Patents by Inventor J. Thomas Ellis

J. Thomas Ellis 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).

  • Shock absorbing assembly for a hydraulic catwalk
    Patent number: 8991799
    Abstract: A shock absorbing assembly (10) has a front plate (12) and a rear plate (14) separated by spacers (16). The plates and the spacers each have holes (18A, 18B), the upper holes (18A) in the front plate preferably being threaded. Fasteners, such as but not limited to threaded rods (22A, 22B) and locknuts (24A, 24B), hold the spacers in position between the front plate and the rear plate. The threaded rods (22A) are screwed into the threaded holes in the front plate but do not protrude from the front face of the front plate. The threaded rods (22A) are secured by locknuts 24A on one end and the threaded rods (22B) are secured by locknuts 24B on both ends. The rear plate also has a pair of engagement plates (20) which position the assembly on the catwalk.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 31, 2015
    Inventor: J. Thomas Ellis