Patents by Inventor Jay D. Etheridge

Jay D. Etheridge 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).

  • Sample injection system for analyzers
    Patent number: 4043202
    Abstract: A vacuum loop sample injection system, for use with gas chromatographs and other similar analyzer devices, in which the sample volume is collected within an enclosure having a known pressure, temperature, and volume so that the molecular quantity of a sample is used for each chromatograph test. The sample injection system operates by creating a vacuum within this enclosure and using this vacuum to slowly draw the sample in through a restriction unt predetermined pressure is obtained. The enclosure can be evacuated again by the vacuum source and refilled with the sample as many times as desired to wash any impurities out of the enclosure. Then the enclosure is placed in stream with the carrier gas for injection of the sample into the sample analyzer.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: August 23, 1977
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Jay D. Etheridge
  • Automatic control system for vacuum loop sample injection system
    Patent number: 4030369
    Abstract: A vacuum loop sample injection system, for use with gas chromatographs and other similar analyzer devices, in which the sample volume is collected within an enclosure having a known pressure, temperature, and volume so that the molecular quantity of a sample is used for each chromatograph test. The sample injection system operates by creating a vacuum within this enclosure and using this vacuum to slowly draw the sample in through a restriction until the predetermined pressure is obtained. The enclosure can be evacuated again by the vacuum source and refilled with the sample as many times as desired to wash any impurities out of the enclosure. Then the enclosure is placed in stream with the carrier gas for injection of the sample into the sample analyzer.An automatic system for controlling the injection system operation is provided wherein a given number of sample containers can be connected to the system and a sequential operation commenced to inject the sample into the sample analyzer.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: June 21, 1977
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Jay D. Etheridge