Patents by Inventor Walter G. Azelkas

Walter G. Azelkas 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).

  • Patent number: 3966444
    Abstract: A lightweight vacuum cleaner having a hollow body with an intake nozzle and a nozzle support tube at one end, a suction creating means removably latched at the other end, and a filter bag assembly positioned in a compartment therebetween. The filter bag assembly includes a sealing and support plate having an integral guide tube for receiving the nozzle support tube through one end and a substantially U-shaped frame. An air permeable filter bag having a neck and a tubular body communicating with the interior of a main bag body is positioned between the legs of the U-shaped frame with the tubular neck removably secured about the guide tube.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: June 29, 1976
    Assignee: The Singer Company
    Inventors: Earl R. Clowers, Walter G. Azelkas