Patents by Inventor Gary W. Kaibel

Gary W. Kaibel 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).

  • Line tester for coin-operated telephones
    Patent number: 5960060
    Abstract: A line tester unit for coin-operated telephones that permits the interface between the coin-operated telephones and the telephone network to be efficiently verified at most access points throughout the telephone network.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: September 28, 1999
    Assignee: J. V. Technologies, Inc.
    Inventor: Gary W. Kaibel
  • Motor control fail-safe circuit
    Patent number: 4833379
    Abstract: A fail-safe circuit is disclosed for use with an intermittently operated d.c. motor connected by means of a circuit breaker to a power supply, wherein a control circuit provides control pulses intermittently to the motor. The fail-safe circuit includes a capacitor which is charged when the drive pulses are being applied to said motor, and is discharged when the drive pulses are not being applied to said motor. A reference voltage is generated and compared with the voltage stored on said capacitor. When the voltage on the capacitor exceeds the reference voltage, the circuit breaker is caused to interrupt the power supply to the motor.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: May 23, 1989
    Assignee: Sherwood Medical Company
    Inventors: Gary W. Kaibel, Frederick F. Schweitzer
  • Card reader
    Patent number: D590828
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: April 21, 2009
    Assignee: Intercard, Inc.
    Inventors: Scott D. Sherrod, Gary W. Kaibel, Mark B. Emge