Patents by Inventor Mark C. Hersch

Mark C. Hersch 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).

  • Air flow measurement
    Patent number: 8006571
    Abstract: An arrangement for measuring air flow includes a source of measurement values and a processing unit. The source of measurement values is operable to generate measurement values representative of a difference in pressure from air obtained on a first side of an obstruction and air obtained on a second side of the obstruction. The processing unit is configured to, in one case, convert any negative measurement values of the measurement values to a less negative value. The processing unit is further configured to perform low pass filtering on the measurement values and convert the filtered measurement values to a flow value.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: August 30, 2011
    Assignee: Siemens Industry, Inc.
    Inventors: Mark C. Hersch, Howard St. John, Kevin Johnson
  • Air flow measurement
    Publication number: 20090071241
    Abstract: An arrangement for measuring air flow includes a source of measurement values and a processing unit. The source of measurement values is operable to generate measurement values representative of a difference in pressure from air obtained on a first side of an obstruction and air obtained on a second side of the obstruction. The processing unit is configured to, in one case, convert any negative measurement values of the measurement values to a less negative value. The processing unit is further configured to perform low pass filtering on the measurement values and convert the filtered measurement values to a flow value.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 19, 2009
    Inventors: Mark C. Hersch, Kevin Johnson, Howard St. John