Patents by Inventor Ian William Stimpson

Ian William Stimpson 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).

  • Safe load indicator for jib cranes
    Patent number: 4098410
    Abstract: An overload warning device for use in a crane having a telescopic jib which includes, in a transmission between a slave jib and a pointer, a bank of cams each appropriate for a different length of jib, a common follower cooperable with the cams, and a selector mechanism operable automatically in response to change in the jib length for effecting relative movement between the follower and the cams to bring the follower into cooperation with the cam corresponding to the newly selected jib length.
    Type: Grant
    Filed: February 15, 1977
    Date of Patent: July 4, 1978
    Assignee: Weighload Limited
    Inventors: Brian George Nixon, Ian William Stimpson