Patent · US Expired

Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine

US7416369B2 · kind B2 · utility

1Cited by

8References

10Claims

0Family size

Assignee

TIEFENBACH CONTROL SYSTEMS GMBH · DE

Inventors

Ursula Kellermann · Erlangen, DE
Christian Kellermann · Nuremberg, DE
Holger Kellermann · Erlangen, DE

Key dates

Filing date	Dec 11, 2003
Grant date	Aug 26, 2008
Priority date	—
Expiry date	Dec 11, 2023

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D23/148
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A longwall support control for controlling the movements of longwall support units in the longwall of a mine that includes a central control system and a plurality of control units, of which a separate control unit (mining shield control device) is locally and operationally associated to each longwall support unit. Each mining shield control device comprises a switching element, which permits separating the bus line or lines in the mining shield control device. The mining control devices may also include signal amplifiers. An identical second bus line (parallel bus) permits retransmitting to the adjacent mining shield control device, incoming signals that do not store a code word assigned to the respectively addressed mining shield control device.

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