Seal for a lead-through for a tie rod through a panel formwork element
AssigneeMEVA Schalungs-Systeme GmbH
InventorsGerhard Dingler, Uwe Schramm, Rick Schille
Life of this patent
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Abstract
A seal for a lead-through for a tie rod through a panel formwork element. The seal includes a sleeve, a sealing element and a sliding tube, which are disposed on the tie rod and, together with the tie rod, are placed through the panel formwork element from a rear side, so that the sealing element exits the panel formwork element on a front side and, after brief pulling back of the tie rod, provides sealing between the sleeve and the panel formwork element, for one-sided anchoring.
Claims13
A method for setting up a concrete formwork, comprising a formwork element including a formwork shell, the formwork shell including a tie hole for leading through a tie rod which is used for a tension-resistant connection of the formwork element to a further formwork element set up at a distance opposite thereof, wherein a tie rod is placed through the tie hole in the formwork shell from a rear side so as to protrude on the front side and the rear side of the formwork shell, a tubular or annular, elastic and/or plastic sealing element is disposed on the tie rod in a longitudinally displaceable manner, the largest diameter thereof being greater than a diameter of the tie hole in the formwork shell, the sealing element, together with the tie rod, passes through the tie hole in the formwork shell so as to reach the front side of the formwork shell, the sealing element is elastically compressed when passing through the tie hole in the formwork shell, and the largest diameter thereof, after passing through the tie hole in the formwork shell, elastically expands to a diameter that is greater than the diameter of the tie hole in the formwork shell.
A tubular or annular sealing element for sealing a lead-through for a tie rod through a tie hole in a formwork shell of a formwork element for concrete formwork, the sealing element expanding on the outside, toward an end face, from a diameter that is not greater than a diameter of the tie hole in the formwork shell to a diameter that is greater than the diameter of the tie hole in the formwork shell, wherein the sealing element is radially resilient so as to be elastically constrictable to a diameter that is not greater than the diameter of the tie hole in the formwork shell, and a wall thickness of the sealing element is not greater than one half the difference in diameter between the tie hole in the formwork shell and the tie rod.
Dependencies are inferred from the claim text.