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US 4,393,639 AGranted
Reinforcing element and process for its manufacture
OwnerFranz Bucherinventor
Life of this patent
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OwnerFranz Bucherinventor
Estimating the term…
A reinforcing insert for a tension zone of a ferroconcrete member comprises two or more closely juxtaposed, parallel rods of different lengths and with staggered extremities, each shorter rod being connected at least at its ends to an adjoining longer rod by elongate weld joints of sufficient strength to transfer its tensile stress to that longer rod. The weld joints may be formed by transversely inserting a fusible wire between two reinforcing rods and pressing the latter together with the aid of two electrodes between which a heating current is being passed. Laterally projecting parts of that wire, left in place after the welding operation, may serve as anchor studs and/or as spacers establishing the requisite separation from associated falsework.
A reinforcing insert to be embedded in a tension zone of a ferroconcrete member, comprising an assembly of parallel, closely juxtaposed steel rods including at least one through-going main rod and at least one ancillary rod of lesser length adjoining same, said ancillary rod being connected with said main rod along a plurality of elongate stretches, two of said stretches being located at the ends of said ancillary rod which are offset from the extremities of said main rod to an extent letting the tensile strength of said assembly vary in approximate conformity with the moment line of said ferroconcrete member, said stretches having cross-sectional areas of sufficient strength to transfer the tensile stress of said ancillary rod from the ends thereof to said main rod.
A process for making a reinforcing insert to be embedded in a tension zone of a ferroconcrete member,
Dependencies are inferred from the claim text.