Patents by Inventor Margaret Anne Maciejko

Margaret Anne Maciejko 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).

  • Apparatus, systems, and methods for controlling valve actuation speed
    Patent number: 11320062
    Abstract: A valve actuator for a valve is disclosed, including an actuator housing with a reciprocation axis and a piston configured to reciprocate within the actuator housing along the reciprocation axis. The actuator housing has a port and a chamber disposed between the piston and a portion of the actuator housing with the port for fluid communication with the port of a working fluid. A piston projection or piston recess in the chamber is moveable with the piston to reduce a flow area in the chamber that causes a reduction in speed of the piston prior to reaching a stop position.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 3, 2022
    Assignee: CAMERON INTERNATIONAL CORPORATION
    Inventors: Loc G. Hoang, Margaret Anne Maciejko
  • APPARATUS, SYSTEMS, AND METHODS FOR CONTROLLING VALVE ACTUATION SPEED
    Publication number: 20210071776
    Abstract: A valve actuator for a valve is disclosed, including an actuator housing with a reciprocation axis and a piston configured to reciprocate within the actuator housing along the reciprocation axis. The actuator housing has a port and a chamber disposed between the piston and a portion of the actuator housing with the port for fluid communication with the port of a working fluid. A piston projection or piston recess in the chamber is moveable with the piston to reduce a flow area in the chamber that causes a reduction in speed of the piston prior to reaching a stop position.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 11, 2021
    Inventors: Loc G. Hoang, Margaret Anne Maciejko