Patents by Inventor Eric Walstra

Eric Walstra 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).

  • Publication number: 20080103655
    Abstract: A vehicle communication and control system is provided that may be more readily installed in a vehicle and that utilizes minimal additional wiring. According to some of the disclosed embodiments, the electrical components of the “brick” of a communication and control system are integrated into a rearview mirror assembly. Preferably, the microwave antenna for the GPS and the cellular telephone antenna are also integrated into the rearview mirror assembly. Various functions and features of the system are also disclosed.
    Type: Application
    Filed: January 3, 2008
    Publication date: May 1, 2008
    Applicant: GENTEX CORPORATION
    Inventors: Robert Turnbull, Robert Knapp, Eric Walstra, Alan Watson, G. Poe, John Roberts, Wayne Rumsey
  • Publication number: 20070182248
    Abstract: According to one embodiment of the present invention, a power supply circuit is provided for selectively supplying power to a vehicle accessory. The power supply circuit may be comprised of a switch coupled to a power line from the vehicle battery and to a power input of the accessory, and a control circuit coupled to the switch. The control circuit may monitor the battery voltage and selectively supply power from the battery to the accessory in response to the battery voltage. The control circuit may supply power from the battery to the accessory when the battery voltage changes at least a predetermined amount over a time period. The control circuit may comprise a microprocessor that adaptively learns signatures in the battery voltage occurring when the engine is running in order to provide power from the battery to the accessory as if the power were supplied from the ignition.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 9, 2007
    Inventors: David Blaker, Robert Turnbull, Eric Walstra, Frederick Bauer
  • Publication number: 20060106518
    Abstract: The present invention provides improvements in vehicle vision system components, vehicle vision systems and vehicle equipment control systems employing the vision system components and vision systems.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Inventors: Joseph Stam, Gregory Bush, Timothy DeBruine, Eric Walstra
  • Publication number: 20060097855
    Abstract: A vehicle communication and control system is provided that may be more readily installed in a vehicle and that utilizes minimal additional wiring. According to some of the disclosed embodiments, the electrical components of the “brick” of a communication and control system are integrated into a rearview mirror assembly. Preferably, the microwave antenna for the GPS and the cellular telephone antenna are also integrated into the rearview mirror assembly. Various functions and features of the system are also disclosed.
    Type: Application
    Filed: December 22, 2005
    Publication date: May 11, 2006
    Inventors: Robert Turnbull, Robert Knapp, Eric Walstra, Alan Watson, G. Poe, John Roberts, Wayne Rumsey