Sidewalk-curb sealing member, assembly and method

Claim 1

A corner sealing member for sealing a portion of a gap between adjacent roadway slabs at the intersection of curb and sidewalk portions thereof, said member being formed of a thin, flexible elastomeric material, and comprising a pair of first, generally flat coplanar expansive sealing flaps, one extending sidewardly from each side of a first central, flexible membrane which is adapted to overlie a portion of a said gap, a pair of second, generally flat expansive sealing flaps, formed with said first flaps at front edges of said first flaps and extending downwardly and away from said first flaps, one of said second flaps extending sidewardly from each side of a second flexible membrane which is adapted to overlie a portion of a said gap, said first and second membranes being continuous and merging into each other to form a corner, each of said membranes terminating forwardly in an end face, the end faces closing the forward ends of the membranes, respectively, and with said membranes forming said corner, said end faces being disposed to promote movement of the end faces toward and away from each other when the gap portion widens and narrows, whereby when a said corner Member is sealingly secured to roadway slab portions to overlie a portion of a gap adjacent the intersection of curb and sidewalk portions of said slabs, a seal will be provided at a said gap portion.

Claim 22

A method of sealing the gap between roadway slabs of the intersection of curb and sidewalk portions thereof, the steps comprising providing a sealing dam section comprising a pair of generally parallel, spaced-apart elongate side pads, each said side pad having longitudinal side edges, an outer surface, an inner surface and spaced lower and upper ends, and a thin elongate flexible joint membrane sealingly secured to said side pads, the upper end of each of said side pads defining a slot extending from one longitudinal side edge toward the other longitudinal side edge and from said upper end toward, but stopping short of the lower end, sealingly securing said sealing dam section to curb portions of said slabs with said joint membrane overlying said curb gap, providing a corner member formed of a thin, flexible elastomeric material, said corner member comprising a pair of first, generally flat coplanar expansive sealing flaps, one extending sidewardly from each side of a central, flexible membrane portion, a pair of second, generally flat expansive sealing flaps, formed with said first flaps at front edges of said first flaps and extending downwardly anD away from said first flaps, one of said second flaps extending sidewardly from each side of a second flexible membrane portion, said first and second membrane portions being continuous and merging into each other to form a corner, securing said corner member to said roadway slab portions with said second flaps disposed within said slots, with said first membrane portion overlying said sidewalk gap and with said second membrane portion overlying said joint membrane, and sealing said corner member to said slabs and to said sealing dam section, thereby to seal the intersection of said curb and sidewalk portion of said slabs.

Claim 23

A method of sealing the gap between roadway slabs of the intersection of curb and sidewalk portions thereof, the steps comprising providing a sealing dam section comprising a pair of generally parallel, spaced-apart elongate side pads, each said side pad having longitudinal side edges, an outer surface, an inner surface and spaced lower and upper ends, and a thin elongate flexible joint membrane sealingly secured to said side pads, the upper end of each of said side pads defining a slot extending from one longitudinal side edge toward the other longitudinal side edge and from said upper end toward, but stopping short of the lower end, sealingly securing said sealing dam section to curb portions of said slabs with said joint membrane overlying said curb gap, providing a corner member formed of a thin, flexible elastomeric material, said corner member comprising a pair of first, generally flat coplanar expansive sealing flaps, one extending sidewardly from each side of a central, flexible membrane portion, a pair of second, generally flat expansive sealing flaps, formed with said first flaps at front edges of said first flaps and extending downwardly anD away from said first flaps, one of said second flaps extending sidewardly from each side of a second flexible membrane portion, said first and second membrane portions being continuous and merging into each other to form a corner, securing said corner member to said roadway slab portions with said second flaps disposed within said slots, with said first membrane portion overlying said sidewalk gap and with said second membrane portion overlying said joint membrane, and sealing said corner member to said slabs and to said sealing dam section, thereby to seal the intersection of said curb and sidewalk portion of said slabs.