Joseph J Crowley

US Patent:

6682004, Jan 27, 2004

Filed:

Jan 12, 2001

Appl. No.:

09/759550

Inventors:

Bryan Michael Kadlubowski - Manchester MD
David Edward Wilson - Reisterstown MD
Jeffrey Keith Leppla - Baltimore MD
Wataru Hirose - Kyoto, JP
Yoshihiro Wakiyama - Uji, JP
Takeshi Aoyama - Uji, JP
Takeshi Mori - Uji, JP
Yoshito Komada - Yamatokooriyama, JP
Toru Sumiyoshi - Ashiya, JP
Joseph Michael Crowley - Morgan Hill CA

Assignee:

The Procter Gamble Company - Cincinnati OH

International Classification:

B05B 500

US Classification:

239690, 2396901, 239691, 239692, 239708, 239332

Abstract:

The present invention is an electrostatic spraying device to electrostatically charge and dispense a product from a reservoir to a point of dispersal that includes a nozzle having an exit orifice and being disposed at the point of dispersal to disperse the product. A channel is included that permits the electrostatic charging of product. A positive displacement mechanism is used to move the product from the reservoir to the nozzle. A power source supplies an electrical charge. A portion of a high voltage electrode being disposed between the reservoir and the nozzle is used to electrostatically charge product within the channel at a charging location. A distance between the charging location and the nozzle exit orifice is governed by V /d100,000, wherein V =an output voltage of said high voltage power supply and d=linear distance between the charging location and said nozzle exit orifice.

US Patent:

7152817, Dec 26, 2006

Filed:

Jan 12, 2001

Appl. No.:

09/759551

Inventors:

David Edward Wilson - Reisterstown MD, US
Bryan Michael Kadlubowski - Manchester MD, US
Jeffrey Keith Leppla - Baltimore MD, US
Wataru Hirose - Kyoto, JP
Yoshihiro Wakiyama - Uji, JP
Takeshi Aoyama - Uji, JP
Takeshi Mori - Uji, JP
Toru Sumiyoshi - Ashiya, JP
Joseph Michael Crowley - Morgan Hill CA, US

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

B05B 5/00

US Classification:

239690, 239692, 239704, 239706, 239708

Abstract:

An electrostatic spray device and a cartridge for an electrostatic spray device that reduce the occurrence of electrically induced emulsion product separation are disclosed. The device and/or the cartridge may reduce electrically induced emulsion product separation by providing a conductive high voltage shield substantially around the product reservoir. Alternatively, the device and/or the cartridge may prevent the product located at the charging location from being in fluid communication with the product reservoir so that the product that is being charged cannot flow back into the product reservoir. The device and/or cartridge may alternatively reduce electrically induced emulsion product separation by minimizing the volume of product between the charging location and the exit orifice of the nozzle.