Patents by Inventor Samuel D. Smith

Samuel D. Smith 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).

  • Patent number: 4440263
    Abstract: A ladder attachment includes a telescopic cross-bar 1A, 2A the ends of which carry wheels 3A for engaging a wall on either side of the ladder. This provides stability and also sets the ladder back from the wall.The center portion 1A of the cross-bar has a pair of hooks 4A which hook over a rung 5A of the ladder and a pair of turnbuckles 9 which hook under a lower rung 12 (after which the turnbuckles 9 are tightened to secure the fixing). The turnbuckles are attached to a sleeve 10 carried by the bar 1A and have hooks 11.A platform assembly 30 can also be mounted on the ladder and connected to the ladder attachment by support struts. The platform assembly includes a support framework 32 in which slots 33 are provided to overlie two rungs 34 and a turnbuckle 35 tightens the framework against the ladder.The ladder attachment can carry a pulley by which goods can be hoisted to the person working on the ladder.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: April 3, 1984
    Inventor: Samuel D. Smith
  • Patent number: 4406350
    Abstract: A device for supporting a person on a ladder in which a frame is provided for extending around the ladder with sufficient clearance to move relative to said ladder. A portion of the frame extends at an angle relative to the remaining frame and inwardly towards the ladder. The frame can be connected to the person at a position that of said angularly-extending portion so that movement of the person downwardly on said ladder causes said angularly-extending portion to move between the ladder stays and engage a rung on said ladder to prevent further downward movement.
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: September 27, 1983
    Inventor: Samuel D. Smith