by changing the effective cross sectional piston working surface

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic motor

    • Patent number 4,318,336
    • Issue date Mar 9, 1982
    • Rudolf Bock
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Hydrostatic motor

    • Patent number 4,259,894
    • Issue date Apr 7, 1981
    • Institul de Cercetari si Proiectari pentru Utulaje de Constructii de Drumuri...
    • Stefanica Arama
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    3396633

    • Patent number 3,396,633
    • Issue date Aug 13, 1968
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...