Title:
【発明の名称】パイプと同一外径を有するパイプ連結部
Document Type and Number:
Japanese Patent JP2002530613
Kind Code:
A
Abstract:
A plastic pipe has a multiple layer wall construction including major and minor wall portions. The major wall portions are formed with first corrugations and are separated from one another by the minor wall portions which are formed with second corrugations and a bowed wall part which is of the same diameter as the first corrugations. The second corrugations are smaller in diameter than both the first corrugations and the bowed wall pipe. The wall construction is cut at the bowed wall part to produce two pipe sections which couple with one another. One of those pipe sections has an open ended bell converted from the bowed wall pipe and the other pipe section has a male spigot formed by the second corrugations of the wall construction.
Inventors:
Rupke, Manfred, A..
Rupke, Stefan, A.
Rupke, Stefan, A.
Application Number:
JP2000584234A
Publication Date:
September 17, 2002
Filing Date:
October 07, 1999
Export Citation:
Assignee:
Rupke, Manfred A., A.
Rupke, Stefan, A.
Rupke, Stefan, A.
International Classes:
F16L25/00; F16L47/08; F24F13/02; F16L9/06; (IPC1-7): F16L9/06; F24F13/02
Domestic Patent References:
| JPH06503148A | 1994-04-07 | |||
| JPH0337494A | 1991-02-18 |
Foreign References:
| EP0385465A2 | 1990-09-05 |
Attorney, Agent or Firm:
Masao Okabe (11 others)