CN101410287A - 婴儿车刹车系统 - Google Patents
婴儿车刹车系统 Download PDFInfo
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- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
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- B62B7/044—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor three wheeled
Abstract
提供一种婴儿车(100),其具有把手(170)和由至少一个轮子支撑的婴儿车框架(102)。把手(170)包括与轮子上的刹车组件(202)连接的刹车操作器(204)。刹车操作器(204)可以在刹车组件(202)与轮子脱离接合的第一位置和刹车组件(202)与轮子接合以减缓轮子运动的第二位置之间移动。
Description
相关申请资料
本申请要求于2006年4月3日提交的美国临时专利申请N0.60/789,240的优先权,该临时申请的全部内容并入本文以供参考。
技术领域
本发明大体上涉及婴儿车,尤其是涉及婴儿车的刹车系统。
背景技术
设计较好的婴儿车应当坚固且平衡,应当为小孩乘客提供安全和舒适的运输。在婴儿车的发展过程中,一直致力于包括使婴儿车通用和便利的特征。已经做了努力来提供这些特征,同时获得简化的设计,但仍保持了婴儿车的耐用性和可靠性。
传统的婴儿车具有多个支撑框架的轮子,所述框架支撑一个或多个婴儿车座位。框架具有两个间隔开的前腿、两个间隔开的后腿、一个或多个推杆和在横向外端连接到推杆上的横杆。横杆可具有一对横向间隔开的抓握面和设在这两个抓握面之间的把手组件,当看护者驱动婴儿车时看护者可抓握所述抓握面。
一些传统的婴儿车具有的刹车系统能使看护者锁紧至少其中一个轮子,以防止婴儿车沿地面滚动。刹车系统包括致动器,可用看护者的脚或手来移动该致动器,从而使刹车构件与至少其中一个轮子互锁,以防止轮子转动。被锁住的轮子和地面之间的摩擦力防止婴儿车易于沿地面移动。遗憾地是,手操作的刹车系统要求看护者从婴儿车把手上至少移开一只手。脚操作的刹车系统要求看护者把注意力从小孩和周围环境分散开。而且,传统的刹车系统笨拙且不便于操作。
因此,所需要的是一种相对于传统的婴儿车刹车系统而言易于接近和操作的婴儿车刹车系统。
发明内容
根据本发明的一个方面,提供一种婴儿车,其具有由至少一个可转动的轮子支撑的婴儿车框架。把手连接到婴儿车框架上。把手包括可在第一制动位置和第二释放位置之间移动的刹车操作器。刹车组件由婴儿车框架支撑且操作性地与轮子相连。传动机构操作性地将刹车操作器和刹车组件相连。把手向制动位置的移动使得刹车组件减缓轮子的运动。
应当知道的是,从下面的描述中将看出本发明的前述和其它方面。在描述中,参考了形成本说明书一部分的附图,附图通过示例性但非限制性的方式示出本发明的优选实施例。这些实施例不一定代表本发明的完整范围,因此必须参考权利要求来解释本发明的完整范围。
附图说明
通过阅读下面结合附图的描述,本发明的目的、特征和优点将变得明显,其中:
图1是根据本发明原理构建的示例性婴儿车的透视图;
图2是婴儿车框架的透视图,其中座位组件被移去以示出根据本发明原理构造的刹车系统,该刹车系统具有刹车操作器、传动机构和刹车组件;
图3是婴儿车框架一部分的示意性前视图,一些部分被切掉以示出传动机构;
图4是婴儿车框架的刹车操作器和把手的分解装配图;
图5是与把手连接的刹车操作器的截面侧视图;
图6是与传动机构连接的把手的透视图;
图7是与传动机构连接的刹车操作器和把手的部分装配图;
图8是示意性示出刹车操作器的操作的透视图;
图9是被刹车系统接合的婴儿车轮子的透视图;
图10是刹车系统的截面侧视图;
图11是根据替代实施例构造的刹车系统的截面侧视图;
图12A是类似于图2示出的但具有根据替代实施例构造的刹车系统的婴儿车框架的透视图;和
图12B是图12A中示出的传动机构的一部分的透视图。
具体实施方式
公开的婴儿车改善了现有技术中上述的一个或多个问题和/或缺点。例如,该婴儿车包括框架,该框架由至少一个轮子支撑以便沿着地面移动。婴儿车框架包括把手,该把手用于被看护者抓住以推动和操纵婴儿车。该框架还具有包括刹车操作器的刹车系统,所述刹车操作器能够被看护者致动以锁住和解锁刹车组件,该刹车组件可操作以选择地减缓或防止婴儿车轮子的移动。刹车系统还包括操作性地将刹车操作器与刹车组件相连的传动机构。有利地,刹车操作器被把手支承,并能够被定位成易于被看护者接近,而不用从把手上移开两只手,也不用把注意力从小孩和周围环境分散开。
