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US 11,047,143 B2Granted
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
Estimating the term…
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.
Claims5
A formwork system comprising:
- a formwork element including a formwork shell, wherein the formwork shell includes a tie hole through which a tie rod is guided, the diameter of the tie hole in the formwork shell being greater than a diameter of the tie rod;
- a tubular or annular sealing element for sealing a lead-through for the tie rod through the tie hole in the formwork shell of the formwork element for concrete formwork, the sealing element expanding on the outside, toward an end face, from a diameter of the sealing element that is not greater than a diameter of the tie hole in the formwork shell to a diameter of the sealing element 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 when passing through 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, wherein the sealing element surrounds the tie hole in the formwork shell and sealingly rests against a front side of the formwork shell;
- and
- a sleeve which is disposed on the tie rod on the front side of the formwork shell, the sealing element providing sealing between the sleeve and the formwork shell;
- wherein the sealing element comprises a cylindrical tube-shaped section, which can be pushed onto the tie rod, the outside diameter of which is not greater than the diameter of the tie hole in the formwork shell, and a hollow truncated cone-shaped section, which expands on the outside, toward an end face of the sealing element, from a diameter that is not greater than the 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.
2 more elements
Dependencies are inferred from the claim text.