Grain door and method of installation
US3980124A · kind A · utility
0Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1974 |
| Grant date | Sep 14, 1976 |
| Priority date | — |
| Expiry date | Jun 10, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D19/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A grain door for installation across the doorway of a boxcar wherein a generally rectangular relatively stiff panel equipped with a plurality of horizontal straps is equipped with diagonal fold lines extending from the intersection of the side flap and floor flap fold lines to permit folding the side flaps and the floor flaps ends into overlying relation with the remainder of said panel to facilitate anchoring the straps to the doorway posts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.