Patents by Inventor Duaine W. Smith

Duaine W. Smith 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: 4521658
    Abstract: Microwave oven scale apparatus for coupling weight from the cavity and for providing a weight corresponding signal. The weight corresponding signal is used by a microcomputer to compute cooking times. Microwave transparent posts insert through holes in the floor of the cavity and support a tray on which the food is positioned. The posts respectively screw down on unitary studs that have legs which straddle a pivot member of the scale. The height of the studs can be adjusted by rotation on the studs. The studs are aligned vertically and horizontally by connection to a frame positioned below the cavity floor. The scale includes two parallel rails that are pivotally supported on their outward edges and have inwardly directed extender arms which couple together at a location where they are supported by a compliant member.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: June 4, 1985
    Assignee: Amana Refrigeration, Inc.
    Inventors: Alvin D. Wyland, Duaine W. Smith, Louis W. Blackburn
  • Patent number: 4335289
    Abstract: A microwave oven cavity of a microwave oven having an antenna assembly axially supported on one wall of the cavity. The antenna assembly includes an antenna rotating assembly having a bushing mounted in the wall, a bearing axially supported in the bushing, a probe antenna supported in a bearing and extending into the cavity, a directional rotating antenna attached to the probe antenna, and an antenna rotor having a plurality of turbine vanes affixed to the directional rotating antenna which axially drive the directional rotating antenna when forced by air flow velocity circulated through the cavity. The antenna rotating assembly, the directional antenna, and the antenna rotor are integrated for installation and removal from within the confines of the cavity. The antenna assembly engages and locks in position in the wall of the cavity.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: June 15, 1982
    Assignee: Amana Refrigeration, Inc.
    Inventor: Duaine W. Smith