Cassette and anti-clockspringing method for a roll of web...

Details Cassette and anti-clockspringing method for a roll of web... Cassette and anti-clockspringing method for a roll of web...

G - Physics

03

B

G03B 17/26 (2006.01) B65H 16/00 (2006.01) G03B 27/58 (2006.01) G03C 3/00 (2006.01)

Patent

CA 2108320

ABSTRACT OF THE DISCLOSURE A light-tight cassette 10 has an anti- clockspringing method for preventing clockspringing of a wound roll of web material 14 within the cassette 10 during storage and shipment. The web material 14 is mounted on a tubular web core 12 arranged to rotate about an axis within the cassette 10. Cassette 10 has at least one end cap 22 having a tubularly shaped hub member 34. Hub member 34 has a diametrically extending bar 38 for receiving an anti-clockspring means comprising a fork 44 having a central member 52 comprising spaced anti-rotation arms 42, 44 for receiving bar 38. Fork 44, moreover, comprises at least one flexible latch finger 46 that latchingly engages the end cap 22 and a flexible lock finger 48 that is wedged between and into an annular gap formed when the hub member 20 is inserted into the web core 12 for locking the web core 12 against rotation.

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