Stadium cover
Patent 4257199 Issued on March 24, 1981. Estimated Expiration Date: 
May 31, 1999. 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.
May 31, 1999. 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 1651391 2000515 2692566 3169542 3370380 3577691 3660951 3736754 Pneumatic shipping enclosures Eccentricity eliminating cable-fabric connection apparatus for air supported roof structures Patent #: 4167086 InventorApplicationNo. 06/044056 filed on 05/31/1979US Classes:52/2.17, Including ingress/egress provision135/87, PORTABLE SHELTER (I.E., TENT OR CANOPY)135/908, SUPER TENT OR CANOPY49/104, Closures mounted for swinging49/110, With operator or energy stored opening means49/366, BIPARTITE, CENTER OPENING52/2.19, Supported on rigid-walled structure52/6, WITH STADIUM OR AUDITORIUM FEATURE52/63, ENCLOSURE INCLUDING FLACCID NONMETALLIC OR FORAMINOUS SURFACING52/72Movable cupola or section thereofExaminersPrimary: Bell, J. KarlAttorney, Agent or FirmInternational ClassesE04H 15/20 (20060101)E04H 3/14 (20060101) E04H 15/22 (20060101) AbstractA stadium cover includes a pair of complemental compartmented canopies which are filled with a gas such as helium and which are moored or anchored by two or more winches to enable selective manipulation of their position. The winches act through cable sets that interconnect the winches with the canopies, and pulley means are provided to furnish several points for mooring and moving forces used in the control of the canopies. | |
