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Cast-in-place through-penetration firestop device

Patent published on the 2025-05-21 in EP under Ref EP4556772 by HILTI AG [LI] (Tecson Joshua [us], Stroike Chad [us])

Abstract: A cast-in pass-through firestop device, comprising:a hollow tubular body comprising a first and a second overlapping tubular body part (10, 20);a bayonet locking mechanism, for adjusting the overlap, comprising:a key pin radially projecting from the first tubular body part,a key passage radially recessed in the second tubular body part,the key passage comprising at least two first sections being arranged in different planes perpendicular to the principal axis, and a second section arranged at le[...]

Our summary: Hollow tubular body with bayonet locking mechanism for adjusting overlap, sealing ring with sealing ridge, inlay made of intumescent firestop material.

firestop, cast-in-place, through-penetration, device

Patent