Patent ID: 7360721
Filing Date: 2008-04-22
Classification: B05B,B08B

Abstract:
1. Nozzle assembly for a high-pressure cleaning device, comprising: a low-pressure nozzle, a high-pressure nozzle arranged within the low pressure nozzle, a spray lance having a first end adapted for connection to a supply line and a second end bearing a sealing pipe connection insertable into the high-pressure nozzle, a bypass bypassing the high-pressure nozzle and leading to the low-pressure nozzle, a pot-shaped housing arranged on the second end of the spray lance and surrounding the sealing pipe connection, and displacement elements displaceable to alter the distance between the sealing pipe connection and the high-pressure nozzle to provide a high-pressure position in which the sealing pipe connection abuts sealingly on the high-pressure nozzle and interrupts a connection between the spray lance and the bypass and a low-pressure position in which the sealing pipe connection is at a distance from the high-pressure nozzle and establishes the connection between the spray lance and the bypass, the low-pressure nozzle and the high-pressure nozzle being mounted in said pot-shaped housing so as to be freely displaceable and sealed in relation to an inner wall of the pot-shaped housing, wherein; the displacement elements displace the low-pressure nozzle and the high-pressure nozzle in the housing in a longitudinal direction of the housing towards the sealing pipe connection in the high-pressure position and away from the sealing pipe connection in the low-pressure position, the high-pressure nozzle is pushable into an interior of the low-pressure nozzle from a rear side, stop elements are provided, said stop elements limiting a depth of insertion of the high-pressure nozzle into the low-pressure nozzle, and the bypass comprises longitudinal channels formed between an inner wall of the interior of the low-pressure nozzle an outer wall of the inserted high-pressure nozzle.