US 12,453,409 B2
Electric toothbrush
Young Wook Kim, Seoul (KR)
Assigned to Proxihealthcare Inc., Ulsan (KR)
Appl. No. 18/007,908
Filed by Proxihealthcare Inc., Ulsan (KR)
PCT Filed Dec. 15, 2021, PCT No. PCT/KR2021/019127
§ 371(c)(1), (2) Date Dec. 2, 2022,
PCT Pub. No. WO2023/038207, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 10-2021-0119781 (KR), filed on Sep. 8, 2021.
Prior Publication US 2024/0008634 A1, Jan. 11, 2024
Int. Cl. A46B 15/00 (2006.01); A61C 17/22 (2006.01); F21V 33/00 (2006.01)
CPC A46B 15/0022 (2013.01) [A46B 15/0036 (2013.01); A61C 17/22 (2013.01); F21V 33/0064 (2013.01); A61C 2204/002 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electric toothbrush comprising:
an outer case including a handle part, and a head part extending from the handle part and having an opening area open to front;
first and second electrodes disposed in the opening area and providing electromagnetic waves corresponding to a driving signal; and
a head cover having a plurality of bristle holes, a first electrode hole, and a second electrode hole, which are formed therein, and closing the opening area,
wherein the first and second electrodes penetrate the first and second electrode holes, respectively, and are exposed to outside,
the electric toothbrush further comprising:
a main substrate on which a signal supply unit for generating the driving signal is mounted, the main substrate being accommodated in the handle part; and
a sub-substrate elongated from the main substrate toward the head part and having an end portion positioned within the opening area,
wherein a first substrate hole and a second substrate hole are formed at the end portion of the sub-substrate, and
wherein the first electrode is inserted into and fixed to the first substrate hole, and the second electrode is inserted into and fixed to the second substrate hole.