Patents by Inventor Lars Schibbye

Lars Schibbye 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 system for capacity control of screw compressors
    Patent number: 4453900
    Abstract: The invention relates to a valve system for capacity control of an oil-injected screw compressor. One or more valves (17-20), preferably at least two valves, are located in the wall of the rotor barrel (12, 13). The pressure in the compressed-air tank of the compressor actuates control valves, which in their turn open or close the valves (17-20). When the valves are opened, a direct connection between two consecutive thread volumes of at least one of the rotors (14, 15) is established, whereby the closed space capable to be used for the internal compression, is reduced.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: June 12, 1984
    Assignee: Sullair Technology AB
    Inventors: Lars Schibbye, Arnold Englund