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公开(公告)号：US11572135B2
公开(公告)日：2023-02-07
申请号：US17242036
申请日：2021-04-27
申请人： Praxis Works LLC
IPC分类号： B62M9/136 , B62M25/08 , B62M9/1342
摘要： A gearbox may include a drive spindle and several interconnected gear clusters arranged in a housing. A first of the gear clusters is coaxially fastened to the spindle, and has an outboard gear and an inboard gear. The first gear cluster drives a belt or chain to operate one or more of the other gear clusters, and the inboard gear is physically divided into a plurality of segments. A shifting system for the gearbox includes an actuator configured to urge the segments of the inboard gear of the first gear cluster into and out of the plane of the belt or chain via a toggle and slider mechanism, such that a gear ratio of the gearbox is changeable without displacing the belt or chain out of the plane.
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公开(公告)号：US20160272002A1
公开(公告)日：2016-09-22
申请号：US14923343
申请日：2015-10-26
申请人： Praxis Works LLC
发明人： David M. Earle , Ding-Jiun Lin
CPC分类号： B21D53/86 , B21D53/26 , B21D53/28 , B23K2101/00 , B60B1/003 , B60B1/041 , B60B1/042 , B60B27/0026 , B60B27/023 , B60B27/047 , B60B31/005 , B62M9/10 , Y10T29/49462 , Y10T29/49465 , Y10T29/49481 , Y10T29/49506
摘要： A bicycle wheel assembly may include a cassette having a plurality of sprocket portions, the cassette being configured such that a cavity or recess is formed in a large end of the cassette. A wheel hub coupled to the cassette may include a spoke connection flange that is disposed at least partially within the cavity of the cassette, facilitating a more acute spoke angle.
摘要翻译： 自行车车轮组件可以包括具有多个链轮部分的盒，所述盒被构造成使得在盒的大端部中形成空腔或凹部。 联接到盒的轮毂可以包括至少部分地设置在盒的空腔内的轮辐连接凸缘，从而有助于更尖锐的辐角。
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3.发明公开公开(公告)号：US20240101223A1
公开(公告)日：2024-03-28
申请号：US18325859
申请日：2023-05-30
申请人： Praxis Works LLC
发明人： Gregor SCHUSTER
摘要： A control device for controlling a transmission ratio between a traction means and a sprocket set rotatable about an axle may include at least two sprockets alternatively wrapped around by the traction means. At least one of the sprockets may include several independently adjustable rim segments. Adjustment of the rim segments in relation to a fixed plane may be effected by a control device in a direction substantially transverse to the plane. The control device includes at least one electrically actuatable control element, e.g., a servomotor. The at least one control element is configured to rotate with the sprockets.
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公开(公告)号：US11661145B2
公开(公告)日：2023-05-30
申请号：US16384485
申请日：2019-04-15
申请人： Praxis Works LLC
发明人： Gregor Schuster
摘要： A control device for controlling a transmission ratio between a traction means and a sprocket set rotatable about an axle may include at least two sprockets alternatively wrapped around by the traction means. At least one of the sprockets may include several independently adjustable rim segments. Adjustment of the rim segments in relation to a fixed plane may be effected by a control device in a direction substantially transverse to the plane. The control device includes at least one electrically actuatable control element, e.g., a servomotor. The at least one control element is configured to rotate with the sprockets.
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公开(公告)号：US11541963B2
公开(公告)日：2023-01-03
申请号：US16922401
申请日：2020-07-07
申请人： Praxis Works LLC
发明人： Gregor Schuster
IPC分类号： B62M9/1342 , B62M9/12 , B62M9/124
摘要： The present disclosure describes a gearshift mechanism for adjusting a gear ratio between a traction means, such as a chain, and a multi-sprocket gear set which can be rotated around an axle. The gearshift mechanism is configured to move the traction means in relation to the sprockets, such that an adjustment element is moved into the rolling motion of the traction means, thereby causing movement off of one sprocket and movement onto another sprocket.
