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公开(公告)号：US11078987B2
公开(公告)日：2021-08-03
申请号：US15672229
申请日：2017-08-08
Applicant: SHIMANO INC.
Inventor： Tsuyoshi Fukumori , Atsuhiro Emura
Abstract: A bicycle chain comprises a first inner link plate and a second inner link plate. The first inner link plate comprises a first inner-link end portion, a second inner-link end portion, and a first inner-link intermediate portion. The second inner link plate comprises a third inner-link end portion, a fourth inner-link end portion, and a second inner-link intermediate portion. A first inner-link end edge has a first chamfer extending about the first inner-link center axis such that a part of the first chamfer is disposed in a first circumferential area defined from a first inner-link longitudinal centerline to a first reference line when viewed in an axial direction of the first inner-link center axis. The first circumferential area is smaller than 14 degrees.
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公开(公告)号：US11028916B2
公开(公告)日：2021-06-08
申请号：US16131965
申请日：2018-09-14
Applicant: Shimano Inc.
Inventor： Yasufumi Fukunaga , Tsuyoshi Fukumori
Abstract: A bicycle sprocket includes a base body, a first sprocket tooth and a shifting initiation tooth. The first sprocket tooth includes a drive surface including a drive surface side tooth tip end portion, a non-drive surface including a non-drive surface side tooth tip end portion and a tooth tip portion connecting the drive surface side tooth tip end portion and the non-drive surface side tooth tip end portion. The non-drive surface extends circumferentially with respect to the rotational center axis from the non-drive surface side tooth tip end portion toward a first surface. The tooth tip portion extends circumferentially in a first direction between the drive surface side tooth tip end portion and the non-drive surface side tooth tip end portion. The non-drive surface extends circumferentially from the non-drive surface side tooth tip end portion in a second direction that is inclined with respect to the first direction.
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公开(公告)号：US10926836B2
公开(公告)日：2021-02-23
申请号：US15686113
申请日：2017-08-24
Applicant: SHIMANO INC.
Inventor： Hiroshi Fujita , Atsuhiro Emura , Yasufumi Fukunaga , Tsuyoshi Fukumori
Abstract: A bicycle rear sprocket assembly comprises a sprocket support and a first sprocket. The sprocket support includes a hub engagement part configured to engage with a bicycle hub assembly. The sprocket support includes a plurality of sprocket attachment members extending radially outwardly from the hub engagement part with respect to a rotational center axis of the bicycle rear sprocket assembly. The first sprocket is attached to the plurality of sprocket attachment members. The first sprocket includes a first sprocket body and a plurality of first sprocket teeth which extends radially outwardly from the first sprocket body with respect to the rotational center axis and a total number of which is equal to or larger than thirty-four. The first sprocket has a plurality of shifting facilitation areas. A total number of the plurality of shifting facilitation areas is a divisor of a total number of the plurality of sprocket attachment members.
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公开(公告)号：US20150292597A1
公开(公告)日：2015-10-15
申请号：US14250175
申请日：2014-04-10
Applicant: Shimano Inc.
Inventor： Tsuyoshi Fukumori
CPC classification number: F16G15/12 , B62M9/00 , B62M2009/005 , F16G13/06
Abstract: An outer link plate for a bicycle chain is provided. The outer link plate has an interior surface configured to face another counterpart outer link plate in an assembled state and an exterior surface opposite to the interior surface. The outer link plate has an outer perimeter, and first and second end portions including respective first and second openings each having corresponding parallel center axes. An intermediate portion is provided interconnecting the first end portion and the second end portion. The intermediate portion has an axially recessed portion formed along the outer perimeter on the exterior surface, the intermediate portion having a pair of intermediate edges formed along the outer perimeter, the axially recessed portion being formed on at least one of the intermediate edges and including a chamfered portion connecting the at least one of the intermediate edges to the exterior surface of the outer link plate.
Abstract translation: 提供了一种用于自行车链条的外链板。 外链板具有内表面，该内表面构造成在组装状态下与另一配对外链板相对，外表面与内表面相对。 外链板具有外周边，第一和第二端部包括各自具有对应的平行中心轴线的相应的第一和第二开口。 设置有互连第一端部和第二端部的中间部分。 中间部具有沿着外表面的外周形成的轴向凹部，中间部具有沿着外周形成的一对中间边缘，该轴向凹部形成在至少一个中间边缘上，并且包括一 将所述至少一个所述中间边缘连接到所述外链板的外表面的倒角部分。
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公开(公告)号：US20210070394A1
公开(公告)日：2021-03-11
申请号：US16563506
申请日：2019-09-06
Applicant: SHIMANO Inc.
Inventor： Tsuyoshi Fukumori
IPC: B62M9/122 , B62M25/08 , B62M9/1248
Abstract: A bicycle derailleur comprises a base member, a movable member, a pulley assembly, a rotational-force adjustment structure, an electric actuator, and a controller. The rotational-force adjustment structure is at least partly disposed between the movable member and the pulley assembly so as to apply resistance to rotation of the pulley assembly relative to the movable member. The electric actuator is configured to operate the rotational-force adjustment structure. The controller is configured to control the electric actuator based on a driving-force related information.
