公开(公告)号：US20180263741A1

公开(公告)日：2018-09-20

申请号：US15542501

申请日：2015-06-25

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A61C15/02 ,  A46B5/00

CPC classification number: A61C15/02 ,  A46B5/00 ,  A46B2200/108 ,  A61C2201/00

Abstract: An interdental cleaning instrument is equipped with a base part and a cleaning part. The base part has a shaft part and a grip part. At least the shape of the base part is set in a manner such that a first pressing force required to press a portion spaced 2.5 mm apart from a tip of the cleaning part in 10 mm is 0.3 N or more and 1.4 N or less in a state in which a portion spaced 10 mm apart from the tip of the cleaning part is fixed, and a second pressing force required to press a portion spaced 8.0 mm apart from the tip of the cleaning part in 10 mm is 0.5 N or more and 2.5 N or less in a state in which a portion spaced 35 mm apart from the tip of the cleaning part is fixed.

公开(公告)号：US20210290353A1

公开(公告)日：2021-09-23

申请号：US17050547

申请日：2019-04-26

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A61C15/02

Abstract: The interdental cleaning tool includes a base portion including a shaft portion that extends from a base end side to a top end side and gradually becomes thinner from the base end side to the top end side, a top end side cleaning portion including a top end side body covering a top end side portion of the shaft portion and top end side bristles protruding outward from an outer circumferential surface of the top end side body, and a base end side cleaning portion including a base end side body covering a portion of the shaft portion in the base end side than the top end side body and base end side bristles protruding outward from an outer circumferential surface of the base end side body. The top end side cleaning portion has a higher hardness than the base end side cleaning portion.

公开(公告)号：US20210186201A1

公开(公告)日：2021-06-24

申请号：US16621661

申请日：2018-06-14

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A46B15/00

Abstract: An interdental cleaning tool (2) includes a base portion (10) having a shaft portion (20) and a grip portion (30), and a cleaning portion (40). The cleaning portion (40) has a cleaning portion main body (42) and brush portions (44). Each of the brush portions (44) has a brush main body having a shape protruding outward from the cleaning portion main body in an axially intersecting direction, and a protrusion that has a shape protruding outward in a reference plane, which is a plane encompassing a center axis of the shaft portion (20) and a center axis of the brush main body, from an outer edge of the brush main body when the brush main body is cut along the reference plane, and is continuously connected along the outer edge of the brush main body.

公开(公告)号：US20210251373A1

公开(公告)日：2021-08-19

申请号：US17050525

申请日：2019-04-26

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A46B3/04 ,  A46D1/00

Abstract: An interdental cleaning tool capable of reducing possibility of a cleaning portion being detached from a shaft portion includes a base portion including a shaft portion (20) having a shape insertable in an interdental space, and a cleaning portion (50) that covers at least a portion of the shaft portion and is capable of cleaning an interdental space. The base portion further includes a protruding portion (40) that protrudes from a covered portion (22) in a direction intersecting the shaft portion (20), the covered portion (22) being a portion of the shaft portion (20) and covered by the cleaning portion (50).

公开(公告)号：US20180279766A1

公开(公告)日：2018-10-04

申请号：US15542494

申请日：2015-06-25

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A46D1/00 ,  A47L25/00

Abstract: A cleaning implement equipped with: a shaft part having an insertion end section and a base end section; and a cleaning part comprising an elastomer and capable of cleaning a gap. The cleaning part has a cleaning-part body and a guide part for projecting farther outward in the axial direction than the insertion end section, and guiding the insertion of the cleaning-part body into a gap. The projection dimension of the guide part from the insertion end section is equal to or greater than the thickness of the cleaning-part body, and the guide part has a shape that can be elastically deformed so as to be displaced relative to the insertion end section in the axially perpendicular direction.

