Tying bar for concrete joints
Patent 4733513 Issued on March 29, 1988. Estimated Expiration Date: 
October 21, 2006. 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.
October 21, 2006. 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 ReferencesInventorsApplicationNo. 06/921594 filed on 10/21/1986US Classes:52/396.02, Separator inserted prior to or during pouring of two adjacent concrete sections404/56, With mid-slab bridge means404/59, End cushioned or lubricated dowel404/67Compound or compositeExaminersPrimary: Perham, Alfred C.Attorney, Agent or FirmInternational ClassesE01C 11/02 (20060101)E01C 11/14 (20060101) E04B 1/48 (20060101) AbstractAn improved dowel or tying bar and joint construction for transferring stresses across a joint between concrete slabs or structures and accommodating for shrinkage and expansion of concrete. The bar has a resilient facing attached to at least one side of the bar so that the concrete slab or structure can move in relationship to the bar in a direction substantially perpendicular to the resilient facing. The bar is arranged across the joint in a direction substantially perpendicular to the axis defined by the joint. | |
