Patents by Inventor Steven Perry Apelman

Steven Perry Apelman 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).

  • Fire alarm power line carrier com-system
    Patent number: 8878665
    Abstract: A fire alarm system 4 for a structure, has a two-wire interconnected transceiver 4J that uses power line carrier technology to inject a radio signal onto two power conductors, 6B & 6W. The transceiver 4J includes a transmitter circuit 7 and a receiver circuit 9. The transmitter circuit 7 includes a trigger circuit 10, attachable to an output line of a local fire alarm 5. The trigger circuit 10, can monitor the output line (6 Yellow) for an alarm condition output signal, for the purpose of sensing an alarm condition. The transmitter circuit 7 responds to the alarm condition output signal by injecting the radio signal onto the two power conductors. The radio signal would activate a second fire alarm system 4B attached to power lines in the structure.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: November 4, 2014
    Inventors: Christopher George Kalivas, Steven Perry Apelman
  • FIRE ALARM POWER LINE CARRIER COM-SYSTEM
    Publication number: 20130049951
    Abstract: A fire alarm system 4 for a structure, has a two-wire interconnected transceiver 4J that uses power line carrier technology to inject a radio signal onto two power conductors, 6B & 6W. The transceiver 4J includes a transmitter circuit 7 and a receiver circuit 9. The transmitter circuit 7 includes a trigger circuit 10, attachable to an output line of a local fire alarm 5. The trigger circuit 10, can monitor the output line (6 Yellow) for an alarm condition output signal, for the purpose of sensing an alarm condition. The transmitter circuit 7 responds to the alarm condition output signal by injecting the radio signal onto the two power conductors. The radio signal would activate a second fire alarm system 4B attached to power lines in the structure.
    Type: Application
    Filed: May 12, 2011
    Publication date: February 28, 2013
    Inventors: Christopher George Kalivas, Steven Perry Apelman