Patents by Inventor Gordon Leonard McLaren

Gordon Leonard McLaren 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).

  • Hydraulic chuck
    Patent number: 5954346
    Abstract: A hydraulic chuck for a drill string has a hydraulic actuator to operate the jaws. The actuator remains stationery while the spindle is rotated and a pair of skirts attached to the actuator cover the bearing assemblies. The jaws are supported in slots in the spindle and are part cylindrical to reduce stress in the spindle. The chuck is secured to a drive unit by bolts received in open slots in an attachment flange to facilitate attachment of the chuck after routine maintenance.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: September 21, 1999
    Assignee: Boart Longyear Inc.
    Inventor: Gordon Leonard McLaren