Manure spreader
US5265809A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/145
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A manure spreader includes a generally V-shaped hollow body, or hopper, disposed on a movable frame and having a side discharge rotary expeller for spreading the manure over a wide area as the spreader is displaced. A conveyor auger within a lower portion of the V-shaped body moves the manure toward a forward discharge aperture disposed adjacent the expeller for discharge. A pair of hydraulic cylinders move the rotating auger from a lower portion of the V-shaped body upward along an inclined body wall, maintaining an essentially fixed, close spacing between the conveyor auger and the expeller and also maintaining a working relationship between the conveyor auger and the body wall. The upward displacement of the conveyor auger loosens and breaks bridge formations of the manure above the conveyor auger, while continuing to convey the material in all positions of elevation. The conveyor auger is displaced along a radial arc preferably centered on the expeller axis of rotation to form a wide, open volume within the tank to allow the chunky, hardened manure to drop down into the path of the conveyor auger for transport and discharge. A suitable drive mechanism drives the auger conveyor …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.