Spraying apparatus employing a skirt structure
AssigneeA. C. Sprayers Inc.
InventorDerek Jones
Life of this patent
Estimating the term…
Abstract
In a new spraying apparatus the spray dispensers for liquid or finely divided spray material discharge into an enclosure contained within a flexible skirt attached to a sprayer boom. Air under pressure is injected into the skirt which supports the boom from the ground as it is moved over the area to be sprayed. The skirt is formed by one or more flexible air bags into which the air is injected and from which it escapes into the skirt enclosure. An annular air bag skirt structure is formed by folding inwards the edges of a strip of flexible material and fastening them to the strip in spaced parallel relation to form two parallel tubular passages. The open ends are then closed by means of respective open-sided envelopes slipped over the ends and laced thereto.
Claims5
A bag skirt construction for an air supported apparatus comprising two spaced parallel air-receiving passages surrounding an air-receiving enclosure open to the ground and constituting respective parts of at least one air bag, and an end closure member for closing the adjacent ends of the said spaced parallel passages and also the respective end of the said enclosure zone, the closure member comprising an envelope disposed over the adjacent ends of the said spaced parallel passages and overlapping said ends, wherein the air received in the passages expands the respective portions of the passages within the envelope into sealing engagement with the envelope.
Dependencies are inferred from the claim text.