现在看附图,图1-2中示出了婴儿车100,其是根据本发明的教导构造的。在公开的例子中,婴儿车100通常具有婴儿车框架102、由框架102支撑的座位组件104和多个将框架102支撑在地面上的轮子。通常,在公开的例子中框架102包括一对后轮106和布置在后轮前面且处于后轮之间中点的单个前轮组件108。在这个例子中,前轮组件具有并排隔开的两个轮子109。两个轮子109经由支撑130与脊柱140相连,该支撑130以常规方式枢转地连接到脊柱下端142,以便前轮组件108的角定向能改变以使婴儿车的转向变得容易,这些对于本领域技术人员来说是知道的。
在这个例子中,框架102通常具有座位安装框架110,其为U形部件。在公开的例子中,座位组件104能从座位框架110和婴儿车100上拆除。通常,可拆除的座位组件104包括一对设在乘坐者座位114的相对侧上的座位连接管112。这两个座位管112连接到座位框架110的上端116并能从其上拆除。座位组件104的座位114至少部分地由座位管112支撑在婴儿车上,并且具有连接到座位上部的遮蓬118。座位114还具有座位靠背120、座位底部122以及设在座位靠背和座位底部的相对侧上的座位侧翼124。
在这个例子中,搁脚板126设置在座位组件104的底部,并且通过网孔织物板128吊挂在座位底部122的前缘上。搁脚板126还连接到座位框架110的下部。在公开的例子中,座位104能够完全由织物或类似的材料制成,并且安装好时吊挂在座位管112和座位框架110上。可选择地,座位组件104的各部分可具有放在通常刚性的支撑结构上方的可拆除盖子,该支撑结构限定和成形座位的至少一部分,例如座位底部122和座位侧翼124的一些部分。因此,一旦连接到座位框架110上,座位组件104能够充分地被支撑在婴儿车上,并且基本上足以支撑小孩乘坐者的重量。对本领域的技术人员来说将显而易见的是,座位组件104和座位114的配置和结构能够被显著地改变,但仍落在本发明的精神和范围内。
在公开的例子中,婴儿车框架102通常具有中央脊柱140,其下端142位于前轮组件108附近。脊柱140还具有位于座位组件114的座位靠背120后面并处于两个后轮106之间的上端144。一对弯曲的后腿146从脊柱140的下侧朝相反的方向向下延伸。每个腿146向外弯曲并在向后向下的方向延伸。每个腿146的近端或顶端148连结到设在脊柱140下侧的后腿连接器150上。在这个例子中,连接器150设在脊柱140的上端144和下端142之间的中点附近。在这个例子中,每个后腿146的远端或下端152支撑后轮106中的一个。
后腿连杆154设在框架102的每一侧上,并且将每个后腿146连接到脊柱40上。每个连杆154具有连接到位于脊柱140下侧的连接器158上的一个端部156,该连接器158沿脊柱设在后腿连接器150下面。每个连杆154还具有连接到相应一个后腿146上的另一端部160。在使用过程中,连杆154为婴儿车框架102特别是为后腿146提供稳定性。
这里公开的婴儿车100还具有一对弯曲的座位框架支撑臂180。支撑臂180从脊柱140的顶侧朝相反方向向上延伸。每个支撑臂180向外弯曲,并相对于脊柱140向前向上延伸。每个支撑臂180的近端或底端182连接到设置在脊柱140顶侧的支撑臂连接器184。在这个例子中,支撑臂连接器184沿脊柱设在与后腿连接器150相同的位置上,所述后腿连接器150在脊柱的下侧。每个支撑臂180的远端部分186向下弯曲,通常水平地向前弯曲,并终止于暴露的端部或表面188。
在这个例子中,座位框架连杆190设在座位框架110的每一侧上,并向后延伸。每个座位连杆190连接到一个支撑臂180上。在这个例子中,每个座位连杆190与相应支撑臂180之间的连接点沿着远端部分186向后与暴露的端部188隔开。
同样在公开的例子中,框架支架194位于框架102的前下部。框架支架194连接到座位框架110的最下部196和脊柱140的下端142上。前轮组件108安装到框架支架194上并向下延伸。在公开的例子中,框架支架194将脊柱140连接到座位框架110上,并提供前轮的安装位置。
脊柱140在两个后轮106之间中心定向,并限定婴儿车100的中心轴线或纵向轴线。在图1和2中示出的公开的例子中,脊柱140成角度定向,其中,低点在其下端142上,高点在其上端144。
