Patents by Inventor Ernest P. van Eeden

Ernest P. van Eeden 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).

  • Gas detectors
    Patent number: 4606219
    Abstract: A carbon monoxide gas detector comprises a housing consisting of two enclosures 10 and 12 having ports in the wall thereof to provide a tortuous path for air entering the inner enclosure 12. A gas cell transducer 16 connected to an electrical circuit 18 provides signals indicative of gas concentration. The detector is powered from a remote supply via wires 22 and 26 and provides gas concentration signals via a wire 24 to a remote central station with a fail-safe feature wherein failure of the circuit or the detector will provide signals interpreted as dangerous gas concentrations.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: August 19, 1986
    Assignee: Crucible S.A.
    Inventors: Bernardus J. Bout, Ernest P. van Eeden, Nicolaas T. van der Walt