Soil treatment liquid injection device
US4178860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1978 |
| Grant date | Dec 18, 1979 |
| Priority date | — |
| Expiry date | Feb 1, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86501
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a device for introducing soil treatment liquids into the ground including a plurality of injection tines having a downwardly directed tip portion and connected to a rotatable crankshaft for reciprocative movement between a raised or non-injection position and an injection position wherein the tine portion is located beneath the ground surface. Flow of the treatment liquid to the tines is controlled by a rotary flow distribution valve which is connected directly to a chain drive sprocket mounted on the crankshaft and which is arranged to selectively supply the treatment liquid to the tines only when they are in the injection position. Each tine has a generally spherical tip made from a high aluminum ceramic material and an internal check valve located near the tip for minimizing the amount of residual liquid which can be shaken from the tine while it is in the non-injection position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.