Hand pressure operated seed planter
US4760807A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Aug 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hand pressure operated seed planter includes an elongated vertically disposed tubular body for storing seeds with a cup-shaped telescoping bottom cap having seed dispensing openings. A rotatably mounted closure plate is mounted within the bottom cap. The bottom cap is normally forced downwardly by a spring. A spiral plate that is adapted to function as a helical cam member is operatively associated between the storage tube and the closure plate to rotate the closure plate to an open position allowing seeds to fall through the dispensing hole when enough downward pressure is applied to the planter to force the bottom cap upwardly upon the tubular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.