Film spool with separate keeper
US4974788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Nov 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2301/414225
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spool for a strip of film or other web material has a core and an elongate slot through the core for receiving an end portion of the strip. A separate keeper for retaining the end portion in the slot includes a first portion that is snapped into the slot and holds the end portion firmly against one surface of the slot. The keeper has a second portion that is engageable with the strip outside the slot for holding the strip against an arcuate portion of the core. The keeper can be latched in either a first position in which the keeper is partially inserted into the slot during insertion of the end portion into the slot, or a second position in which the keeper is fully inserted into the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.