Patents by Inventor Harvey Padden

Harvey Padden 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).

  • Dynamic error correcting positive displacement piston flowmeter and method of measuring gas flow in a piston flowmeter
    Patent number: 6763731
    Abstract: A positive displacement flowmeter comprising a cylindrical enclosure and a piston movable within the enclosure between the opposite ends of the enclosure; with the piston having a diameter closely approximating the diameter of the enclosure to form a clearance seal; means for permitting a gas, the flow of which is to be measured, into one end of the enclosure for moving said piston toward the opposite end of the enclosure, means for detecting the movement of the piston between two locations along the cylindrical enclosure, means for measuring the pressure in the cylindrical enclosure and for calculating the presence of a dynamic error, if any, during said timed interval in accordance with the following equation: Error = ( P 2 - P 1 ) P 1 · Vm
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: July 20, 2004
    Inventor: Harvey Padden