Apparatus and method for aerating and/or introducing particulate matter into a ground surface
US5370069A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Mar 2, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C23/028
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus and a method for introducing a particulate matter along with a driving liquid, such as water, into a ground surface. The apparatus is also highly effective for perforating and thereby aerating the ground surface. The particulate matter may preferably adopt the form of a powder like substance often referred to as "polymer" and which is injected into the ground for purposes of acting as a plant food or a plant additive in various agricultural operations. The apparatus utilizes an injector device for mixing the polymer or other particulate matter with the driving liquid, such as water, at a point in close proximity to the ground surface so that there is no pre-mixing of the particulate matter and the driving liquid. The driving liquid is pumped to the injector at a high pressure and introduced into a high pressure chamber of the injector. The liquid is then forced through a very small diameter nipple opening leading to a low-pressure chamber. This will, in turn, cause a venturi effect in the low pressure chamber and which also causes a sucking or introduction of the particulate matter into the low pressure chamber where the particulate matter and the liquid are mixed and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.