Flip-lock reclosable carton
US4289240A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Oct 1, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/5435
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A reclosable carton having a receptacle portion and a cover portion which is adapted to hingedly close and lock onto the receptacle portion. A reinforcing flap is hingedly connected across the top front edge of the receptacle portion of the carton to resist bowing of a partially emptied carton. An extension flap is adhered to the front panel of the carton and splits away from a depending front flap of the cover as the cover of the carton is initially opened by a user. A locking tab is formed by the detachment of a portion of the extension flap which remains hingedly connected to the front flap. The locking tab engages the edges of the void from which it was removed to provide a locking action on reclosure. The locking tab easily disengages with a toggle action upon reopening of the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.