Brushless slip ring using rolling elements as electrical conductors
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United States of America Patent
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Jul 13, 1999
Issued Date -
N/A
app pub date -
Jul 30, 1997
filing date -
Jul 30, 1996
priority date (Note) -
Expired
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Abstract
A brushless slip ring includes a housing, a plurality of annular spaces disposed in the housing and spaced apart along a common longitudinal axis, and a cageless assembly of electrically conductive spherical balls freely rotatably disposed in each of the spaces. Each of the spaces is formed between radially inner and outer electrically conductive surfaces of a rotor and stator, respectively, and a pair of axially spaced retainer rings. The spherical balls conduct electrical current between the outer and inner surfaces. The balls are rigid and harder than the inner and outer surfaces and are arranged in an annular row. The balls occupy substantially the entire circumference of the space and are freely circumferentially movable relative to one another within the space for making contact with one another.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MOOG INC.
International Classification(s)
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Senni, Alfred R | 26 Peachtree La., Burlington, NJ 08016 | 2 | 29 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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