Roadway expansion joint
Patent 4279533 Issued on July 21, 1981. Estimated Expiration Date: 
February 20, 2000. 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.
February 20, 2000. 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 2220628 3430544 3520236 3555982 3595142 3722379 3790294 3810707 3849958 Expansion joint cover InventorsAssigneeApplicationNo. 06/122920 filed on 02/20/1980US Classes:404/68, Strip or filler plus supporting bracket404/74Providing expansion jointExaminersPrimary: Bonck, Rodney H.Attorney, Agent or FirmInternational ClassesE01D 19/00 (20060101)E01D 19/06 (20060101) AbstractA roadway sealed expansion joint between roadway sections spaced by an expansion slot, the roadway sections having recesses adjacent and extending longitudinally of the slot. A metal plate bridges the slot and is secured to the bottom of the recess in one of the sections and is movable relative to the bottom of the recess in the other of the sections. Overlying the metal plate is a unitary elastomeric slab with its upper surface aligned with the upper surfaces of the concrete sections and with its edges bonded to the sides of the recesses, this elastomeric slab having a center premolded portion of relatively high elasticity and edge portions which are molded in situ and which are of relatively low elasticity. | |
