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Class Information
Number: 310/232
Name: Electrical generator or motor structure > Dynamoelectric > Rotary > Current collectors > Rotary structure > Slip rings
Description: Subject matter relating to slip rings.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8674581 Systems, methods, and apparatus for shorting slip rings of an induction motor Mar. 18, 2014
8558429 Systems, methods, and apparatus for lifting brushes of an induction motor Oct. 15, 2013
8531064 Ultrasonically powered surgical instruments with rotating cutting implement Sep. 10, 2013
8525383 Slip ring device and rotary electric machine using the same Sep. 3, 2013
8421286 Kit and method for attaching a grounding ring to an electrical motor Apr. 16, 2013
8344583 Slip ring cover for automotive alternator Jan. 1, 2013
8167623 Multi contact brush for slip rings May. 1, 2012
8148868 Slip ring assembly with cooling Apr. 3, 2012
8120228 Slip ring assembly Feb. 21, 2012
8106562 Slip ring assembly with shaft holder Jan. 31, 2012
7990016 Slip-ring module for a rotor of an electric machine electric machine with a slip ring module and method for production of a slip ring module Aug. 2, 2011
7915782 Electrical machine and method of retrofitting an electrical machine Mar. 29, 2011
7898140 Brushless slip ring for a wind turbine and method of assembly Mar. 1, 2011
7859152 Submersible direct-current electric motor Dec. 28, 2010
7774935 Method of manufacturing an electrically conductive element Aug. 17, 2010
7764002 Combination type slip ring Jul. 27, 2010
7750493 Wind turbine assemblies and slip ring assemblies for wind blade pitch control motors Jul. 6, 2010
7744374 Sliding contact retaining device Jun. 29, 2010
7701108 Combination-type collector ring unit Apr. 20, 2010
7602134 Twist capsule for rotatable payload Oct. 13, 2009
7545073 Fluid-dispensing reservoir for large-diameter slip rings Jun. 9, 2009
7532788 Contactless connector May. 12, 2009
7495366 Compact slip ring incorporating fiber-on-tips contact technology Feb. 24, 2009
7423359 Fluid-dispensing reservoir for large-diameter slip rings Sep. 9, 2008
7400077 Electric motor having multiple armatures Jul. 15, 2008
7394179 Alternator having a slip-ring cover connected to brush holder Jul. 1, 2008
7363399 Method, apparatus and computer program product providing storage network dynamic tuning of I/O flow with Queue Depth Apr. 22, 2008
7348700 Automotive alternator having water shield for protecting brushes from water damage Mar. 25, 2008
7339302 Electrical contact technology and methodology for the manufacture of large-diameter electrical slip rings Mar. 4, 2008
7307367 Slip-ring element and method for its manufacture Dec. 11, 2007
7285931 Brushless motor commutation and control Oct. 23, 2007
7274125 Current collector ring for a generator having balance resistors Sep. 25, 2007
7259494 Vehicular alternator with a pair of dissimiliar metal alloy collector rings Aug. 21, 2007
7169022 Method and apparatus for creating a groove in a collector ring of an electrical device Jan. 30, 2007
7119471 Direct drive high torque compact synchronous motor Oct. 10, 2006
7098568 Current-transfer assembly Aug. 29, 2006
7057315 Automotive alternator having cooling fan coupled to rotor shaft Jun. 6, 2006
7019431 Hydrodynamic slip ring Mar. 28, 2006
7005774 Rotary current-collecting device and rotating anode X-ray tube Feb. 28, 2006
6987344 High power rotary transformer with bus duct assembly Jan. 17, 2006
6984915 Electrical slip ring platter multilayer printed circuit board and method for making same Jan. 10, 2006
6949847 Rotary joint Sep. 27, 2005
6914362 Construction and mode of operation of opposite statorless electronically switched motors Jul. 5, 2005
6909217 Method for producing slip ring brushes and slip ring brushes made thereby Jun. 21, 2005
6903482 Electrical current collector cleaning and cooling for high voltage rotating machines Jun. 7, 2005
6861779 Slip ring brush assembly and method Mar. 1, 2005
6858966 Slip ring apparatus for an automotive alternator Feb. 22, 2005
6853111 Electric-machine-rotor having field coil and auxiliary permanent magnets amd method of manufacturing the same Feb. 8, 2005
6847138 Alternator field coil wire routing design Jan. 25, 2005
6828702 Brushless DC drive Dec. 7, 2004

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