Patents by Inventor Paul Wallstro/ m

Paul Wallstro/ m 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).

  • Electrical control device
    Patent number: 5495626
    Abstract: A vacuum sewer toilet system comprises a toilet compartment, a toilet bowl installed in the toilet compartment, a vacuum sewer, at least one electrically operated device for initiating an emptying and rinsing operation of the toilet bowl, and electrical components for controlling supply of operating current to the electrically operated device. The electrical components are incorporated in a control unit that is sealed against humidity and is protected against unauthorized human access. The control unit is mounted in the toilet compartment at a location that is spaced from the toilet bowl.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: March 5, 1996
    Assignee: Evac AB
    Inventors: Gunnar Lindroos, Paul Wallstro/ m