Arris protection joint
First Claim
1. An arris protection joint for edging the arrises of cured material pourable on opposite sides of the joint prior to curing, the joint comprising:
- an opposed pair of elongate arris members for edging the cured material, the arris members being;
complementarily formed along their length with a wave shape, with each member extending across a mid-plane of the joint from one side of the joint to the other side of the joint and back again at successive positions along the joint, whereby on pouring of a curable material it is formed into inter-digitated fingers edged by the arris members and extending through the depth of the curable material, corresponding to a width of the arris members, and the arris members having;
means for anchoring them in a respective repair material on opposite sides of the joint andsupport adaptations being apertures with adjustable supports engaged within the support adaptations to provide the arris members support in a cavity with their tops at least substantially flush with concrete slabs andthe arris members are of moulded polymeric material andthe arris members have integrally moulded spacers for holding them at a separation from each other.
1 Assignment
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Accused Products
Abstract
The joint comprises a pair (12, 14) of complementary engineering grade polymer injection moldings. Each molding is comprised of generally equal length oblique webs (15), set at 60° to a mid-plane (16) of the assembled joint, shorter, inner webs (17) and a longer, outer webs (18). Centrally of each outer web (18) is an aperture (21) and centrally of each inner web is a pin (22) with a step (23) and a pointed head (24). The heads of one molding clip into the apertures of the other while the steps determine their separation gap (25). The trapezium wave shape of the joint provides re-entrants (31) from the plane of the outer webs (18) towards that of the inner webs. Outwards of the re-entrants extend anchoring formations (33). Behind each re-entrant these formations are joined by a tab (34).
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Citations
20 Claims
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1. An arris protection joint for edging the arrises of cured material pourable on opposite sides of the joint prior to curing, the joint comprising:
an opposed pair of elongate arris members for edging the cured material, the arris members being; complementarily formed along their length with a wave shape, with each member extending across a mid-plane of the joint from one side of the joint to the other side of the joint and back again at successive positions along the joint, whereby on pouring of a curable material it is formed into inter-digitated fingers edged by the arris members and extending through the depth of the curable material, corresponding to a width of the arris members, and the arris members having; means for anchoring them in a respective repair material on opposite sides of the joint and support adaptations being apertures with adjustable supports engaged within the support adaptations to provide the arris members support in a cavity with their tops at least substantially flush with concrete slabs and the arris members are of moulded polymeric material and the arris members have integrally moulded spacers for holding them at a separation from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification