CN110248714B - 适用于无螺纹外壳的可扩展螺纹适配器 - Google Patents
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Abstract
本发明提供了一种适用于无螺纹外壳的可扩展螺纹适配器，过滤器组件包括限定内部容积的壳体。该壳体包括形成在壳体的壳体第一端中的第一联接构件。壳体第一端是无螺纹的。过滤器组件还包括过滤器头。过滤器头包括形成在其表面上的第一螺纹。过滤器组件还包括适配器。适配器包括形成在适配器的适配器第一端上的第二联接构件。第二联接构件与形成在壳体第一端中的第一联接构件接合，以便可拆卸地联接适配器和壳体。在适配器第一端上形成第二螺纹。第二螺纹与在过滤器头中形成的第一螺纹接合，以便可拆卸地联接适配器和过滤器头。
Description
相关申请的交叉引用
本申请要求2017年1月25日提交的美国临时专利申请No. 62/450,263的优先权，其内容通过引用整体并入本文并用于所有目的。
技术领域
本申请一般涉及流体过滤系统。更具体地，本申请涉及燃料水分离器过滤器组件。
背景技术
内燃机通常燃烧燃料（例如柴油、汽油、天然气等）和空气的混合物。在进入发动机之前，燃料通常在燃烧之前通过过滤器元件以从燃料中去除颗粒物质（例如，灰尘、金属颗粒、碎屑等）。类似地，提供给发动机的润滑剂或润滑油（例如发动机油）也可以通过过滤元件，以便在与发动机连通之前从润滑油中除去颗粒物质。燃料或油可能包括水，水可能积聚在过滤器中并且可能必须被除去。
各种过滤器组件通常包括定位在过滤器组件的壳体的端部上的螺母板，这种螺母板提供用于将过滤器头连接到过滤器组件的壳体的第一端的机构，或者将盖子或碗体连接到过滤器壳体的第二端的机构。这种螺母板将额外的部件引入过滤器组件中，并且可能增加这种过滤器的制造复杂性和制造成本。另外，过滤器构造成通过螺纹连接可旋转且可拆卸地连接到头部和/或碗体。由于这种直接连接，过滤器通常必须具有某种类型和/或尺寸，以便可靠地连接到头部和/或碗体。因此，较大的壳体直径和壁厚的增加对于壳体供应商来说是难以适应，并且用于适应这些变化的滚丝螺纹的替代设计选择是昂贵的。
发明内容
各种实施例提供了一种过滤器组件，其包括限定内部容积的壳体。壳体包括形成在壳体的壳体第一端中的第一联接构件。壳体第一端是无螺纹的。过滤器组件还包括过滤器头。过滤器头包括形成在其表面上的第一螺纹。过滤器组件还包括适配器。适配器包括形成在适配器的适配器第一端上的第二联接构件。第二联接构件与形成在壳体第一端中的第一联接构件接合，以便可拆卸地联接适配器和壳体。在适配器第一端上形成第二螺纹。第二螺纹与在过滤器头中形成的第一螺纹接合，以便可拆卸地联接适配器和过滤器头。
进一步的实施例提供了用于分离器过滤器组件（例如燃料水分离器过滤器组件）的适配器。适配器包括形成在适配器主体的适配器第一端上的第一联接构件。第一联接构件构造成接合形成在壳体的壳体第一端中的第二联接构件，以便可拆卸地联接适配器和壳体。第三联接构件形成在适配器第一端上。第三联接构件构造成接合形成在过滤器头中的第四联接构件，以便可拆卸地联接适配器和过滤器头。
从以下结合附图的详细描述中，这些和其他特征以及其操作的组织和方式将变得显而易见，其中相同的元件在下面描述的几个附图中具有相同的标号。
附图说明
图1A是根据示例实施例的过滤器组件的分解透视图。
图1B是具有图1A的过滤器组件的分离的过滤器头的组装透视图。
图1C是具有过滤器组件的附接过滤器头的主平面视图。
图2是图1C的组装过滤器组件的横截面图。
图3是图2的过滤器组件的一部分的局部横截面分解图。
具体实施方式
本文描述的实施例总体上涉及用于在不使用螺纹连接的情况下将壳体固定到过滤器头的系统和方法。通常，壳体具有至少一个形成在壳体的顶部或第一端中的棘爪（例如，突起）特征、过滤器头，该过滤器头具有形成在过滤器头的内表面上的第一螺纹；和适配器，其配置成可拆卸地联接到壳体和过滤器头部。
