Patents by Inventor Douglas W. Broomfield

Douglas W. Broomfield 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: 5052147
    Abstract: Apparatus, especially hand-held, battery-powered apparatus, for the collection and disposal of insects through an open end thereof. In one embodiment, which may be in the form of an attachment for a conventional battery-powered vacuum cleaner, the insect is retained on a screen (15) mounted on a carriage (14) which is movable between rear and front positions within a housing (17). The front position is close to the open end, and after collecting the insect with the carriage in the rear position, the carriage is moved to the front position, where it is brought to an abrupt stop so that the insect is ejected from the apparatus. The ejection of the insect can alternatively or additionally be assisted by reversing the direction of the air flow through the open end.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: October 1, 1991
    Inventors: Jack M. Broomfield, Douglas W. Broomfield
  • Patent number: 4780986
    Abstract: Apparatus, especially hand-held, battery-powered apparatus, for the collection and disposal of insects through an open end thereof. In one embodiment, which may be in the form of an attachment for a conventional battery-powered vacuum cleaner, the insect is retained on a screen mounted on a carriage which is movable between rear and front positions within a housing. The front position is close to the open end, and after collecting the insect with the carriage in the rear position, the carriage is moved to the front position, where it is brought to an abrupt stop so that the insect is ejected from the apparatus. The ejection of the insect can alternatively or additionally be assisted by reversing the direction of the air flow through the open end.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: November 1, 1988
    Inventors: Jack M. Broomfield, Douglas W. Broomfield