Identification button for paperboard container
US5826781A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S229/902
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An identification button construction for a paperboard clamshell carton or container. An edge of the carton lid, such as a horizontal edge, is provided with a plurality of cuts or scores which form the periphery of individual identification buttons. Such buttons are used to indicate the presence or absence of an ingredient or garnish for a hot food item such as a hamburger sandwich. The peripheral scores or lines of the button are cut about half way through the paperboard from the outer carton surface towards the carton interior. An elongated Z shaped cut, completely through the paperboard, bisects the button, at a right angle to the crown edge. The crown edge also bisects the button. While a diamond shape button is illustrated, round, oval, or other polygonal shapes may be employed. In use, a button is finger pressed toward the carton interior and assumes a depressed configuration, different from its original configuration, thus indicating the presence or absence of a garnish or other ingredient for the packaged food item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.