Patents by Inventor Eric Steven Schaeffer

Eric Steven Schaeffer 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).

  • Motor vehicle electrical system with multiple generators
    Patent number: 6369549
    Abstract: A motor vehicle charging system comprises a first alternator including a first power output and a discrete alternator enabling input, a second alternator including a second power output and an electronic controller having a switchable output. The switchable output is coupled to the alternator enabling input. A method for controlling a motor vehicle charging system having a first alternator, a second alternator and a source of switched system voltage having an ON state and an OFF state comprises providing continual enabling power to the first alternator whenever the source of system voltage is in the ON state. The method also includes providing switchable enabling power to the second alternator whenever the source of system voltage is in the ON state.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: April 9, 2002
    Assignee: Ford Global Tech., Inc.
    Inventors: Thomas Edward Brefeld, Eric Steven Schaeffer, David Paul Kaminski