Patents by Inventor Robert Clayton Crowe

Robert Clayton Crowe 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).

  • HVAC fan-powered terminal unit having preset fan CFM
    Patent number: 6021252
    Abstract: An arrangement is disclosed for controlling fan motors in fan-powered terminal units which permit the air flow of the terminal units to be factory preset and reset using a voltmeter. The fan motor is responsive to the pulse width of pulses of a pulse width modulated signal to provide an air flow which is proportional to the pulse width. By adjusting the pulse width, the air flow may be set as desired. A pulse width modulated signal having pulses with a set amplitude and frequency is generated. The dc voltage of the pulse width modulated signal is measured using a voltmeter. As the pulses have a set amplitude and frequency, the pulse width of the pulses may be adjusted by controlling the dc voltage of the pulse width modulated signal. The fan motor is programmed to deliver the set air flow over a range of static pressures.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: February 1, 2000
    Assignee: Nailor Industries of Texas Inc.
    Inventors: Eugene William Michael Faris, Robert Clayton Crowe
  • HVAC fan-powered terminal unit having preset fan CFM
    Patent number: RE38406
    Abstract: An arrangement is disclosed for controlling fan motors in fan-powered terminal units which permit the air flow of the terminal units to be factory preset and reset using a voltmeter. The fan motor is responsive to the pulse width of pulses of a pulse width modulated signal to provide an air flow which is proportional to the pulse width. By adjusting the pulse width, the air flow may be set as desired. A pulse width modulated signal having pulses with a set amplitude and frequency is generated. The dc voltage of the pulse width modulated signal is measured using a voltmeter. As the pulses have a set amplitude and frequency, the pulse width of the pulses may be adjusted by controlling the dc voltage of the pulse width modulated signal. The fan motor is programmed to deliver the set air flow over a range of static pressures.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: January 27, 2004
    Assignee: Nailor Industries of Texas Inc.
    Inventors: Eugene William Michael Faris, Robert Clayton Crowe