Patents by Inventor Dan J. Ryherd

Dan J. Ryherd 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).

  • Electronic control of clothes dryer
    Patent number: 5444924
    Abstract: A control system for a clothes dryer is disclosed. A microprocessor monitors the heated inlet air temperature and the exhaust temperature. If the inlet temperature exceeds a high limit value a given number of times, an air blockage indicator is activated. Degrees of dryness are measured by the number of times the inlet temperature has dropped below a threshold value while the heater is off because the exhaust temperature has exceeded a desired value. An estimated drying time is calculated and displayed to the user based on a linear function of the inlet and exhaust temperatures measured at the beginning of the cycle and again a short time later.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: August 29, 1995
    Assignee: White Consolidated Industries, Inc.
    Inventors: Dan F. Joslin, Dan J. Ryherd
  • Electronic control of clothes dryer
    Patent number: 5291667
    Abstract: A control system for a clothes dryer is disclosed. A microprocessor monitors the heated inlet air temperature and the exhaust temperature. If the inlet temperature exceeds a high limit value a given number of times, an air blockage indicator is activated. Degrees of dryness are measured by the number of times the inlet temperature has dropped below a threshold value while the heater is off because the exhaust temperature has exceeded a desired value. An estimated drying time is calculated and displayed to the user based on a linear function of the inlet and exhaust temperatures measured at the beginning of the cycle and again a short time later.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 8, 1994
    Assignee: White Consolidated Industries, Inc.
    Inventors: Dan F. Joslin, Dan J. Ryherd