Patents by Inventor Tim Abblett

Tim Abblett 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: 4727996
    Abstract: A grab assembly for handling articles such as hot and cold steel ingots and molds, characterized by multiple current relays and limit switches that enable selection of different grip forces. The assembly comprises complemental tongs, an electrically powered drive for actuating the tongs and compressing springs which resiliently restrain the tongs in gripping engagement with an article, an electrically operated holding brake for maintaining such resilient restraint of the tongs, and a selector for rendering operative any one relay and corresponding limit switch which redundantly operate to stop the powered drive and set the holding brake in response to motor current and spring compression reaching respective predetermined amounts corresponding to a respective desired gripping force at the tongs. Also disclosed is a crane employing the grab assembly.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: March 1, 1988
    Assignee: AMCA International Corp.
    Inventors: Ronald L. Fenn, Tim Abblett, John Sanor