Microwave sealing device of an opening for a rotating shaft

Patent metadata

Field	Value
Publication number	US-9907123-B2
Application number	US-201013263212-A
Country	US
Kind code	B2
Filing date	Apr 29, 2010
Priority date	May 2, 2009
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

The present invention relates to a microwave sealing device of an opening for a rotating shaft ( 26 ) or axle. The sealing device ( 10; 30; 50 ) is provided for enclosing a section of the shaft ( 26 ) or axle. The sealing device ( 10; 30; 50 ) includes a front panel ( 12; 32; 52 ) and a basis part ( 14; 34; 54 ). The front panel ( 12; 32; 52 ) is formed as a plane disk and comprises a central hole ( 16; 36; 56 ) in its center and a plurality of cuts ( 20; 40; 58, 60 ). The basis part ( 14; 34; 54 ) is formed as a hollow part with a peripheral wall and two opposing face sides. At least one of the two opposing face sides of the basis part ( 14; 34; 54 ) is open. The basis part ( 14; 34; 54 ) comprises a plurality of cuts ( 22; 42; 62 ) in the peripheral wall. The front panel ( 12; 32; 52 ) is attached at the open face side or at one of the two open face sides, respectively, of the basis part ( 14; 34; 54 ).

First claim

The invention claimed is:

1. A microwave sealing device for sealing an opening in a cavity wall ( 24 ) of a microwave oven for a rotating shaft ( 26 ) or axle, said sealing device comprising:
a front panel ( 12 ; 32 ; 52 ) formed as a plane disk, said front panel ( 12 ; 32 ; 52 ) comprising a central hole ( 16 ; 36 ; 56 ) in the centre of the front panel ( 12 ; 32 ; 52 ) and a plurality of cuts or slots ( 20 ; 40 ; 58 , 60 ), and
a basis part ( 14 ; 34 ; 54 ) formed as a hollow part with a peripheral wall and two opposing face sides, wherein at least one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ) is open, wherein the front panel ( 12 ; 32 ; 52 ) is attached at said open side of the one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ), said basis part ( 14 ; 34 ; 54 ) comprising a plurality of cuts or slots ( 22 ; 42 ; 62 ) in the peripheral wall of the basis part ( 14 ; 34 ; 54 ), wherein:
the sealing device encloses a section of the rotating shaft ( 26 ) or axle.

2. The microwave sealing device according to claim 1 , characterized in that each cut or slot ( 20 ; 40 ; 58 , 60 ) of the front panel ( 12 ; 32 ; 52 ) corresponds to a cut or slot ( 22 ; 42 ; 62 ) of the basis part ( 14 ; 34 ; 54 ).

3. The microwave sealing device according to claim 2 , characterized in that each cut ( 20 ; 40 ; 58 , 60 ) of the front panel ( 12 ; 32 ; 52 ) and the corresponding cut or slot ( 22 ; 42 ; 62 ) of the basis part ( 14 ; 34 ; 54 ) are substantially orthogonal to each other.

4. The microwave sealing device according to claim 1 , characterized in that the front panel ( 12 ; 32 ; 52 ) is parallel to the opening.

5. The microwave sealing device according to claim 1 , characterized in that the front panel ( 12 ; 32 ; 52 ) partially covers said open side of the one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ), at which the front panel ( 12 ; 32 ; 52 ) is attached.

6. The microwave sealing device according to claim 5 , characterized in that the diameter of the front panel ( 12 ; 32 ; 52 ) is substantially equal to the diameter of the open side of the one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ), at which the front panel ( 12 ; 32 ; 52 ) is attached.

7. The microwave sealing device according to claim 1 , characterized in that the diameter of the open side of the one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ), at which the front panel ( 12 ; 32 ; 52 ) is attached, is larger than the diameter of the central hole ( 16 ; 36 ; 56 ) of the front panel ( 12 ; 32 ; 52 ).

8. The microwave sealing device according to claim 1 , characterized in that the diameter of the open side of the one of the two opposing face sides of the basis part ( 14 ; 34 ; 54 ), at which the front panel ( 12 ; 32 ; 52 ) is attached, is substantially equal to the diameter of the central hole ( 16 ; 36 ; 56 ) of the front panel ( 12 ; 32 ; 52 ).

9. The microwave sealing device according to claim 1 , characterized in that the cuts or slots ( 20 ; 40 ; 58 , 60 ) of the front panel ( 12 ; 32 ; 52 ) are formed as at least one of slots, circular holes, elliptical holes or rectangular holes.

10. The microwave sealing device according to claim 1 , characterized in that the cuts or slots ( 22 ; 42 ; 62 ) of the basis part ( 14 ; 34 ; 54 ) are formed as at least one of slots, circular holes, elliptical holes or rectangular holes.

