Patent · US Expired

Cutting head for drift advancing machines

US4568127A · kind A · utility

5Cited by

2References

5Claims

0Family size

Assignee

Voest-Alpine · AT

Inventors

Gottfried Traumuller · Zeltweg, AT
Wilfried Maier · Eppingen, DE
Franz Schoffmann · Leoben, AT
Herwig Wrulich · Zeltweg, AT

Key dates

Filing date	Aug 25, 1983
Grant date	Feb 4, 1986
Priority date	—
Expiry date	Aug 25, 2003

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C35/23
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The cutting head (1) has passages (14, 16; 22) extending through the cutting head in axial direction thereof and being connected with the axial water supply bore (8) by radial bores (9). Radial bores leading to the outlet nozzles open into the passages (14, 16; 22) extending through the cutting head in axial direction thereof. The passages (14, 16; 22) extending through the cutting head in axial direction thereof can be closed at at least one side by means of detachable closure members (15), so that these passages (14, 16; 22) extending through the cutting head in axial direction thereof can, after having removed the closure members, be cleaned by means of a cleaning-rod.

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