Patent · US Expired

Movable cutting machine

US4784439A · kind A · utility

13Cited by

8References

8Claims

0Family size

Assignee

Voest-Alpine · AT

Inventors

Herwig Wrulich · Zeltweg, AT
Alfred Zitz · Zeltweg, AT
Erich Brandl · Zeltweg, AT

Key dates

Filing date	Oct 25, 1982
Grant date	Nov 15, 1988
Priority date	—
Expiry date	Oct 25, 2002

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D9/1026
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A movable cutting machine is subdivided into a front portion (1) and a rear portion (2) of the cutting machine, which portions are swingable around an approximately vertical pivotal axis (10) and are secured against a relative displacement in direction of this pivotal axis (10) by means of two joints (11, 12). The front portion (1) of the cutting machine has a caterpillar chassis (3) and carries a swivelling means (5) comprising as the cutting means a cutting arm (6) and two cutting heads (7). The rear portion (2) of the cutting machine has, as a support means against ground, equally a caterpillar chassis (4) and carries auxiliary equipment and/or a section of a conveying trough (13) equipped with a chain conveyer.

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