Thread storage and dispensing system
US4073419A · kind A · utility
8Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Apr 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/252
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spool of thread, such as dental floss, is housed in a two-part shell or holder, preferably made of plastic. The floor on the bottom one of the shell parts includes a platform to provide a bearing surface for enabling rotation of the spool with a minimum of friction. The top of the upper shell part includes at least one finger which depends far enough to drag, with predetermined friction, against the top of the spool. This friction is sufficient to prevent a random unwinding of the spool and yet small enough to preclude any substantial impedance to the withdrawal of a desired amount of thread from the spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.