Patents by Inventor James William Grant, Jr.

James William Grant, Jr. 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).

  • Variable length encapsulating pressure drop tester
    Patent number: 4069704
    Abstract: An apparatus for testing tobacco smoke filter rods and similar articles of varying lengths for pressure drop across the opposed ends of a rod encapsulated in an air-impervious sleeve comprising a housing having a longitudinal bore, a rod receptacle having an air-impervious encapsulating sleeve mount therein, slideably mounted in the bore, a hollow rod stop stationarily mounted in the bore and extending into the sleeve of the rod receptacle, means for expanding the air-impervious sleeve, vacuum means communicating with the hollow interior of the rod stop and means for measuring the pressure drop interposed between the vacuum means and the hollow rod stop.
    Type: Grant
    Filed: May 25, 1976
    Date of Patent: January 24, 1978
    Assignee: Celanese Corporation
    Inventors: James William Grant, Jr., Scott Brown Coble, Jr.