Patents by Inventor Bernard Lionel Glen

Bernard Lionel Glen 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).

  • DOWN-THE-HOLE HAMMER DRILL ASSEMBLY
    Publication number: 20130292182
    Abstract: The invention provides a down-the-hole drill assembly (21) comprising an assembly of a bit (9) and co-operating chuck (19) including a bit (9) mounting with an external sleeve (4) surrounding the bit (9) mounting, the sleeve (4) during operation of the drill being clamped between the chuck (19) and the bit head (9). The sleeve (4) provides a shield against ingress of debris into the bit and chuck assembly, and provides control of exhaust from the assembly. The sleeve (4) further provides control of a pin (107) releasably engaging the bit (9) to the chuck (19).
    Type: Application
    Filed: October 31, 2011
    Publication date: November 7, 2013
    Inventor: Bernard Lionel Glen