US2026022521A1PendingUtilityA1

System and method for waterproofing railway structures

49
Assignee: FREEDOM CHEMICAL CORPPriority: Jul 18, 2024Filed: Feb 28, 2025Published: Jan 22, 2026
Est. expiryJul 18, 2044(~18 yrs left)· nominal 20-yr term from priority
Inventors:HAYDU JONATHAN WOLFFFLANAGAN KYLE DAVID
E01B 19/00
49
PatentIndex Score
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Claims

Abstract

A waterproofing structure for a railway structure includes a waterproof membrane that is applied over a bed of the railway structure, and a membrane protection layer that is applied over the waterproof membrane. The membrane protection layer is an elastomeric foam that excludes a filler material. The membrane protection layer can be a polyurea foam applied as a single layer.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A waterproofing structure for a railway structure, comprising:
 a waterproof membrane configured to be applied over a bed of the railway structure; and   a membrane protection layer configured to be applied over the waterproof membrane, the membrane protection layer excluding a filler material.

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