Patents by Inventor Prem Pratap

Prem Pratap 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: 4445392
    Abstract: An overspeed trip mechanism for a rotating shaft has a collar mounted on the shaft. An eccentric ring surrounds and is connected to the collar for rotation therewith. A trip member is located exteriorly of the collar. The eccentric ring is movable radially relative to the collar between a first position spaced from the trip member and a second position in contact therewith. A spring is arranged between the ring and the collar to yieldably urge the ring into its first position.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: May 1, 1984
    Assignee: Coppus Engineering Corporation
    Inventor: Prem Pratap
  • Patent number: 4379544
    Abstract: A trip mechanism for a trip valve is made up of a reset lever and a bell crank operatively connected through a guide stem which is guidingly received in a flange portion of the valve housing. A valve stem and the guide stem are slidably connected to the reset lever which is provided with a spring bias which tends to move the reset lever in a valve closing position. When the bell crank and guide stem are in engagement the valve is held open and when the bell crank is subjected to an actuating force the bell crank and guide stem become disengaged causing the valve to close under the spring bias and to remain closed until manually reset.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: April 12, 1983
    Assignee: Elliott Turbomachinery Company, Inc.
    Inventors: Eugene V. Angelo, Prem Pratap
  • Patent number: 4239186
    Abstract: A trip valve including a valve body provided with a valve seat and further including a movable trip lever having a cam defining a first support surface thereof. A valve stem is movably disposed within the valve body and includes a valve attached to one end thereof for movement between a closed seat engaged position and an open seat disengaged position. A trip pin is attached to the valve stem and is movable therewith. The trip pin is supported upon the first support surface of the trip lever. A force generating device is operably connected to the valve stem for urging the valve into its seat engaged position. The cam includes a first portion movable between a first position spaced from the trip pin and a second position whereat the trip pin is directly supported upon the first portion of the cam. The first portion of the cam provides a force for urging the valve into its open seat disengaged position.
    Type: Grant
    Filed: April 18, 1979
    Date of Patent: December 16, 1980
    Assignee: Carrier Corporation
    Inventor: Prem Pratap