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US 2004/0175065 A1Published application
Ball bearing assembly utilizing a labyrinth seal
AssigneeMinebea Co., Ltd.
InventorTien Vinh Nguyen
Life of this patent
Estimating the term…
Abstract
A self-contained labyrinth seal ball bearing assembly includes at least one labyrinth seal including an inner labyrinth seal ring, an outer labyrinth seal ring, a radially inner bearing shield, and a radially outer bearing shield. The labyrinth seal forms an effective barrier against solid contaminants and also non-solid contaminants such as fluids.
Claims16
A ball bearing assembly having a labyrinth seal, comprising:
- an outer ring having a radially inner surface;
- an inner ring having a radially outer surface facing said inner surface of said outer ring, said inner ring or said outer ring being in association with a rotatable component;
- at least one ball bearing disposed between said inner ring and said outer ring;
- at least one labyrinth seal disposed between the inner ring and the outer ring, said labyrinth seal including an inner labyrinth ring, and an outer labyrinth ring, said inner and outer labyrinth rings having ring extensions extending radially toward one another and defining at least one radial gap between said rings, the inner labyrinth ring being associated with the inner ring, and the outer labyrinth ring being associated with the outer ring, wherein the inner and outer labyrinth rings overlap both radially and axially,
- an inner shield,
- and an outer shield;
- and
- an inboard shield.
5 more elements
A ball bearing assembly having a labyrinth seal, comprising:
- an outer ring in association with a housing, said outer ring having a radially inner surface;
- an inner ring in association with a drive shaft and able to rotate with said drive shaft, said inner ring having a radially outer surface facing said inner surface of said outer ring;
- at least one ball bearing disposed between said inner ring and said outer ring and disposed around the rotatable drive shaft;
- at least one labyrinth seal disposed between the inner ring and the outer ring, said labyrinth seal including two labyrinth rings having ring extensions extending radially toward one another and defining at least one radial gap between said rings, the inner labyrinth ring being associated with the rotatable inner ring, and the outer labyrinth ring being associated with the outer ring, wherein the inner and outer labyrinth rings overlap both radially and axially,
- an inner shield,
- and an outer shield;
- and
- an inboard shield.
5 more elements
A ball bearing assembly having a labyrinth seal, comprising:
- an outer ring having a radially inner surface;
- an inner ring having a radially outer surface facing said inner surface of said outer ring, said inner ring or said outer ring being in association with a rotatable component;
- at least one ball bearing disposed between said inner ring and said outer ring;
- at least one labyrinth seal disposed between the inner ring and the outer ring, said labyrinth seal including an inner labyrinth ring, and an outer labyrinth ring, said inner and outer labyrinth rings having ring extensions extending radially toward one another and defining at least one radial gap between said rings, the inner labyrinth ring being associated with the inner ring, the outer labyrinth ring being associated with the outer ring, wherein the inner and outer labyrinth rings overlap both radially and axially,
- an inner shield,
- and an outer shield.
3 more elements
A roller bearing assembly having a labyrinth seal, comprising:
- an outer ring in association with a housing, said outer ring having a radially inner surface;
- an inner ring in association with a drive shaft and rotatable with said drive shaft, said inner ring having a radially outer surface facing said inner surface of said outer ring;
- at least one ball bearing disposed between said inner ring and said outer ring and disposed around the rotatable drive shaft;
- and
- at least one labyrinth seal disposed between the inner ring and the outer ring, said labyrinth seal including two labyrinth rings each having ring extensions extending radially toward one another and defining at least one radial gap between said rings, the inner labyrinth ring being associated with the rotatable inner ring, and the outer labyrinth ring being associated with the outer ring, wherein ring extensions of the inner and outer labyrinth rings overlap both radially and axially,
- an inner shield,
- and an outer shield.
4 more elements
Dependencies are inferred from the claim text.