Attachment to improve transfer efficiency for a spraying device

摘要

An attachment to be employed with any spray device is disclosed. The attachment includes four vanes which are radially attached to an air hub with a central aperture, the central aperture adapted to receive the front portion of the spray device therethrough which when activated dispenses an atomizable substance in a pattern toward a workpiece. At the distal end of each of the four vanes, the vane is angled forward such that it generally points toward the workpiece. At the terminal end of each vane is a plurality of compressed air exit apertures. A compressed air source is attached to the air hub which guides the air through air conduits interiorly disposed within each of the vanes, where the compressed air is forced to exit each of the compressed air exit apertures forming an a second pattern which surrounds the atomizable substance pattern, and further boosts or pushes the atomizable substance onto the workpiece. The second pattern reduces overspray, bounce-back, and errant particles, and improves the transfer efficiency.

主权项

1. An attachment to be secured about a spray exit portion of a spray device, said attachment comprising;
a cylindrical aperture adapted to receive the spray exit portion of the spray device, the spray exit portion discharging an atomizable spray toward a workpiece, an air hub surrounding said cylindrical aperture, said air hub including an outer sidewall and an interior air passageway, said airhub including a compressed air input port which passes through said air hub said outer sidewall into said interior air passageway, a first vane, said first vane having a first length, a proximal portion and a distal portion, said first vane including a first interior air conduit beginning at the proximal portion and terminating at the distal portion, said distal portion angled generally toward the workpiece, a second vane, said second vane having a first length, a proximal portion and a distal portion, said second vane including a second interior air conduit beginning at the proximal portion and terminating at the distal portion, said distal portion angled generally toward the workpiece, a third vane, said third vane having a second length, a proximal portion and a distal portion, said third vane including a third interior air conduit beginning at the proximal portion and terminating at the distal portion, said distal portion angled generally toward the workpiece, a fourth vane, said fourth vane having a second length, a proximal portion and a distal portion, said fourth vane including a fourth interior air conduit beginning at the proximal portion and terminating at the distal portion, said distal portion angled generally toward the workpiece, said first vane said proximal portion passes through said air hub said outer sidewall into said interior air passageway, said second vane said proximal portion passes through said air hub said outer sidewall into said interior air passageway 180 degrees from where said first vane passes through said air hub outer sidewall, said third vane said proximal portion passes through said air hub said outer sidewall into said interior air passageway 90 degrees to the right of where said first and second vane passes through the said air hub outer sidewall, said fourth vane said proximal portion passes through said air hub said outer sidewall into said interior air passageway 90 degrees to the left of where said first and second vane passes through the said air hub outer sidewall, and 180 degrees from where said third vane passes through said outer sidewall, a compressed air source connected to said compressed air input port, whereby when said spray exit portion of the spray device discharges an atomizable spray toward the workpiece forming a first spray device spray pattern, whilst contemporaneously compressed air is forced into the air hub, into said first air conduit, said second air conduit, said third air conduit, and said fourth air conduit where the compressed air exits said distal portion of said first vane, said second vane, said third vane, said fourth vane, forming a second pattern, said second pattern exerting propulsion and containment to said first pattern, causing a greater amount of the atomizable spray to adhere to the workpiece while reducing overspray, bounce-back and errant particles.