IPC Main Group
H02K 13/00 Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- DYNAMO-ELECTRIC MACHINES
Additional Content
Supporting or protecting brushes or brush holders in motor casings or enclosures
Related Keywords
electric current DISTRIBUTORS (commutators) structurally associated with electric machines
5 direct subcodes
Child Classifications
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- H02K 13/02 Connections between slip-rings and windings
- H02K 13/04 Connections between commutator segments and windings
- H02K 13/1 Arrangements of brushes or commutators specially adapted for improving commutation
- H02K 13/12 Arrangements for producing an axial reciprocation of the rotor and its associated current collector part, e.g. for polishing commutator surfaces
- H02K 13/14 Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive elements
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094