Patents by Inventor Per Willadsen

Per Willadsen 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).

  • Brick press and associated equipment for making bricks
    Patent number: 4164537
    Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: August 14, 1979
    Inventors: Frede H. Drostholm, Harry Jensen, Per Willadsen
  • Brick press and associated equipment for making bricks
    Patent number: 4050865
    Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: September 27, 1977
    Assignee: Frede Hilmar Drostholm
    Inventors: Frede Hilmar Drostholm, Harry Jensen, Per Willadsen
  • Brick press and associated equipment for making bricks
    Patent number: 4035128
    Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: July 12, 1977
    Assignee: Frede Hilmar Drostholm
    Inventors: Frede Hilmar Drostholm, Harry Jensen, Per Willadsen