Patents by Inventor J. Brent McPhee

J. Brent McPhee 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).

  • Patent number: 5597191
    Abstract: A choker hook is connected to a choker cable and is used for pulling a log from its felled position to a desired location. The choker hook is remotely released from the log without manual intervention at the desired end position. The choker hook has a configuration where a ferrule on the end of the choker cable tends to nest within the choker hook and assume a locking position when the log is being transported. When the direction of pull in the cable is reversed, the forces will tend to remove the ferrule from its locking position and release it from the choker hook thereby releasing the log. During the force reversal, the choker hook rotates about a predetermined angle and about predetermined axes of rotation depending on its specific configuration.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: January 28, 1997
    Assignee: Forest Engineering Research Institute of Canada
    Inventors: J. Brent McPhee, James M. Ewart