Patents by Inventor Grady Odell Edwards

Grady Odell Edwards 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).

  • Cam-action pipe puller
    Patent number: 7232167
    Abstract: A cam-operated pipe puller for pulling and extracting a pipe through a conduit wherein the pipe puller has members for grasping the inner sides of the pipe and apparatus attached to the grasping members for holding the grasping members in a retained position as they are initially inserted into the pipe and for releasing and expanding the grasping members to engage the inner surface of the pipe after the grasping members are fully inserted into the pipe so as to pull and extract the pipe from and through the conduit.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 19, 2007
    Inventor: Grady Odell Edwards
  • Cam-action pipe puller
    Publication number: 20020185879
    Abstract: A cam-operated pipe puller for pulling and extracting a pipe through a conduit wherein the pipe puller has members for grasping the inner sides of the pipe and apparatus attached to the grasping members for holding the grasping members in a retained position as they are initially inserted into the pipe and for releasing and expanding the grasping members to engage the inner surface of the pipe after the grasping members are fully inserted into the pipe so as to pull and extract the pipe from and through the conduit.
    Type: Application
    Filed: April 12, 2002
    Publication date: December 12, 2002
    Inventor: Grady Odell Edwards