Static structures (e.g. – buildings) – Relatively yieldable preformed separator – Separator inserted prior to or during pouring of two...
Patent
1996-01-16
1998-02-03
Wood, Wynn E.
Static structures (e.g., buildings)
Relatively yieldable preformed separator
Separator inserted prior to or during pouring of two...
523961, 52318, 404 52, 404 59, 404 62, 404 74, E04F 1514, E04B 1682
Patent
active
057131740
ABSTRACT:
A concrete dowel slab joint system for maintaining adjacent sections of concrete in alignment during contraction and expansion of the concrete, and for transferring shear stresses and bending moments across a joint formed between adjacent concrete slabs. It includes a sleeve assembly for receiving and maintaining the dowel bar therewithin. In this is way, the dowel bar does not transmit substantial shear stresses to the concrete during the contraction and expansion of the concrete. The sleeve assembly comprises an elongate sleeve body having an outer surface and an inner surface, and defining a hollow interior compartment, (b) at least one closed end, and (c) at least one collapsible spacer member located within the hollow interior compartment. The collapsible spacer member engages and positions the dowel bar at a lateral distance from the inner surface of the elongate sleeve body and at a longitudinal distance from the closed end. These lateral and longitudinal distances together define an expansion area between the dowel bar and the sleeve assembly. The spacer member is collapsible by interactive forces exerted by the dowel bar moving in a lateral and/or longitudinal path within the hollow interior compartment in response to the expansion and contraction of the concrete.
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patent: 5470174 (1995-11-01), Hu et al.
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Kang Timothy B.
Wood Wynn E.
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