Rotary elevator car door coupling
Patent 5485896 Issued on January 23, 1996. Estimated Expiration Date: 
April 6, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 6, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2432293 2626018 Inventors
AssigneeApplicationNo. 223926 filed on 04/06/1994US Classes:187/330, With means to couple to barrier on load support49/120Bipartite, center-opening type; e.g., elevator doorExaminersPrimary: Noland, KennethInternational ClassB66B 013/12AbstractA horizontally stiff, but vertically yielding coupling between an elevator car door and an elevator hoistway door includes a brushless torque actuator which rotates a member (disposed on the elevator door) between a first, clearance position and a second, coupling position where it becomes wedged between the walls of a channel disposed on a hoistway door. The member may have rollers to make contact with the walls of the channel, or it may simply have sliding surfaces for contact with the channel. | |
