Patents by Inventor Jason Elvers

Jason Elvers 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 lawn mower drive system
    Patent number: 8863485
    Abstract: A lawn mower includes an engine, an energy storage device, a motor/generator including an output shaft, an engine coupling, wherein, with the engine coupling disengaged, the motor/generator drives the output shaft, and with the engine coupling engaged, the engine or both the motor/generator and the engine drive the output shaft, a mower blade, a power take-off clutch, and a control unit configured to implement a first operating condition in which the engine coupling is disengaged, the engine is off, and the output shaft is driven by the motor/generator, and configured to implement a second operating condition in which the engine coupling is engaged, the engine is on, the output shaft is driven by the engine or both the motor/generator and the engine.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: October 21, 2014
    Assignee: Briggs & Stratton Corporation
    Inventors: Michael Pitcel, William Latus, Robert Koenen, David Procknow, Jeffrey Berger, Jason Elvers