11. The microwave sealing device according to claim 1 , characterized in that the front panel ( 12 ; 32 ; 52 ) comprises a plurality of sectors ( 18 ; 38 ) separated by slots ( 20 ; 40 ).

12. The microwave sealing device according to claim 1 , characterized in that the sealing device is formed as a single piece part.

13. The microwave sealing device according to claim 1 , characterized in that the sealing device is made of at least one electrically conductive material.

14. The microwave sealing device according to claim 13 , characterized in that the sealing device is made of metal.

15. The microwave sealing device according to claim 1 , wherein the sealing device is arranged outside the microwave cavity wall.

16. The microwave sealing device according to claim 1 , wherein the sealing device is arranged as a static part of a microwave oven.

17. The microwave sealing device according to claim 1 , wherein the sealing device is arranged as a rotating part of a microwave oven.

18. The microwave sealing device according to claim 1 , wherein basis part ( 14 ; 34 ; 54 ) is formed as a hollow cylinder.

19. The microwave sealing device according to claim 1 , wherein basis part ( 14 ; 34 ; 54 ) is formed as a hollow part with a rectangular or elliptical cross section.

20. The microwave sealing device according to claim 1 , wherein basis part ( 14 ; 34 ; 54 ) is formed as a cylinder barrel.

21. The microwave sealing device according to claim 1 , wherein the plurality of cuts or slots ( 22 ; 42 ; 62 ) in the peripheral wall of the basis part ( 14 ; 34 ; 54 ) extend parallel to the central longitudinal axis of the basis part ( 14 ; 34 ; 54 ).

22. The microwave sealing device according to claim 1 , wherein the peripheral wall of the basis part ( 14 ; 34 ; 54 ) is contiguous with a perimeter of the plurality of cuts or slots ( 20 ; 40 ; 58 , 60 ) in the front panel ( 12 ; 32 ; 52 ).

23. The microwave sealing device according to claim 1 , further comprising two additional elements ( 44 ; 46 ) for fixing the front panel ( 12 ; 32 ; 52 ) onto the basis part ( 14 ; 34 ; 54 ), said two additional elements ( 44 ; 46 ) being arranged at an outer portion of the front panel ( 12 ; 32 ; 52 ) and extending perpendicularly to a plane of the front panel ( 12 ; 32 ; 52 ).

24. A microwave sealing device for sealing an opening in a cavity wall ( 24 ) of a microwave oven for a rotating shaft ( 26 ) or axle, said sealing device comprising:
a front panel ( 12 ; 32 ; 52 ) formed as a plane disk, said front panel ( 12 ; 32 ; 52 ) comprising a central hole ( 16 ; 36 ; 56 ) in the centre of the front panel ( 12 ; 32 ; 52 ) and a plurality of cuts or slots ( 20 ; 40 ; 58 , 60 ), and
a basis part ( 14 ; 34 ; 54 ) formed as a hollow part and one open end, wherein the front panel ( 12 ; 32 ; 52 ) is attached at an opposite end of the basis part ( 14 ; 34 ; 54 ), said basis part ( 14 ; 34 ; 54 ) comprising a plurality of cuts or slots ( 22 ; 42 ; 62 ) in a peripheral wall of the basis part ( 14 ; 34 ; 54 ), said cuts or slots ( 22 ; 42 ; 62 ) extending over less than an entire length of the peripheral wall of the basis part ( 14 ; 34 ; 54 ), wherein:
a motor ( 28 ) is arranged outside of the cavity wall ( 24 ) and the sealing device is arranged between the motor ( 28 ) and the cavity wall ( 24 ), said sealing device being attached at the motor ( 28 ) and said sealing device being arranged besides the opening in the cavity wall ( 24 ) and close at an outer side of the cavity wall ( 24 ) without being attached at the cavity wall ( 24 ),
the sealing device encloses a section of the rotating shaft ( 26 ) or axle,
the rotating shaft ( 26 ) or axle penetrates the opening in the cavity wall ( 24 ) and the sealing device ( 10 ),
the rotating shaft ( 26 ) or axle extends along a central longitudinal axis of the basis part ( 34 ) and penetrates the front panel ( 32 ) and the basis part ( 3

Assignees

• Hofmann Arnd
• Danzer Norbert
• Zbat Abdel Ilah
• Electrolux Home Products Corp Nv

Inventors

• Hofmann Arnd
• Danzer Norbert
• Zbat Abdel Ilah

Classifications

• H05B6/76 Primary

  Prevention of microwave leakage, e.g. door sealings · CPC title