Fluid handling – Systems – Main line as motive fluid for follower-type feeder
Patent
1990-01-16
1990-11-20
Rivell, John
Fluid handling
Systems
Main line as motive fluid for follower-type feeder
E03B 707
Patent
active
049711059
ABSTRACT:
A hydraulic fluid injection apparatus is described that has a container that has a chamber with a first, second and return means section. There are two pistons with a seal means on each piston and the two pistons are connected by a rod. Input fluid pressure by a pressurized first fluid, such as water, on the first piston causes the second piston to move and pressurize a second fluid, such as an insecticide, out of the second section and into a mixing line, through a calibrated metering means and into an output fluid line to be joined by the first fluid arriving from the first section of the chamber. There is a mixing means in the output fluid line to mix the two fluids more thoroughly. There is a return means in the return means section of the chamber that returns the second piston to a lower position when the pressure on the first piston is less than the return force of the return means and allows the second section to be refilled as necessary. A number of one-way valves are supplied to allow fluid movement in only the desired direction. A stop means in the first section limits the travel of the first piston.
REFERENCES:
patent: 549479 (1895-11-01), Hall
patent: 1297622 (1919-03-01), Whittaker
patent: 1736803 (1929-11-01), Shields
patent: 2323618 (1940-07-01), Ottoson
patent: 3200840 (1965-08-01), Watts
patent: 3410305 (1968-11-01), Hicks, Jr.
patent: 4047541 (1977-09-01), Mercier
patent: 4682734 (1987-07-01), Proctor et al.
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