Expansion Anchor And Method For Expanding The Expansion Anchor
Patent No. EP4502401 (titled "Expansion Anchor And Method For Expanding The Expansion Anchor") was filed by Fischerwerke on Nov 2, 2021. The application was issued on Sep 3, 2025.
Patent Summary
An expansion anchor comprises an expansion body and an expansion sleeve featuring expansion tabs formed by longitudinal slots or recesses. The expansion body possesses spatially offset, separate expansion surfaces for each tab. These surfaces feature a first pitch in an axial direction and a superimposed second pitch in a circumferential direction, enabling expansion via axial displacement, rotation, or a combination thereof. The expansion body is torsionally and axially fixed to an anchor shaft. To prevent slippage during installation, the sleeve may include rotation and sliding locking tabs. Expansion is achieved by moving the expansion body relative to the sleeve, potentially driven by a nut screwed onto the anchor shaft, which transmits a rotational moment to intensify expansion via the circumferential pitch.
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Date
Description
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EP4502401
- Application Number
- EP24219626A
- Filing Date
- Nov 2, 2021
- Status
- Granted And Under Opposition
- Aug 1, 2025
- Publication Date
- Sep 3, 2025
- External Links
- Slate, Register , Google Patents