Granted Patent B2

US 9,574,789 · App. 15/213,172 · Granted Feb 21, 2017

Abstract

Claims (40)

1. A damper comprising:

a frame;

a first blade pivotally engaged with the frame, the first blade comprising a first end portion, the first blade comprising a hollow portion for receiving an insulating material;

a second blade pivotally engaged with the frame, the second blade comprising a second end portion, the second blade comprising a hollow portion for receiving an insulating material;

a first seal connected to the first end portion of the first blade;

a second seal connected to the second end portion of the second blade;

the first seal and the second seal disposed to cooperatively engage an adjacent first blade end portion and second blade end portion such that a dead air space is created between the adjacent first seal and second seal in a damper closed position; and

the first thermal gap and the second thermal gap disposed within said dead air space in the damper closed position.

2. The damper as in claim 1 , wherein the first seal comprises a flexible material.

3. The damper as in claim 1 , wherein the second seal comprises a flexible material.

4. The damper as in claim 1 , wherein the first seal is hollow.

5. The damper as in claim 1 , wherein the second seal is hollow.

6. The damper as in claim 1 , wherein the first blade rotates in a direction opposite of the second blade during operation.

7. The damper as in claim 1 , wherein the insulating material is foam.

8. The damper as in claim 1 , wherein the first seal has a rolling engagement with the second blade end portion as the damper is closed.

9. The damper as in claim 1 , wherein the first blade rotates in the same direction as the second blade during operation.

10. A damper comprising:

a frame;

a first blade pivotally engaged with the frame, the first blade comprising a first end portion;

a second blade pivotally engaged with the frame, the second blade comprising a second end portion;

a first seal connected to the first end portion of the first blade;

a second seal connected to the second end portion of the second blade;

the first seal and the second seal disposed to cooperatively engage an adjacent first blade end portion and second blade end portion with the damper in the closed position; and

a dead air space disposed between the first seal and second seal with the damper in the closed position.

11. The damper as in claim 10 , wherein the first seal has a rolling engagement with the second blade end portion as the damper is closed.

12. The damper as in claim 10 , wherein the first thermal gap is disposed between the first seal and the second seal with the damper in the closed position.

13. The damper as in claim 12 , wherein the second thermal gap is disposed between the first seal and the second seal with the damper in the closed position.

14. The damper as in claim 10 , wherein the first seal comprises a flexible material.

15. The damper as in claim 10 , wherein the second seal comprises a flexible material.

16. The damper as in claim 10 , wherein the first seal is hollow.

17. The damper as in claim 10 , wherein the second seal is hollow.

18. A damper comprising:

a frame;

a first blade pivotally engaged with the frame;

a second blade pivotally engaged with the frame;

a first seal connected to a first end portion of the first blade;

a second seal connected to a second end portion of the second blade;

the first seal and the second seal disposed to cooperatively engage an adjacent first blade end portion and second blade end portion with the damper in the closed position; and

wherein the first blade and second blade are filled with insulation.

19. The damper of claim 18 wherein a dead air space is disposed between the first seal and second seal with the damper in the closed position.

Assignments (6)