Patents by Inventor Paul H. Buisine

Paul H. Buisine 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).

  • Method of observing the pumping characteristics of a positive displacement pump
    Patent number: 4705459
    Abstract: The invention relates in particular to measuring the delivery rate of a positive displacement pump comprising at least one piston (3) driven with reciprocating movement in a chamber (2), which chamber is connected to an inlet circuit (4) via an inlet valve (5) and to an outlet circuit (6) via a delivery valve (7). The number of cycles performed by the pump in unit time are counted, and simultaneously its volumetric efficiency is measured, thereby enabling its real delivery rate to be deduced. Its volumetric efficiency may be measured by means of position sensors (17, 18) detecting the closure and opening instants of the delivery valve, with another sensor determining the instants at which the piston (3) passes through its end positions.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: November 10, 1987
    Assignee: Dowell Schlumberger Incorporated
    Inventors: Paul H. Buisine, Paul Dancer