在公开的例子中,框架102还具有能被看护者抓住用来推动和操纵婴儿车100的婴儿车把手170。把手170包括抓握面,该抓握面可包括用户舒适地接触的橡胶或其它弹性体材料。公开的把手170通常具有朝上的、形成两个把手部分172的打开的C形。这两个部分172从把手支架174朝相反方向延伸。把手支架174连接到从框架脊柱140的上端144延伸的支柱176上。在公开的例子中,支柱176基本上是线性结构,平行于脊柱140延伸并与脊柱140对齐,所述脊柱140通常也是线性结构。
脊柱140被定向以定位把手170,以致看护者能够站在婴儿车后面并以传统方式通过把手170推动婴儿车。座位组件104定位在脊柱140的前上方,并相对于婴儿车100朝前远离把手170。但是,这里公开的座位和框架部件的布置能够被改变,但仍然落在本发明的精神和范围内。另外,各种框架和座位组件的部件的形状、尺寸、配置、定向和位置也可与示出的例子不同,而不脱离本发明的精神和范围。
有利地,如图2所示,婴儿车框架102支撑刹车系统200,其包括与至少其中一个轮子(例如后轮106中的一个)相关联的刹车组件202、与把手170连接的刹车操作器204以及将刹车操作器204和刹车组件202操作性地相连的传动机构206。刹车操作器204能被看护者致动,以锁住和解锁刹车组件202,从而根据需要减速或阻止关联轮子的运动。当刹车组件200处于锁紧位置时,关联轮子106的运动被减速或阻止。当刹车组件202处于解锁位置时,轮子106自由地运动而不受刹车组件202的妨碍。现在将详细地描述刹车系统200。
具体地,每个把手部分172分别限定相反的终端208和210。所示的刹车操作器204为旋钮,其设在其中一个把手部分172的自由终端210上,虽然应当知道的是,刹车操作器204可选择地设在其中一个把手部分172的终端208上,或设在其中一个把手部分172的终端208和210之间的任何位置上。操作器204可描述成相对于看护者手的位置处于“内”终端210上,也就是说,当看护者抓住把手部分172时,操作器204在他或她的拇指所及的范围内。
同样参考图3和10,传动机构206在刹车操作器204和刹车组件202之间延伸。传动机构206可包括缆索组件212,所述缆索组件212包括设在相应的护套216中的缆索214。缆索214可用任何金属丝材料制成,护套216可用足够坚固以保护婴儿车框架102内的缆索214的任何弹性体材料制成。缆索组件212在近端连接到刹车操作器204上,并延伸穿过支柱176并进到脊柱140中。
在示出的实施例中,缆索组件212从刹车操作器204延伸,穿过把手部分172、支柱176,进到脊柱140、后腿146中的一个中,并连接到与后轮106中的一个关联的刹车组件202上。具体地,护套216的近端锚定在刹车操作器204处,护套216的远端锚定在刹车组件202处。因此,当刹车操作器204被致动时,缆索214在护套216内自由地运动。在操作过程中,用户能在一个方向上致动刹车操作器204,这使得缆索202平移并给刹车组件施加解锁的力。可替代地,刹车操作器204能在相反的方向上被致动,从而锁住刹车组件202。
应当知道的是,参考图4示出的和描述的传动机构206只是多个可替代的机构中的一个例子,所有能从刹车操作器204向刹车组件202传递运动的替代机构都在本发明范围内。
现在将参考图4-8描述刹车操作器204。具体地,示出的操作器204连接到把手部分172的终端210上并从该处轴向延伸,以便操作婴儿车100的看护者能用拇指轻松地接触。操作器204可包括在其外表面上的抓握部218或多个径向隔开并轴向延伸的抓握表面,所述抓握部或抓握表面的纹理与相邻把手部分172不同,以向看护者提供他或她正在接触或驱动操作器204的触觉反馈。
指状物220从把手部分172的终端210向内伸出,并包括多个径向隔开的柔性突出部222。每个突出部222具有设在其径向外表面的远端上的倒钩224。因此,每个倒钩224从突出部222径向向外伸出。终端210还包括居中设置的伸长的内圆柱形壁226和邻近壁226延伸的通道228。通道228的尺寸比护套216小,但比缆索214大。伸长的凹槽232形成于终端210的颈缩外表面230上,并终止于操作器204里面的位置。通道228和凹槽232具有比缆索214大的尺寸,因此提供了允许缆索214从把手部分172内延伸到操作器204内部的通道。
操作器204可以是旋钮的形式,其具有外套圈234,该外套圈234接纳把手部分172的终端210的颈缩外表面230。颈缩部分30被套圈234足够宽松地收纳,以便套圈的内表面能沿颈缩部分230的外表面滑动。因此,套圈234能与终端210相连,以使得操作器204和把手部分172之间能相对转动。
