US Patent No: 5,923,114

Number of patents in Portfolio can not be more than 2000

Brushless slip ring using rolling elements as electrical conductors

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Importance

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Abstract

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MOOG INC.EAST AURORA, NY257

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Senni, Alfred R 26 Peachtree La., Burlington, NJ 08016 2 25

Cited Art Landscape

Patent Info (Count) # Cites Year
 
The Charles Stark Draper Laboratory, Inc. (1)
4,447,752 Ball contact slip ring assembly 16 1982
 
Other [Check patent profile for assignment information] (1)
4,592,605 Apparatus for preventing the twisting of an electrical cord or cable 9 1985

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (5)
6,472,791 Envelope for slip-ring contacting members in high-power rotary current collector system 4 2000
6,465,926 Cleaning/cooling of high-power rotary current collector system 5 2000
8,528,192 Fixture for removing slip rings from rotating electrical machinery 0 2008
8,674,581 Systems, methods, and apparatus for shorting slip rings of an induction motor 0 2011
8,558,429 Systems, methods, and apparatus for lifting brushes of an induction motor 0 2011
 
PRESTOLITE ELECTRIC INCORPORATED (2)
6,489,702 Alternator 4 2000
6,608,422 Alternator with an electric contact bearing assembly 3 2002
 
BROOKS AUTOMATION, INC. (1)
6,265,803 Unlimited rotation vacuum isolation wire feedthrough 2 1999
 
Canizales, Florencio Jr. (1)
6,612,847 Slip plate assembly and method for conductively supplying electrical current under rotational and translational force applications 8 2001
 
DIAMOND-ROLTRAN, LLC (1)
7,163,403 Rotating electrical transfer components 2 2004
 
GOODRICH CORPORATION (1)
7,648,368 Aircraft propeller assembly 0 2008
 
HARMONIC DRIVE SYSTEMS INC. (1)
7,811,091 Rotary terminal mechanism 2 2006
 
HARRY F. DOUTHIT AND CAROLYN CHEFFEE DOUTHIT AS JOINT TENANTS (1)
6,239,507 Wind powered machine 13 1999
 
J.S.T. MFG. CO., LTD. (1)
6,896,522 Hinge connector, and circuit board connected to connector 1 2002
 
MOLEX INCORPORATED (1)
7,802,992 Rotary connector 1 2006
 
MOOG INC. (1)
7,559,767 High-frequency drum-style slip-ring modules 2 2007
 
SIEMENS ENERGY, INC. (1)
6,734,588 Sectioned conductor and related methods for accommodating stress and avoiding internal deformations in power generator 1 2001
 
TYCO ELECTRONICS CORPORATION (1)
7,481,655 Rotary joint 3 2006
 
Unit Industries, Inc. (1)
7,001,184 Slip ring with connector pins 3 2003
 
Other [Check patent profile for assignment information] (1)
6,603,233 Electrical generator 9 2002