Waterproof rain, flood, and storm protection device for light and basement shafts of buildings
A rust-protected metal cover with integrated seals and clamping devices secures light and basement shafts against water ingress, addressing vulnerabilities and ensuring rapid, effective waterproofing.
Patent Information
- Application Number
- DE202025000295
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-01-29
- Publication Date
- 2025-04-30
- Estimated Expiration
- 2035-01-31
AI Technical Summary
Light and basement shafts are vulnerable to water penetration during heavy rain or floods, causing significant damage to buildings.
A rust-protected metal cover with integrated seals and a tensile clamping device is used to create a waterproof seal on light or basement shafts, ensuring compliance with DIN 18533 W2.2-E standards, and includes features like flexible hanging icons, pull chains, carabiner hooks, and clamping locks for secure attachment.
The solution effectively prevents water ingress, providing a quick and secure waterproofing mechanism that can be installed by one person, even in high-risk scenarios.
Smart Images

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Abstract
Description
Initial situation:
[0001] Light shafts and cellar shafts are sources of danger for the penetration of large amounts of water during heavy rain or flooding and cause enormous damage to buildings. Solution:
[0002] A rust-proof metal cover with integrated seals and tensioning device for additional attachment to the light or cellar shaft edge, ensuring it is watertight in accordance with DIN 18533 W2.2-E. Water height >3m
[0003] In case of danger or severe weather warnings, a sheet metal cover is placed on the upper edges of the light or brick cellar shaft. Fig. 1, (1) with integrated seals, Fig. 1 (2) and Fig. 5, (3) to the rear masonry and to the edge of the shaft.
[0004] The cover is equipped with flexible eyelets on the underside, Fig. 1 (5) for pull chains and Fig. 3 (6) equipped.
[0005] The pull chains are attached via snap hooks Fig. 3 (7) with turnbuckles Fig. 3 (8) connected.
[0006] By hooking the snap hook into a selected chain link of the chain Fig. 3 (6) the necessary length of the chain is set to achieve sufficient tension for the contact pressure of the seals.
[0007] The turnbuckles Fig. 3 (8) are then fixed with wall anchors Fig. 3 (9) with eyelets on the window sill wall through snap hooks Fig. 3 (7) connected.
[0008] By turning the turnbuckles Fig. 3 (8) the maximum tensile load for watertight pressing of the seals Fig. 1 (2) to the light well edge and rear masonry.
[0009] If the opening of the light or cellar shaft is higher than ground level, an additional steel plate is required. Fig.5 (3) can be used with rear circumferential seals on the masonry.
[0010] The choice of materials and the chosen construction are designed in such a way that the installation and assembly can be carried out by just one person in a short time. List of reference symbols 1 steel sheet, rust-protected 2 Seal 3 foam rubber seal 4 hammer screws 5 Angle piece made of steel, rust-protected 6 Welded chain, rust-protected 7 snap hooks, stainless steel 8 Turnbuckle with eyelets, stainless steel 9 wall anchors with eyelet 10 Rear panel cover, optional
Claims
[1] Rust-protected sheet metal construction, ready for installation, with all functional parts for a watertight cover in accordance with DIN 18533 W2.2-E. Water height > 3 m. [2] Sheet metal cover in light or cellar shaft size with pressure seals on all sides on the underside. [3] Tensioning device made of pull chains and turnbuckles connected on the underside to the sheet metal cover and the outer wall of the cellar shaft. [4] Pull chain length can be flexibly adjusted using snap hooks to the required length for sufficient tensile load for watertight contact pressure of the seals. [5] The construction is designed in such a way that both in terms of weight and handling, assembly can only be carried out by one person.