Positive connection between a pipe and a ring inserted into the pipe

US6406215B1 · kind B1 · utility

Assignee

• Tracto-Technik Paul Schmidt Spezialmaschinen · DE

Inventors

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

Key dates

• Filing date: Jun 30, 1999
• Grant date: Jun 18, 2002
• Expiry date: Jun 30, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/7098
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A positive connection between a pipe and a ring inserted into the pipe, in particular between the housing of a ram boring device and a stop ring inserted into the housing, wherein the inside wall of the pipe has a convex groove consisting of a section of a surface of a sphere and the ring has a corresponding convex outer surface with the same radius, the inside wall of the pipe possessing at least one axial groove permitting insertion into the pipe or the outer surface of the ring possessing at least one flattened portion permitting insertion into the pipe, or the ring being axially divided into two or more preferably unequal segments.