Patents Examined by Nancy P. Connoly
  • Bridge or tunnel construction
    Patent number: 5351353
    Abstract: A bridge or tunnel construction consisting of one or more arch units (10), each unit formed from a pair of reinforced concrete arch segments (11 and 12) interconnected to form the crown of the arch unit with the arch unit or units being overlaid with a compacted interacting soil layer.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: October 4, 1994
    Assignee: CSR Humes Pty. Limited
    Inventor: Darryl F. Walters
  • Folding portable ramp
    Patent number: 5287580
    Abstract: A lightweight folding portable ramp for use with an electric scooter or a wheelchair which may be positioned by the user without dismounting from the means of conveyance. The ramp is comprised of two ramp members and may include a rectangular connecting means, all of which are hinged together. Handles for lifting are provided on the ramp members.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: February 22, 1994
    Inventor: Steven H. Nelson