Drop-bottom box
US4423831A · kind A · utility
10Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1049
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drop-bottom box (11) which has a bottom wall (18) hingedly connected thereto and which is hooked up in closed position by hooks (30) engaging studs secured to the bottom wall, and which hooks (30) are biased to closed position but which may be released from locking position by a lever (32) biased to a closing position by springs (33).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.