Seal cartridge

• US 6,386,546 B1
• Filed: 08/23/2000
• Issued: 05/14/2002
• Est. Priority Date: 05/21/1993
• Status: Expired due to Term

• Current Assignee: Parker Intangibles LLC (Parker-Hannifin Corporation)
• Original Assignee: Jm Clipper Corp.
• Inventors: Fedorovich, George
• Primary Examiner(s): Knight, Anthony
• Assistant Examiner(s): Beres, John L.
• Application Number:
  US09/643,944
• Time in Patent Office: 629 Days
• Field of Search: 277/347, 277/350, 277/351, 277/412, 277/418, 277/419, 277/420, 277/421
• US Class Current: 277/351
• CPC Class Codes: F16J 15/164 the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
• CPC Class Codes: F16J 15/3256 comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
• CPC Class Codes: F16J 15/4474 Pre-assembled packings
• CPC Class Codes: F16J 15/4478 Pre-assembled packings

Abstract

A seal cartridge adapted to be mounted upon a rotating shaft, including a rotor and a stator, the rotor and stator being arranged to create a labyrinth portion and a contact portion. The rotor includes a radially outwardly directed surface and the stator includes one or more flanges biased toward the rotor surface to create the contact portion. The rotor and stator create a labyrinth portion with an inwardly facing ridge positioned within an outwardly facing groove. The stator may include a shoulder for positioning the seal cartridge with respect to a housing, or instead a sloped surface. The rotor may also have a flange which deforms and fits within an annular notch of the stator.

Claims

1. A two-piece, interlocked seal device adapted to be mounted upon a rotatable shaft, said seal device comprising:

a rotor having a flange, a radially outwardly directed groove, and a radially outwardly directed surface; and

a stator having a cover with an annular notch and a radial opening adapted to direct contaminants from the seal, a radially inwardly directed ridge, and at least one flange biased toward said rotor surface;

wherein said stator ridge is positioned within said rotor groove and said rotor flange is positioned within said stator annular notch to create a labyrinth portion and said stator flange and said rotor surface create a contact portion.

2. The seal device of claim 1, comprising a plurality of stator flanges biased toward said rotor surface.

3. The seal device of claim 2, wherein two stator flanges are biased toward said rotor surface.

4. The seal device of claim 3, further including grease positioned between said two stator flanges.

5. The seal device of claim 1, wherein said stator flange is axially directed away from said stator ridge.

6. The seal device of claim 1, wherein said stator flange is axially directed toward said stator ridge.

7. The seal device of claim 1, wherein said stator ridge includes an inclined surface.

8. The seal device of claim 1, wherein said stator ridge includes an inclined leg.

9. The seal device of claim 8, wherein said stator ridge is adapted to flex under pressure.

10. The seal device of claim 9, wherein said stator ridge includes a cutout portion.

11. The seal device of claim 1, wherein said stator includes a surface adapted for abutting against a housing.

12. The seal device of claim 1, wherein said stator includes an inclined outer surface.

13. A two-piece, interlocked seal device adapted to be mounted upon a rotatable shaft, said seal device comprising:

a rotor having a flange, a radially outwardly directed groove, and a radially outwardly directed surface; and

a stator having a cover with an annular notch and a radial opening adapted to direct contaminants from the seal, a radially inwardly directed ridge including an inclined surface, and a plurality of flanges biased toward said rotor surface;

wherein said stator ridge is positioned within said rotor groove and said rotor flange is positioned within said stator annular notch to create a labyrinth portion and said stator flanges and said rotor surface create a contact portion.

14. The seal device of claim 13, wherein two stator flanges are biased toward said rotor surface.

15. The seal device of claim 14, further including grease positioned between said two stator flanges.

16. The seal device of claim 13, wherein said stator flanges are axially directed away from said stator ridge.

17. The seal device of claim 13, wherein said stator flanges are axially directed toward said stator ridge.

18. The seal device of claim 13, wherein said stator ridge inclined surface is on an inclined leg.

19. The seal device of claim 18, wherein said stator ridge is adapted to flex under pressure.

20. The seal device of claim 19, wherein said stator ridge includes a cutout portion.

21. The seal device of claim 13, wherein said stator includes a surface adapted for abutting against a housing.

22. The seal device of claim 13, wherein said stator includes an inclined outer surface.

23. A sealed system including a housing, a rotatable shaft and a two-piece seal device, said seal device comprising:

a rotor having a flange, a radially outwardly directed groove, and a radially outwardly directed surface; and

a stator having a cover with an annular notch and a radial opening adapted to direct contaminants from the seal, a radially inwardly directed ridge, and at least one flange biased toward said rotor surface;

wherein said stator ridge is positioned within said rotor groove and said rotor flange is positioned within said stator annular notch to create a labyrinth portion and said stator flange and said rotor surface create a contact portion.

24. The sealed system of claim 23, comprising a plurality of stator flanges biased toward said rotor surface.

25. The sealed system of claim 24, wherein two stator flanges are biased toward said rotor surface.

26. The sealed system of claim 25, further including grease positioned between said two stator flanges.

27. The sealed system of claim 23, wherein said stator flange is axially directed away from said stator ridge.

28. The sealed system of claim 23, wherein said stator flange is axially directed toward said stator ridge.

29. The sealed system of claim 23, wherein said stator ridge includes an inclined surface.

30. The sealed system of claim 23, wherein said stator ridge includes an inclined leg.

31. The sealed system of claim 30, wherein said stator ridge is adapted to flex under pressure.

32. The sealed system of claim 31, wherein said stator ridge includes a cutout portion.

33. The sealed system of claim 23, wherein said stator includes a surface adapted for abutting against a housing.

34. The sealed system of claim 23, wherein said stator includes an inclined outer surface.

35. A sealed system including a housing, a rotatable shaft and a two-piece seal device, said seal device comprising:

a rotor having a flange, a radially outwardly directed groove, and a radially outwardly directed surface; and

a stator having a cover with an annular notch and a radial opening adapted to direct contaminants from the seal, a radially inwardly directed ridge including an inclined surface, and a plurality of flanges biased toward said rotor surface;

wherein said stator ridge is positioned within said rotor groove and said rotor flange is positioned within said stator annular notch to create a labyrinth portion and said stator flanges and said rotor surface create a contact portion.

36. The sealed system of claim 35, wherein two stator flanges are biased toward said rotor surface.

37. The sealed system of claim 36, further including grease positioned between said two stator flanges.

38. The sealed system of claim 37, wherein said stator flanges are axially directed away from said stator ridge.

39. The sealed system of claim 35, wherein said stator flanges are axially directed toward said stator ridge.

40. The sealed system of claim 35, wherein said stator ridge inclined surface is on an inclined leg.

41. The sealed system of claim 40, wherein said stator ridge is adapted to flex under pressure.

42. The sealed system of claim 41, wherein said stator ridge includes a cutout portion.

43. The sealed system of claim 35, wherein said stator includes a surface adapted for abutting against a housing.

44. The sealed system of claim 35, wherein said stator includes an inclined outer surface.