Discriminating web material dispenser
US8544785B2 · kind B2 · utility
18Cited by
44References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Mar 13, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47K2010/3681
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An automatic product dispenser determines if the roll loaded into the dispenser is approved for use with the dispenser. The core of a roll contains a feature that alters an electromagnetic field created proximate the core. The alteration of the electromagnetic field may then be used to determine if the core, and thus the roll, is usable with the dispenser. The feature is designed such that it is damaged once product is completely dispensed from the roll thereby preventing replenishment and reuse of a spent roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.