Patents by Inventor Malcolm W. Cornforth

Malcolm W. Cornforth 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: 4674316
    Abstract: A calibration system for a mechanical gas volume corrector which has a first shaft turned at a rate corresponding to the otherwise uncorrected volumetric flow rate through the meter, a second shaft, a variable ratio transmission coupled between the first and second shafts, and a mechanism for altering the ratio of the transmission in response to changes of a physical condition of the gas. The calibration system includes an arrangement for applying a representation of a reference state of the physical condition to the ratio altering mechanism, and indicator for indicating a fixed number of revolutions of one of the shafts, an arrangement for determining the number of revolutions of the other of the shafts corresponding to the fixed number of revolutions of the one shaft, and a calculator for determining and displaying the ratio of the other shaft revolution number to the fixed number.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: June 23, 1987
    Assignee: The Singer Company
    Inventors: Charles W. Albrecht, Malcolm W. Cornforth
  • Patent number: 4390956
    Abstract: A gas flow volume corrector mounted on a flow meter is provided with a microprocessor which calculates a corrected volume each time the meter measures a unit volume of flowing gas. Customer supplied data as to base conditions, specific gravity and gas composition are utilized to calculate supercompressibility values. These values are then processed to provide a plurality of constants which define calculation equations. The constants are stored in the corrector on a diode matrix card or PROM and are utilized each time the meter measures a unit volume of flowing gas for calculating the corrected volume. To conserve memory space, integer arithmetic, rather than floating point arithmetic, is utilized in the calculations.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: June 28, 1983
    Assignee: The Singer Company
    Inventors: Malcolm W. Cornforth, Robert S. Jacobsen
  • Patent number: 4056717
    Abstract: A conventional fluid flow meter provides a single pulse output signal for each uncorrected unit volume flow. A monostable multivibrator (MV) is triggered by said meter signal and provides a gating signal for a 1 MHZ oscillator to produce a pulse train. A temperature sensor senses the fluid flow at the meter and controls the monostable MV so that the number of pulses in said pulse train is inversely proportional to the absolute temperature of the fluid flow. A preset down counter derives from said pulse train a number representing the absolute temperature at the sensor. A burst generator generates a fixed number of pulses related to a predetermined base temperature. A divider divides said fixed number of pulses by said number representing the absolute temperature of the fluid flow and provides a single pulse output for each integer resulting from said division and stores the remainder from said division for use in the next division.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: November 1, 1977
    Assignee: The Singer Company
    Inventor: Malcolm W. Cornforth