Expansion joint and form for concrete floors
First Claim
1. An expansion joint and form for a horizontal concrete base supported by a rock bed ground, comprising:
- a rigid rectangular main panel having a longitudinally edgewisely transverse integral bottom flange abutting against the ground for supporting said panel in upright position;
a rectangular compression board, longitudinally edgewisely ground supported and flatly abutting against the face of said panel opposite said bottom flange and made from a compressible partially resilient material;
a few dowel rods, each transversely horizontally extending through a pair of registering bores in said panel and board spacedly over said bottom flange and partially slidably engaging at one end thereof a sleeve member which is closed at its outer end, said rods projecting from both sides of said compression board and main panel;
an upper flange, transversely extending from and fixedly secured to an upper section of said main panel parallel to and in vertical register with said bottom flange;
a few small centrally bored rigid hook plates, transversely downwardly extending from and fixedly connected to an outer section of said upper flange parallel to said main panel, each small bored plate being in horizontal register with said pair of said registering bores of said main panel and compression board and transversely supportingly engaged by a corresponding said dowel rod; and
anchor stakes, each transversely extending at regular lengthwise intervals through said upper and bottom flanges parallel to said main panel and anchoringly driven into said rock bed;
wherein fresh concrete is poured first over the dowel rods sections projecting beyond said compression board at the panel side opposite to said bottom flange, and after complete curing of this concrete, fresh concrete is poured thereafter over the opposite dowels rods sections, whereby two opposite concrete slabs horizontally spaced by said expansion joint are thus obtained.
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Accused Products
Abstract
An expansion joint and form for concrete floors, consisting of a free-standing assembly comprising a vertical asphaltic board, a metallic panel flatly abutting against the asphaltic board, and a number of load transfer dowels or rods slidingly passing horizontally through the board and panels to extend on each slide of the panel and board. The rod partially engages at one end a sleeve and one rod section is covered with grease. After fresh concrete is successively poured on each side of the expansion joint, the concrete will harden unto the board, the panel and the sleeve exclusively of the rod section covered with grease. Hence, the rod will be movable relative to the sleeve and surrounding concrete slab, allowing for relative horizontal displacement of the pair of proximate concrete slabs.
26 Citations
6 Claims
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1. An expansion joint and form for a horizontal concrete base supported by a rock bed ground, comprising:
- a rigid rectangular main panel having a longitudinally edgewisely transverse integral bottom flange abutting against the ground for supporting said panel in upright position;
a rectangular compression board, longitudinally edgewisely ground supported and flatly abutting against the face of said panel opposite said bottom flange and made from a compressible partially resilient material;
a few dowel rods, each transversely horizontally extending through a pair of registering bores in said panel and board spacedly over said bottom flange and partially slidably engaging at one end thereof a sleeve member which is closed at its outer end, said rods projecting from both sides of said compression board and main panel;
an upper flange, transversely extending from and fixedly secured to an upper section of said main panel parallel to and in vertical register with said bottom flange;
a few small centrally bored rigid hook plates, transversely downwardly extending from and fixedly connected to an outer section of said upper flange parallel to said main panel, each small bored plate being in horizontal register with said pair of said registering bores of said main panel and compression board and transversely supportingly engaged by a corresponding said dowel rod; and
anchor stakes, each transversely extending at regular lengthwise intervals through said upper and bottom flanges parallel to said main panel and anchoringly driven into said rock bed;
wherein fresh concrete is poured first over the dowel rods sections projecting beyond said compression board at the panel side opposite to said bottom flange, and after complete curing of this concrete, fresh concrete is poured thereafter over the opposite dowels rods sections, whereby two opposite concrete slabs horizontally spaced by said expansion joint are thus obtained. - View Dependent Claims (2, 3, 4, 5, 6)
- a rigid rectangular main panel having a longitudinally edgewisely transverse integral bottom flange abutting against the ground for supporting said panel in upright position;
Specification