Patent · US Expired

Mine roof-support truss

US6921232B2 · kind B2 · utility

2Cited by

6References

12Claims

0Family size

Assignee

Bochumer Eisenhütte Heintzmann GmbH & Co. KG · DE

Inventors

Lothar Domanski · Oberhausen, DE
Rudi Podjadtke · Herne, DE
Franz-Josef Wunderlich · Rheinberg, DE

Key dates

Filing date	Jul 20, 2004
Grant date	Jul 26, 2005
Priority date	—
Expiry date	Jul 20, 2024

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D11/107
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A truss has a pair of parallel and longitudinally extending chord rods and transverse rods interconnecting the chord rods. First and second slides each have a pair of tubes each fitting over a respective one of the chord rods and slidable longitudinally therealong and a cross member rigidly interconnecting the tubes and formed with a throughgoing hole through which passes a respective anchor member projecting from a tunnel or mine wall. The slides can be longitudinally fixed on the rods.

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