Patent · US Expired

Profiled seal for tunnel segments

US5074711A · kind A · utility

8Cited by

4References

15Claims

0Family size

Assignee

Phoenix, LLC · DE

Inventors

Siegfried Glang · Hamburg, DE
Werner Grabe · Winsen, DE

Key dates

Filing date	Aug 17, 1990
Grant date	Dec 24, 1991
Priority date	—
Expiry date	Aug 17, 2010

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D11/385
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A profiled seal for use in tunnel segments and comprising cut out grooves along the bottom of the seal; channels along the upper part of the seal; lateral faces and spreading feet for the seal; plus a bridge system having an outer bridge and an inner bridge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.