← Back to Patent Explorer
EP0385465A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of making a plastic sewer

Assignee: Pipelife Rohrsysteme GmbH
•
Filing: 1990-03-01
•
Granted: —
•
Expires: 2010-03-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from German Leitungsrohr aus Kunststoff, insbesondere für Abwässer, mit einem glatten Innenrohr und einem damit verbundenen gewellten Außenrohr, das über Muffenverbindungen (16, 17) mit einem gleichen oder einem anderen herkömmlichen, standardisierten Rohr verbindbar ist, wobei es ein koextrudiertes bzw. Verbundrohr ist, das in seinem einen Endbereich zu einer Rohrmuffe aufgeweitet ist. Line pipe made of plastic, in particular for waste water, with a smooth inner pipe and a corrugated outer pipe connected to it, which can be connected via sleeve connections (16, 17) to an identical or another conventional, standardized pipe, it being a coextruded or composite pipe which is widened into a pipe sleeve in its one end region.

Inventors

  • 👤 Heinz Hetzenecker
  • 👤 Wolfgang Meyer
  • 👤 Rolf Othold

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 12:08
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/0036; F16L25/0045; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/13; B29C48/25; B29C48/30; B29C48/303; B29C57/00; B29C57/02; F16L21/00; F16L21/02; F16L21/03; F16L9/00; F16L9/12; F16L9/127; F16L9/128; B29C2793/00; B29C2793/0081; B29L; B29L2016/00; B29L2023/00; B29L2023/18; B29L2023/186

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag