Patents Assigned to Specialty Hoisting Services, Inc.
  • Patent number: 4880210
    Abstract: Disclosed herein is a hoistway door assembly for use with temporary hoists. The assembly includes a center member pivotable about either a first or a second axis. The center member is latchable from either the front or back sides and has stacking portions. The assembly includes wing members rotatable about the first or second axis and being interchangeable with one another. The wing members have stacking portions for mateable connection with the center member stacking portions. The center member is symmetrical about its horizontal centerline and the stacking portions are also symmetrical about the center member vertical centerline. The wing members stacking portions are likewise symmetrical about the vertical wing members centerline.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: November 14, 1989
    Assignee: Specialty Hoisting Services, Inc.
    Inventor: Fred Cucksey