Patent ID: 9045306
Filing Date: 2015-06-02
Classification: B65H,G01B

Abstract:
1. A web stabilizer for stabilizing a moving web, the stabilizer comprising: a nozzle body including a surface facing said web; a solid protrusion rotatably mounted in said nozzle body, said protrusion extending outwardly from said nozzle body surface and including a surface facing said web against which said moving web is arranged to be supported by said protrusion surface facing said web to measure a property of said moving web, rotation of said protrusion based on thickness of said web creating an offset between said protrusion surface facing said web and said nozzle body surface whose width depends on said web thickness, said offset determinative of said protrusion surface facing said web supporting said web without any vibration in said web; an air chamber positioned within said nozzle body, said air chamber including at least one air inlet port that directs compressed air from a source of compressed air into said air chamber; an annular opening located between said protrusion and said nozzle body surface and in fluid communication with said air chamber; and wherein said compressed air evacuates said air chamber through said annular opening to form an air bearing between said nozzle body surface and said moving web to suck said moving web towards said protrusion surface facing said web.