Motors specially adapted for running on dc or ac by choice

Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum cleaner and system operable with AC and DC power sources

    • Patent number 11,510,540
    • Issue date Nov 29, 2022
    • Emerson Electric Co.
    • Matthew A. Williams
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Power tool

    • Patent number 10,903,730
    • Issue date Jan 26, 2021
    • Nanjing Chervon Industry Co., Ltd.
    • Qian Xu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power tool

    • Patent number 10,868,462
    • Issue date Dec 15, 2020
    • Positec Power Tools (Suzhou) Co., Ltd.
    • Guoliang Mou
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Upright vacuum cleaner and system operable with AC and DC power sou...

    • Patent number 10,413,146
    • Issue date Sep 17, 2019
    • Emerson Electric Co.
    • Matthew A. Williams
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Pitch drive device for a wind power or hydroelectric power station

    • Patent number 9,203,290
    • Issue date Dec 1, 2015
    • Moog Unna GmbH
    • Tobias Roesmann
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Universal motor

    • Patent number 9,099,911
    • Issue date Aug 4, 2015
    • Johnson Electric S.A.
    • Bao Ting Liu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric motor having primary and auxiliary poles and brush gear

    • Patent number 8,525,382
    • Issue date Sep 3, 2013
    • Johnson Electric S.A.
    • Yue Li
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric motor

    • Patent number 8,405,273
    • Issue date Mar 26, 2013
    • Johnson Electric S.A.
    • Yue Li
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Immersed windings, monopole field, electromagnetic rotating machine

    • Patent number 7,834,503
    • Issue date Nov 16, 2010
    • Clearwater Holdings, Ltd
    • Dumitru Bojiuc
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Monopole field electric motor-generator with switchable coil config...

    • Patent number 7,348,703
    • Issue date Mar 25, 2008
    • Dumitru Bojiuc
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rechargeable vacuum with reduced AC voltage

    • Patent number 7,345,437
    • Issue date Mar 18, 2008
    • Shop-Vac Corporation
    • Mark E. Baer
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Signaling and reduced torque ripple in brushless repulsion motors

    • Patent number 7,166,984
    • Issue date Jan 23, 2007
    • Dynamotors, Inc.
    • William Jones
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Commutator motor

    • Patent number 6,737,779
    • Issue date May 18, 2004
    • Matsushita Electric Works, Ltd.
    • Tsutomu Natsuhara
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Hybrid AC/DC motor

    • Patent number 6,172,437
    • Issue date Jan 9, 2001
    • Black & Decker Inc.
    • Hung T. Du
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC/DC air pump

    • Patent number 5,102,306
    • Issue date Apr 7, 1992
    • Kuo-Sheng Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3691441

    • Patent number 3,691,441
    • Issue date Sep 12, 1972
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2302609

    • Patent number 2,302,609
    • Issue date Nov 17, 1942
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2207304

    • Patent number 2,207,304
    • Issue date Jul 9, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    1502958

    • Patent number 1,502,958
    • Issue date Jul 29, 1924
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    VACUUM CLEANER AND SYSTEM OPERABLE WITH AC AND DC POWER SOURCES

    • Publication number 20190350424
    • Publication date Nov 21, 2019
    • Emerson Electric Co.
    • Matthew A. Williams
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    POWER TOOL

    • Publication number 20190229599
    • Publication date Jul 25, 2019
    • Nanjing Chervon Industry Co., Ltd.
    • Qian Xu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    UPRIGHT VACUUM CLEANER AND SYSTEM OPERABLE WITH AC AND DC POWER SOU...

    • Publication number 20180353037
    • Publication date Dec 13, 2018
    • Emerson Electric Co.
    • Matthew A. Williams
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    POWER TOOL

    • Publication number 20180241291
    • Publication date Aug 23, 2018
    • Positec Power Tools (Suzhou) Co., Ltd
    • Guoliang MOU
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Tool

    • Publication number 20180175757
    • Publication date Jun 21, 2018
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Oil Lubricated Compressor

    • Publication number 20170101985
    • Publication date Apr 13, 2017
    • Black & Decker Inc.
    • Stephen J. Vos
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PITCH DRIVE DEVICE FOR A WIND POWER OR HYDROELECTRIC POWER STATION

    • Publication number 20120294716
    • Publication date Nov 22, 2012
    • Moog Unna GmbH
    • Tobias Roesmann
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    UNIVERSAL MOTOR

    • Publication number 20120025656
    • Publication date Feb 2, 2012
    • Bao Ting Liu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Motor with Three-In-One Operation

    • Publication number 20110232318
    • Publication date Sep 29, 2011
    • Molon Motor and Coil Corporation
    • Emilio A. Ramirez, JR.
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    MOTOR

    • Publication number 20100295404
    • Publication date Nov 25, 2010
    • Yue LI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC MOTOR

    • Publication number 20090302704
    • Publication date Dec 10, 2009
    • Yue LI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Immersed windings, monopole field, electromagnetic rotating machine

    • Publication number 20080164779
    • Publication date Jul 10, 2008
    • Dumitru Bojiuc
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Rechargeable vacuum with reduced AC voltage

    • Publication number 20070145917
    • Publication date Jun 28, 2007
    • SHOP-VAC CORPORATION
    • Mark E. Baer
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    Monopole field electric motor generator

    • Publication number 20060038456
    • Publication date Feb 23, 2006
    • Dumitru Bojiuc
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Monopole field electric motor-generator with switchable coil config...

    • Publication number 20060038460
    • Publication date Feb 23, 2006
    • Dumitru Bojiuc
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Commutator motor

    • Publication number 20030057788
    • Publication date Mar 27, 2003
    • Tsutomu Natsuhara
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER