Patents Assigned to Northern Indiana Public Service Company
  • Regasifier
    Patent number: 4914275
    Abstract: An apparatus for regasifying liquified products such as natural gas includes an outer pressure vessel, an inner vessel for receiving liquified gas and a plurality of individually controllable heating assemblies stacked within the inner vessel. Each of the heating assemblies includes a plurality of sets of heating coils constructed for promoting the flow of liquified gas therethrough in a manner for enhancing the efficiency of the heating and regasifying operation.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: April 3, 1990
    Assignee: Northern Indiana Public Service Company
    Inventor: Robert A. Kramer
  • Method and apparatus for accurately measuring volume of gas flowing as a result of differential pressure
    Patent number: 4646940
    Abstract: A method of accurately measuring volume of gas flowing through a conduit as a result of differential pressure of the gas within the conduit is disclosed. The method comprises determining flow of the gas through the conduit, and terminating flow of the gas through the conduit when the differential pressure is a preselected value. The gas flow and the resulting determination of gas volume are preferably referenced to standard temperature and pressure. Also disclosed is an apparatus for effecting the method.
    Type: Grant
    Filed: May 16, 1984
    Date of Patent: March 3, 1987
    Assignee: Northern Indiana Public Service Company
    Inventors: Robert A. Kramer, Terrance P. Rusk, David W. Salmons