Patents by Inventor Ken Dunn

Ken Dunn 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: 5447020
    Abstract: A grass cutting machine comprising a chassis including a chamber for receiving a cushion of air for supporting the chassis, a cutting member, a power source, a drive line for drivingly connecting the power source and the cutting member, a source of pressure air, and a grass collection device. The collection device comprises a receptacle for receiving cut grass and includes a base wall, an upper wall, and at least one side wall. The receptacle has at least one inlet disposed externally of the chamber and in the region of the base wall for entry of cut grass entrained in a stream of air directly into the receptacle part of at least the base wall includes an air permeable region to retain cut grass in the receptacle and to permit the said stream of air to be drawn through cut grass retained in the receptacle and through the air permeable region in the bases wall so as, to filter the air stream and compact the cut grass in the receptacle.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: September 5, 1995
    Assignee: Electrolux Outdoor Products Limited
    Inventor: Ken Dunn
  • Patent number: 5317860
    Abstract: A grass cutting machine includes a grass cutter, a motor for driving the grass cutter, a housing for supporting the machine above ground datum, collector for collecting grass cut by cutter, and a fan for establishing a flow of air. The collector for cut grass further includes a duct for directing cut grass entrained in a stream of air from the fan. The duct has a collection mouth at an upstream end thereof and disposed in the region of the ground datum, thereof, and a downstream end of the duct connected to the collector. At least one air-outlet aperture is disposed in the region of the collection mouth, each aperture serving to direct at least a portion of the stream of air downstream from the collection mouth so as to draw into the mouth cut grass and to transport the cut grass through the duct to the collector.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: June 7, 1994
    Assignee: Electrolux Northern Limited
    Inventor: Ken Dunn
  • Patent number: 5224326
    Abstract: This invention relates to rotary-type lawn mowers which may be supported on either a cushion of air (a hover mower) or on a wheeled/roller system.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: July 6, 1993
    Assignee: Electrolux Northern Limited
    Inventor: Ken Dunn
  • Patent number: 5113642
    Abstract: This invention relates to grass cutting appliances. In particular a grass cutting appliance in the form of a lawn mower comprises a hood, a cutting member for rotation in a substantially horizontal plane within the hood, a handle for controlling directional movement of the appliance during a cutting operation, a power source disposed remotely from the cutting member and supported from the handle, and a drive line for drivingly connecting the power source and the cutting member.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: May 19, 1992
    Assignee: Electrolux Northern Limited
    Inventor: Ken Dunn