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US 4,007,994 AGranted
Expansion joint with elastomer seal
AssigneeThe D. S. Brown Company
InventorDelmont D. Brown
Life of this patent
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AssigneeThe D. S. Brown Company
InventorDelmont D. Brown
Estimating the term…
An expansion joint with an elastomer seal having longitudinal frames made from aluminum extrusions extending longitudinally of an expansion joint for pavements and bridge decks. The longitudinal frames are mounted by anchor bolts in the pavement or bridge deck concrete, which pavement or bridge deck has a concrete or asphaltic wear surface. The elastomer seal is fixedly held in the longitudinal frames by elongated tongue and groove means, and the joint space is spanned by at least one shallow, V-shaped elastomer wall which deforms downwardly as the joint width becomes narrower. The longitudinal frames are held in position in steps in the concrete adjacent to the joint by the anchor bolts, at least some of which have threaded ends projecting upwardly through the bottom wall into an upwardly facing longitudinal channel. The joint-remote outer face of the end wall of the frames has a slight transverse taper from its top edge to its bottom edge to facilitate release of the frames from abutting pavement when removing the frames from the steps.
An expansion joint frame structure with an elastomer seal and tread comprising a pair of opposed, elongated, side frames adapted to be mounted on respective steps in the upper corners of a pavement or a bridge deck expansion joint, an elongated elastomer seal removably mounted on said side frames and extending therebetween, said side frames each having a bottom wall adapted to rest on a step in the pavement or bridge deck in the respective upper corners of the joint and further having a joint-remote, upstanding end wall, said bottom wall having a downwardly opening slot extending longitudinally of its respective side frame adjacent the intersection of said end wall and said bottom wall, and an elongated elastomer gasket strip mounted in said slot to provide a longitudinal seal adapted to provide a longitudinal water tight seal between the lower, joint remote corner of said frame and said step, said bottom wall having therein a plurality of longitudinally spaced holes through which protrude upwardly respectively threaded ends of downwardly extending anchor bolts, and nuts threaded on respective threaded ends of said anchor bolts and seated against the upper surface of said bottom wall, whereby said nuts are accessible from the upper side of said side frame for removal of said nuts from said anchor bolts in order to remove said side frame from said step for repair or replacement.
An expansion joint structure with an elastomer seal and tread comprising a pair of opposed, elongated, side frames adapted to be mounted on respective steps in the upper corners of a pavement or a bridge deck expansion joint, an elongated elastomer seal removably mounted on said side frames and extending therebetween, said side frames each having a bottom wall adapted to rest on a step in the pavement or bridge deck in the respective upper corners of the joint and further having a joint-remote, upstanding end wall, the joint-remote, outer face of said end wall being a substantially vertical wall with its lower portion recessed relative to its upper portion, said pavement or bridge deck having a lower layer of concrete and an upper wear course layer of asphalt or concrete, a water impermeable membrane laid between said layers, and an edge portion of said membrane being positioned in said recessed lower portion of said end wall.
Dependencies are inferred from the claim text.