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US 4,515,313 AGranted
Air knife apparatus
AssigneeMarshall and Williams Company
InventorKenneth M. Cavanagh
Life of this patent
Estimating the term…
Abstract
An air knife is illustrated having an adjustable orifice which includes a flat plate forming a baffle on one side while on the other side a flexible plate is secured along one edge to the circular plenum offering a free edge portion which may be drawn inwardly with respect to the flat plate to form an adjustable opposite side of the orifice.
Claims2
An air knife including an elongated plenum having a longitudinal opening comprising:
- a longitudinal support on one side of said opening;
- a longitudinal plate forming a flexible baffle extending on said one side of said opening and being fixed across said support adjacent said opening forming one side of a longitudinal orifice opposite said opening;
- a longitudinal flexible blade fixed to said plenum, along the other side of said opening presenting a free edge portion opposite said baffle;
- threaded means spaced along said opening extending between said blade and said support for drawing the free edge portion of said blade toward and away from said baffle varying the size of said orifice permitting adjustment therealong;
- and
- said baffle and said blade presenting a converging substantially streamlined flow path.
3 more elements
Dependencies are inferred from the claim text.