Patents by Inventor Robert B. Bishop

Robert B. Bishop 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).

  • Telescopic jib
    Patent number: 4733598
    Abstract: A telescopic device for use in a crane jib, forklift truck, lighting tower, access platform or the like, having at least two extandable sections extending from a base section, in which each said extendable section is extended by a piston and cylinder assembly and in which, to extend the device, a similar hydraulic pressure is applied in the extension mode to all the assemblies and different hydraulic pressures are caused to exist in all the assemblies in the retraction mode, so that a selective extension sequence of the sections is effected.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: March 29, 1988
    Assignee: The 600 Group PLC
    Inventors: Gordon Innes, Robert B. Bishop