Patent · US Active

Heading machine with cusp cutter

US11299987B2 · kind B2 · utility

0Cited by

9References

17Claims

0Family size

Assignee

Sandvik Mining and Construction Oy · FI

Inventors

Ralf Grief · Zeltweg, AT
Stefan Hasler · Zweikirchen, AT
Karl Irregger · Vöcklabruck, AT
Stefan Steiner · Sammamish, US
Gerhard Weinberger · Zeltweg, AT

Key dates

Filing date	Jan 31, 2018
Grant date	Apr 12, 2022
Priority date	—
Expiry date	Jan 31, 2038

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C31/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A heading machine includes first and second rotating cutting heads each having an axis of rotation extending substantially in a longitudinal direction of the machine, a first cutting roller having an axis of rotation extending substantially horizontal and transverse to the longitudinal direction of the machine, and a further cutting device supported on the cutting frame and arranged to cut off the cusps of unmined material left on side wall. The machine further includes a side stabilizer, and can cut a rectangular profile without leaving cusps left on the side wall.

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