Patents by Inventor John B. Mallow

John B. Mallow 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: 5099545
    Abstract: A vacuum cleaner includes a motor, a housing enclosing the motor, a fan driven by the motor for producing a vacuum, a canister removably attached to the front end of the housing and having an intake nozzle for reception of foreign matter, liquid and air drawn into the canister in response to the vacuum developed by the fan. The intake nozzle includes a converging section extending from the front of the nozzle towards the center thereof and a diverging section extending from the terminus of the converging section towards the terminus of the nozzle. A squeegee is disposed in said nozzle and has a main body portion including at least one flow passage defined by a forward converging section terminating in a generally constant diameter section. The end of said constant diameter section is generally aligned with the terminus of the converging section of the nozzle. A flapper valve overlies the end of said constant diameter section of said squeegee and is integrally molded with said main body portion.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: March 31, 1992
    Assignee: Black & Decker Inc.
    Inventors: Charles Z. Krasznai, John B. Mallow