Patents by Inventor Jacques Pajot

Jacques Pajot 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).

  • Device for causing a drop in the pressure of high pressure oil controlling admission valves of a turbine in the event of excess speed
    Patent number: 5244005
    Abstract: A device for causing a drop in the pressure of high pressure oil controlling admission valves of a steam turbine in the event of excess speed, the device comprising a speed trip (2) constrained to rotate with the shaft (1) of the turbine and fed downstream from a constriction (5) with low pressure oil from the low pressure lubricating oil circuit of the turbine, the device being characterized in that it comprises a hydraulically controlled valve (9) having a hollow body (23) containing a closing valve member (24) for closing a discharge orifice (12) connected to said high pressure oil circuit, said closing valve member (24) being connected to a plate (25) dividing in sealed manner the inside of the body of the hydraulically controlled valve (9) into two compartments, a "first" one (11) of said compartments being situated on the same side as said discharge orifice (12) and also including at least one evacuation orifice (37), and the "second", other one of the compartments (8) being fed downstream via a feed or
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: September 14, 1993
    Assignee: GEC Alsthom SA
    Inventors: Alain Hassan, Jacques Pajot