操作器204包括在操作器的轴向外端之间轴向延伸的颈部236。圆柱形孔238水平地延伸穿过颈部236,径向凹口240在与颈部236的轴向远端相邻但隔开的位置处形成于颈部中。孔238的直径比柔性突出部222的外径大,但是比倒钩224的外径小。当指状物220接纳在孔238中时,突出部222向内弯曲,以便倒钩224也接纳在孔238中。倒钩224继续地插入,直到倒钩224越过凹口240,此时突出部222弹开,使得倒钩224与凹口240接合。因此,操作器204可相对于把手部分172旋转。
操作器204还包括径向延伸到颈部236的径向外表面中但不穿过该径向表面的细长弯曲的通道242。通道242终止于矩形孔244处。缆索组件212的护套216的近端锚定在通道228的口部,缆索214延伸穿过通道228和凹槽232。缆索进一步延伸到通道242中。缆索214的近端与收纳在矩形孔244中的块246相连,以便缆索214在孔244处锚定到操作器204上。
最好如图8所示,在操作过程中,当操作器204在第一方向上相对于把手部分172沿箭头A所指的方向转动时,缆索214围绕颈部236缠绕,从而将缆索214的远端拉入。当操作器在与第一方向相反的第二方向(箭头B)转动时,缆索214从颈部236上松开,从而允许向外拉出缆索214的远端。
现在参考图8,刹车操作器204可包括防转机构250,其防止操作器204无意地从解锁位置转到锁定位置。从下文的描述中将知道的是,刹车组件202包括弹簧构件,其将传动机构以及从而将操作器204朝向锁定位置偏压。因此,操作器包括从颈部236的径向内表面径向向内延伸的棘爪252。棘爪252与从其中一个指状物222的径向外表面径向向外延伸的把手棘爪254轴向对齐。当操作器204转到解锁位置时,棘爪252和254接合,并需要增加的力以使得棘爪滑动越过彼此。棘爪252和254在周向设置,以便当操作器204已经转到解锁位置时,棘爪252和254滑过彼此。棘爪252和254之间的干涉需要向操作器204施加预定力,该预定力比相关刹车组件的弹簧构件的偏压力要大,以使操作器204相对于把手部分172朝锁定位置转动。
再参考图4,防转机构250还可包括设在颈缩部分230的径向外表面上的摩擦构件256和设在套圈234的径向内表面上的相应的摩擦构件258。摩擦构件256和258能够彼此形成接触并相互摩擦,从而抵抗相对运动。根据本发明的一个方面,这些摩擦构件围绕操作器和把手部分172在周向延伸60°。因此,对于操作器从解锁位置转到锁定位置的第一个60°,看护者感觉到阻力。操作器的整个行程可以是90°,以便旋转的最后30°能够在较小的阻力或没有阻力的情况下完成。有利地,摩擦力是符合人体工程学的,因为在转动的第一个60°的过程中看护者拇指的力量一般最强,而在旋转的最后30°最弱。如果需要,这些摩擦构件可仅对一个方向上的转动提供增大的阻力,以便仅仅在操作器204从解锁位置朝锁定位置转动时阻力才增大。
现在将参考图9-10描述刹车组件202。示出的刹车组件202操作性地与其中一个轮子相关联,例如后轮106,并且刹车组件202能够被致动到锁定位置,从而阻止该相关轮子的转动。因此,当刹车组件202被锁定时,刹车组件202阻止婴儿车100沿地面行驶。
后轮106包括与地面接合的外表面260,例如轮胎。多个外轮辐262在轮毂264和轮胎260之间径向延伸。多个内轮辐266在轮毂264内径向延伸。相邻的内轮辐266之间设有间隙268。
后腿146的远端通过板272闭合。孔274轴向穿过板272,孔274尺寸比护套216小但比缆索214大。从而,在护套216锚定在板272上的同时,缆索214穿过孔274。
刹车组件202包括由框架102支撑的支架270。弹簧座276从支架270的远端向内延伸,且与例如螺旋弹簧278的偏压构件的一端相连。螺旋弹簧278的另一端连接到设在第一弹簧座276上游的第二弹簧座280上。第二弹簧座280与缆索保持器282相连,缆索保持器282可动地支撑在从板272轴向伸出的导向器284中。导向器284可沿缆索保持器282的下表面延伸,并可邻近缆索保持器282的相对侧进一步部分或全部向上延伸。缆索保持器282包括矩形凹槽286,其用于收纳与缆索214的远端相连的块246。因此,当缆索214伸出和缩回时,缆索保持器282也伸出和缩回。
插销288从缆索保持器282轴向伸出,并与内轮辐266径向对齐,从而也与设在相邻轮辐266之间的间隙268径向对齐。因此,当刹车组件202被锁定时,插销288沿箭头C的方向伸到其中一个间隙268中(在图10的虚线所示出的),所导致的插销288和轮辐266之间的干涉防止后轮106转动和防止婴儿车100沿地面移动。当刹车组件202处于解锁状态时,消除了插销288与轮子106的干涉,因此轮子106自由地转动,从而便于婴儿车100沿地面不受阻碍地移动。弹簧278向第二弹簧座施加力,从而也向缆索保持器282和插销288施加力,这将把插销288朝锁定位置偏压。
