US 12,263,497 B2
Electrostatic spray device, cartridge, and cover
Shinji Kodama, Sumida-ku (JP)
Assigned to KAO CORPORATION, Tokyo (JP)
Appl. No. 17/614,696
Filed by KAO CORPORATION, Tokyo (JP)
PCT Filed May 22, 2020, PCT No. PCT/JP2020/020413
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/241526, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-103334 (JP), filed on May 31, 2019; and application No. 2020-089479 (JP), filed on May 22, 2020.
Prior Publication US 2022/0161282 A1, May 26, 2022
Int. Cl. B05B 5/035 (2006.01); B05B 5/053 (2006.01); B05B 5/16 (2006.01); A61M 35/00 (2006.01)
CPC B05B 5/035 (2013.01) [B05B 5/0533 (2013.01); B05B 5/0535 (2013.01); B05B 5/1691 (2013.01); A61M 35/003 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A hand-held type electrostatic spray device which has a shape or a size that a user is capable of retaining with a hand and sprays an electrically charged liquid, the electrostatic spray device comprising:
a voltage source;
a base electrode for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion;
an additional electrode to which a voltage is applied from the voltage source; and
a conductor which is electrically isolated from the base electrode and the additional electrode and is disposed apart with respect to the additional electrode in a spray direction of the liquid,
wherein at least a part of the conductor overlaps with the additional electrode viewed from a direction along the spray direction of the liquid, and
wherein the conductor is disposed along a circumference of the tip portion of the base electrode.