US 4,427,074 A · Spraying apparatus

Abstract

An impeller is connected to a liquid-powered motor to be driven thereby. The impeller is of a type capable of moving a large volume of air of the order of as much as several thousand cubic meters per minute, which is ten or more times the volume of liquid used to power the motor. Some or all of the liquid applied to the motor to be transformed into mechanical energy is carried by a conduit to a point where it can suitably enter the air stream provided by the impeller. The conduit can carry the liquid to a point between the motor and the impeller so as to be picked up along with air and included in the stream forcibly projected from the impeller. Alternatively, the conduit can be routed around the impeller to discharge the liquid into the already formed air stream. The conduit for the liquid can be arranged to receive only liquid that has been used to supply power to the motor, or it can be provided with an additional inlet to receive one or more additional chemicals to improve the nature of the aerosol, which is the combined air and finely divided water particles propelled by the impeller.

Claims29

Dependent claims

Spraying apparatus comprising:

a liquid-powered, positive displacement reciprocating motor for producing rotary motion, said motor having power transfer means for converting a potential energy of the pressurized liquid to a mechanical energy;
impeller means connected to said motor to be rotated thereby for generating a stream of moving air;
intake port means for receiving pressurized liquid having energy to power said motor and supplying said pressurized liquid to said power transfer means;
low-pressure liquid exit means connected to said power transfer means for receiving at least a portion of a low-pressure liquid which is expelled from said power transfer means after said energy conversion;
and
conduit means having
an inlet means connected to receive at least a portion of the liquid received to power said motor, and
a shell surrounding said power transfer means and spaced therefrom to define a generally annular channel intermediate of said power transfer means and said shell for delivering to the stream of air at least a portion of the liquid entering said intake port means, the portion of the liquid delivered to the stream of air being entrained in the stream and moved by the stream.

5 more elements

Dependencies are inferred from the claim text.

Spraying apparatus

Life of this patent

Spraying apparatus

Life of this patent

Abstract

Claims29