John B Wolanin

US Patent:

6478242, Nov 12, 2002

Filed:

Jan 31, 2000

Appl. No.:

09/490099

Inventors:

Alan J. Knobbe - Amherst OH
Andrew M. Peddie - North Royalton OH
John B. Wolanin - Brunswick OH
John C. A. Traylor - Elyria OH
Bryan J. Bowman - Indianapolis IN
Paul F. Meyers - Indianapolis IN
Daniel J. Thompson - Vermilion OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 500

US Classification:

239690, 239708, 239600

Abstract:

An electrostatic spray gun apparatus includes a spray gun housing and a nozzle attached to a spray end of the housing, and a powder path that extends in a substantially straight line along an axis of the housing from the powder inlet to the powder outlet. The powder path is in the form of an enclosed smooth powder passage that is substantially continuous and uninterrupted from the powder inlet to the powder outlet to eliminate substantially all recesses or gaps that could capture or trap powder. The powder passage is formed by a plurality of tubular segments that are aligned along the housing axis and abut end to end. that when assembled in the housing axially compress the segments together to substantially eliminate dead spots or recesses to form the continuous smooth powder path. A gun purge function is provided that allows a purge line to be installed on the gun assembly. A cartridge valve and conductor assembly is provided between the gun electrode in the nozzle and the output of the voltage multiplier.

US Patent:

6796519, Sep 28, 2004

Filed:

Sep 22, 2000

Appl. No.:

09/667663

Inventors:

Alan J. Knobbe - Loveland OH
Andrew M. Peddie - North Royalton OH
John B. Wolanin - Brunswick OH
John C. A. Traylor - Elyria OH
Bryan J. Bowman - Indianapolis IN
Paul F. Meyers - Indianapolis IN
Daniel J. Thompson - Vermilion OH
Joseph G. Schroeder - North Royalton OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 500

US Classification:

239690, 239697, 239600, 138110, 248 49, 248 75

Abstract:

An electrostatic spray gun apparatus includes a spray gun housing and a nozzle attached to a spray end of the housing, and a powder path that extends in a substantially straight line along an axis of the housing from the powder inlet to the powder outlet. The powder path is in the form of an enclosed smooth powder passage that is substantially continuous and uninterrupted from the powder inlet to the powder outlet to eliminate substantially all recesses or gaps that could capture or trap powder. The powder passage is formed by a plurality of tubular segments that are aligned along the housing axis and abut end to end, that when assembled in the housing axially compress the segments together to substantially eliminate dead spots or recesses to form the continuous smooth powder path. A gun purge function is provided that allows a purge line to be installed on the gun assembly. A cartridge valve and conductor assembly is provided between the gun electrode in the nozzle and the output of the voltage multiplier.

US Patent:

20050023374, Feb 3, 2005

Filed:

Aug 26, 2004

Appl. No.:

10/927269

Inventors:

Alan Knobbe - Loveland OH, US
Andrew Peddie - North Royalton OH, US
John Wolanin - Brunswick OH, US
John Traylor - Elyria OH, US
Bryan Bowman - Indianapolis IN, US
Paul Meyers - Indianapolis IN, US
Daniel Thompson - Vermilion OH, US
Joseph Schroeder - North Royalton OH, US

International Classification:

B05B005/00

US Classification:

239280000, 239690000

Abstract:

An electrostatic spray gun apparatus includes a spray gun housing and a nozzle attached to a spray end of the housing, and a powder path that extends in a substantially straight line along an axis of the housing from the powder inlet to the powder outlet. The powder path is in the form of an enclosed smooth powder passage that is substantially continuous and uninterrupted from the powder inlet to the powder outlet to eliminate substantially all recesses or gaps that could capture or trap powder. The powder passage is formed by a plurality of tubular segments that are aligned along the housing axis and abut end to end. that when assembled in the housing axially compress the segments together to substantially eliminate dead spots or recesses to form the continuous smooth powder path. A gun purge function is provided that allows a purge line to be installed on the gun assembly. A cartridge valve and conductor assembly is provided between the gun electrode in the nozzle and the output of the voltage multiplier. The cartridge includes a conductive path to provide electrical continuity from the multiplier to the gun electrode, and also includes valve, preferably in the form of a stem check valve, that closes when the gun electrode is removed or at least unseated from the nozzle. The gun also includes a tube mount arrangement wherein the tube mount is rigidly held together with the gun housing in axial compression by a tie bar.

US Patent:

55823475, Dec 10, 1996

Filed:

Oct 11, 1994

Appl. No.:

8/320948

Inventors:

Alan J. Knobbe - Amherst OH
Terrence M. Fulkerson - Parma OH
Curtis B. Haller - Lorain OH
John B. Wolanin - Strongsville OH

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05B 503

US Classification:

239 3

Abstract:

A particle spray apparatus includes a spray gun having a deflector connected with a housing assembly. An electrode arrangement extends from the housing assembly into the deflector and is exposed to the flow of air with particles entrained therein to electrostatically charge the particles. The electrode arrangement is exposed to a flow of fluid to remove contaminants which may accumulate around components of the electrode arrangement. Accumulation of particles on an end surface of the deflector is discouraged by a flow of fluid from a chamber in the deflector through a porous member. The flow of fluid from the chamber is also conducted through a porous electrode sheet which extends along the porous member. Due to the relatively high voltage conducted through the electrode arrangement, an arc may tend to form in a passage along which fluid is conducted to the electrode arrangement. To prevent this from occurring, the passage through which fluid is conducted to the electrode arrangement is relatively long.