Patents by Inventor Christopher John Caton

Christopher John Caton 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).

  • Lockable motor assembly for use in a well bore
    Publication number: 20040089478
    Abstract: A lockable motor assembly for use in a well bore comprises a PDM motor having a rotor and a stator. A locking member has a splined projection which is received within a splined recess of the rotor and external splines which mate with splines provided on a sub connected to the stator. The components are held in this configuration by a shear ring until the fluid pressure within a chamber defined between the locking member and the sub is sufficient to cause the shear ring to shear. The locking member may then move out of the engagement with the rotor to free the motor for operation. The locking member is held in this position by a ratchet mechanism.
    Type: Application
    Filed: October 27, 2003
    Publication date: May 13, 2004
    Applicant: Smith International, Inc.
    Inventors: Brian Cruickshank, John Patrick Boyce, Christopher John Caton, Bruce McGarian