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US 5,107,654 AGranted
Foundation reinforcement chairs
OwnerNicola Leonardisinventor
Life of this patent
Estimating the term…
Abstract
A support chair for supporting reinforcement for foundations in which there is a turret shape and a lower base, the turret shape having a plurality of upwardly open slots into which the reinforced rods may be located the shape of each of the slots being such as to provide for interlocking of each rod particularly by providing a narrower part of the slot through which the rod must squeeze to a lower wider part.
Claims17
A support chair for supporting reinforcements for foundations comprising the combination of a planar base supporting a plurality of side stays attached to a central turret;
- the central turret comprising at least four upwardly open slots, with at least two of said upwardly open slots adapted to interengage with gripping effect on a reinforcement rod of circular cross section, the at least two upwardly open slots each having a plurality of upper edges presenting a smaller opening than a portion of the respective slot lying adjacent said upper edges;
- two of the slots being long slots and two of the slots having a short slots, the two long slots having a common axis located below an upper common axis for the two short slots, wherein said two long slots include two straight sides connecting a circular bottom portion adapted to support at least one reinforcement bar therein, wherein the width between said two straight sides is narrower than the adjacent circular bottom portion such that a reinforcement bar will cause deflection of the edges of said slot upon insertion into said circular bottom portion such that said at least on reinforcement bar will be held with negligible vertical freedom relative to said chair, and said two short slots are adapted to support at least one reinforcement rod above and in crossing relationship to any wherein said short support said reinforcement rod supported within the two long slots;
- each slot being located just above a respective side stay;
- each of said short slots being positioned between said long slots, such that no two like slots are adjacent one another;
- and said upper edges of said at least two slots comprising a plurality of fingers being formed in the central turret at locations adjacent said slots, these fingers deflecting outwardly from the center of each slot when the reinforcement rod is inserted into the respective slots.
2 more elements
In combination, a support chair for supporting reinforcements for foundations having a planar base supporting a plurality of side stays attached to a central turret comprising at least four upwardly open slots;
- at least two of the upwardly open slots being adapted to interengage with gripping effect on reinforcement rod of a circular cross section;
- the said at least two upwardly open slots each having a plurality of upper edges having a smaller opening than a lower portion of the respective slot;
- two of the slots having a long slot and two of the slots having a short slot, the two long slots having a common axis located below an upper common axis for the two short slots, wherein at least one reinforcement rod will sit in the two long slots, and at least one other reinforcement rod will sit in the two short slots above and in crossing relation to the rod positioned in the two long slots;
- each slot being located just above a respective side stay;
- said slots being arranged such that no two like slots are adjacent one another;
- and wherein the upper edges of said at least two slots comprise a plurality of fingers being formed in the central turret at locations adjacent said slots, these fingers deflecting outwardly from the center of each slot when a reinforcement rod is inserted into the respective slots;
- at least one reinforcement rod extending through and interengaged with at least two of the upwardly open slots of the chair, and
- a broadly extending base comprising a plurality of boxes supported on a broad surface in spaced relationship wherein a plurality of said support chairs are positioned on said plurality of boxes and engage said reinforcement rods for support thereof above said boxes.
5 more elements
A support chair for supporting reinforcement comprising the combination of a planar base supporting a plurality of side stays attached to a central turret;
- the central turret comprising at least four upwardly open slots and four upwardly open gaps;
- with the upwardly open slots adapted to support at least one reinforcement rod of circular cross section;
- two of the slots have a long slot and two of the slots have a short slot, the long slots having a common axis located below an upper common axis for the two short slots wherein at least one reinforcement bar will sit in the two long slots and at least one other reinforcement rod will sit in the two short slots above and in crossing relationship to the rod in the two long slots;
- each slot being located just above a respective side stay;
- each gap having one short slot on one side and one long slot on the other, such that no two like slots or gaps are adjacent one another;
- and a plurality of fingers being formed in the central turrent where at the upper edges of each slot and respective gap meet, these fingers deflect inward towards the center of each gap when a rod is inserted into the respective slots.
3 more elements
Dependencies are inferred from the claim text.