Fluid sprinkling – spraying – and diffusing – Processes – Including electrostatic charging
Patent
1995-04-20
1997-11-11
Morris, Lesley D.
Fluid sprinkling, spraying, and diffusing
Processes
Including electrostatic charging
2396901, 239698, 239705, 239707, 239296, 239300, 2394165, 239522, B05B 5043
Patent
active
056854820
ABSTRACT:
Induction charging apparatus for HVLP spray guns and air-assisted airless spray guns includes an air cap having a central orifice for receiving a spray gun nozzle. The cap includes one or more charging electrodes adjacent the orifice and carrying a voltage sufficiently large to induce on the spray droplets charges of a polarity opposite to that on the electrodes. A rotatable electrical connector enables the cap to rotate 360.degree. while maintaining electrical connections between the electrodes and a power supply. The spray gun nozzle is an airless nozzle receiving liquid at a pressure of about 1,000 psi and having a spray tip from which liquid is sprayed along a flow path coaxial with the electrodes. Air at less than about 10 psi is directed along the flow path to assist in the atomization of the liquid from the airless nozzle.
REFERENCES:
patent: 2302185 (1942-07-01), Campbell
patent: 2766064 (1956-10-01), Schweitzer
patent: 3093309 (1963-06-01), Watanabe
patent: 3371145 (1968-02-01), Senay
patent: 3408985 (1968-11-01), Sedlacsik
patent: 3425625 (1969-02-01), Probst
patent: 3653592 (1972-04-01), Cowan
patent: 3677470 (1972-07-01), Probst et al.
patent: 3698634 (1972-10-01), Hamilton
patent: 3737090 (1973-06-01), Wech
patent: 3767115 (1973-10-01), Kozinski et al.
patent: 3815820 (1974-06-01), Probst
patent: 3843052 (1974-10-01), Cowan
patent: 3907202 (1975-09-01), Binoche
patent: 3937401 (1976-02-01), Luderer et al.
patent: 4002777 (1977-01-01), Juvinall et al.
patent: 4009829 (1977-03-01), Sickles
patent: 4055300 (1977-10-01), Binoche
patent: 4073002 (1978-02-01), Sickles et al.
patent: 4106697 (1978-08-01), Sickles et al.
patent: 4120017 (1978-10-01), Sickles
patent: 4186886 (1980-02-01), Sickles
patent: 4214709 (1980-07-01), Scull et al.
patent: 4219157 (1980-08-01), Binoche
patent: 4232824 (1980-11-01), Binoche
patent: 4238077 (1980-12-01), Hori
patent: 4245784 (1981-01-01), Garcin
patent: 4248386 (1981-02-01), Morle
patent: 4255777 (1981-03-01), Kelly
patent: 4258655 (1981-03-01), Bagby et al.
patent: 4258885 (1981-03-01), Legeza
patent: 4266721 (1981-05-01), Sickles
patent: 4290091 (1981-09-01), Malcolm
patent: 4313968 (1982-02-01), Sickles et al.
patent: 4331298 (1982-05-01), Bentley et al.
patent: 4341347 (1982-07-01), DeVittorio
patent: 4341815 (1982-07-01), Bagby et al.
patent: 4343433 (1982-08-01), Sickles
patent: 4347984 (1982-09-01), Sickles
patent: 4355764 (1982-10-01), Rood et al.
patent: 4377603 (1983-03-01), Itoh et al.
patent: 4381533 (1983-04-01), Coffee
patent: 4440349 (1984-04-01), Sickles
patent: 4476515 (1984-10-01), Coffee
patent: 4572438 (1986-02-01), Traylor
patent: 4598871 (1986-07-01), Hartle
patent: 4611762 (1986-09-01), Turner et al.
patent: 4613075 (1986-09-01), Owen
patent: 4721255 (1988-01-01), Lind
patent: 4745520 (1988-05-01), Hughey
patent: 4752034 (1988-06-01), Kuhn et al.
patent: 4761299 (1988-08-01), Hufstetler et al.
patent: 4819879 (1989-04-01), Sharpless et al.
patent: 4842203 (1989-06-01), Kuhn et al.
patent: 4911367 (1990-03-01), Lasley
patent: 4915303 (1990-04-01), Hufgard
patent: 5044564 (1991-09-01), Sickles
patent: 5090619 (1992-02-01), Barthold et al.
patent: 5090623 (1992-02-01), Burns et al.
patent: 5178330 (1993-01-01), Rodgers
patent: 5188290 (1993-02-01), Gebauer et al.
patent: 5222663 (1993-06-01), Noakes et al.
Improving Liquid Spray Transfer Efficiency, Glen L. Muir, Graco Inc. Minneapolis, MN Mar. 1995, pp. 63-67.
Spraying Water-Borne Coating Electrostatically, Jim Scharfenberger, Manager, Process Tech., Indianapolis, IN, Jan. 1989, pp. 48-56.
Should You Consider Air-Assisted Airless Spray?, Mike Osborne and John Treuschel, The DeVilbiss Co., Toledo, OH, Jan. 1989, pp. 59-64.
Trends in Electrostatic Hand Guns, David c. Burdakin, Product Manager Ransburg Electrostatic Equipment, Inc. Indianapolis, IN, Mar. 1987, pp. 86-93.
Spray Painting Equipment, Products Finishing, Mar. 1987, pp. 79-85.
Charge to Mass Distributions in Electrostatic Sprays, T.C. Anestos, J.E. Sickles, R.M. Tepper, IEEE Transaction on Industry Applications, vol. IA-13, No. 2, Mar./Apr. 1977, pp. 168-177.
Specific Charge Measurements in Electrostatic Air Sprays, J.E. McCarthy, Jr. and D.W. Senser, Thermal Sciences and Propulsion Center School of Mechanical Engineering, Purdue University, West Lafayette, IN, pp. 1-6.
Electrostatic Atomisation of Conducting Liquids Using AC Superimposed on DC Fields. W. Balachandran, W. Machowski, and C.N. Ahmad, Dept. of Electronic and Electrical Engineering, University of Surrey Guildford, Surrey GU2 5XH, U.K., pp. 1369-1373.
LandOfFree
Induction spray charging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Induction spray charging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Induction spray charging apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1222855