Patents by Inventor David Peter Kutinsky

David Peter Kutinsky 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).

  • Downhole bearing assembly which accommodates compressive and tensile axial
    Patent number: 5664891
    Abstract: A bearing assembly for bearing tensile and compressive axial loads. In preferred embodiments, the invention is a bearing assembly for use downhole, including a first member and a second member with coinciding central longitudinal axes, and a thrust bearing subassembly in a chamber between the first and second members defined by two shoulders of the first member and two shoulders of the second member. The second member is free to rotate, and has at least limited freedom to translate axially, relative to the first member. The thrust bearing subassembly's overall axial length is such that the first member can translate axially relative to the second member between a first configuration in which the thrust bearing subassembly bears a tensile axial load and a second configuration in which it bears a compressive axial load.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: September 9, 1997
    Assignee: Canadian Downhole Drill Systems, Inc.
    Inventors: David Peter Kutinsky, Raymond Samuel Livingstone, Raymond Dean Livingstone