Patents by Inventor Richard F. Reiland

Richard F. Reiland 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).

  • Digital valve positioner
    Patent number: 5848609
    Abstract: A digital positioner is used to control and operate an AC electric valve actuator. A valve interface control program (ICP) provides a PC-based interface to the valve positioner or positioners. The ICP allows parameter modification, monitors alarm conditions, and provides a display of calibration data.The positioner has a security code to prevent unauthorized access; adjustable independent valve open and close ramp times; electronic valve actuator travel limits; programmable setpoint direction; programmable signal split range; manually adjustable deadband and an auto-adjusting setting; and high positioner resolution.The ICP can command the positioner to do the following: set the value of a specified parameter; read the value of a specified parameter; control the positioner setpoint from a remote computer; request the positioner to return the present status; read the byte value in a specified EEPROM location; set the value of a specified location in EEPROM memory; and select system operating mode.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: December 15, 1998
    Assignee: Worcester Control Licenseco Inc.
    Inventors: Richard R. Marchesseault, Sohrab Omidbakhsh, Richard F. Reiland