EP 0040334 B1 19840912 - WATER NOZZLE WITH SELF-CLEANING MEANS
Title (en)
WATER NOZZLE WITH SELF-CLEANING MEANS
Publication
Application
Priority
DE 8013540 U 19800520
Abstract (en)
[origin: US4480789A] A water nozzle, particularly for dust suppressing for example at cutting rollers, has a housing with a central opening, a guiding sleeve received at least partially in the central opening of the housing and having an inner passage which is stepped in an axial direction, and a piston stepped in the axial direction and displaceable in the passage of the guiding sleeve to a position in which a narrow gap is formed between the piston and the guiding sleeve so as to prevent solid particles entrained in a flow of water from entering the nozzle. The piston is spring biased in a direction opposite to the direction of the flow of water, so that upon termination of the latter the piston dislodges the solid particles accumulated at the nozzle.
IPC 1-7
IPC 8 full level
B05B 1/30 (2006.01); B05B 1/34 (2006.01); B05B 15/02 (2006.01); B05B 15/14 (2018.01); B05B 15/522 (2018.01); E21C 35/187 (2006.01); E21C 35/22 (2006.01)
CPC (source: EP US)
B05B 1/3006 (2013.01 - EP US); B05B 1/3405 (2013.01 - EP US); B05B 15/14 (2018.01 - EP US); B05B 15/5225 (2018.01 - EP US); E21C 35/187 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0040334 A2 19811125; EP 0040334 A3 19820203; EP 0040334 B1 19840912; DE 3165951 D1 19841018; DE 8013540 U1 19801030; US 4480789 A 19841106
DOCDB simple family (application)
EP 81103181 A 19810428; DE 3165951 T 19810428; DE 8013540 U 19800520; US 50658583 A 19830622