US 12,310,490 B2
Interdental brush and manufacturing method for the same
Hye Ju Yu, Seoul (KR); Kyung Sub Lee, Seoul (KR); and Wan Sik Jang, Seoul (KR)
Assigned to LG HOUSEHOLD & HEALTH CARE LTD., Seoul (KR)
Filed by LG HOUSEHOLD & HEALTH CARE LTD., Seoul (KR)
Filed on Sep. 13, 2022, as Appl. No. 17/943,855.
Claims priority of application No. 10-2021-0122799 (KR), filed on Sep. 14, 2021; and application No. 10-2021-0122800 (KR), filed on Sep. 14, 2021.
Prior Publication US 2023/0082568 A1, Mar. 16, 2023
Int. Cl. A46B 5/02 (2006.01); A46D 3/00 (2006.01); A61C 15/00 (2006.01)
CPC A46B 5/026 (2013.01) [A46D 3/005 (2013.01); A61C 15/00 (2013.01); A46B 2200/108 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An interdental brush comprising:
a base part comprising:
a handle part that is grippable by a user;
a core part extending from the handle part that has a diameter or thickness that decreases as a distance from the handle part increases;
a first through hole;
a second through hole spaced apart from the first through hole in a longitudinal direction; and
a concave part between a lower end of the handle part and the core part, having a shape extending to a periphery of the first through hole, and having a smaller thickness than other regions; and
a soft part comprising an anti-slip part covering at least a part of the handle part, and an interdental cleaning part covering the core part and comprising a plurality of projections for removing foreign substances between teeth, the soft part being formed of an elastic material,
wherein the soft part is coupled to a space formed by at least one of the first through hole and the second through hole, and
wherein the first through hole and the second through hole are opened in a vertical direction, and the concave part includes a surface exposed in a side direction different from the vertical direction and the longitudinal direction such that a groove is not formed.