Patents by Inventor James R. Plair

James R. Plair 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: 8388033
    Abstract: A modular lifting beam comprises two, substantially vertical plates held in parallel, spaced-apart relation by one or more spacers. The modular lifting beam is equipped with a set of staggered mounting lugs at each end of the beam. The mounting lugs have holes passing from the upper surface to the lower surface and are configured such that two or more modular beams may be joined together in end-to-end fashion by inserting pins through their vertically-aligned lugs.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: March 5, 2013
    Assignee: Alltec Lifting Systems LLC
    Inventor: James R. Plair
  • Publication number: 20110140469
    Abstract: A modular lifting beam comprises two, substantially vertical plates held in parallel, spaced-apart relation by one or more spacers. The modular lifting beam is equipped with a set of staggered mounting lugs at each end of the beam. The mounting lugs have holes passing from the upper surface to the lower surface and are configured such that two or more modular beams may be joined together in end-to-end fashion by inserting pins through their vertically-aligned lugs.
    Type: Application
    Filed: November 23, 2010
    Publication date: June 16, 2011
    Inventor: James R. Plair
  • Patent number: 5603544
    Abstract: A compression cap assembly for the end of a spreader bar or pipe used in lifting heavy loads with a crane includes a compression plate, spaced-apart plate members on the outer side of the compression plate that carry upper and lower pins that extend through loops on the ends of cables, and semicircular coupling members on the inner side of the compression plate that receive an end portion of the spreader pipe. The coupling members having clearance between the adjacent edges thereof, and fasteners are used to reduce the clearance and cause the coupling members to tightly clamp and grip such end portion.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 18, 1997
    Assignee: Maxibar, L.P.
    Inventors: David J. Bishop, James R. Plair