US 11,937,688 B2
Toothbrushes and audible signal generating components thereof
Kwei Chung Li, Hong Kong (HK)
Assigned to Smart Chip Microelectronic Co. Limited, Hong Kong (HK)
Filed by Smart Chip Microelectronic Co. Limited, Hong Kong (HK)
Filed on Jun. 23, 2021, as Appl. No. 17/355,191.
Claims priority of application No. 22020009824.6 (HK), filed on Jun. 23, 2020.
Prior Publication US 2021/0393025 A1, Dec. 23, 2021
Int. Cl. A46B 15/00 (2006.01); A46B 9/04 (2006.01); A46B 13/02 (2006.01); A61C 17/20 (2006.01); A61C 17/34 (2006.01); G08B 3/10 (2006.01); H04L 25/49 (2006.01); H04L 67/12 (2022.01)
CPC A46B 15/004 (2013.01) [A46B 9/04 (2013.01); A46B 13/02 (2013.01); A46B 15/0006 (2013.01); A46B 15/0008 (2013.01); A61C 17/20 (2013.01); A61C 17/3436 (2013.01); A61C 17/3445 (2013.01); A61C 17/3472 (2013.01); A61C 17/349 (2013.01); G08B 3/10 (2013.01); H04L 25/4902 (2013.01); H04L 67/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A toothbrush comprising a drive mechanism and electronic circuitry configured to drive the drive mechanism to execute toothbrushing motions, wherein the electronic circuitry comprises a drive circuitry and a controller which is configured to form a drive signal to operate the drive circuitry to generate drive current, wherein the drive signal comprises a plurality of signal packets, wherein a signal packet has a signal packet duration and comprises a train of switching signals, wherein the switching signals are configured to repeatedly switch on and switch off drive current supply to the drive mechanism at a switching frequency fs, and wherein the signal packet duration is configured to define a rhythm of toothbrushing motions.