Patents by Inventor Stanley Fletcher

Stanley Fletcher 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).

  • Apparatus for counterbalancing tongs
    Patent number: 4643399
    Abstract: An apparatus for balancing tongs is comprised of a pair of fluid actuated piston and cylinder assemblies. The rod of each assembly carries a first pair of rotatably mounted pulley wheels, and a second pair of pulley wheels is mounted on the assembly in spaced relationship to the first set of pulley wheels. A cable is journalled around the pulley wheels, suspended over an elevated pulley and attached to a hydraulic tong for counterbalancing, lifting and lowering the tong. A bleed line permits fluid to escape from the cylinder as the hydraulic tong moves downwardly with a workpiece.
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: February 17, 1987
    Inventor: Stanley Fletcher