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Patent Agency Ranking
公开(公告)号：US10794452B2
公开(公告)日：2020-10-06
申请号：US15946733
申请日：2018-04-06
Applicant: SHIMANO INC.
Inventor： Tsuyoshi Fukumori
Abstract: A bicycle chain comprises an inner link plate. The inner link plate comprises a first inner-link end portion, a second inner-link end portion, an inner-link intermediate portion, a first chromized layer, and a second chromized layer. The first inner-link end portion includes a first inner-link opening and a first axially extending surface. The second inner-link end portion includes a second inner-link opening and a second axially extending surface. The first chromized layer has a first maximum axially chromized-treatment length defined in the first axially extending surface in an axial direction. The second chromized layer has a second maximum axially chromized-treatment length defined in the second axially extending surface in the axial direction. Each of the first maximum axially chromized-treatment length and the second maximum axially chromized-treatment length is equal to or larger than 1.1 mm.
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公开(公告)号：US10703439B2
公开(公告)日：2020-07-07
申请号：US15493089
申请日：2017-04-20
Applicant: SHIMANO INC.
Inventor： Tsuyoshi Fukumori
Abstract: A bicycle sprocket comprises a sprocket body and a plurality of sprocket teeth provided on an outer periphery of the sprocket body and including at least one first tooth and at least one second tooth. The at least one first tooth has a driving surface side and a non-driving surface side. The at least one first tooth has a bevel cut shape in the non-driving surface side. The bevel cut shape is configured to avoid initially engaging with a bicycle chain in a shifting operation where the bicycle chain shifts from an adjacent smaller bicycle sprocket to the bicycle sprocket. The at least one second tooth is configured to initially engage with the bicycle chain in the shifting operation. The at least one second tooth is disposed adjacent to the at least one first tooth in a circumferential direction with respect to a rotational center axis of the bicycle sprocket.
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公开(公告)号：US10648538B2
公开(公告)日：2020-05-12
申请号：US15719570
申请日：2017-09-29
Applicant: SHIMANO INC.
Inventor： Kenichi Akanishi , Atsuhiro Emura , Yuta Mizutani , Tsuyoshi Fukumori
Abstract: A bicycle-chain outer link plate comprises a first outer-link end portion, a second outer-link end portion, and a first outer-link intermediate portion. The first outer-link end portion comprises a first outer-link opening and a first outer-link end outermost edge. The second outer-link end portion comprises a second outer-link opening and a second outer-link end outermost edge. The first outer-link intermediate portion comprises a first outer-link intermediate outermost edge and a first additional outer-link intermediate outermost edge. The first outer-link intermediate portion has a first distance defined in an axial direction on a first outer-link longitudinal axis. The first outer-link intermediate outermost edge has a second distance defined in the axial direction. The first outer-link end outermost edge has a third distance defined in the axial direction. The first distance is larger than the second distance and the third distance. The second distance is larger than the third distance.
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公开(公告)号：US10480617B2
公开(公告)日：2019-11-19
申请号：US15672232
申请日：2017-08-08
Applicant: SHIMANO INC.
Inventor： Tsuyoshi Fukumori , Atsuhiro Emura
Abstract: A bicycle chain comprises a first outer link plate. The first outer link plate comprises a first outer-link end portion, a second outer-link end portion, a first outer-link intermediate portion, and a first outer-link longitudinal centerline. The first outer-link end portion, the second outer-link end portion and the first outer-link intermediate portion define a first outer-link outer peripheral edge. The first outer-link outer peripheral edge comprises a first outer-link end edge, a second outer-link end edge, and a pair of first outer-link intermediate edges. A first radial distance is defined from a first outer-link center axis to the first outer-link end edge in a perpendicular direction. A minimum distance is defined between the pair of first outer-link intermediate edges in the perpendicular direction. The minimum distance is smaller than 200% of the first radial distance and is equal to or larger than 5 mm.
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公开(公告)号：US09939045B2
公开(公告)日：2018-04-10
申请号：US15212153
申请日：2016-07-15
Applicant: Shimano Inc.
Inventor： Tsuyoshi Fukumori
CPC classification number: F16G13/06
Abstract: A link plate for a bicycle chain is basically provided with a first link end portion, a second link end portion and a link intermediate portion interconnecting the first link end portion and the second link end portion. The first link end portion includes a first link opening having a first link center axis. The second link end portion includes a second link opening having a second link center axis parallel to the first link center axis. The link plate has a link longitudinal centerline defining a longitudinal direction. The first link end portion has a first extended edge portion extending away from the second link end portion in the longitudinal direction or the link intermediate portion has an axial protrusion protruding from an inner surface thereof in the axial direction.
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