Spreader for particulate material
US4304344A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1979 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C15/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A spreader for distributing particulate material, particularly adapted for use as both a package for particulates and as a disposable spreader, comprises a dispenser, a pair of wheels mounted at opposite ends of the dispenser and a handle for advancing the spreader along a given path as the dispenser rotates. The dispenser has inner and outer chambers, the inner chamber adapted to act as a reservoir for particulate material, the outer chamber adapted to provide a circumferential passageway for particulate material passing from the inner chamber to the exterior of the spreader. A one-way valve arrangement in the passageway restricts particulate flow to the exterior when the dispenser is rotated in one direction but permits flow when rotated in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.