Patents by Inventor Michael Ledford

Michael Ledford 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: 11079118
    Abstract: A combined ventilation hood and microwave oven system (10) with an overall vertical dimension (30) is provided, which is smaller than a conventional combined ventilation hood and microwave oven. One or more vent hood fans (66;74) are disposed on lateral sides of a microwave coo-king cavity (34) to draw in exhaust air (92;93) through one or more vent inlets (54;56;158;160) disposed on a bottom surface (20;156) and expel the exhaust air (92;93;162) through one or more vent outlets (46;52) defined on a surface of an outer wrapper (80) of the combined system. The low-profile combined ventilation hood and microwave oven system is coupled with a modular heating system (150;180) for heating food, which provides both functions within the space typically required by the conventional combined ventilation hood and microwave oven.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 3, 2021
    Assignee: Whirlpool Corporation
    Inventors: Owen Zhang, Michael Ledford, Xiangxu Liu, Stephen Zheng
  • Publication number: 20190113241
    Abstract: A combined ventilation hood and microwave oven system (10) with an overall vertical dimension (30) is provided, which is smaller than a conventional combined ventilation hood and microwave oven. One or more vent hood fans (66;74) are disposed on lateral sides of a microwave coo-king cavity (34) to draw in exhaust air (92;93) through one or more vent inlets (54;56;158;160) disposed on a bottom surface (20;156) and expel the exhaust air (92;93;162) through one or more vent outlets (46;52) defined on a surface of an outer wrapper (80) of the combined system. The low-profile combined ventilation hood and microwave oven system is coupled with a modular heating system (150;180) for heating food, which provides both functions within the space typically required by the conventional combined ventilation hood and microwave oven.
    Type: Application
    Filed: April 11, 2017
    Publication date: April 18, 2019
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Owen Zhang, Michael Ledford, Xiangxu Liu, Stephen Zheng
  • Publication number: 20060169961
    Abstract: An improved winch assembly adaptably configured for use with a new or existing lift structure suitably dedicated for short- and long-term storage of a recreational boat and related watercraft. The winch assembly comprises three drive assemblies housed and mounted within a chassis. The first drive assembly comprises a first plate sprocket and a pair of cable guards collectively mounted onto a cable hub to form a spool assembly for accepting and winding thereon a predetermined length of cabling. The second drive assembly comprises a stepped hub having three discrete cylindrical surfaces to form first and second annular walls for mounting thereagainst primary and secondary plate sprockets and an inner bore extending therethrough for receiving therein an intermediate axle having ends affixed to the chassis, wherein the primary plate sprocket is connectively coupled with the first plate sprocket by a drive chain.
    Type: Application
    Filed: October 1, 2005
    Publication date: August 3, 2006
    Inventor: Michael Ledford