of the Archimedes screw type

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Hollow turbine

    • Publication number 20110037265
    • Publication date Feb 17, 2011
    • William Sheridan Fielder
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Hollow generator

    • Publication number 20070216245
    • Publication date Sep 20, 2007
    • William Sheridan Fielder
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ribbon drive pumping apparatus and method with added fluid

    • Publication number 20040033142
    • Publication date Feb 19, 2004
    • Jonathan B. Rosefsky
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Application

    Ribbon drive pumping apparatus and method

    • Publication number 20020150465
    • Publication date Oct 17, 2002
    • Jonathan B. Rosefsky
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Ribbon drive pumping with centrifugal contaminant removal

    • Publication number 20020064465
    • Publication date May 30, 2002
    • Jonathan B. Rosefsky
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Ribbon drive power generation for variable flow conditions

    • Publication number 20020062644
    • Publication date May 30, 2002
    • Jonathan B. Rosefsky
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...