Patent · US Expired

Mineral mining installation

US4402634A · kind A · utility

2Cited by

6References

20Claims

0Family size

Assignee

Gewerkschaft Eisenhutte Westfalia GmbH · DE

Inventors

Gerhard Merten · L Atkinson Lane, DE
Horst Schlusener · Werne, DE
Kunibert Becker · Werl, DE
Herbert Beyer · Werne, DE

Key dates

Filing date	Jun 4, 1981
Grant date	Sep 6, 1983
Priority date	—
Expiry date	Jun 4, 2001

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21F13/10
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A mineral mining installation comprises a longwall conveyor, and a plurality of roof support units positioned side-by-side along the goaf side of the conveyor. The roof support units are positioned to define an access area between the conveyor and the roof support units. A plurality of hydraulic bracing rams act on the conveyor to brace the conveyor longitudinally. Each of the bracing rams is pivotally attached to a floor sill of a respective roof support unit. The hydraulic bracing rams are positioned at the goaf-side edge portion of the access area. The bracing forces are transmitted from the bracing rams to the conveyor via respective transverse arms attached to the bracing rams and to the conveyor.

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