Patents by Inventor Richard Henry Crampton

Richard Henry Crampton 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).

  • Ladder with cushioning pad
    Patent number: 8322491
    Abstract: A stepladder includes first and second legs and a plurality of treads, wherein each first and second leg forms a separate channel for receiving the treads. A pad installed in the stepladder includes has a first portion residing under compression within the channel of the first leg between adjacent treads and a second portion residing outside of the channel of the first leg to provide the cushion for a worker when carrying the stepladder on his or her shoulder. The pad, suitably consisting of closed-cell foam, is held within the channel by frictional forces between the resilent pad, the first leg and the adjacent treads.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: December 4, 2012
    Assignee: Working Concepts, Inc.
    Inventor: Richard Henry Crampton