Patents by Inventor Sami J. C. Webe

Sami J. C. Webe 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).

  • Proportional-integral process controller having a comparator with a variable slope ramp generator and a constant threshold generator
    Patent number: 5099183
    Abstract: A process controller for maintaining constant pressure under varying flow conditions, including a variable ramp generator and a constant threshold generator which are used to phase-control the current to the pump motor. The process controller can operate over a wide range of incoming AC power line frequencies, and has safety features which drive the motor to its mininum speed in the event of a failure at the setpoint control potentiometer and also disconnect power to the controller if the pressure exceeds a dangerous magnitude.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: March 24, 1992
    Assignee: American Power Equipment Company
    Inventor: Sami J. C. Webe