PROTECT-O-ARM

ELECTRICALLY-OPERATED AND HYDRAULICALLY-OPERATED AND PNEUMATICALLY-OPERATED AND LEVER-OPERATED AND TREADLE-OPERATED GATES FOR BRIDGES, RAILROAD CROSSINGS, AND THE LIKE, AND FOR ELECTRICALLY-OPERATED AND HYDRAULICALLY-OPERATED AND PNEUMATICALLY-OPERATED AND LEVER-OPERATED AND TREADLE-OPERATED TRAFFIC BARRIERS OF THE POSITIVE OR YIELDING TYPES FOR CLOSING ROADWAYS, PATHS, AND OTHER RIGHTSOF-WAY TO VEHICULAR OR PEDESTRIAN TRAFFIC