Patents by Inventor Lars Erik A. E. Glas

Lars Erik A. E. Glas 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).

  • Vacuum toilet system with treated rinse liquid
    Patent number: 5692250
    Abstract: A vacuum toilet system comprises a toilet bowl having an outlet opening, a sewer pipe having an interior space, a discharge valve connecting the outlet opening of the toilet bowl to the sewer pipe, and a source of partial vacuum for establishing a lower pressure in the interior space of the sewer pipe than in the toilet bowl. A nozzle defines a rinse liquid outlet for introducing liquid into the toilet bowl. A container for reagent is in communication with the rinse liquid outlet. Reagent is introduced into the toilet bowl by way of the rinse liquid outlet in timed relationship to introduction of rinse liquid into the toilet bowl.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: December 2, 1997
    Assignee: Oy Wartsila Ab
    Inventors: Sven Oldfelt, Gary L. Stahl, Paul L. Dubler, Lars Erik A. E. Glas, Anders G. Ostman