Patents by Inventor Ralph Ellis Grier

Ralph Ellis Grier 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 operating commodity trailer hopper trap doors
    Patent number: 7059683
    Abstract: An apparatus for operating first and second commodity trailer hopper trap doors is provided that includes a support frame extending between first and second ends, first and second driveshaft assemblies attached at each end of the support frame, a motor assembly attached to the support frame, and first and second linking mechanisms coupled between the motor assembly and the first and second driveshaft assemblies such that the motor assembly is operable to move the first and second linking mechanisms and thereby rotate the first and second driveshaft assemblies, thus operating the commodity trailer hopper trap doors. Various embodiments of the apparatus are provided.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: June 13, 2006
    Inventor: Ralph Ellis Grier
  • Apparatus for operating commodity trailer hopper trap doors
    Patent number: 6966609
    Abstract: An apparatus for operating first and second commodity trailer hopper trap doors is provided that includes a support frame extending between first and second ends, first and second driveshaft assemblies attached at each end of the support frame, a motor assembly attached to the support frame, and first and second linking mechanisms coupled between the motor assembly and the first and second driveshaft assemblies such that the motor assembly is operable to move the first and second linking mechanisms and thereby rotate the first and second driveshaft assemblies, thus operating the commodity trailer hopper trap doors. Various embodiments of the apparatus are provided.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: November 22, 2005
    Inventor: Ralph Ellis Grier