Spray containment and enclosure assembly

Details Spray containment and enclosure assembly Spray containment and enclosure assembly

1995-11-13

1997-11-18

Czaja, Donald E.

Coating apparatus

Projection or spray type

With hood or offtake for waste material

182142, 182 2, B05B 1500, B24C 900

Patent

active

056883234

ABSTRACT:
A spray containment enclosure assembly for use during the spraying operation on a work surface to prevent escape of airborne particles to the environment. The assembly includes a support arm, a personnel basket sized to receive a worker therein, a rigid enclosure attached to the personnel basket. The rigid enclosure is positioned with respect to the personnel basket such that when the worker is in the forward portion, at least a portion of an upper torso of the worker is within an interior area. The rigid enclosure has an open front side that is adapted to be positioned adjacent to the work surface to form an airway gap therebetween to allow air to flow into the interior area. A fan mounted to the rigid enclosure is adapted to create negative pressure in the interior area to draw air inwardly through the airway gap. An air filter is supported in the interior area and positioned to filter the air and removes particulates within the air from the air prior to the air being exhausted out of the interior area by the fan. A cross member extends across the interior area and has a recess that is covered by a yieldable skirt seal adapted to sealably engage an upper torso of the worker to block air from moving between the upper torso of the worker and the cross member. A flexible, air-impervious curtain is attached to the enclosure and positioned to substantially cover a rear wall opening and to sealably engage the rear portion of the worker's upper torso to block air flow from entering the interior area through the rear wall opening around the worker's upper torso. Air effectively enters only through the airway gap formed between the rigid enclosure and the work surface thereby preventing airborne particulates from exiting the interior area.

REFERENCES:
patent: 2998094 (1961-08-01), Fisher
patent: 4429764 (1984-02-01), Park
patent: 4649672 (1987-03-01), Thomann
patent: 4825598 (1989-05-01), Schlick
patent: 4854419 (1989-08-01), Lyras et al.
patent: 5011710 (1991-04-01), Harrison
patent: 5038527 (1991-08-01), Fastje
patent: 5065839 (1991-11-01), Napier
patent: 5067504 (1991-11-01), Coleman, III
patent: 5427199 (1995-06-01), Jorgensen et al.

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