Patents by Inventor Donald James Duncalf

Donald James Duncalf 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).

  • Hybrid vehicles with radial engines
    Patent number: 9617854
    Abstract: A radial cam engine with an optimized cam configuration can provide improve performance over crankshaft internal combustion engines. The cam configuration can include a flat-top or flat bottom piston motion, multiple lobe cam configurations, matching piston force with torque/force ratio in combustion phase, asymmetry piston motions for improved power transfer during combustion phase, and/or offset piston and cam configurations. The radial cam engine can be used in vehicles, such as hybrid vehicles.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: April 11, 2017
    Inventors: Tai Dung Nguyen, Tue Nguyen, Donald James Duncalf
  • Hybrid Vehicles with Radial Engines
    Publication number: 20160230556
    Abstract: A radial cam engine with an optimized cam configuration can provide improve performance over crankshaft internal combustion engines. The cam configuration can include a flat-top or flat bottom piston motion, multiple lobe cam configurations, matching piston force with torque/force ratio in combustion phase, asymmetry piston motions for improved power transfer during combustion phase, and/or offset piston and cam configurations. The radial cam engine can be used in vehicles, such as hybrid vehicles.
    Type: Application
    Filed: April 18, 2016
    Publication date: August 11, 2016
    Inventors: Tai Dung Nguyen, Tue Nguyen, Donald James Duncalf
  • Hybrid vehicles with radial engines
    Patent number: 9316101
    Abstract: A radial cam engine with an optimized cam configuration can provide improve performance over crankshaft internal combustion engines. The cam configuration can include a flat-top or flat bottom piston motion, multiple lobe cam configurations, matching piston force with torque/force ratio in combustion phase, asymmetry piston motions for improved power transfer during combustion phase, and/or offset piston and cam configurations. The radial cam engine can be used in vehicles, such as hybrid vehicles.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: April 19, 2016
    Inventors: Tai Dung Nguyen, Tue Nguyen, Donald James Duncalf
  • Hybrid Vehicles with Radial Engines
    Publication number: 20140360446
    Abstract: A radial cam engine with an optimized cam configuration can provide improve performance over crankshaft internal combustion engines. The cam configuration can include a flat-top or flat bottom piston motion, multiple lobe cam configurations, matching piston force with torque/force ratio in combustion phase, asymmetry piston motions for improved power transfer during combustion phase, and/or offset piston and cam configurations. The radial cam engine can be used in vehicles, such as hybrid vehicles.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 11, 2014
    Applicant: THIEN TON CONSULTING SERVICES COMPANY LIMITED
    Inventors: Tai Dung Nguyen, Tue Nguyen, Donald James Duncalf
  • Hybrid vehicles with radial engines
    Patent number: 8770158
    Abstract: A radial cam engine with an optimized cam configuration can provide improve performance over crankshaft internal combustion engines. The cam configuration can include a flat-top or flat bottom piston motion, multiple lobe cam configurations, matching piston force with torque/force ratio in combustion phase, asymmetry piston motions for improved power transfer during combustion phase, and/or offset piston and cam configurations. The radial cam engine can be used in vehicles, such as hybrid vehicles.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 8, 2014
    Assignee: Thien Ton Consulting Services Co., Ltd.
    Inventors: Tai Dung Nguyen, Tue Nguyen, Donald James Duncalf