Patents by Inventor Robert E. Kirtley

Robert E. Kirtley 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).

  • Rail supported articulated climbing dolly
    Patent number: 4715769
    Abstract: In a climbing four-wheel dolly for moving a load from one elevation to another, a pair of box-channel tracks form a ramp in which sliding door track rollers, mounted on the axle support adjacent the respective dolly wheel channel track, guidingly support the dolly. The dolly is moved up or down the tracks by a winch and pulley arrangement having a cable connected with a tongue at one end of the dolly.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: December 29, 1987
    Inventor: Robert E. Kirtley