Patent · US Expired

Pipe cleaning nozzle

US6394112B1 · kind B1 · utility

7Cited by

7References

4Claims

0Family size

Assignee

LUFTHANSA TECHNIK AG · DE

Inventors

Uwe Steinmetz · Wiesbaden, DE
Steffen Zang · Aschaffenburg, DE
Thomas Dittmar · Wiesbaden, DE
Karlheinz Steinmueller · Alzey, DE

Key dates

Filing date	Mar 23, 2000
Grant date	May 28, 2002
Priority date	—
Expiry date	Mar 23, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB08B9/0495
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The pipe cleaning nozzle is designed for the removal of deposits (23) in vacuum toilet pipes, particularly such pipes in aircraft, ships and trains. Since pipes (10) of this type are often installed to follow narrow radii of curvature, a need exists for a pipe cleaning nozzle which has a small axial dimension. The nozzle head (12) comprises a convex front wall (16) and a concave rear wall (17). The connector piece (13) is partially sunk in the concave rear wall (17). The high-pressure jets (22) are discharged from the nozzle orifices (21) to split off the deposits. The overall length of the nozzle head (12) inclusive of the connector piece (13) is not larger than the outer diameter of the nozzle head.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.