Patents by Inventor Marion D. Smith

Marion D. Smith 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).

  • Split tool mechanical vibrator
    Patent number: 5809895
    Abstract: A tamping assembly uses a split tool mechanical vibrator having corresponding front and back vibrator units powered by a single motor. A tamping tool provides easy connection to a tamping tool holder in such a way that two tamping tools may be mounted to one tool holder using a single bolt and wherein the tool holder has a channel in which a projection of the tamping tool is secured by a taper lock.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: September 22, 1998
    Assignee: Harsco Technologies Corporation
    Inventors: Craig A. Sandsted, Marion D. Smith
  • Split tool mechanical vibrator
    Patent number: 5730059
    Abstract: A tamping assembly uses a split tool mechanical vibrator having corresponding front and back vibrator units powered by a single motor. A tamping tool provides easy connection to a tamping tool holder in such a way that two tamping tools may be mounted to one tool holder using a single bolt and wherein the tool holder has a channel in which a projection of the tamping tool is secured by a taper lock.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: March 24, 1998
    Assignee: Harsco Corporation
    Inventors: Craig A. Sandsted, Marion D. Smith
  • Split tool mechanical vibrator
    Patent number: 5584248
    Abstract: A tamping vehicle uses a split tool mechanical vibrator having corresponding front and back vibrator units powered by a single motor. Sprockets and a synchronous sprocket belt drive front and back units to vibrate 180 degrees out of phase. A lubricant carrying belt carries oil to the top of a housing for lubricating and cooling various moving parts. Squeeze cylinders are used to move tamping tools to squeeze in positions by rotating the tamping tools about the same axes as rotation of vibration inducing shafts. Independently liftable gauge and field side tamping assemblies allow use at railroad switches and other locations where narrow width tamping is needed. A tamping tool provides easy connection to a tamping tool holder in such a way that two tamping tools may be mounted to one tool holder.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Harsco Corporation
    Inventors: Craig A. Sandsted, Roy J. Moore, Anthony P. Delucia, Marion D. Smith