Patents by Inventor Owen Lewis Richardson

Owen Lewis Richardson 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).

  • Dust extractor
    Patent number: 5688082
    Abstract: A dust extraction housing for a rotary drill has a rear collar 10 which attaches to a stationary boss 14 of the drill and a concertina tube 18 extending forward to enclose the drill bit 22. A forward end piece 24 of the housing has an outlet 26 for attachment of a vacuum source and an air inlet 34 fitted with a removable filter 36.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: November 18, 1997
    Inventor: Owen Lewis Richardson
  • Attachment for power tool (dust suppression housing)
    Patent number: D392531
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: March 24, 1998
    Inventor: Owen Lewis Richardson