Patents Assigned to Roly-Door Sales Company of Rochester, Inc.
  • Safety gate assembly
    Patent number: 4422264
    Abstract: A safety gate assembly includes a pair of gates guarding a pre-selected area, the gates being coupled together with cables and pulleys so that one of the gates is always closed to prevent someone from accidentally walking through the area and being injured. The gates are balanced to make movement thereof easy and self-biased to stably open and closed positions.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 27, 1983
    Assignee: Roly-Door Sales Company of Rochester, Inc.
    Inventor: William S. Harris