DE2452247A1
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Tunnel or heading liner system - concrete pump pipeline ends in rotary pipe and telescopic tube
Assignee: Universale Hoch & Tiefbau
•
Filing: 1974-11-04
•
Granted: —
•
Expires: 1994-11-04
Abstract
Abstract Tunnel or mine heading liner system pumps concrete through holes in shuttering from a central supply point through a system of pipelines. The end of the pipeline can adjust lengthways and consists of a horizontal pipe capable of turning round an axis parallel to that of the shuttering, and a telescopic tube adjoining this pipe. Hydraulic motors should be employed to rotate the pipe and extend or contract the tube. Pipe and tube connected to this should be carried on a car, trolley etc. travelling in the tunnel or heading. The axis of the tube should be at right angles to that of the rotary pipe.
Inventors
- 👤 Gottfried Ing Mayr
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/04; E21D11/10; E21D11/105; E04; E04G; E04G21/00; E04G21/02; E04G21/04; E04G21/0418; E04G21/0472
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.