Shelter frame couplings
Patent 4505609 Issued on March 19, 1985. Estimated Expiration Date: 
April 14, 2003. 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 14, 2003. 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 1154883 2212455 3545796 3922481 InventorApplicationNo. 06/485300 filed on 04/14/1983US Classes:403/91, Including pivot stud403/170, Three or more radiating members403/174, Coplanar403/297Expansible sectionExaminersPrimary: Callaghan, Thomas F.Attorney, Agent or FirmInternational ClassesE04H 15/18 (20060101)E04H 15/00 (20060101) E04H 15/34 (20060101) AbstractCo-operating coupling members for securing together elongated tubular frame elements in the construction of a shelter. The said coupling members comprise two configurations, each of which is adapted to be received in the open end of an associated frame element. With these two coupling configurations, as many as five or more frame elements can be connected at a juncture at selected angles to each other. | |
