Patents by Inventor Keith Kolb

Keith Kolb 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).

  • EVSE welded contactor detector
    Patent number: 10802083
    Abstract: In at least one embodiment, provided is an electric vehicle supply equipment having a line power contactor including a first line power input and a second line power input and a first line power output and a second line power output. It further has a welded contactor detector with a contactor sense circuit, the sense circuit having a first line shunt resistor network connected from the first line power contactor output to ground and a second line shunt resistor network connected from the first line power contactor output to ground. In another embodiment provided is an EVSE including a welded contactor detector with a contactor sense circuit having a bias resistor connected between the hot line relay input and the neutral line relay output.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: October 13, 2020
    Assignee: Webasto Charging Systems, Inc.
    Inventors: Scott Garret Berman, Albert Flack, Keith Kolb, Ming Bai
  • EVSE WELDED CONTACTOR DETECTOR
    Publication number: 20150115966
    Abstract: In at least one embodiment, provided is an electric vehicle supply equipment having a line power contactor including a first line power input and a second line power input and a first line power output and a second line power output. It further has a welded contactor detector with a contactor sense circuit, the sense circuit having a first line shunt resistor network connected from the first line power contactor output to ground and a second line shunt resistor network connected from the first line power contactor output to ground. In another embodiment provided is an EVSE including a welded contactor detector with a contactor sense circuit having a bias resistor connected between the hot line relay input and the neutral line relay output.
    Type: Application
    Filed: May 24, 2013
    Publication date: April 30, 2015
    Applicant: AeroVironment, Inc.
    Inventors: Scott Garret Berman, Albert Flack, Keith Kolb, Ming Bai