Patents by Inventor Rodney R. Elger

Rodney R. Elger 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: 4717913
    Abstract: A data telemetry system for process control includes a point transponder adapted to receive digitally coded infrared interrogation signals. The transponder includes a first group of positive, intrinsic, negative (PIN) diodes disposed thereon for omnidirectionally detecting interrogation signals and a second group of infrared emitting diodes for generating digitally coded signals responsive to the interrogation signals. The first group and the second group of diodes define a first array of diode nodes, each node including at least one diode from each group. A transceiver includes a generally hemispherical, omnidirectional transmitting and receiving member having a third group of infrared emitting diodes disposed thereon for generating the interrogation signals and a fourth group of PIN diodes for receiving the responsive signals from the transponder. The third and fourth groups define a second array of diode nodes, each node including at least one diode from each other.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: January 5, 1988
    Assignee: Johnson Service Company
    Inventor: Rodney R. Elger