Coulter beam mounting assembly including articulate joint means
US4155316A · kind A · utility
1Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1978 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Mar 16, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S111/927
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Seed drill has a row of coulters which are raised and lowered by a beam extending along and above the row of coulters and connected to the coulters by spring assemblies. The beam is raised and lowered relative to the frame of the drill by two rams to actuate the coulters. The mounting of the beam comprises an articulated joint, such as a ball joint, which permits the ends of the beam to rise and fall independently of each other relative to the frame thereby permitting improved contour following by the coulters and avoiding excessive loads on the beam in the event of failure of one of the rams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.