Patents by Inventor Ralph R. Schoenick

Ralph R. Schoenick 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).

  • Chain having pivot pins also preventing disassembly
    Patent number: 4267691
    Abstract: The center link of a trolley conveyor chain of thermoplastic construction is provided with a bushing insert for the pin which is pivotable on oppositely projecting studs of the center link. The studs also prevent the free movement of the pin in the slot and serve as detents to prevent the unintended disassembly of the chain.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: May 19, 1981
    Assignee: Rexnord Inc.
    Inventor: Ralph R. Schoenick
  • Chain having disassembly detent
    Patent number: 4198814
    Abstract: A chain of the trolley conveyor type has T-headed pins and links with slots at each chain joint for assembly and disassembly wherever desired. The slots of the center link are slightly restricted to prevent disassembly when not desired, as in handling the chain. Also, U-shaped center link bushings in which the pins are turnable and with which the pins may pivot for chain side-flexing provide a restriction to assembly and disassembly and particularly the latter so that unintended disassembly is prevented.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: April 22, 1980
    Assignee: Rexnord Inc.
    Inventor: Ralph R. Schoenick