Patents by Inventor Richard L. Cotterell

Richard L. Cotterell 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).

  • Railroad hand brake chain link stripper
    Patent number: 4801288
    Abstract: A railroad car hand brake has a housing with a chain opening in said housing. There is a shaft mounted in the housing which mounts a chain drum which is rotated by a drive gear. The drum is formed and adapted to engage a link chain whereby turning of the drum moves the chain inwardly through the housing opening, around the drum and then outwardly through the housing opening. A chain stripper is attached to the housing and has a portion thereof positioned between the incoming and outgoing chain, in alignment with and extending toward the drum to prevent the chain from wrapping around the drum.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: January 31, 1989
    Assignee: Sloan Valve Company
    Inventors: Eugene W. Schmitt, Richard L. Cotterell