虽然已经根据一个实施例示出并描述了刹车组件202,但本领域普通技术人员应了解:刹车组件202能够包括不脱离本发明精神和范围的任意数量的结构和配置,只要它们能够使传动机构206的定向力响应刹车操作器204的致动而锁定或解锁刹车组件202。
现在参考图11,根据本发明的替代实施例,示出的刹车组件202与前轮组件108相关联。具体地,刹车组件202能被致动到锁定位置,从而防止前轮组件108的角运动,以使前轮109的角定向不能改变。因此当刹车组件202’被锁定时,刹车组件202能够使婴儿车100沿地面以直线线性方向运动。
特别地,支撑130通过框架支架194而被枢转地连接到婴儿车框架102上。具体地,枢轴连接器289能够连接支撑130和框架支架。凹部291在与支架194隔开的位置形成于支撑130的上表面中。凹部291在具有竖直分量的方向上延伸(如所示的相对于竖直方向成角度)。刹车组件202安装到脊柱140的下端142的底面上,并以上述方式工作。因此,当刹车组件202被锁定时,插销288伸到凹部291中,并防止该支撑绕支架194枢转。当刹车组件202被解锁时,插销288从凹部291释放出来,支撑130和相关联的前轮109自由地绕脊柱140枢转,以改变前轮109的角定向并从而使婴儿车转向。应当知道的是,可在导向器284中形成可滑动地收纳弹簧座280的轴向延伸的槽缝。
虽然已经结合其中一个后轮106描述了刹车系统200,但本发明也设想了刹车系统200能够与后轮106中的任意一个或者两个相关联,以及单独地或和后轮结合地与前轮组件108相关联。例如,如图12A-B所示,上述类型的刹车组件202与后轮106和前轮组件108都相关联。因此,缆索组件112从刹车操作器204延伸,穿过把手部分172和支柱176,并部分地进入脊柱140中的一位置,在该位置,护套116锚定到连接在脊柱140内部的板117上。孔119穿过该板,缆索114延伸穿过孔119,且缆索114与多个缆索段300、302和304相连,该多个缆索段300、302和304延伸到分别设在后轮106和前轮组件108上的刹车组件202。缆索段300、302和304可包括以本领域普通技术人员所了解的方式被缆索护套包围的缆索。缆索段300、302和304的远端以上述的方式连接到相应的刹车组件202上。
因此,操作器204的致动使得缆索组件112和所有的缆索段以上述方式致动相应的刹车组件202。应当知道的是,其中一个或所有缆索段300-304可用于操作任意一个或两个后轮106,以及单独地或者结合后轮106一起地操作前轮组件108。如上文所描述的,前轮组件108的驱动旋转或角定向能被刹车组件202或刹车组件202’控制。仍然可供替换的,刹车组件202能被用来以上述方式防止前轮组件108的角定向调节。
虽然这里已经根据本公开的教导描述了一些实施例,但是本专利所覆盖的范围并不局限于此。相反,本专利覆盖落在可允许等同物范围内的本公开教导的所有实施例。
Claims (16)
1、一种婴儿车,其包括:
由至少一个可旋转的轮子支撑的婴儿车框架;
连接到框架的把手,该把手包括可在第一制动位置和第二释放位置之间移动的刹车操作器;和
由框架支撑并操作性地连接到所述至少一个轮子上的刹车组件;
操作性地将刹车操作器和刹车组件相连的传动机构;
其中,把手向制动位置的移动使刹车组件减缓所述至少一个轮子的运动。
2、如权利要求1所述的婴儿车,其中,把手向制动位置的移动使刹车组件阻止所述至少一个轮子的运动。
3、如权利要求2所述的婴儿车,其中,轮子具有可调节的角定向,当把手处于制动位置时该角定向被锁定。
4、如权利要求2所述的婴儿车,其中,当把手处于制动位置时轮子被锁定不能转动。
5、如权利要求1所述的婴儿车,其中,刹车操作器能转动。
6、如权利要求5所述的婴儿车,其中,刹车操作器还包括传动构件,该传动构件将把手的径向运动转变成施加到所述传动机构上的线性运动。
7、如权利要求1所述的婴儿车,其中,刹车操作器设在把手的端部。
8、如权利要求1所述的婴儿车,其中,刹车组件包括可与相应的轮子接合构件互锁的刹车接合构件。
9、如权利要求8所述的婴儿车,其中,刹车接合构件与轮子接合构件之间的互锁防止轮子改变角定向。
10、如权利要求9所述的婴儿车,其中,刹车接合构件和轮子接合构件在具有竖直分量的方向上延伸。
11、如权利要求8所述的婴儿车,其中,刹车接合构件与轮子接合构件之间的互锁防止轮子转动。
12、如权利要求8所述的婴儿车,其中,刹车接合构件包括棘爪,并且轮子接合构件包括大小能收纳该棘爪的凹部。
