class Codes: A61G 7/02 with toilet conveniences, or specially adapted for use with toilets
• CPC Class Codes: A61G 7/05715 with modular blocks, or inserts, with layers of different material
• CPC Class Codes: A61G 7/05784 with ventilating means, e.g. mattress or cushion with ventilating holes or ventilators
• CPC Class Codes: B29C 65/028 making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
• CPC Class Codes: B29C 66/112 Single lapped joints
• CPC Class Codes: B29C 66/114 Single butt joints
• CPC Class Codes: B29C 66/1312 Single flange to flange joints, the parts to be joined being rigid the parts to be joined being flexible B29C66/133
• CPC Class Codes: B29C 66/5346 said single elements being substantially flat
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/72343 for liquids
• CPC Class Codes: B29C 66/72525 comprising honeycomb cores
• CPC Class Codes: B29D 99/0089 Producing honeycomb structures consisting of porous ceramic ware C04B38/0006
• CPC Class Codes: B29D 99/0092 Producing upholstery articles, e.g. cushions, seats B29C63/025 takes precedence
• CPC Class Codes: B29K 2011/00 Use of rubber derived from chloroprene as moulding material
• CPC Class Codes: B29K 2021/00 Use of unspecified rubbers as moulding material
• CPC Class Codes: B29K 2021/003 Thermoplastic elastomers
• CPC Class Codes: B29K 2023/083 EVA, i.e. ethylene vinyl acetate copolymer
• CPC Class Codes: B29K 2075/00 : Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2031/608 : Honeycomb structures
• CPC Class Codes: B32B 2305/024 : Honeycomb
• CPC Class Codes: B32B 3/12 : characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
• CPC Class Codes: B32B 37/146 : whereby one or more of the layers is a honeycomb structure
• CPC Class Codes: E01F 8/0076 : Cellular, e.g. as wall facing
• CPC Class Codes: E04C 2/36 : spaced apart by transversely-placed strip material, e.g. honeycomb panels honeycomb or other core members for layered products B32B
• CPC Class Codes: Y10S 297/03 : Pneumatic
• CPC Class Codes: Y10T 428/24149 : Honeycomb-like

Abstract

An anatomical support apparatus, such as a mattress pad or seat cushion, has a supporting frame, a perforated outer envelope, and a resilient inner body encased within said envelope, both said inner body and said envelope being supported by said frame, and an improved resilient inner body, comprising: a first panel including a first honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells, the opposite extremities of said cells walls forming first and second core faces on opposite sides of said first core; and

means tending to maintain said first core in its expanded cellular configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus, and including at least a first facing sheet bonded to said first face and a second facing sheet of material bonded to said second face, said first facing sheet and said second facing sheet of said first panel being perforated and joined together about the perimeter of said core to provide a chamber enveloping said first core; and

means fluid-communicatively coupled to said first panel for adding fluid to said chamber, said fluid flowing through said perforations of said walls and at least one of said first and second facing sheets.

Claims

1. In an anatomical support apparatus having a frame for supporting said apparatus, an outer envelope, and a resilient inner body encased within said envelope, both said inner body and said envelope being supported by said frame, an improved resilient inner body, comprising:

a first panel including

a first honeycomb core formed of undulated strips of resilient thermoplastic material, thermal compression bonded together to form cell walls defining a plurality of contiguous regularly shaped cells, the opposite extremities of said cell walls forming first and second core faces on opposite sides of said first core, at least some of said cell walls having perforations therein; and

means tending to said first core in its expanded cellular configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus and including a first facing sheet bonded to said first face and a second facing sheet bonded to said second face, said first facing sheet and said second facing sheet of said first panel being sealingly joined together about the perimeter of said core to provide a chamber enveloping said first core; and

means fluid-communicatively coupled to said first panel for selectively adding fluid to or subtracting fluid from said chamber, said fluid flowing into said cells and through the perforations of said walls to change certain characteristics of said first panel.

2. In an anatomical support apparatus, an improved resilient inner body as recited in claim 1, wherein said means tending to maintain includes:

a planarizing thermal compression deformation of said first face of said first core formed by upper extremities of said cell walls.

3. An improved resilient inner body as recited in claim 2, wherein said means tending to maintain includes:

a planarizing thermal compression deformation of said second face of said first core formed by lower extremities of said cell walls.

4. In ananatomical support apparatus, an improved resilient inner body as recited in claim 1, further including:

at least one other panel affixed to said first panel and including

a second honeycomb core formed of undulated strips of resilient thermoplastic material, thermal compression bonded together to form cell walls defining a plurality of contiguous regularly shaped cells; and

means for maintaining said second core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus.

