Widening apparatus

US6244783A · kind A · utility

Assignee

• Tracto-Technik Paul Schmidt Spezialmaschinen · DE

Inventors

• Franz-Josef Puttmann · Lennestadt, DE
• Gerhard Balve · Lennestadt, DE

Key dates

• Filing date: Apr 19, 1999
• Grant date: Jun 12, 2001
• Expiry date: Apr 19, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L55/1658
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An apparatus for widening microtunnels and/or for the destruction and replacement of ground-laid pipework and for the laying of new pipework possesses a tool which displaces the earth and/or destroys and/or displaces pipework laid in the earth, having a housing which is provided with an axial linkage seating, for example a housing passage for a linkage and with a linear drive which moves the tool, for example, on the linkage automatically from a launch pit to an arrival pit and simultaneously lays a follow-up pipe or a follow-up cable in the earth.