13、如权利要求8所述的婴儿车,其中,刹车组件还包括将刹车接合构件偏压离开轮子接合构件的偏压构件。
14、如权利要求1所述的婴儿车,其中,传动机构包括连接在刹车操作器和刹车组件之间的缆索。
15、如权利要求14所述的婴儿车,其中,缆索在刹车操作器和刹车组件之间延伸穿过婴儿车框架。
16、如权利要求1所述的婴儿车,其中,所述至少一个轮子包括后轮,且婴儿车框架还由前轮支撑。
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- 2007-04-03 WO PCT/US2007/065895 patent/WO2008085531A1/en active Application Filing
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- 2007-04-03 EP EP07754867A patent/EP2001727A2/en not_active Withdrawn
- 2007-04-03 WO PCT/US2007/065900 patent/WO2007118102A1/en active Application Filing
- 2007-04-03 WO PCT/US2007/065901 patent/WO2007118103A1/en active Application Filing
- 2007-04-03 WO PCT/US2007/065898 patent/WO2008054853A1/en active Application Filing
- 2007-04-03 EP EP07760038A patent/EP2004471A2/en not_active Withdrawn
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- 2007-04-03 US US11/696,183 patent/US7694980B2/en not_active Expired - Fee Related
- 2007-04-03 EP EP07872207A patent/EP2001725A1/en not_active Withdrawn
- 2007-04-03 DE DE602007010435T patent/DE602007010435D1/de active Active
- 2007-04-03 US US11/696,181 patent/US7909353B2/en not_active Expired - Fee Related
- 2007-04-03 WO PCT/US2007/008420 patent/WO2007117517A2/en active Application Filing
- 2007-04-03 US US11/696,084 patent/US20070235966A1/en not_active Abandoned
- 2007-04-03 EP EP07760050A patent/EP2001728A2/en not_active Withdrawn
- 2007-04-03 CN CN200780010865.4A patent/CN101410287B/zh not_active Expired - Fee Related
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- 2007-04-03 CN CN200780017466.0A patent/CN101443223A/zh active Pending
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- 2007-04-03 EP EP07760054A patent/EP2004425A1/en not_active Withdrawn
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Cited By (1)
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US11173747B2 (en) | 2017-05-04 | 2021-11-16 | Kids2, Inc. | Braking and locking system for caster wheels |
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