Negative poisson's ratio materials for doors and windows

Patent metadata

Field	Value
Publication number	US-12091908-B2
Application number	US-202217971053-A
Country	US
Kind code	B2
Filing date	Oct 21, 2022
Priority date	Oct 21, 2022
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A door includes a rectangular panel having a first face, a second face, and two pairs of opposing edges, in which the edges of each pair of edges are parallel and in which a first pair of edges is longer than a second pair of edges. The rectangular panel includes a layered composite material, in which a first layer of the composite material has a positive Poisson's ratio (PPR) and a second layer of the composite material is disposed in contact with the first layer and that includes a material having a negative Poisson's ratio (NPR). The door includes a hinge including plates joined together by a joint, in which a first one of the plates is attached to a first one of the edges of the first pair of edges and in which a second one of the plates extends beyond the first one of the edges. The door also includes a handle opening defined through a thickness of the rectangular panel.

First claim

What is claimed is:

1. A door comprising:
a rectangular panel having a first face, a second face, and two pairs of opposing edges, in which the edges of each pair of edges are parallel and in which a first pair of edges is longer than a second pair of edges;
in which the rectangular panel comprises a layered composite material, in which:
a first layer of the composite material has a positive Poisson's ratio (PPR); and
a second layer of the composite material is disposed in contact with the first layer and comprises a material having a negative Poisson's ratio (NPR), wherein the second layer of the composite material comprises an NPR foam;

a hinge comprising plates joined together by a joint, in which a first one of the plates is attached to a first one of the edges of the first pair of edges and in which a second one of the plates extends beyond the first one of the edges;
in which a handle opening is defined through a thickness of the rectangular panel.

2. The door of claim 1 , in which the first layer of the composite material and the second layer of the composite material are disposed parallel to the first face of the door.

3. The door of claim 1 , in which first layer of the composite material and the second layer of the composite material are disposed perpendicular to the first face of the door.

4. The door of claim 1 , in which composite material comprises a third layer having a positive Poisson's ratio, in which the second layer comprising the NPR material is disposed between the first layer and the third layer of the composite material.

5. The door of claim 1 , in which the second layer of the composite material comprises a re-entrant foam structure.

6. The door of claim 1 , in which the NPR foam has a characteristic dimension of between 0.1 μm and 3 mm.

7. The door of claim 1 , in which the second layer of the composite material comprises a metal, ceramic, or polymer having a negative Poisson's ratio.

8. The door of claim 1 , comprising a lock at least partially disposed in an interior of the rectangular panel, in which the lock comprises an NPR material.

9. The door of claim 8 , in which the lock comprises:
a cylinder; and
spring-loaded pins configured to engage with the cylinder to prevent the cylinder from turning,
in which the cylinder, the pins, or both comprises an NPR material.

10. The door of claim 1 , comprising a latch comprising:
a face plate disposed on the first one of the edge of the first set of edges; and
a bolt disposed in an interior of the rectangular panel and configured to extend beyond the first one of the edges of the first set of edges,
in which the face plate, the bolt, or both comprises an NPR material.

11. The door of claim 10 , in which the face plate, the bolt, or both comprises an NPR metal foam.

12. The door of claim 1 , comprising a doorknob disposed in the handle opening, in which the doorknob comprises an NPR material.

13. The door of claim 12 , in which the doorknob comprises an NPR metal foam or an NPR polymer foam.

14. The door of claim 1 , comprising:
a pet flap opening defined through the thickness of the rectangular panel, wherein the pet flap opening defines interior edges in the rectangular panel;
a pet flap frame attached to the interior edges in the rectangular panel, wherein the pet flap frame comprises an NPR material; and
a pet flap attached to the pet flap frame along an edge of the interior edges of the pet flap frame and disposed within the pet flap opening.

15. A door comprising:
a rectangular panel having a first face, a second face, and two pairs of opposing edges, in which the edges of each pair of edges are parallel and in which a first pair of edges is longer than a second pair of edges;
in which the rectangular panel comprises a layered composite material, in which:
a first layer of the composite material has a positive Poisson's ratio (PPR); and
a second layer of the composite material is disposed in contact with the first layer and comprises a material having a negative Poisson's ratio (NPR);

a hinge comprising plates joined together by a joint, in which a first one of the plates is attached to a first one of the edges of the first pair of edges and in which a second one of the plates extends beyond the first one of the edges, wherein the plates of the hinge comprise an NPR material;
in which a handle opening is defined through a thickness of the rectangular panel.

16. The door of claim 15 , in which the plates of the hinge comprises an NPR-PPR composite material.

17. The door of claim 15 , in which the plates of the hinge comprise an NPR metal foam.

18. The door of claim 1 , in which a window opening is defined through the thickness of the rectangular panel, and in which the door comprises:
a window disposed in the window opening; and
a seal disposed around edges of the window opening, in which the seal comprises an NPR material.

19. The door of claim 18 , in which the window comprises an NPR material.

20. The door of claim 19 , in which the window comprises an NPR ceramic foam that is transparent to visible light.

21. The door of claim 18 , in which the seal comprises an NPR polymer foam.

Assignees

• Park Joon Bu

Inventors

• Park Joon Bu

Classifications

• E06B2003/7049

  Specific panel characteristics · CPC title

• E06B2003/7051

  of layered construction involving different materials · CPC title

• E06B3/82

  Flush doors, i.e. with completely flat surface (E06B3/02, {E06B3/7003 and E06B3/7015} take precedence) · CPC title

• E05D9/00

  Flaps or sleeves specially designed for making from particular material, e.g. hoop-iron, sheet metal, plastics · CPC title

• E05B63/00

  Locks {or fastenings} with special structural characteristics · CPC title