Patents by Inventor Granville C. James

Granville C. James 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).

  • Protective helmets
    Patent number: 5283914
    Abstract: A protective helmet incorporates a visor retractable therewithin, a fan for providing filtered airflow through a duct within the shell to the visor, and ear defenders mounted substantially within the profile of the shell.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: February 8, 1994
    Assignee: Coal Industry (Patents) Limited
    Inventor: Granville C. James
  • Fluid supply system to rotary cutter heads on mining machines
    Patent number: 4643483
    Abstract: A fluid supply system provides a non-rotary component comprising an inlet adaptor unit, passage means extending along the rotary drive shaft and distributor means mounted within the rotary cutter head. The non-rotary distributor means provide outlet nozzles arranged to direct air flow inducing sprays towards air ducts provided on the rotary hub assembly.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: February 17, 1987
    Assignee: Coal Industry (Patents) Limited
    Inventors: Derek J. Brooks, Granville C. James
  • Dust filter apparatus
    Patent number: 4484937
    Abstract: Dust filter apparatus comprises a first, coarse dust removal stage constituted by a plurality of swirl chamber devices into which a liquid is sprayed and a second, fine dust removal stage constituted by a wetted filter panel.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: November 27, 1984
    Assignee: Coal Industry (Patents) Limited
    Inventors: Granville C. James, Gerald K. Burnard
  • Dust filter apparatus
    Patent number: 4253854
    Abstract: Dust filter equipment includes a fibrous mat filter (37) having a low fibre density and a low loft so that when water is fed onto the filter it saturates the filter throughout its thickness and flows freely down the filter to form an effectively continuous body of water having a thickness virtually equal to the thickness of the mat filter.
    Type: Grant
    Filed: September 20, 1973
    Date of Patent: March 3, 1981
    Assignee: Coal Industry (Patents) Limited
    Inventor: Granville C. James
  • Dust filter apparatus
    Patent number: 4175933
    Abstract: Dust filter apparatus includes a filter panel and a nozzle spraying liquid into the gaseous flow upstream of the filter panel which comprises a plurality of layers each extending across the gaseous flow duct and at least alternate layers defining at least portions of passageways for liquid flowing down the filter panel, flow of liquid in the panel tending to be restrained by the filter layers such that in use a liquid curtain is formed across the duct.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: November 27, 1979
    Assignee: Coal Industry (Patents) Limited
    Inventor: Granville C. James