Vacuum assisted conformal shape setting device

Patent metadata

Field	Value
Publication number	US-9930728-B2
Application number	US-201113695762-A
Country	US
Kind code	B2
Filing date	Jan 3, 2011
Priority date	Jan 3, 2011
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A device and method for applying treatment to a structure includes a housing having a first membrane sealed to a second membrane for creating an airtight cavity therebetween for receiving a porous material and a working layer. The method includes the process of conforming the shape of the housing to the structure and applying a treatment thereafter to the structure.

First claim

The invention claimed is:

1. A device for providing treatment to a surface of a structure, the device comprising:
a housing having:
a first membrane sealed to a second membrane, the first membrane and the second membrane forming an airtight cavity therebetween;

a polyester mat having thickness of between ¼ inch to ½ inch and disposed within the cavity, the polyester mat having material composed of a plurality of random oriented fibers configured to interlock under pressure and configured to conform to the surface of the structure, the plurality of random oriented fibers being configured to retain the conformed shape of the surface of the structure after the air is evacuated from the airtight cavity;
a working layer disposed within the cavity, the working layer being adapted to apply treatment to the structure; and
a valve attached to the housing and extending through the first membrane, the valve being configured to provide channeling access to the air disposed within the airtight cavity;
wherein the first membrane and the second membrane are grooved externally to the airtight cavity and are configured to provide additional friction between an internal surface of the housing and the surface of the structure;
wherein the housing is rigid enough to act as a mold after the air is evacuated from the airtight cavity;
wherein during use, the housing conforms to the contoured shape of the structure as air is evacuated, the material disposed therein retains the contoured shape, and the working layer applies treatment to the structure; and
wherein the plurality of random oriented fibers are configured to interlock with each other as pressure is applied thereto.

2. The device of claim 1 , wherein the first membrane and the second membrane are composed of an elastomeric material.

3. The device of claim 1 , wherein the working layer is a heater.

4. The device of claim 3 , the heater comprising:
a heat absorbing material; and
an electrical coil disposed within the heat absorbing material;
wherein electricity is passed through the electrical coil, thereby providing heat to the structure.

5. The device of claim 3 , further comprising:
a thermocouple disposed within the cavity, the thermocouple being adapted to measure the temperature of the of the heat applied by the heater.

6. The device of claim 1 , wherein the working layer is a cooler adapted to chill the structure.

7. A device for applying heat to a surface of a structure, the device comprising:
a housing having:
a first membrane sealed to a second membrane, the first membrane and the second membrane forming an airtight cavity therebetween;

a polyester mat having thickness of between ¼ inch to ½ inch and disposed within the cavity, the mat having material composed of a plurality of random oriented fibers configured to interlock under pressure and configured to conform to the surface of the structure, the plurality of random oriented fibers being configured to retain the conformed shape of the surface of the structure after the air is evacuated from the airtight cavity;
a heater disposed within the cavity, the heater being adapted to apply heat to the structure; and
a valve attached to the housing and extending through the first membrane, the valve being configured to provide channeling access to the air disposed within the airtight cavity;
wherein the first membrane and the second membrane are externally grooved, dimpled, and are configured to provide additional friction between an internal surface of the housing and the surface of the structure;
wherein the housing is rigid enough to act as a mold after the air is evacuated from the airtight cavity;
wherein during use, the housing conforms to the contoured shape of the structure as air is evacuated, the material disposed therein retains the contoured shape, and the heater applies heat to the structure; and
wherein the plurality of random oriented fibers are configured to interlock with each other as pressure is applied thereto.

8. The device of claim 7 , wherein the first membrane and the second membrane are composed of an elastomeric material.

9. The device of claim 7 , the heater comprising:
a heat absorbing material; and
an electrical coil disposed within the heat absorbing material;
wherein electricity is passed through the electrical coil, thereby providing heat to the structure.

10. The device of claim 7 , further comprising:
a thermocouple disposed within the cavity, the thermocouple being adapted to measure the temperature of the of the heat applied by the heater.

11. A method for providing treatment to a surface of a structure, the method comprising:
providing a housing having an airtight cavity;
placing a polyester mat having thickness of between ¼ inch to ½ inch within the cavity, the polyester mat having material composed of a plurality of random oriented fibers configured to interlock under pressure and configured to conform to the surface of the structure, the plurality of random oriented fibers being configured to retain the conformed shape of the surface of the structure after the air is evacuated from the airtight cavity;
grooving an external surface of the housing to increase friction between an internal surface of the housing and the surface of the structure;
placing a working layer within the cavity;
positioning the device over the surface of the structure;
interlocking the plurality of random oriented fibers by evacuating air trapped within the airtight cavity; and
applying treatment to the structure by activating the working layer;
wherein the housing is sufficiently rigid to act as a mold after the air is evacuated from the airtight cavity.

12. The method of claim 11 , wherein the process of applying treatment includes applying heat to the structure with a heater.

13. The method of claim 12 , further comprising:
providing a heat absorbing material having coils disposed therein; and
producing heat by passing an electric current through the coil.

14. The method of claim 12 , further comprising:
monitoring the temperature of heat treatment with a thermocouple disposed within the cavity;
adjusting the amount of electric current to achieve a desire temperature.

15. The method of claim 11 , wherein the process of applying treatment includes chilling the structure with a cooler.

16. The method of claim 11 , further comprising:
providing an opening in the housing;
wherein the opening allows access to the structure during setup.

17. The device of claim 7 , further comprising:
an opening in the housing;
wherein the opening is airtight when closed.

18. The device of claim 1 , further comprising:
an opening in the housing;
wherein the opening is airtight when closed; and
wherein the opening allows access to the surface of the structure when opened during setup.

Assignees

• Whitworth Denver R
• Cribb Vance N
• Nottorf Eric W
• Textron Innovations Inc

Inventors

• Whitworth Denver R
• Cribb Vance N
• Nottorf Eric W

Classifications

• H05B2203/003

  using serpentine layout · CPC title

• H05B2203/014

  Heaters using resistive wires or cables not provided for in H05B3/54 · CPC title

• H05B3/34 Primary

  flexible, e.g. heating nets or webs · CPC title

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• A61F5/05833

  Splints rigidified by vacuum evacuation · CPC title