公开(公告)号：US20180256298A1

公开(公告)日：2018-09-13

申请号：US15755267

申请日：2016-08-26

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA ,  Shinji YUUMEI

IPC: A61C15/02 ,  A46B3/00 ,  A46B15/00

CPC classification number: A61C15/02 ,  A46B3/005 ,  A46B15/0093 ,  A46B2200/108 ,  B29C45/14065 ,  B29C45/1676

Abstract: [Problem] To provide a base part, an interdental cleaning tool, and a method for manufacturing the interdental cleaning tool, capable of preventing bending of a shaft part when a resin material is filled from an insertion end. [Solution] A base part includes a shaft part (20) and a grip part (30). The base part is used for forming an interdental cleaning tool by filling, inside a metal mold having a shape that forms a filling space around the shaft part (20), a resin material into the filling space with the shaft part (20) clamped by a holding pin. The shaft part (20) includes a first guide groove (24) formed on one side with respect to an axially parallel plane and a second guide groove (26) formed on the other side with respect to the axially parallel plane. The first guide groove (24) and the second guide groove (26) extend in the axial direction from an insertion end (22a) toward a base end and have a shape recessed toward the center of the shaft part (20) from the outer peripheral face of a region other than the first guide groove (24) and the second guide groove (26) in the shaft part (20).

公开(公告)号：US20210267732A1

公开(公告)日：2021-09-02

申请号：US17256371

申请日：2019-05-16

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA ,  Yuji SAIKI ,  Tomokazu YOSHIDA

IPC: A61C15/02 ,  A46B5/02

Abstract: Provided is an interdental cleaning tool that is not too soft and is unlikely to break during use. An interdental cleaning tool according to the present invention includes: a cleaning tool body that is made of a synthetic resin, and includes a grip portion that is capable of being gripped with fingers of a user and a shaft portion that extends in one direction from the grip portion; and a cleaning portion configured to clean between teeth, covering a leading end of the shaft portion, and made of an elastomer, wherein Y>−0.07X+3.3 is satisfied, where Y is a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 15 mm away from a leading end of the cleaning portion, and X is a rotational angle (degrees) when the maximum torque value is measured.

公开(公告)号：US20210251375A1

公开(公告)日：2021-08-19

申请号：US17050522

申请日：2019-04-26

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A46B9/04 ,  A46B3/04

Abstract: The cleaning portion includes a cleaning portion body and a brush portion. The brush portion includes a first brush group and a second brush group. Bristles of the first brush group and the second brush group each have a shape whose a protruding length from the cleaning portion body gradually increases from a top end side to a base end side of the shaft portion. A protruding length from the cleaning portion body of a predetermined numbered one of the second brush group from the top end side to the base end side of the shaft portion is larger than a protruding length from the cleaning portion body of the predetermined numbered one of the bristles of the first brush group from the top end side to the base end side of the shaft portion.

公开(公告)号：US20210145554A1

公开(公告)日：2021-05-20

申请号：US16621667

申请日：2018-06-14

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A61C15/02 ,  A46B9/02 ,  A46B5/02 ,  A46B15/00 ,  A46D1/00

Abstract: An interdental cleaning tool (2) includes a base portion (10) having a shaft portion (20) and a grip portion (30), and a cleaning portion (40). The cleaning portion (40) has a cleaning portion main body (42) and a plurality of brush portions (44). Each of the brush portions (44) has a brush main body having a shape protruding outward from the cleaning portion main body in an axially intersecting direction, and a scraping step portion that protrudes from an outer circumferential surface of the brush main body in a direction orthogonal to the axially intersecting direction, the brush main body extending from a proximal end portion to a distal end portion of the brush main body and being formed to be flat.

公开(公告)号：US20230148742A1

公开(公告)日：2023-05-18

申请号：US17050539

申请日：2019-04-26

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA

IPC: A46B9/02 ,  A46D1/00

CPC classification number: A46B9/026 ,  A46D1/00 ,  A46B2200/108

Abstract: An interdental cleaning tool includes a base portion including a shaft portion having a shape insertable in an interdental space, a top end side cleaning portion including a top end side body covering a top end side portion of the shaft portion, and a plurality of top end side bristles protruding outward from an outer circumferential surface of the top end side body, and a base end side cleaning portion including a base end side body covering a portion of the shaft portion further in a base end side than the top end side body, and a plurality of base end side bristles protruding outward from an outer circumferential surface of the base end side body. The top end side cleaning portion has a lower hardness than the base end side cleaning portion.