Patents by Inventor Derrick Straka

Derrick Straka 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).

  • Method of monitoring a plurality of control loops by regulation ratio monitoring
    Patent number: 6023222
    Abstract: For monitoring the appropriate operation of a plurality of control loops having the same setpoint, the control ratio is measured at each controller, is normalized and an alarm signal is generated if said normalized control ratio exceeds a predetermined alarm band.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: February 8, 2000
    Assignees: D.I.E.N.E.S. Apparatebau GmbH, Zinser Textilmaschinen GmbH
    Inventors: Max Brossmer, Wolfgang Gehrmann, Erhard Lehle, Derrick Straka
  • Method of calibrating and/or monitoring a controlled-temperature heating device
    Patent number: 5712467
    Abstract: A heated galette is provided with a heating unit and a temperature sensor connected in a control circuit with the heating unit to maintain a certain temperature of the surface of the galette on which a synthetic yarn is guided. The control circuit is disconnected periodically or intermittently so that the heating unit can be heated independently of the feedback control provided by the control unit. Upon the heating unit attaining an equilibrium with temperature, a first actual value temperature is measured and a difference is obtained from a setpoint temperature corresponding to a given control ratio and a signal representing the difference is generated. Utilizing this system, it is possible to detect failure of the temperature sensor and/or the heating unit or inappropriate positioning of the temperature sensor.
    Type: Grant
    Filed: April 11, 1996
    Date of Patent: January 27, 1998
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Derrick Straka, Gunter Konig