Patent · US Expired

Walking mine support

US4183700A · kind A · utility

3Cited by

1References

8Claims

0Family size

Assignee

Bochumer Eisenhütte Heintzmann GmbH & Co. KG · DE

Inventors

Gerhard von Klinggraff · Neukirchen-Vluyn, DE
Karlheinz Bohnes · Bochum, DE
Heinz Kunzer · Herne, DE
Peter Marr · Bochum, DE

Key dates

Filing date	Oct 4, 1978
Grant date	Jan 15, 1980
Priority date	—
Expiry date	Oct 4, 1998

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D23/0091
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A walking mine support includes a roadway support unit and a face-gallery support unit laterally of the same. The two units are linked by one or more four-pivot couplings whose members can tilt both lengthwise and transversely of the elongation of the roadway and permit walking movements of the units with reference to one another without interfering with proper support of either the roadway or the face-gallery.

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