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公开(公告)号：US20120196709A1
公开(公告)日：2012-08-02
申请号：US13363646
申请日：2012-02-01
申请人： Yuji Kurematsu , Munehiro Maeda , Osamu Yoshida , Akira Ishii , Toyonaga Saitoh
发明人： Yuji Kurematsu , Munehiro Maeda , Osamu Yoshida , Akira Ishii , Toyonaga Saitoh
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner 100 is arranged so that the spring stopping washer has a C-ring anchored in the rear-end area of the ratchet-receiving hole by fitting in a diameter-reduced state and by enlarging its diameter within an anchoring circumferential groove of the ratchet-receiving hole and a spring stopping piece extended from the C-ring to a ring center area to seat the ratchet biasing spring.
摘要翻译： 提供了一种棘轮式张紧器，其弹簧止动垫圈用于安置棘轮偏压弹簧，刚性且容易地组装到棘轮接收孔，以便不会从棘轮接收孔中脱落，并且可以减少颤动噪声并防止 该活塞通过在操作发动机中可靠且稳定地操作棘轮机构。 棘轮式张紧器100被布置成使得弹簧止动垫圈具有通过配合直径减小状态而锚定在棘轮容纳孔的后端区域中的C形环，并且通过将其直径扩大到锚定周向槽内 的棘轮接收孔和从C形环延伸到环形中心区域的弹簧止动件以安置棘轮偏置弹簧。
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公开(公告)号：US20120122619A1
公开(公告)日：2012-05-17
申请号：US13277495
申请日：2011-10-20
申请人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda
发明人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853
摘要： In a ratchet tensioner, rack teeth on a plunger are engaged by ratchet teeth on one end of a movable plug that slides in a hole in the tensioner housing along a direction orthogonal of the direction of movement of the plunger. The movable plug is prevented from rotating in the hole in which it slides so that the ratchet teeth engage the rack teeth on the plunger smoothly and reliably.
摘要翻译： 在棘轮张紧器中，柱塞上的齿条齿通过可动塞的一端上的棘齿啮合，该可动塞的一端沿着与活塞的运动方向正交的方向在张紧器壳体中的孔中滑动。 可动塞被阻止在其滑动的孔中旋转，使得棘齿平滑且可靠地与柱塞上的齿条啮合。
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公开(公告)号：US09062741B2
公开(公告)日：2015-06-23
申请号：US13409592
申请日：2012-03-01
申请人： Yuji Kurematsu , Kaori Mori , Munehiro Maeda , Osamu Yoshida
发明人： Yuji Kurematsu , Kaori Mori , Munehiro Maeda , Osamu Yoshida
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H7/08 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： A ratchet-type tensioner, comprising: a housing; a plunger supported by the housing for movement in opposite advancing and setback directions, the plunger having rack teeth provided thereon, and being arranged to advance with respect to the housing along the advancing direction for applying tension to a traveling transmission medium engaged with rotating members; and a ratchet mechanism capable of restricting the plunger from setting back due to a reaction force acting in a setback direction from the transmission medium; said ratchet mechanism comprising: a ratchet-receiving hole provided within the housing; a ratchet element slidable in the ratchet-receiving hole and movable in a sliding direction transverse to the advancing and setback directions; ratchet teeth on the ratchet element engageable with the rack teeth of the plunger; and a ratchet-biasing means for biasing the ratchet element in an engaging direction along the sliding direction so that the ratchet teeth engage with the rack teeth; said ratchet mechanism being capable of restricting the plunger from being set back by a reaction force acting in a setback direction from the transmission medium; said rack teeth having a concave-convex form and being composed of stop surfaces facing in the setback direction and sliding surfaces facing in the advance direction, said sliding surfaces being inclined relative to the sliding direction and facing in a disengaging direction opposite from the engaging direction; each of said sliding surfaces having an entry starting location which the ratchet teeth first engage when starting to enter the rack teeth, and an entry ending location where the engagement of the ratchet teeth with the rack teeth ends; each said sliding surface being a curved surface, all of said curved surface, between said entry starting location and said entry ending location of said sliding surface, bulging in the advancing direction of the plunger and in the disengaging direction of the ratchet element from an imaginary reference plane intersecting said entry starting location and said entry ending location of said sliding surface and perpendicular to another imaginary plane to which the advancing and setback direction of the plunger and the sliding direction of the ratchet element are parallel; and at least a part of said curve midway along said curve between the entry starting location and the entry ending location is convex.
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公开(公告)号：US5800456A
公开(公告)日：1998-09-01
申请号：US874879
申请日：1997-06-13
CPC分类号： A61F2/88 , A61F2002/30462 , A61F2220/0075 , A61F2310/00017
摘要： A self-expanding endovascular stent formed of stainless steel wire which is bent into an elongated zigzag pattern. The zigzag pattern has a plurality of substantially straight wire sections of various lengths separating a plurality of bends. The zigzag pattern is helically wound about a central axis to define a tubular shape such that a majority of the bends are disposed in a helix. Adjacent bends in the helix are interconnected with a filament. The stent is capable of being radially compressed such that the straight wire sections and the bends are tightly packed around a central axis. The stent resiliently self-expands to assume a tubular shape when released from the compressed state. Depending on the pattern of the lengths of the straight wire sections in the zigzag pattern, the final tubular shape can be made irregular to match a patient's vascular system. In other words, the diameter of the tube which is defined by the stent can be made to vary along the length of the stent. Stents of the present invention are used to expand a passageway, hold a passageway open, or create a passageway.
