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US 4,274,210 AGranted
Gas nozzle for use in treating material webs
AssigneeValmet Corporation
InventorCharles Stengard
Life of this patent
Estimating the term…
Abstract
A nozzle for use in web treatment apparatus includes a carrying surface extending substantially parallel to the web and guide members defining an annular slit in a central region of the carrying surface, the guide members being formed such that gaseous medium flows radially through the slit in contiguity with the carrying surface and in a direction substantially parallel to the web.
Claims10
A nozzle for use in connection with web treatment apparatus whereby a gaseous medium is directed into contiguity with the web and wherein the web is supported without contact for treatment, comprising:
- a carrying surface extending substantially parallel to the web;
- guide members defining an annular slit located in a central region of said carrying surface so that said carrying surface surrounds said annular slit, said guide members being formed such that gaseous medium flowing therethrough will flow in substantial contiguity with said carrying surface in a substantially radial flow field relative to said annular slit and in a direction substantially parallel to the web;
- and means for directing the flow of gaseous medium into the nozzle, whereby the gaseous medium exits from said annular nozzle slit and flows in substantially contiguity with said carrying surface in a substantially radial flow field relative to said annular slit and in a direction substantially parallel to the web.
Dependencies are inferred from the claim text.