Patents by Inventor David G. Koland

David G. Koland 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: 4437205
    Abstract: A vacuum cleaner nozzle lift device for adjustably raising the front portion of the nozzle. The device includes a U-shaped front wheel assembly including a support having a rear bight pivotally mounted to the nozzle housing, a pair of forwardly extending legs, and wheels rotatably carried on the forward distal end portions of the legs. The front wheel height adjuster includes a lifter slidably embracing a leg of the support forwardly of the bight, the lifter being mounted to a rear portion of the housing adjacent the bight, a cam follower movable with the lifter, and a cam movably carried by the housing for camming engagement with the cam follower. A user-operated foot pedal selectively moves the cam against the cam follower for correspondingly swinging the support about the axis of the bight to selectively raise and lower the front wheels and thereby adjust the angular disposition of the nozzle housing relative to the subjacent surface.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: March 20, 1984
    Assignee: Whirlpool Corporation
    Inventor: David G. Koland
  • Patent number: 4397058
    Abstract: A furniture guard and bearing pad structure for use with a vacuum cleaner nozzle. The nozzle defines a laterally enlarged front portion. The furniture guard and bearing pad structure is defined by a bumper element which is preformed to closely fit the irregular shape of the nozzle. The bumper is provided with a plurality of T-section connectors retained in outwardly opening slots in the peripheral wall of the nozzle. Bearing pads are formed integrally with the bumper and, in the illustrated embodiment, include projecting portions received in recesses in the nozzle for accurately locating the bearing pads. In the illustrated embodiment, the sidewalls of the nozzle are provided with openings receiving portions of the vacuum cleaner projecting from the base of the nozzle. A rotatable beater brush is rotatably carried by the projecting portions.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: August 9, 1983
    Assignee: Whirlpool Corporation
    Inventor: David G. Koland