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公开(公告)号：US5507767A
公开(公告)日：1996-04-16
申请号：US821477
申请日：1992-01-15
CPC分类号： A61F2/88 , A61F2002/30462 , A61F2220/0075 , A61F2310/00017
摘要： A self-expanding endovascular stent formed of stainless steel wire which is bent into an elongated zigzag pattern. The zigzag pattern has a plurality of substantially straight wire sections of various lengths separating a plurality of bends. The zigzag pattern is helically wound about a central axis to define a tubular shape such that a majority of the bends are disposed in a helix. Adjacent bends in the helix are interconnected with a filament. The stent is capable of being radially compressed such that the straight wire sections and the bends are tightly packed around a central axis. The stent resiliently self-expands to assume a tubular shape when released from the compressed state. Depending on the pattern of the lengths of the straight wire sections in the zigzag pattern, the final tubular shape can be made irregular to match a patient's vascular system. In other words, the diameter of the tube which is defined by the stent can be made to vary along the length of the stent. Stents of the present invention are used to expand a passageway, hold a passageway open, or create a passageway.
摘要翻译： 由不锈钢线形成的自扩张型血管内支架，其弯曲成细长的之字形图案。 锯齿形图案具有分离多个弯曲部的各种长度的多个基本上直的线段。 锯齿形图案围绕中心轴线螺旋缠绕以限定管状形状，使得大部分弯曲部以螺旋状设置。 螺旋中的相邻弯曲与细丝相互连接。 支架能够被径向压缩，使得直线部分和弯曲部紧密地围绕中心轴线包装。 当从压缩状态释放时，支架弹性地自膨胀以呈现管状形状。 根据锯齿形图案中的直线部分的长度的图案，可以使最终的管状形状不规则以匹配患者的血管系统。 换句话说，由支架限定的管的直径可以沿着支架的长度变化。 本发明的支架用于扩张通道，保持通道打开或创建通道。
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公开(公告)号：US20120309570A1
公开(公告)日：2012-12-06
申请号：US13477345
申请日：2012-05-22
申请人： Yuji Kurematsu , Osamu Yoshida , Munehiro Maeda , Akira Ishii
发明人： Yuji Kurematsu , Osamu Yoshida , Munehiro Maeda , Akira Ishii
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0855 , F16H2007/0859 , F16H2007/0893
摘要： In a ring-type tensioner, an expansible elastic ring disposed in a groove formed in the wall of a plunger-accommodating hole cooperates with teeth formed on the plunger to restrict axial movement of the plunger. The ring and the groove in the wall of the plunger-accommodating hole have flat radial surfaces for mutual engagement. However the ring also has oblique plunger-tooth engaging surfaces. The ring has manipulable end parts that can be locked in fixed relation to each other by a tool to secure the plunger against axial movement. The tool can also be inserted into a gap between the manipulable end parts to expand the ring and thereby release the plunger.
摘要翻译： 在环形张紧器中，设置在形成在柱塞容纳孔的壁中的槽中的可膨胀弹性环与形成在柱塞上的齿配合以限制柱塞的轴向运动。 柱塞容纳孔的壁中的环和槽具有相互接合的平坦的径向表面。 然而，该环也具有倾斜的柱塞 - 齿啮合表面。 环具有可操纵的端部，其可以通过工具彼此固定地相互锁定，以将柱塞固定在轴向运动上。 工具也可以插入到可操纵的端部之间的间隙中以使环膨胀，从而释放柱塞。
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公开(公告)号：US20120244975A1
公开(公告)日：2012-09-27
申请号：US13409592
申请日：2012-03-01
申请人： Yuji Kurematsu , Kaori Mori , Munehiro Maeda , Osamu Yoshida
发明人： Yuji Kurematsu , Kaori Mori , Munehiro Maeda , Osamu Yoshida
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H7/08 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： A ratchet mechanism of the ratchet tensioner comprises a toothed ratchet element slidable in a housing and movable in a sliding direction, a plunger movable in an advance/setback direction and having rack teeth engageable by the teeth of the ratchet element, and a ratchet-biasing spring for biasing the ratchet element so that its teeth engage the rack teeth. The rack teeth have stop surfaces facing in the setback direction and sliding surfaces facing the advancing direction. The sliding surfaces are curved surfaces bulging in the advancing direction and in the direction of disengagement of the ratchet element from the rack teeth, the bulge being in an area extending from an entry starting location to an entry ending location.
