Process and apparatus for selectively gathering lightweight low density objects
US5088860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1991 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Mar 8, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L5/365
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum system is provided for selectively removing lightweight low density objects such as loose polystyrene packing material referred to as "peanuts" or "popcorn" from shipping cartons using a very low pressure vacuum which withdraws only the packing material and leaves the packed items in the carton. A low pressure vacuum is created in an elongated cylindrical conduit by directing air pressure from an annular plenum chamber into streams of air flowing through a series of spaced apart holes in a wall of the conduit toward the downstream end of the condudit. The conduit has an intake hose connected to its upstream end and a collection container at its downstream end. The packing material is drawn into the intake hose and through the conduit to the collection container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.