Patents by Inventor Harvie R. C. Wright

Harvie R. C. Wright 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 analyzer
    Patent number: 4485666
    Abstract: A portable gas analyzer uses a pump to take a gas sample and pump it through a carbon monoxide sensing cell, an oxygen-sensing cell and a methane-sensing pellister. Concentrations of these gases are displayed continuously on LCD displays. The gas analyzer is particularly useful in underground coal mines and offers the possibility of replacing many different gas analyzers with a simple convenient apparatus which gives continuous readings of all the critical gas concentrations.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: December 4, 1984
    Assignee: Coal Industry (Patents) Limited
    Inventors: John C. Higgins, Harvie R. C. Wright, David Trainer