Stone trap seal
US4288969A · kind A · utility
10Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F12/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a combine used for harvesting and threshing crop material from a field and equipped with a system for ejecting stones and other foreign objects from an infeed housing through a trapdoor there is provided an improved seal for the stone trapdoor and the opposing sidewalls of the infeed housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.