摘要翻译： 棘轮张紧器的棘轮机构包括可在壳体中滑动并可在滑动方向上移动的齿形棘轮元件，柱塞可在提前/倒退方向上移动并且具有可由棘轮元件的齿啮合的齿条齿轮和棘轮偏置 弹簧用于偏压棘轮元件，使其齿接合齿条齿。 齿条齿具有面向倒退方向的止动表面和面向前进方向的滑动表面。 滑动表面是在前进方向和棘齿元件与齿条齿分离的方向上凸出的弯曲表面，凸起位于从进入开始位置延伸到入口终点位置的区域中。
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公开(公告)号：US20120225743A1
公开(公告)日：2012-09-06
申请号：US13401160
申请日：2012-02-21
申请人： Akira Ishii , Munehiro Maeda , Osamu Yoshida , Yuji Kurematsu
发明人： Akira Ishii , Munehiro Maeda , Osamu Yoshida , Yuji Kurematsu
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： A ratchet-type tensioner capable of restricting setback of a plunger includes a ratchet mechanism that allows setback of the plunger by sliding a ratchet element in a disengaging direction to disengage ratchet teeth from rack teeth when a reaction force acts on the plunger as a result of excessive chain tension. The ratchet element is slidable in a ratchet-receiving hole, and an inclination suppressing structure that prevents the ratchet element from becoming skewed in the ratchet receiving hole to an extent such that its forward end contacts one side of the hole while its rearward end contacts the opposite sides of the hole.
摘要翻译： 能够限制柱塞的棘爪的棘轮式张紧器包括棘轮机构，其通过在棘爪元件沿分离方向滑动以使得棘爪齿与齿条齿脱离，从而当反作用力作用在柱塞上时由于作用 链条张力过大 棘轮元件可在棘轮接收孔中滑动，并且该倾斜抑制结构防止棘轮元件在棘轮接收孔中歪斜到一定程度，使得其前端接触孔的一侧，同时其后端接触 孔的对面。
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公开(公告)号：US08821326B2
公开(公告)日：2014-09-02
申请号：US13474792
申请日：2012-05-18
申请人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
发明人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： In a ratchet-type tensioner having a plunger with rack teeth formed thereon and a piston with ratchet teeth that engage the rack teeth, the ratchet teeth can be disengaged from the rack teeth by insertion of a tool through a tool insertion hole in the tensioner housing and exerting a prying action on the toothed end of the piston to move the piston away from the plunger. Alternatively if an oblique camming surface is formed on the toothed end of the piston, the ratchet teeth can be disengaged from the rack teeth by pushing the tool inward against the oblique camming surface. The piston and the hole in which it slides are shaped to prevent rotation of the piston. The ratchet teeth on the piston and the rack teeth on the plunger can be oblique to allow setback of the plunger when excessive force is exerted on the plunger.
摘要翻译： 在具有形成有齿条齿的柱塞的棘轮式张紧器和具有与齿条齿接合的棘轮齿的活塞的棘轮式张紧器中，通过将工具插入到张紧器壳体中的工具插入孔中，棘轮齿可以与齿条齿脱离 并且在活塞的齿端上施加撬动作用以将活塞移离柱塞。 或者，如果在活塞的齿端上形成倾斜的凸轮表面，则可以通过将工具向内推靠在倾斜凸轮表面上而将棘轮齿与齿条齿脱离。 活塞及其滑动的孔被成形以防止活塞旋转。 活塞上的棘齿和柱塞上的齿条齿可以倾斜，以便在柱塞上施加过大的力时允许柱塞的遏制。
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公开(公告)号：US08740736B2
公开(公告)日：2014-06-03
申请号：US13477345
申请日：2012-05-22
申请人： Yuji Kurematsu , Osamu Yoshida , Munehiro Maeda , Akira Ishii
发明人： Yuji Kurematsu , Osamu Yoshida , Munehiro Maeda , Akira Ishii
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0855 , F16H2007/0859 , F16H2007/0893
摘要： In a ring-type tensioner, an expansible elastic ring disposed in a groove formed in the wall of a plunger-accommodating hole cooperates with teeth formed on the plunger to restrict axial movement of the plunger. The ring and the groove in the wall of the plunger-accommodating hole have flat radial surfaces for mutual engagement. However the ring also has oblique plunger-tooth engaging surfaces. The ring has manipulable end parts that can be locked in fixed relation to each other by a tool to secure the plunger against axial movement. The tool can also be inserted into a gap between the manipulable end parts to expand the ring and thereby release the plunger.
摘要翻译： 在环形张紧器中，设置在形成在柱塞容纳孔的壁中的槽中的可膨胀弹性环与形成在柱塞上的齿配合以限制柱塞的轴向运动。 柱塞容纳孔的壁中的环和槽具有相互接合的平坦的径向表面。 然而，该环也具有倾斜的柱塞 - 齿啮合表面。 环具有可操纵的端部，其可以通过工具彼此固定地相互锁定，以将柱塞固定在轴向运动上。 工具也可以插入到可操纵的端部之间的间隙中以使环膨胀，从而释放柱塞。
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