Patents by Inventor Dave Chamberlain

Dave Chamberlain 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).

  • Pressure control system with optimized performance
    Patent number: 7369920
    Abstract: A pressure control system for controlling pressure of a fluid in a chamber includes a pressure sensor configured to measure the pressure of the fluid in the chamber, and a valve configured to control the pressure of the fluid in the chamber by regulating flow of the fluid from the chamber. The pressure control system further includes a controller. The controller is configured to estimate the volume of the chamber, and to generate a pump speed curve of the valve. The controller is further configured to monitor and modify the pump speed curve so as to maintain a slope of the pump speed curve to at least a minimum value, and to use the modified pump speed curve to adjust the position of the valve in response to pressure measurements by the pressure sensor, so as to maintain the pressure in the chamber at a desired pressure setpoint.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: May 6, 2008
    Assignee: MKS Instruments, Inc.
    Inventors: Vladislav Davidkovich, Gordon Hill, Dave Chamberlain, Paul Lucas
  • Pressure control system with optimized performance
    Publication number: 20070225870
    Abstract: A pressure control system for controlling pressure of a fluid in a chamber includes a pressure sensor configured to measure the pressure of the fluid in the chamber, and a valve configured to control the pressure of the fluid in the chamber by regulating flow of the fluid from the chamber. The pressure control system further includes a controller. The controller is configured to estimate the volume of the chamber, and to generate a pump speed curve of the valve. The controller is further configured to monitor and modify the pump speed curve so as to maintain a slope of the pump speed curve to at least a minimum value, and to use the modified pump speed curve to adjust the position of the valve in response to pressure measurements by the pressure sensor, so as to maintain the pressure in the chamber at a desired pressure setpoint.
    Type: Application
    Filed: March 21, 2006
    Publication date: September 27, 2007
    Inventors: Vladislav Davidkovich, Gordon Hill, Dave Chamberlain, Paul Lucas