Reusable pneumatic dunnage device
US3987736A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Mar 17, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P7/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A reusable dunnage device which cushions goods from normal shocks during transit and withstands extreme impacts without damage. A pair of elongate boards are disposed adjacent an elongate, flexible, inflatable rubber tube on opposite sides thereof and this combination is placed vertically between parcels of goods. The boards and tube are held together and protected by an elongate canvass sack having a center pocket for receiving the tube and two side pockets for receiving the respective boards. The width of the tube when filled with air is greater than the width of the boards so that the device may be placed against the parcels of goods with the center, tubular portion of the sack abutting the parcels while the outer, board portions of the sack are disposed a distance away from the parcels. When the parcels move toward one another under normal shocks the tube will flex, thereby absorbing the shocks; but when an extreme impact is received the parcels will be stopped by the boards thereby preventing complete flattening of the tube and accompanying rupture. The device is particularly adapted to be placed between parcels of panel products shipped in railroad cars and thereafter pressur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.