Patent · US Expired

Method and apparatus for positioning diaphragms in vertical slotted walls which are supported by a suspension

US4690590A · kind A · utility

3Cited by

6References

22Claims

0Family size

Assignee

Ed. Zublin Aktiengesellschaft · DE

Inventors

Manfred Nussbaumer · Leonberg, DE
Eberhard Glaser · Esslingen am Neckar, DE
Eberhard Beitinger · Stuttgart, DE

Key dates

Filing date	Aug 22, 1985
Grant date	Sep 1, 1987
Priority date	—
Expiry date	Aug 22, 2005

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE02D19/18
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

To reduce the shearing resistance at the surfaces of the diaphragm, and to decrease the buoyancy force, both of which greatly hamper the positioning of diaphragms or thin sheets in slotted wall suspensions, air bubbles are introduced at the bottom end of the diaphragm during the positioning process. These air bubbles ascend along the vertical surfaces of the diaphragm.

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