Max W Brown

US Patent:

46779213, Jul 7, 1987

Filed:

Feb 10, 1986

Appl. No.:

6/828222

Inventors:

Max A. Brown - Plantation FL

International Classification:

A01C 2302

US Classification:

111 6

Abstract:

A rolling point agricultural spiked wheel injector system for injecting a fluid as a liquid chemical or gas into the ground. The system includes a rotatable injector wheel having a plurality of outwardly directed injector spikes attached to the periphery of the wheel, the spokes being so constructed to easily penetrate the ground for injection of fluid therein. The injector wheel includes a unique rotary valve mechanism of simplistic design selectively operable for permitting fluid to flow when the spike is in the ground penetrating position and blocking the flow of fluid when the spike is out of the ground. The valve sealing system allows free rotation of the wheel with greater sealing pressure over a smaller contact area. The improved valve is a self-cleaning device for movement of abrasive particles in the liquid chemical material around the bearing face of the valve that engages the rotating ribbon surface of the ring with the plurality of openings. The abrasive material destroys the positive seal in the prior devices.