Electric lamp bulb package and sleeve component therefrom
US4058211A · kind A · utility
13Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Aug 10, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/38
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
One or more lamp bulbs are protectively packaged by inserting them into an open-ended wrapper of single-faced corrugated paperboard and slip-fitting the resulting lamp pack into an open-ended boxboard sleeve that overlies and closes the open ends of the wrapper. The sleeve has oppositely disposed corner portions with inwardly bowed flexible junctures of such curvature that they exert a wedging force on the associated end edges of the inserted wrapper. The resulting clamping action frictionally locks the wrapper and the contained lamp bulbs within the boxboard sleeve despite the smooth surfaces of the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.