Structural elements
Patent 5809713 Issued on September 22, 1998. Estimated Expiration Date: 
May 13, 2016. 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 13, 2016. 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 1176366 1504816 2075633 2645115 3251162 Structural member and system Structure of lightweight bars and connector means therefore Building structure utilizing precast concrete elements Reinforced lumber Process of making a structural cable InventorAssigneeApplicationNo. 645353 filed on 05/13/1996US Classes:52/223.9, Composed of abutting sections52/223.7, Composed of abutting modular panels or blocks52/223.8Beam, girder, or truss constructionExaminersPrimary: Aubrey, Beth A.Attorney, Agent or FirmForeign Patent References
International ClassesE04C 005/08726.4 223.11 223.12 223.13 724.3 73 AbstractA structural beam (10,20) including a plurality of transversely extending discrete timber pieces (12) arranged in alignment, each timber piece (12) having opposed parallel faces which abut with equivalent faces of adjacent pieces, aligned apertures being formed in the pieces and a longitudinally extending prestressing cable (14) passing through the aligned apertures under tension so as to press the aligned pieces together.Other References
Field of SearchWITH COMPONENT HAVING DISCRETE PRESTRESSING MEANSAxially loaded vertical structure (e.g., column, derrick) Beam, girder, or truss construction Composed of abutting sections Specific prestressing means Wood/metal composite Composed of stacked sections Composed of abutting modular panels or blocks End-to-end connected sections Beam or girder type with feature resisting transverse loading Section filling hollow or channel module Beam Upright | |
