公开(公告)号：US11987322B2

公开(公告)日：2024-05-21

申请号：US17878917

申请日：2022-08-02

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/02 ,  B62M9/00 ,  F16H55/30

CPC classification number: B62M9/02 ,  B62M9/00 ,  F16H55/30 ,  F16H2055/306

Abstract: A bicycle sprocket comprises sprocket teeth. The sprocket teeth include at least one first tooth and at least one second tooth. The at least one first tooth has a first radial-tooth height. The at least one first tooth has a first chain-engaging axial width which is smaller than a first distance defined between opposed outer link plates of a bicycle chain and which is larger than a second distance defined between opposed inner link plates of the bicycle chain. The first radial-tooth height is greater than the first chain-engaging axial width. The at least one second tooth has a second radial-tooth height. The at least one second tooth has a second chain-engaging axial width which is smaller than the second distance. The second radial-tooth height is greater than the second chain-engaging axial width. The first radial-tooth height is greater than the second radial-tooth height.

公开(公告)号：US10549816B2

公开(公告)日：2020-02-04

申请号：US15387528

申请日：2016-12-21

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/10 ,  F16H55/30

Abstract: A bicycle sprocket has a rotational center axis. The bicycle sprocket comprises a sprocket body and a chain engagement structure. The chain engagement structure is arranged on a radially outer periphery of the sprocket body. The chain engagement structure includes a plurality of chain-driving teeth to engage with a bicycle chain to transmit a rotational driving force to the bicycle chain, at least one downshifting facilitation area to facilitate a downshifting operation from the bicycle sprocket to a smaller sprocket, and at least one downshifting facilitation projection disposed in the at least one downshifting facilitation area to engage with the bicycle chain when the bicycle chain shifts from the bicycle sprocket toward the smaller sprocket.

公开(公告)号：US10407127B2

公开(公告)日：2019-09-10

申请号：US15361062

申请日：2016-11-24

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/12 ,  F16H55/30

Abstract: A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, at least one shifting facilitation projection, and at least one bump portion. The at least one shifting facilitation projection is configured to engage with a bicycle chain in a first shifting operation in which the bicycle chain is shifted from the bicycle sprocket toward a smaller sprocket. The at least one bump portion is provided on a downstream side of the at least one shifting facilitation projection in a driving rotational direction in which the bicycle sprocket rotates during pedaling. The at least one bump portion is spaced apart from the at least one shifting facilitation projection by a distance that is equal to or smaller than two chain pitches.

公开(公告)号：US11492076B2

公开(公告)日：2022-11-08

申请号：US16711353

申请日：2019-12-11

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/10 ,  F16H55/30

Abstract: A bicycle sprocket having a rotational center axis, the bicycle sprocket comprises a sprocket body, a chain engagement structure, and a shifting facilitation projection. The chain engagement structure is arranged on a radially outer periphery of the sprocket body. The chain engagement structure includes a plurality of chain-driving teeth to engage with a bicycle chain to transmit a rotational driving force to the bicycle chain. The shifting facilitation projection is to facilitate an upshifting operation of the bicycle chain and to facilitate a downshifting operation of the bicycle chain.

公开(公告)号：US11440620B2

公开(公告)日：2022-09-13

申请号：US15933350

申请日：2018-03-22

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/02 ,  B62M9/00 ,  F16H55/30

Abstract: A bicycle sprocket comprises sprocket teeth. The sprocket teeth include at least one first tooth and at least one second tooth. The at least one first tooth has a first radial-tooth height. The at least one first tooth has a first chain-engaging axial width which is smaller than a first distance defined between opposed outer link plates of a bicycle chain and which is larger than a second distance defined between opposed inner link plates of the bicycle chain. The at least one second tooth is adjacent to the first tooth and is disposed on a downstream side in a rotational driving direction of the bicycle sprocket. The at least one second tooth is configured to engage with inner link plates of the bicycle chain. The at least one second tooth has a second radial-tooth height. The first radial-tooth height is greater than the second radial-tooth height.

公开(公告)号：US10562589B2

公开(公告)日：2020-02-18

申请号：US16026660

申请日：2018-07-03

Applicant: Shimano Inc.

