Anti-clockspringing cassette for a roll of web material and method
US5314134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Nov 19, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1719
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.