Patents by Inventor David Burnham

David Burnham 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).

  • Patent number: 8508898
    Abstract: Systems and methods of diagnosing a condition of a reverse-voltage protection switch in an electric system. The electric system includes a power source, an electric load, and a reverse-voltage protection switch in a series-type configuration. The electric system further includes a ground switch configured to selectively connect the source terminal of the reverse-voltage protection circuit to ground. The terminals of the reverse-voltage protection circuit are disconnected from the power source. The ground switch is closed to connect one terminal of the reverse-voltage protection switch to ground. A bias voltage is applied to the other terminal of the reverse-voltage protection switch and the reverse-voltage protection switch is opened. An improper short-circuit condition across the reverse-voltage protection switch is detected when the voltage at the biased terminal of the reverse-voltage protection switch is less than a threshold when the reverse-voltage protection switch is opened.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: August 13, 2013
    Assignee: Robert Bosch GmbH
    Inventors: David Burnham, Michael R. Meier
  • Publication number: 20130176651
    Abstract: Systems and methods of diagnosing a condition of a reverse-voltage protection switch in an electric system. The electric system includes a power source, an electric load, and a reverse-voltage protection switch in a series-type configuration. The electric system further includes a ground switch configured to selectively connect the source terminal of the reverse-voltage protection circuit to ground. The terminals of the reverse-voltage protection circuit are disconnected from the power source. The ground switch is closed to connect one terminal of the reverse-voltage protection switch to ground. A bias voltage is applied to the other terminal of the reverse-voltage protection switch and the reverse-voltage protection switch is opened. An improper short-circuit condition across the reverse-voltage protection switch is detected when the voltage at the biased terminal of the reverse-voltage protection switch is less than a threshold when the reverse-voltage protection switch is opened.
    Type: Application
    Filed: January 11, 2012
    Publication date: July 11, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: David Burnham, Michael R. Meier
  • Patent number: 8412411
    Abstract: An electronic control module for a vehicle. The electronic control module includes a housing, a temperature sensor positioned in the housing, and a controller positioned in the housing and coupled to the temperature sensor. The controller includes a processor, a memory, and a plurality of switches. The controller performs a first function related to a comfort level of an occupant of the vehicle at a first level of functionality. The controller also detects a temperature in the housing, and modifies the first function when the detected temperature exceeds a temperature threshold. The modification of the first function reduces a quantity of heat generated by the controller.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: April 2, 2013
    Assignee: Robert Bosch GmbH
    Inventor: David Burnham
  • Publication number: 20110144860
    Abstract: An electronic control module for a vehicle. The electronic control module includes a housing, a temperature sensor positioned in the housing, and a controller positioned in the housing and coupled to the temperature sensor. The controller includes a processor, a memory, and a plurality of switches. The controller performs a first function related to a comfort level of an occupant of the vehicle at a first level of functionality. The controller also detects a temperature in the housing, and modifies the first function when the detected temperature exceeds a temperature threshold. The modification of the first function reduces a quantity of heat generated by the controller.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Applicant: ROBERT BOSCH GMBH
    Inventor: David Burnham
  • Patent number: 5134838
    Abstract: A grass pick-up broom for riding, walk-behind and tow-behind mowers includes a cylindrical sleeve rotatably mounted on a rear axle of a mower and having spaced elongate brushes fixedly attached to the sleeve and extending radially therefrom. The sleeve is connected by a belt to a rotary cutting blade powered by an engine mounted on the mower. When the cutting blade is engaged, the sleeve automatically rotates about the axle causing the brushes to rotate thereabout, propelling grass clippings and other debris into a grass catcher located behind the broom. The brushes of the broom also comb the surface of the newly cut grass, picking up grass clippings and other heavier debris and transfering the debris to the grass catcher.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: August 4, 1992
    Assignee: Swisher Mower and Machine Co., Inc.
    Inventors: Max B. Swisher, David Burnham
  • Patent number: 4949698
    Abstract: A bowstring release device for archery has a barrel with a notch at its distal end, and a pivotally mounted bail at the barrel distal end with a cam surface and a finger that projects across the notch to retain the bowstring. A release pin is slidably fitted in the barrel, and has a nose that is biased distally against the bail cam surface. The release pin has front and back cutouts that are axially spaced on the pin. A two part trigger assembly has a back trigger section and a front trigger section that are pivotally mounted on to the barrel, with the back and front sections each having an engaging tooth or sear to fit into a respective one of the release pin recess. The span between the trigger teeth is greater than the span between the two recess. The release is actuated by first pulling back on the trigger, and then gradually relaxing the finger pressure until both of the latch teeth are disengaged from the release pin.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: August 21, 1990
    Assignee: Oneida Labs, Inc.
    Inventor: David Burnham