Inventor： Akinobu Sugimoto ,  Yuki Hirose

IPC: B62M9/10 ,  F16H55/30 ,  B62M1/36

Abstract: A multiple bicycle rear sprocket assembly includes first and second sprockets. The first sprocket includes a plurality of first sprocket teeth. The first sprocket teeth include at least one first tooth having a first maximum axial width for engaging with an outer link plate of the chain, and at least one second tooth having a second maximum axial width for engaging with an inner link plate of the chain. The first maximum axial width is larger than the second maximum axial width. The second sprocket includes a plurality of second sprocket teeth. The second sprocket is smaller than the first sprocket. The second sprocket teeth have additional second teeth only. The additional second teeth are configured for engaging with the inner link plate of the chain. The first maximum axial width is larger than a maximum axial width of each of the additional second teeth.

公开(公告)号：US11097808B2

公开(公告)日：2021-08-24

申请号：US16395245

申请日：2019-04-26

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: B62M9/12 ,  F16H55/30

Abstract: A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, at least one shifting facilitation area, at least one driving facilitation area, and at least one bump portion. The at least one shifting facilitation area is to facilitate at least one of a first shifting operation in which a bicycle chain is shifted from the bicycle sprocket toward a smaller sprocket adjacent to the bicycle sprocket in an axial direction parallel to a rotational center axis of the bicycle sprocket without another sprocket between the bicycle sprocket and the smaller sprocket, and a second shifting operation in which the bicycle chain is shifted from the smaller sprocket toward the bicycle sprocket. The at least one bump portion is provided in the at least one driving facilitation area.

公开(公告)号：US10252773B2

公开(公告)日：2019-04-09

申请号：US15279178

申请日：2016-09-28

Applicant: Shimano Inc.

Inventor： Kenkichi Inoue ,  Akinobu Sugimoto

IPC: B62M9/00 ,  B62M9/10 ,  B62M9/135 ,  B62M9/136 ,  B62M9/137 ,  F16H55/30 ,  B62M9/1346

Abstract: A bicycle front derailleur is basically provided with a base member, a chain guide and a chain restricting abutment. The base member is configured to be mounted on a bicycle frame. The chain guide is configured to be movably coupled to the base member between a retracted position and an extended position to move a bicycle chain. The chain restricting abutment is configured to restrict the bicycle chain from moving in a radially outward direction of a rotational center axis of a bicycle front sprocket when the base member is mounted on the bicycle frame and the chain guide moves from the extended position toward the retracted position.

公开(公告)号：US20180312220A1

公开(公告)日：2018-11-01

申请号：US16026660

申请日：2018-07-03

Applicant: Shimano Inc.

Inventor： Akinobu Sugimoto ,  Yuki Hirose

IPC: B62M9/10 ,  F16H55/30 ,  B62M1/36

Abstract: A multiple bicycle rear sprocket assembly includes first and second sprockets. The first sprocket includes a plurality of first sprocket teeth. The first sprocket teeth include at least one first tooth having a first maximum axial width for engaging with an outer link plate of the chain, and at least one second tooth having a second maximum axial width for engaging with an inner link plate of the chain. The first maximum axial width is larger than the second maximum axial width. The second sprocket includes a plurality of second sprocket teeth. The second sprocket is smaller than the first sprocket. The second sprocket teeth have additional second teeth only. The additional second teeth are configured for engaging with the inner link plate of the chain. The first maximum axial width is larger than a maximum axial width of each of the additional second teeth.

公开(公告)号：US09964196B2

公开(公告)日：2018-05-08

申请号：US14283165

申请日：2014-05-20

Applicant: SHIMANO INC.

Inventor： Akinobu Sugimoto

IPC: F16H55/17 ,  B62M9/02 ,  F16H55/08 ,  B62M9/00

CPC classification number: F16H55/171 ,  B62M9/00 ,  B62M9/02 ,  F16H55/08

Abstract: A bicycle sprocket comprises sprocket teeth. The sprocket teeth include at least one first tooth and at least one second tooth. The at least one first tooth has a first radial-tooth height. The at least one first tooth has a first chain-engaging axial width which is smaller than a first distance defined between opposed outer link plates of a bicycle chain and which is larger than a second distance defined between opposed inner link plates of the bicycle chain. The at least one second tooth is adjacent to the first tooth and is disposed on a downstream side in a rotational driving direction of the bicycle sprocket. The at least one second tooth is configured to engage with inner link plates of the bicycle chain. The at least one second tooth has a second radial-tooth height. The first radial-tooth height is greater than the second radial-tooth height.