Patents Examined by Mike Cunningham
  • Modular anti-spin unit for railway car door
    Patent number: 4920894
    Abstract: A modular add-on unit provides (14) anti-spin protection for a gear-operated locking system (13) of plug-in railway freight car doors (12). The unit has an input shaft (26) with a handle (36) attached thereto, and an output shaft (42) with a recess (40) therein configured for direct engagement with industry standard door shafts. An anti-spin mechanism (24) disposed within a housing (17) couples the two shafts together, and the housing is attached to the outer surface (42) of the door, preferably by welding.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: May 1, 1990
    Assignee: Railcar Specialties, Inc.
    Inventor: Mell R. Thoman