5. An improved seat cushion comprising:

a first panel including

a honeycomb core formed of resilient thermoplastic and including cell walls defining a plurality of contiguous regularly shaped cells, at least some of said cell walls of said first panel having perforations therein, the extremities of said cell walls defining first and second core faces;

means for maintaining said core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus, and including a first facing sheet of said resilient material bonded to said first core face and a second facing sheet of said resilient material bonded to said second core face, said first and second facing sheets of said first panel being sealingly jointed together about the perimeter of said core to provide a chamber; and

mean fluid-communicatively coupled to said first panel for selectively adding fluid to or subtracting fluid from said chamber, said fluid flowing through the perforations of said walls to change certain characteristics of said first panel.

6. An improved seat cushion as recited in claim 5 further including:

at least one other panel affixed to said first panel and including

a second honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells;

means for maintaining said second core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user.

7. An improved mattress pad comprising:

a first panel including

a first honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells, the opposite extremities of which form first and second core faces on opposite sides of said first core, at least some of said cell walls of said first panel have perforations therein;

means tending to maintain said first core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user, and including a first facing sheet bonded to said first face and a second facing sheet bonded to said second face, said first facing sheet and said second facing sheet of said first panel being sealingly joined together about the perimeter of said core to provide a sealed chamber envelope said first core; and

means fluid-communicatively coupled to said first panel for selectively adding fluid to or subtracting fluid from said sealed chamber, said fluid flowing into said cells and through the perforations of said walls to change certain characteristics of said first panel.

8. An improved mattress pad as recited in claim 7 and further including:

at least one other panel affixed to said first panel, including

a second honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells;

means tending to maintain said second core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user.

9. In an anatomical support apparatus having a supporting frame, a perforated outer envelope, and a resilient inner body encased within said envelope, both said inner body and said envelope being supported by said frame, an improved resilient inner body, comprising:

a first panel including

a first honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells, the opposite extremities of said cell walls forming first and second core faces on opposite sides of said first core; and

means tending to maintain said first core in its expanded cellular configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus, and including at least a first facing sheet bonded to said first face and a second facing sheet of material bonded to said second face, said first facing sheet and said second facing sheet of said first panel being perforated and joined together about the perimeter of said core to provide a chamber enveloping said first core; and

means fluid-communicatively coupled to said first panel for adding fluid to said chamber, said fluid flowing through said perforations of said walls and at least one of said first and second facing sheets.

10. In an anatomical apparatus, an improved resilient inner body as recited in claim 9, further including:

at least one other panel affixed to said first panel and including

a second honeycomb core formed of undulated strips of resilient thermoplastic material, thermal compression bonded together to form cell walls defining a plurality of contiguous regularly shaped cells; and

means for maintaining said second core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user of said apparatus.

11. An improved seat cushion comprising:

a first panel including

a honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous, regularly shaped cells, at least some of said cell walls panel having perforations therein, the extremities of said cell walls defining first and second core faces;

means for maintaining said core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user, and including a perforated first facing sheet of said resilient thermoplastic material bonded to said first core face and a second facing sheet of said resilient thermoplastic material bonded to said second core face, said first and second facing sheets being sealingly joined together about the perimeter of said core to provide a chamber; and

means fluid-communicatively coupled to said first panel for adding fluid to said chamber, said fluid flowing through said perforations of said walls and said first facing sheet.

12. An improvise seat cushion as recited in claim 11, and further comprising an outer envelope that is perforated, and wherein said first facing sheet and said second facing sheet of said first panel are perforated and are joined together about the perimeter of said first core.

13. An improved seat cushion as recited in claim 12, and further including:

at least one other panel affixed to said first panel and including

another honeycomb core formed of resilient thermoplastic material and including cell walls defining a plurality of contiguous regularly shaped cells; and

means tending to maintain said core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user.

14. An improved mattress pad comprising:

a first panel including

a first honeycomb core formed of undulated strips of resilient thermoplastic material, thermal compression bonded together to form cell walls defining a plurality of contiguous regularly shaped cells, the opposite extremities of which form first and second core faces on opposite sides of said first core, at least some of said cells of said first panel have perforations therein;

means tending to maintain said first core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user, and including a first facing sheet bonded to said first face and a second facing sheet bonded to said second face, at least one of said first and second facing sheets being perforated, said first facing sheet and said second facing sheet of said first panel being joined together about the perimeter of said core to provide a chamber enveloping said first core; and

means fluid-communicatively coupled to said first panel for adding fluid to said chamber, said fluid flowing through said perforations of said walls are at least one of said first and second facing sheets.

15. An improved mattress pad as recited in claim 14 and further including:

at least one other panel affixed to said first panel and including

a second honeycomb core formed of undulated strips of resilient thermoplastic material, thermal compression bonded together to form cell walls defining a plurality of contiguous regularly shaped cells; and

means tending to maintain said second core in its expanded configuration so that it will anisotropically flex to stabilize and spread any load applied thereto by a user.