Passive web cutter
AssigneeEastman Kodak Company
InventorsDavid M. Orlicki, David B. Gropp, Thomas E. VanValkenburgh
Life of this patent
Estimating the term…
Abstract
A web cutter for use in high speed web transport machines has a roller with a hub, two flanges and three knives supported on the hub between the flanges. In one preferred embodiment the web rides on shoulders provided on the flanges. In another embodiment, the web rides on spacers that are held in position by spring biased conically tipped pilot pins. In a third embodiment the web rides on a slotted cylinder. In all embodiments the web is brought into engagement with one of the knives directly in response to excessive tension in the web.
Claims14
A passive cutter for severing a web under tension in response to the tension in the web reaching a predetermined threshold, the cutter comprising:
- (a) a rotatable hub;
- (b) means mounting the hub for rotation about a fixed axis;
- (c) at least one knife for cutting the web, said knife being supported by the hub for rotation with the hub, the knife projecting from said hub in a radial direction relative to the axis;
- and
- (d) means for supporting the web for travel along an arcuate path about the axis and spaced from said knife when tension in the web is below said predetermined threshold, the suporting means enabling the web to move radially inwardly into contact with the knife to effect severing of the web when tension in the web reaches the predetermined threshold.
Dependencies are inferred from the claim text.