US 11,950,677 B2
Devices and methods for electrostatic application of cosmetics
Zane Bowman Allen Miller, Seattle, WA (US); Kyle Harris Yeates, Redmond, WA (US); Sam Benjamin Goldberg, Seattle, WA (US); Joseph Eric Skidmore, Sedona, AZ (US); Lily Truong, Redmond, WA (US); and Julian John Trowbridge, Seattle, WA (US)
Assigned to L'Oreal, Paris (FR)
Filed by L'Oreal, Paris (FR)
Filed on Feb. 28, 2020, as Appl. No. 16/805,211.
Claims priority of provisional application 62/811,843, filed on Feb. 28, 2019.
Prior Publication US 2020/0275758 A1, Sep. 3, 2020
Int. Cl. A45D 33/02 (2006.01); B05B 5/03 (2006.01)
CPC A45D 33/02 (2013.01) [A45D 2200/10 (2013.01); A45D 2200/202 (2013.01); B05B 5/032 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system for electrostatic deposition of cosmetic material on a surface, the system comprising:
a housing;
a nozzle configured for breaking the cosmetic material into cosmetic particles and for directing the cosmetic particles out of the housing and toward the surface;
a reservoir configured for holding the cosmetic material, wherein the reservoir is connected to the nozzle;
a nozzle electrode configured proximately to the nozzle, wherein the nozzle electrode is configured to charge the cosmetic particles;
a target electrode configured for charging the surface; and
a controller having instructions, which, when executed, cause the controller to:
during a first time period, charge the surface at a first polarity;
charge the cosmetic particles at a second polarity, wherein the second polarity is different from the first polarity; and
during a second time period, repel the cosmetic particles from the surface by charging the surface at the second polarity.