Ronald F Schroeder

US Patent:

RE38526, Jun 8, 2004

Filed:

Sep 5, 2001

Appl. No.:

09/947069

Inventors:

Michael P. Hansinger - Olmsted Falls OH
Jeffrey T. Conrad - Valley City OH
Woodie R. Francis - Avon Lake OH
Harold D. Beam - Oberlin OH
Joseph J. Karbowniczek - Elyria OH
Ronald R. Schroeder - Amherst OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 504

US Classification:

239 3, 239224, 239580, 239600, 239703

Abstract:

An electrostatic, liquid spray, rotary atomizer has an atomizer housing, a power supply within the housing and an atomizer cup at a front end of the housing. The atomizer cup, which is formed of a non-conductive material, has several elongate conductive pathways embedded in the body of the cup. Each conductive pathway has one end exiting an outer surface at a rear end of the cup for receiving the charge from the power supply and another end exiting an inner surface at a front end of the cup for conveying an electrical charge from the power supply to the liquid (paint) particles passing through the atomizer cup. An electrode is provided for maintaining a small voltage at the access hole. The rotary atomizer with the improved charge ring and rotary cup can be mounted to a robot and connected to the liquid supply by an elongated spiral passageway to increase the electrical resistance between the atomizer and the liquid supply so that a very small electrical charge, if any, will be present in the passageway carrying paint to the rotary cup.

US Patent:

56975597, Dec 16, 1997

Filed:

Mar 15, 1995

Appl. No.:

8/404355

Inventors:

Dennis Davis - Bay Village OH
Harold Beam - Oberlin OH
Ronald R. Schroeder - Amherst OH
Carl Bretmersky - No. Olmsted OH
Stephen Lee Merkel - Bay Village OH
Thomas Andreas Trautzsch - Macedonia OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 504
B05B 310

US Classification:

239703

Abstract:

A rotary atomizer has an internal power supply in the atomizer housing about which is passed cooling air. The air then flows out of the atomizer housing in a twisting direction as vectored air in the same direction of rotation as the atomizer head to eliminate any vacuum condition around the atomizer head and to provide shaping control of the coating being sprayed. Exhaust air from an air turbine motor driving the atomizer head is directed around the outside surface of the atomizer housing to prevent the liquid coating from wrapping back and accumulating onto the atomizer housing. A speed sensing system is mounted in the atomizer housing and utilizes both magnetics and optics for accurately measuring the rotational speed of the air turbine motor in the presence of high electrostatic charge and RF fields from the internal power supply. The power supply is disposed within the atomizer housing about the turbine motor. The atomizing head, in one embodiment, incorporates an insert which divides the flow of coating material into a plurality of individual streams to improve the atomization of the coating material from the atomizing head.

US Patent:

60562153, May 2, 2000

Filed:

Apr 16, 1997

Appl. No.:

8/834290

Inventors:

Michael P. Hansinger - Olmsted Falls OH
Harold Beam - Oberlin OH
Dennis J. Davis - Bay Village OH
Ronald R. Schroeder - Amherst OH
Carl Bretmersky - North Olmsted OH
Stephen Lee Merkel - Bay Village OH
Thomas Andreas Trautzsch - Macedonia OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 504

US Classification:

239703

Abstract:

A rotary atomizer has an internal power supply in the atomizer housing about which is passed cooling air. The air then flows out of the atomizer housing in a twisting direction as vectored air in the same direction of rotation as the atomizer head to eliminate any vacuum condition around the atomizer head and to provide shaping control of the coating being sprayed. A portion of the exhaust air from an air turbine motor driving the atomizer head with a turbine shaft is directed through a passageway between a stationary fluid tube within the turbine shaft and the rotary shaft to direct the exhaust air into the atomizer head to mix with the coating and create an air barrier that prevents coating material from leaking back into the rotary atomizer device. The remaining portion of the exhaust air from the air turbine motor is channeled around the outside surface of the housing of the rotary atomizer device to prevent liquid coating material from wrapping back and attaching to the atomizer housing.

US Patent:

59473770, Sep 7, 1999

Filed:

Aug 28, 1997

Appl. No.:

8/919831

Inventors:

Michael P. Hansinger - Olmsted Falls OH
Jeffrey A. Conrad - Valley City OH
Woodie Francis - Avon Lake OH
Harold Beam - Oberlin OH
Joseph Jerome Karbowniczek - Elyria OH
Ronald Schroeder - Amherst OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 504

US Classification:

239 3

Abstract:

An electrostatic, liquid spray, rotary atomizer has an atomizer housing, a power supply within the housing and an atomizer cup at a front end of the housing. The atomizer cup, which is formed of a non-conductive material, has several elongate conductive pathways embedded in the body of the cup. Each conductive pathway has one end exiting an outer surface at a rear end of the cup for receiving the charge from the power supply and another end exiting an inner surface at a front end of the cup for conveying an electrical charge from the power supply to the liquid (paint) particles passing through the atomizer cup. An electrode is provided for maintaining a small voltage at the access hole. The rotary atomizer with the improved charge ring and rotary cup can be mounted to a robot and connected to the liquid supply by an elongated spiral passageway to increase the electrical resistance between the atomizer and the liquid supply so that a very small electrical charge, if any, will be present in the passageway carrying paint to the rotary cup.

US Patent:

60534370, Apr 25, 2000

Filed:

Apr 29, 1999

Appl. No.:

9/301964

Inventors:

Michael P. Hansinger - Olmsted Falls OH
Jeffrey T. Conrad - Valley City OH
Woodie Francis - Avon Lake OH
Harold Beam - Oberlin OH
Joseph Jerome Karbowniczek - Elyria OH
Ronald Schroeder - Amherst OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 504

US Classification:

239703

Abstract:

An electrostatic, liquid spray, rotary atomizer has an atomizer housing, a power supply within the housing and an atomizer cup at a front end of the housing. The atomizer cup, which is formed of a non-conductive material, has several elongate conductive pathways embedded in the body of the cup. Each conductive pathway has one end exiting an outer surface at a rear end of the cup for receiving the charge from the power supply and another end exiting an inner surface at a front end of the cup for conveying an electrical charge from the power supply to the liquid (paint) particles passing through the atomizer cup. A number of conductive extensions are embedded in a frustroconical front portion of the cup. Each conductive extension has one end which is contiguous with the inner surface exiting end of selected ones of the conductive pathways, a first opposite end portion exiting an outer surface of the frustroconical front portion of the cup and a second opposite end portion exiting an inner surface of the frustroconical front portion of the cup. An annular charge ring is mounted to the front of the atomizer housing and is configured to accommodate the atomizer cup with conductive pathways and extensions and has an access hole for facilitating insertion of a tool for quickly demounting the atomizer cup for cleaning or replacement.