Patents by Inventor Robert A. Colwell

Robert A. Colwell 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: 5375651
    Abstract: A draft inducer blower motor mounting and cooling construction comprising an electric motor including a housing having openings therein and a rotor mounted on a shaft, a fan blade fixed on the shaft and interposed between the motor and the draft inducer blower, and a heat shield interposed between the motor housing and the fan blade. The heat shield is fastened to the electric motor and to the housing of the inducer blower and has portions spaced from the blower housing. The heat shield further preferably includes a portion surrounding at least a part of the motor housing such that rotation of the fan blade draws cooling air through the electrical motor and about the housing of the electric motor and thereafter radially outwardly between the heat shield and the inducer blower housing to cool the electric motor and the shaft end bearing nearest the inducer housing. In another form, the portion surrounding the motor may be eliminated.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: December 27, 1994
    Assignee: Magnetek Universal Electric
    Inventor: Robert A. Colwell
  • Patent number: 4877984
    Abstract: An electric motor and pump mounting bracket assembly comprising an electric motor and a bracket fastened to the motor for supporting a pump which is driven by the shaft of the electric motor. The electric motor comprises a cylindrical shell which encircles the stator of the motor and a pair of end members engage surfaces on the shell which are accurately positioned longitudinally of the shell relative to one another and relative to the axis of the shell. The end members rotatably support a shaft in concentric relation to the shell. The pump mounting bracket includes a planar surface that is accurately located parallel to and a predetermined accurate distance from the centerline of the shell to form the mounting surface for the pump. The bracket further includes an opening through which the connecting link to the shaft of the motor extends. The accurate surfaces on shell are in predetermined longitudinally spaced relation to the centerline of the opening in the bracket.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: October 31, 1989
    Assignee: MagneTek Universal Electric
    Inventors: Robert A. Colwell, Thomas W. Stone