Patents by Inventor Frans Harry Karlsson

Frans Harry Karlsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Valve with roller
    Patent number: 4019529
    Abstract: This invention relates to a valve having a valve member in the form of a roller supported by a roller support such that the roller when moved to closed position is forced against a valve seat and such that inlet pressure in said valve aids in maintaining said roller in a tight closed position, said valve preferably comprising a tubular valve housing having an axial inlet and a peripheral outlet.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: April 26, 1977
    Assignee: Hykon-Patent Aktiebolag
    Inventors: Per Torsten Faxen, Frans Harry Karlsson
  • Flushing and refilling apparatuses
    Patent number: 4011605
    Abstract: A flushing and refilling apparatus for use in a flushing cistern includes flushing and refilling valves, an overflow member and a common support having quick release coupling means for easy mounting and dismounting of said apparatus and said overflow member as a unit of assembled parts.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: March 15, 1977
    Assignee: Hykon-Patent Aktiebolag
    Inventors: Frans Harry Karlsson, Per Torsten Faxen
  • Flushing and refilling apparatus
    Patent number: 3969774
    Abstract: A flushing and refilling apparatus for use in a flushing cistern includes flushing and refilling valves, an overflow member and a common support having quick release coupling means for easy mounting and dismounting of said apparatus and said overflow member as a unit of assembled parts.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: July 20, 1976
    Assignee: Hykon-Patent Aktiebolag
    Inventor: Frans Harry Karlsson
  • Flushing cistern
    Patent number: 3934276
    Abstract: This invention provides an improved valve closing means for a refilling valve in flushing cisterns equipped with an overflow and refilling and flushing valves adapted to be opened by a lift stem, said valve closing means being mounted in said overflow and movable to an upper position for opening said valves by means of said lift stem and to a lower position for abrupt closure of the refilling valve by water flowing into the overflow when the cistern is refilled.
    Type: Grant
    Filed: May 21, 1973
    Date of Patent: January 27, 1976
    Assignee: Hykon-Patent Aktiebolag
    Inventors: Frans Harry Karlsson, Per Torsten Faxen