Accessory for air blast and device equipped with accessory

Details Accessory for air blast and device equipped with accessory Accessory for air blast and device equipped with accessory

2004-01-15

2008-03-04

Shaver, Kevin (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Rigid fluid confining distributor

Flat and tapered

C239S589000, C239S597000, C239S595000

Reexamination Certificate

active

07337991

ABSTRACT:
The invention relates to an accessory adapted to be mounted on the end of an outlet conduit (4) of an air blast device (1). The accessory is in the form of a tube having an inlet, an outlet and a central passage therethrough, the axial passage or tube being mounted coaxially to the axis of the outlet conduit. The tube has a cross-sectional area that first decreases in the direction (F) in which the air is discharged from the air blast device and a cross-sectional area that then increases in the direction F, thus forming a convergent segment (A) followed by a divergent segment (B). The air blast device is of the type having an evacuation control valve disposed between its inlet and outlet for controlling air flow contained in a chamber or reservoir.

REFERENCES:
patent: 5050805 (1991-09-01), Lloyd et al.
patent: 6830230 (2004-12-01), Simoens
patent: 6845928 (2005-01-01), Felgen
patent: 6962317 (2005-11-01), Simoens

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