Machine for the pneumatic spreading of granular material
US4020991A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1976 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Mar 10, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C15/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A machine for broadcasting material over the ground having booms (15) which carry flexible distributing conduits (10), and extend laterally outwardly from the centrally disposed hopper (2) for broadcasting of the material, and are folded up, about horizontal pivot axes (19), against the hopper for transport of the machine over e.g., roads. Each boom includes an inner boom member (17) and an outer boom member (18) which are pivotally connected at an axis (22) so that the outer boom member can be folded into alignment with the inner boom member in the direction of travel (16). By this construction the width required for the booms when in the transport condition is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.