US 2006/0185567 A1 · Ground injection apparatus

Abstract

Ground injection, eg, aeration, apparatus adapted to be mounted on or drawn by a tractor and comprising one or more tines (12) reciprocated vertically by a crank (13) and crank shaft (13a) driven from a motor (14). Each tine (12) defines an internal passage (27) with outlet apertures (26). A compressor (24) connected to the passage (27) by a duct (23) having a poppet valve (21) actuated by a cam disc (19) on the crank shaft (13a) delivers a pulse of air to be injected into the ground through outlet apertures (26) at the position of maximum penetration of the ground by each tine (12). Instead of air, a liquid, a powder, or other gaseous substance may be injected into the ground where it is penetrated by each tine. The apparatus may include two or more rows of such tines and associated injection means.

Claims12

Dependent claims

A ground injection apparatus comprising at least one tine, the or each tine being hollow defining an internal passage therein with one or more outlet apertures, the injection means communicating with the passage of the or each tine such that the substance injected into the passage is discharged through the or each outlet aperture, drive means for causing the tine cyclically to penetrate the ground in use, and means to inject a substance into the ground where it is penetrated by the tine;

characterised in that the injection means comprises a supply of said substance, a duct to carry the substance from the supply to said internal passage, a flow control valve in said duct, an actuator for said flow control valve, a cam driven by said drive means and having at least one lobe adapted to engage and move said actuator at a predetermined point in the penetration cycle of said tine.

Dependencies are inferred from the claim text.

Ground injection apparatus

Life of this patent

Ground injection apparatus

Life of this patent

Abstract

Claims12