Patents by Inventor John Hoppal

John Hoppal 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).

  • Patent number: 5926386
    Abstract: A configuration based cooling fan speed controller for use with computers and other heat intensive electronic devices. Methods of using and manufacturing the controller are also disclosed. The cooling fan speed controller generally comprises a EEPROM coupled with firmware controls. If the controller is set in manual mode, a speed input by the computer's manufacturer or service provider is used to set the starting speeds of a device's cooling fans. If the controller is set in auto mode, the device's configuration is detected, and cooling fan start speeds are retrieved from a fan speed table stored in the EEPROM. Once the lowest operating speeds for a device's cooling fans have been selected, the speeds of the device's cooling fans are ramped up or down in response to the temperature sensed by an ambient air temperature sensor. The invention holds audible fan noise to a minimum.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: July 20, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Donna E. Ott, Dennis L. Floyd, John Hoppal, Guy R. Wagner