Patents by Inventor Erich C. Griffith

Erich C. Griffith 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).

  • Modular wheelchair system
    Patent number: 10307314
    Abstract: A convertible transport system including a seat portion, a back support portion, and a pivoting mechanism coupled to the seat portion and to the back support portion. The pivoting mechanism is configured to adjust and lock the back support portion relative to the seat portion, the pivoting mechanism having three operative states: a free pivoting state allowing the back support portion to pivot relative to the seat portion about an axis; a ratcheting state allowing the back support portion to only pivot toward the seat portion about the axis; and a locking state in which the pivoting mechanism is locked to thereby prevent a pivoting movement of the back support portion relative to the seat portion.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: June 4, 2019
    Inventors: Erich C. Griffith, Jason L. Ward
  • MODULAR WHEELCHAIR SYSTEM
    Publication number: 20170367910
    Abstract: A convertible transport system including a seat portion, a back support portion, and a pivoting mechanism coupled to the seat portion and to the back support portion. The pivoting mechanism is configured to adjust and lock the back support portion relative to the seat portion, the pivoting mechanism having three operative states: a free pivoting state allowing the back support portion to pivot relative to the seat portion about an axis; a ratcheting state allowing the back support portion to only pivot toward the seat portion about the axis; and a locking state in which the pivoting mechanism is locked to thereby prevent a pivoting movement of the back support portion relative to the seat portion.
    Type: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Inventors: Erich C. Griffith, Jason L. Ward
  • MODULAR WHEELCHAIR SYSTEM
    Publication number: 20170095381
    Abstract: A convertible transport system including a seat portion and a wheeled portion that is couplable to the seat portion. The seat portion is reclinable whether or not coupled to the wheeled portion.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 6, 2017
    Inventors: Erich C. Griffith, Jason L. Ward
  • TRACK REMOVER / ASSEMBLER
    Publication number: 20130239405
    Abstract: A track replacement apparatus including a lower lifting device and an upper tensioning device coupled to the lower lifting device.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Inventors: Trevor C. Griffith, Erich C. Griffith
  • SEGMENTED SPROCKET ASSEMBLY SYSTEM
    Publication number: 20130038119
    Abstract: A sprocket assembly for a vehicle having a chassis and at least one endless track for engaging a ground surface. The track being movably coupled to the chassis and driven by the sprocket assembly. The sprocket assembly including at least one sprocket segment, a hub rotationally coupled to the chassis and a fastening system configured to displace some material portion of the sprocket segment when the sprocket segment is attached to the hub.
    Type: Application
    Filed: June 28, 2012
    Publication date: February 14, 2013
    Inventors: Trevor C. Griffith, Erich C. Griffith