James G Parke

US Patent:

42080134, Jun 17, 1980

Filed:

Mar 7, 1977

Appl. No.:

5/774785

Inventors:

Bobby W. Coleman - San Antonio TX
John R. Frassanito - San Antonio TX
Richard O. Norman - San Antonio TX
James G. Parke - San Antonio TX

Assignee:

Micro-Gen Equipment Corporation - San Antonio TX

International Classification:

B05B 730

US Classification:

239351

Abstract:

A portable chemical spraying apparatus has an electric motor/compressor mounted inside of two halves of a lightweight housing. A compressed air output of the motor/compressor connects directly to a compression chamber. Compressed air inside of the compression chamber moves through the venturi of a nozzle into a mixing chamber. The mixing chamber opens to atmosphere through a vortex of compressed air received via spiral passages connecting to the compression chamber. Chemicals may be drawn into the mixing chamber through a needle, which may perforate a seal of a disposable chemical container at the time the chemical container is connected to the portable spraying apparatus. Simultaneously, the needle seals with a metered conduit which extends to the inside bottom of the chemical container.

US Patent:

41824911, Jan 8, 1980

Filed:

Mar 25, 1977

Appl. No.:

5/781530

Inventors:

James G. Parke - San Antonio TX
Richard O. Norman - San Antonio TX
Edward D. Colle - San Antonio TX
Edsel M. Fussell - San Antonio TX

Assignee:

Micro-Gen Equipment Corp. - San Antonio TX

International Classification:

B05B 726

US Classification:

239 11

Abstract:

A control device for metering fluid flow from a remote location is shown in conjunction with an insecticide spraying apparatus. The spraying apparatus includes a compressed air source feeding pressurized air to a nozzle for mixing with a liquid and discharge to atmosphere. A metering pump feeds the liquid to the nozzle in response to a digitized input signal received from a remote control device. A digitized feedback signal including a number of pulses per unit time from the metering pump to the remote control device indicates the rate of flow of the liquid through the metering pump. The remote control device compares the digitized feedback signal with a control voltage to generate the digitized input signal which is a pulse-width modulated signal, which digitized input signal maintains the flow rate of the liquid. A pressure switch connected to the nozzle insures a predetermined pressure therein before the metering pump will begin feeding liquid to the nozzle.