Flush bolts

The flush bolt with a C-, U-, or L-shaped cross-section wraps around door seals, addressing the issue of gaps and maintaining sealing integrity, providing a continuous barrier against air, sound, and smoke.

EP3710660B1Active Publication Date: 2026-07-01ASSA ABLOY LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
ASSA ABLOY LTD
Filing Date
2018-11-07
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Existing flush bolts disrupt the sealing function of door seals when deployed, allowing gaps for air, sound, and smoke to pass through.

Method used

A flush bolt with a C-, U-, or L-shaped cross-section that wraps around or overlaps the edge of a door seal, ensuring the seal sits flush within the bolt's channel without interference, maintaining sealing integrity.

Benefits of technology

The flush bolt design provides a continuous barrier against air, sound, and smoke flow by eliminating gaps between the seal and bolt, enhancing security and aesthetic appeal while maintaining seal functionality.

✦ Generated by Eureka AI based on patent content.

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Abstract

There is provided a flush bolt comprising a first section and a second section, wherein one or both of the first section and second section comprise a substantially planar surface such that the substantially planar surface is arranged to extend around an edge of a seal in use. There is also provided a corresponding socket for receiving a flush bolt comprising a substantially planar surface.
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