Patents by Inventor Leslie Flint

Leslie Flint 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).

  • Air supply units
    Patent number: 4320755
    Abstract: A main casing 34 contains a centrifugal fan 10, a filter unit 12 upstream, and a duct 14 downstream for guiding air to a face mask. There is a center plate 36 to which a motor 18, the fan 10, a battery 20 etc. are secured. A back plate 32 is removable to provide access to the electrical components. The filter unit 12 is held in position by an apertured cap 24.
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: March 23, 1982
    Assignee: Marwin Foundry Units Limited
    Inventors: Leslie Flint, Malcolm P. Brown