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Thomas J. Langenfeld

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  • Sullivan, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric motor and gear assembly
    • Patent number 11,346,439
    • Issue date May 31, 2022
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric motor and gear assembly
    • Patent number 11,338,669
    • Issue date May 24, 2022
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Electric drive assembly
    • Patent number 11,235,661
    • Issue date Feb 1, 2022
    • Hydro-Gear Limited Partnership
    • Nathan W. Bonny
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Fluid expansion tank
    • Patent number 11,215,275
    • Issue date Jan 4, 2022
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Steerable transaxle
    • Patent number 11,118,680
    • Issue date Sep 14, 2021
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Electric motor with compound planetary gear drive
    • Patent number 10,876,596
    • Issue date Dec 29, 2020
    • Hydro-Gear Limited Partnership
    • Nathan W. Bonny
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Drive apparatus
    • Patent number 10,793,002
    • Issue date Oct 6, 2020
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Transaxle having dual brake system
    • Patent number 10,539,163
    • Issue date Jan 21, 2020
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Drive device
    • Patent number 10,480,142
    • Issue date Nov 19, 2019
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Fluid expansion tank
    • Patent number 10,451,171
    • Issue date Oct 22, 2019
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydrostatic transmission
    • Patent number 10,352,421
    • Issue date Jul 16, 2019
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Steerable transaxle
    • Patent number 10,337,608
    • Issue date Jul 2, 2019
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Drive apparatus
    • Patent number 10,166,864
    • Issue date Jan 1, 2019
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic motor having a dual brake system
    • Patent number 10,059,313
    • Issue date Aug 28, 2018
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Drive assembly
    • Patent number 9,976,640
    • Issue date May 22, 2018
    • Hydro-Gear Limited Partnership
    • Nathan W. Bonny
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Drive device
    • Patent number 9,914,350
    • Issue date Mar 13, 2018
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic motor assembly
    • Patent number 9,879,671
    • Issue date Jan 30, 2018
    • Hydro-Gear Limited Partnership
    • Michael W. Taylor
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Transaxle having dual brake system
    • Patent number 9,816,536
    • Issue date Nov 14, 2017
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Vehicle with steering mechanism
    • Patent number 9,802,646
    • Issue date Oct 31, 2017
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Hydrostatic transmission
    • Patent number 9,664,270
    • Issue date May 30, 2017
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Steerable transaxle
    • Patent number 9,610,840
    • Issue date Apr 4, 2017
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Steerable transaxle
    • Patent number 9,598,103
    • Issue date Mar 21, 2017
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Transaxle fluid expansion and contraction accommodation apparatus
    • Patent number 9,469,191
    • Issue date Oct 18, 2016
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Valve
    • Patent number 9,410,631
    • Issue date Aug 9, 2016
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Three wheeled vehicle
    • Patent number 9,408,344
    • Issue date Aug 9, 2016
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Drive device
    • Patent number 9,371,865
    • Issue date Jun 21, 2016
    • Hydro-Gear Limited Partnership
    • Michael L. Bennett
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic motor having a dual brake system
    • Patent number 9,371,842
    • Issue date Jun 21, 2016
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Return to neutral device for a hydraulic apparatus
    • Patent number 9,328,611
    • Issue date May 3, 2016
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Transaxle having dual brake system
    • Patent number 9,163,724
    • Issue date Oct 20, 2015
    • Hydro-Gear Limited Partnership
    • Thomas J. Langenfeld
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Drive assembly
    • Patent number 9,139,086
    • Issue date Sep 22, 2015
    • Hydro-Gear Limited Partnership
    • Nathan W. Bonny
    • B60 - VEHICLES IN GENERAL