Orba-hub
Patent 4438615 Issued on March 27, 1984. Estimated Expiration Date: 
November 30, 2001. 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.
November 30, 2001. 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 3921360 Building kit for the production of three-dimensional frameworks System for constructing spatial structures Prefabricated spatial structure Patent #: 4313687 InventorAssigneeApplicationNo. 06/325801 filed on 11/30/1981US Classes:52/655.2, Spheroidal403/171, Polyhedral403/176PolyhedralExaminersPrimary: Murtagh, John E.Assistant: Safavi, Michael Attorney, Agent or FirmInternational ClassesE04B 1/19 (20060101)F16B 7/18 (20060101) AbstractA hub for use in a space frame assembly which can be joined to a like hub by a strut member by bolt means connecting the strut to the hub in a preset spacing and in which the bolt means includes spherical bearing surfaces for positioning and a column member surrounding each bolt means to provide a compression load transfer path. | |
