Patents by Inventor David William Downham

David William Downham 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).

  • Suction cleaner
    Patent number: 5991971
    Abstract: A suction cleaner includes a base unit (1) and a body unit (2) mounted on the base unit. The base unit (1) incorporates a downwardly-facing suction opening (1a) and the body unit (2) houses a dust-collection receptacle. The body unit (2) is provided with a pipe (7) for delivering dust-laden air from the base unit (1) to the dust-collection receptacle. The pipe (7) is made of a transparent material and is detachably mounted on the cleaner.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: November 30, 1999
    Assignee: Aktiebolaget Electrolux
    Inventor: David William Downham