Patent · US Expired

Drift advancing or mining machine

US4664449A · kind A · utility

13Cited by

9References

11Claims

0Family size

Assignee

Voest-Alpine · AT

Inventors

Franz Barnthaler · Vöcklabruck, AT
Ferdinand Bedenk · Zeltweg, AT
Otto Schetina · Zeltweg, AT
Alfred Zitz · Zeltweg, AT

Key dates

Filing date	Aug 29, 1985
Grant date	May 12, 1987
Priority date	—
Expiry date	Aug 29, 2005

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D9/1013
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drift advancing or a partial-cut mining machine (1) comprises a cutting arm (11) being swivellable in a height direction around an axis (10). The front end of the cutting arm (11) is equipped with guides (26) transversely extending relative to the longitudinal axis (38) of the cutting arm (11) and having shiftably supported thereon a carrier (27) for the cutting heads (28, 29). The cutting heads (28, 29) are rotatably supported on the carrier (27) for rotation around vertical axes (46). The distance (a) between the axes of rotation (46) is, as measured in a transverse direction relative to the longitudinal axis (38) of the cutting arm, at most equal to half the width (b) of the drift face.

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