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公开(公告)号：US20200377174A1
公开(公告)日：2020-12-03
申请号：US16998010
申请日：2020-08-20
申请人： Praxis Works LLC
发明人： David ALLEN , David M. EARLE , Kyle BENNETT , William A. HILGENBERG , Rainer POKORNY , Ryan Kent MILLER
摘要： A gearbox may include a drive spindle and several interconnected gear clusters arranged in a housing. A first of the gear clusters is coaxially fastened to the spindle, and has an outboard gear and an inboard gear. The first gear cluster drives a belt to operate one or more of the other gear clusters, and the inboard gear is physically divided into a plurality of segments. A shifting system for the gearbox includes an actuator configured to urge the segments of the inboard gear of the first gear cluster into and out of the plane of the belt, such that a gear ratio of the gearbox is changeable without displacing the belt out of the plane.
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公开(公告)号：US20200263767A1
公开(公告)日：2020-08-20
申请号：US16792050
申请日：2020-02-14
申请人： Praxis Works LLC
摘要： A gearbox may include a drive spindle and several interconnected gear clusters arranged in a housing. A first of the gear clusters is coaxially fastened to the spindle, and has an outboard gear and an inboard gear. The first gear cluster drives a chain to operate one or more of the other gear clusters, and the inboard gear is physically divided into a plurality of segments. A shifting system for the gearbox includes an actuator configured to urge the segments of the inboard gear of the first gear cluster into and out of the plane of the chain, such that a gear ratio of the gearbox is changeable without displacing the chain out of the plane.
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公开(公告)号：US20130230266A1
公开(公告)日：2013-09-05
申请号：US13868585
申请日：2013-04-23
申请人： PRAXIS WORKS LLC
发明人： David M. EARLE , Chin T. CHUANG
IPC分类号： B60B27/00
CPC分类号： B60B27/0005 , B60B27/0078 , B62K19/34 , B62M3/003 , Y10T29/49696
摘要： An improved bicycle bottom bracket system and methods of manufacturing and installing such a system. The improved system may include bearings mounted within bearing cups on either side of the bottom bracket shell of a bicycle frame. The bearing cups may be threaded together, and one bearing cup may include a collet portion expandable by the other bearing cup.
摘要翻译： 改进的自行车底托系统以及制造和安装这种系统的方法。 改进的系统可以包括安装在自行车车架的底部支架壳体的任一侧的轴承杯内的轴承。 轴承杯可以被拧在一起，并且一个轴承杯可以包括由另一轴承杯可膨胀的夹头部分。
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公开(公告)号：US12097929B2
公开(公告)日：2024-09-24
申请号：US18165880
申请日：2023-02-07
申请人： Praxis Works LLC
发明人： David Allen , David M. Earle , Kyle Bennett , William A. Hilgenberg , Rainer Pokorny , Ryan Kent Miller
摘要： A gearbox may include a drive spindle and several interconnected gear clusters arranged in a housing. A first of the gear clusters is coaxially fastened to the spindle, and has an outboard gear and an inboard gear. The first gear cluster drives a belt to operate one or more of the other gear clusters, and the inboard gear is physically divided into a plurality of segments. A shifting system for the gearbox includes an actuator configured to urge the segments of the inboard gear of the first gear cluster into and out of the plane of the belt, such that a gear ratio of the gearbox is changeable without displacing the belt out of the plane.
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公开(公告)号：US12060135B2
公开(公告)日：2024-08-13
申请号：US18165884
申请日：2023-02-07
申请人： Praxis Works LLC
IPC分类号： B62M9/14 , B62M9/10 , B62M9/1342 , B62M9/136 , B62M25/08
CPC分类号： B62M9/14 , B62M9/1342 , B62M9/136 , B62M25/08 , B62M9/10
摘要： A gearbox may include a drive spindle and several interconnected gear clusters arranged in a housing. A first of the gear clusters is coaxially fastened to the spindle, and has an outboard gear and an inboard gear. The first gear cluster drives a belt or chain to operate one or more of the other gear clusters, and the inboard gear is physically divided into a plurality of segments. A shifting system for the gearbox includes an actuator configured to urge the segments of the inboard gear of the first gear cluster into and out of the plane of the belt or chain via a toggle and slider mechanism, such that a gear ratio of the gearbox is changeable without displacing the belt or chain out of the plane.
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