Web tension control system
OwnerEverett D. Krayenhageninventor
Life of this patent
Estimating the term…
Abstract
A web tension control system includes a stationary rod and a roller attached to the rod by a flexible coupling. A bearing is attached to the inner surface of the roller. The flexible coupling is attached, at one end, to the rod, and, at a second end to the inner portion of the bearing. The inner portion of the bearing is attached to the flexible coupling. One embodiment enables the roller to pivot about a central location where the bearing is attached to the inner surface of the roller. Another embodiment provides full pivotal freedom for the roller to angularly rotate about a central location through a limited range of angular displacement.
Claims15
A tension control system, comprising:
- a hollow cylindrical roller engagable with a moving web, said roller having a first end and an opposite second end:
- a shaft disposed within said roller, said shaft having a first end and a second end;
- a bearing having an inner diameter surface and an outer diameter surface, said beating being located between said first end of said roller and said second end of said roller, and said roller being rotatable on said beating relative to said shaft;
- pivot means for pivotally connecting said bearing to said shaft, said pivot means enabling said roller to pivot about an axis perpendicular to the axis of rotation of said roller in response to tension variations in the web, and said pivot means being attached to said inner diameter surface of said beating;
- and
- attachment means attached to said shaft for fixedly positioning said shaft in place.
A tension control system, comprising:
- a hollow cylindrical roller engagable with a moving web, said roller having a first end and a second end;
- a shaft disposed within said roller, said shaft having a first end and a second end;
- a bearing having an inner diameter surface and an outer diameter surface, said roller being attached to and rotatable on said bearing relative to said shaft;
- and
- a coupling pivotally connecting said bearing to said shaft, said coupling being attached to said inner diameter surface of said bearing, said coupling enabling said roller to pivot about an axis substantially perpendicular to the axis of rotation of said roller in response to tension variations in the web.
A tension control system, comprising:
- roller means for engaging a moving element, said roller means having a first end and a second end and having a hollow interior;
- a shaft disposed within said hollow interior of said roller means, said shaft having a first end and a second end;
- a bearing having an inner diameter surface and an outer diameter surface, the inner surface of said hollow cylindrical roller being attached to the outer diameter surface of said bearing;
- and
- a pivot device pivotally attaching said beating to said shaft, wherein said pivot device is attached to said inner diameter surface of said bearing, said pivot device enabling said roller means to pivot about an axis perpendicular to the axis of rotation of said roller means in response to tension variations in the web.
Dependencies are inferred from the claim text.