Patents by Inventor John Howard Parent

John Howard Parent 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).

  • Expandable borehole packer
    Patent number: 6581682
    Abstract: The borehole packer is for sealing the annular space around a pipe in a borehole. The packer is pre-manufactured, in-factory. To give the packer the rigidity it needs for handling and transport, the packer is built around an inner sleeve of rigid (metal) mesh. Alternatively, the packer may be built around a cardboard tube, which is discarded as the packer is assembled onto the pipe. When the packing material is bentonite, the bentonite may be compression-moulded into annular-rings, and the packer is built up from the rings.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: June 24, 2003
    Assignee: Solinst Canada Limited
    Inventors: John Howard Parent, James G. Pianosi, Jamieson Edward Champ
  • Packing system and method for boreholes
    Patent number: 6286603
    Abstract: The packer includes the usual outer bladder, which is inflated against the sides of the borehole, to seal around a work-pipe. But the packer also includes an inner bladder. The packer is mechanically secured to the work-pipe by the grip of the inner bladder around the work-pipe. The inner bladder is sucked outwards by a vacuum pump, to enable the packer to be moved along the work-pipe. The same port through which vacuum was admitted to the inner bladder can then be used to admit pressurized fluid to the outer bladder.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: September 11, 2001
    Assignee: Solinst Canada Limited
    Inventor: John Howard Parent