Patents by Inventor Richard E. Springer

Richard E. Springer 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).

  • Metal to plastic pipe transition fitting
    Patent number: 5988692
    Abstract: The present invention provides an improved metal to plastic pipe transition fitting. The transition fitting basically comprises a metal sleeve having a pair of metal pipe sections attached thereto and an annular groove within the interior thereof. A plastic pipe is disposed within the metal sleeve which extends through one of the metal pipe sections. The end of the plastic pipe within the metal sleeve includes a plurality of spaced plastic retention rings and a snap ring attached thereto and the snap ring is engaged within the annular groove in the metal sleeve. At least one O-ring is disposed between the retention rings on the plastic pipe and a metal stiffening insert is disposed within the end portion of the plastic pipe within the metal sleeve.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: November 23, 1999
    Assignee: Central Plastics Company
    Inventor: Richard E. Springer
  • Trunnion for hook and block assembly
    Patent number: 4549829
    Abstract: A trunnion assembly to interconnect the shank of a hook to a block, like a pulley block, includes trunnion pins that are assembled through the inner bore of a trunnion body and moved outward to extend from the bore into depending side plates of the block assembly and thus rotatably support the trunnion body and lock the pins in place.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: October 29, 1985
    Assignee: The Crosby Group, Inc.
    Inventors: Richard E. Springer, Gary R. Baxter