US 12,269,072 B2
Personal care device
Priscilla Brandao Silva, Eindhoven (NL); Lutz Christian Gerhardt, Eindhoven (NL); Mark Thomas Johnson, Arendonk (BE); and Bart Gottenbos, Budel (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 18/269,197
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Nov. 19, 2021, PCT No. PCT/EP2021/082361
§ 371(c)(1), (2) Date Jun. 22, 2023,
PCT Pub. No. WO2022/135806, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 20216418 (EP), filed on Dec. 22, 2020.
Prior Publication US 2024/0042498 A1, Feb. 8, 2024
Int. Cl. B08B 7/04 (2006.01); A46B 15/00 (2006.01); B08B 1/12 (2024.01); B08B 7/00 (2006.01)
CPC B08B 7/0035 (2013.01) [A46B 15/0004 (2013.01); A46B 15/001 (2013.01); A46B 15/0012 (2013.01); A46B 15/0034 (2013.01); B08B 1/12 (2024.01); B08B 7/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A personal care device, comprising:
an RF signal generator adapted to generate one or more RF drive signals in a frequency range from 3 kHz to 30 GHz for use during operation in driving a plurality of RF electrodes in accordance with a drive scheme; and
a controller adapted to detect a degraded functional state of the RF electrodes by
monitoring one or more electrical characteristics of the RF signal generator during operation, the one or more electrical characteristics being related to a functional status of the RF electrodes;
comparing the electrical characteristics with one or more pre-determined criteria; and
triggering a response action dependent upon the electrical characteristics meeting the one or more pre-determined criteria.