本文所述的过滤器组件的实施例包括适配器，该适配器包括用于固定壳体的面向内部的联接构件和固定到过滤器头的面向外部的联接构件，不直接在壳体和过滤器头之间使用螺纹连接。适配器可包括公联接构件和母联接构件，其可提供益处，包括例如：（1）允许壳体直接连接到带螺纹的过滤器头，从而允许在旋装式过滤系统中使用任何壳体;（2）提供至少一个分段部分，其允许适配器的结构弯曲，从而使壳体安装在适配器中并允许使用多个连接构件（例如，卡扣配合，棘爪配合等）;（3）过滤器头与适配器之间的安全密封面;（4）当适配器与壳体接合时，在密封垫圈上施加垂直载荷而不增加通常存在旋转产品的扭转扭曲;以及（5）通过减少过滤器组件中包括的部件数量降低过滤器组件的组装的制造成本并允许可用的壳体类型的灵活性。
图1A是过滤器组件100的分解透视图。图1B是具有分离的过滤器头的过滤器组件100的组装透视图。图1C是具有附接的过滤器头的过滤器组件100的主平面视图。过滤器组件100包括壳体30、过滤器元件50、适配器10和过滤器头70。在图1A-C所示的实施例中，过滤器组件100是用于过滤燃料的燃料过滤器。然而，过滤器组件100不限于燃料的过滤，并且可以用于过滤其他流体，例如润滑油、油、空气等。例如，过滤器组件100可以配置成在将燃料引入发动机（例如柴油发动机）之前去除燃料（例如柴油燃料）中包含的水。另外，过滤器组件100不限于燃料水分离器过滤器，并且可替代地配置成用作不同类型的过滤器，包括但不限于吸入侧过滤器。
过滤器头70包括流体入口和流体出口，流体入口允许待过滤流体流入过滤器元件50，流体出口允许过滤后的流体流出过滤器元件50。过滤器头70包括过滤器头基部72和从过滤器头基部72的外周延伸的过滤器头侧壁74。过滤器头侧壁74从过滤器头基部72的外周向壳体30延伸。过滤器头70在过滤器头侧壁74的内表面上具有第一螺纹76。第一螺纹76构造成可拆卸地接合适配器10的第二螺纹12，以便联接到适配器10的第一端20。
过滤器元件50可包括旋装式过滤器，其包括壳体30和过滤器元件50。在一些实施例中，过滤器元件50永久地固定或安装在壳体30内。过滤器元件50包括过滤介质52，过滤介质52构造成过滤流体。过滤介质52包括具有预定孔径的多孔材料，并且构造成从流体（例如流过其中的空气）过滤颗粒物质。过滤介质52可包括褶皱介质、波纹状介质、凹槽介质等。设置在过滤介质52的中心内的可以是中心管58。中心管58可构造成支撑过滤介质52和/或允许流体流过过滤介质52。中心管58可包括多个孔，以允许流体（例如，空气、燃料、油等）在通过过滤介质52之后流入过滤器通道。中心管58可以由塑料、金属或任何其他合适的材料形成。
过滤器元件50包括内密封构件54和外密封构件56，以与过滤器头70和/或适配器10提供径向密封。在一些实施例中，由内密封构件54和外密封构件56形成的密封可包括“无泄漏”的密封或“基本上”无泄漏的密封。如本文所用，术语“无泄漏”应理解为包括气密密封（即，不透气的密封）以及不透液体的密封。当术语“基本上”与“无泄漏”结合使用时，旨在表达虽然期望总体的流体不渗透，但是即使在“基本上无泄漏”密封中，由于制造公差或其他实际考虑（例如，施加在密封件上和/或流体内的压力）也可能发生一些极小的泄漏。在一些布置中，内密封构件54和外密封构件56中的一个或两个可包括O形环。
壳体30限定内部容积，过滤器元件50位于该内部容积中。壳体30可以由坚固且刚性的材料形成，例如塑料（例如，聚丙烯、高密度聚乙烯、聚氯乙烯等）、金属（例如，铝、不锈钢等）或任何其他合适的材料。在特定实施例中，壳体30可包括通常具有圆形横截面的圆柱形壳体。在其他实施例中，壳体30可具有任何合适的形状，例如正方形、矩形、多边形等。
壳体30包括壳体第一端34和壳体第二端36。壳体第一端34包括在其外表面上的第一联接构件32。在一些布置中，第一联接构件32包括到公-母联接构件对的母端，所述母端构造成容纳适配器的对应的公联接构件（例如，第二联接构件16）。如本文所用，“壳体第一端”34旨在表示包括从形成壳体30构件的顶部的边界开始朝向形成壳体30的底部的边界的轴向距离的约百分之二十的区域。如本文所用，“壳体第二端”36旨在表示包括从对应于壳体30构件的底部的边界开始朝向对应于壳体30的顶部的边界的轴向距离的约百分之二十的区域。
如图1A所示，第一联接构件32包括棘爪元件。在一些布置中，第一联接构件32冲压到壳体30中。在其他布置中，第一联接构件32可以铸造或以其他方式形成在壳体30的侧壁中。第一联接构件32构造成可拆卸地接合适配器10的第二联接构件16，以便联接到适配器10的第一端20。
适配器10构造成将壳体30联接到过滤器头70和过滤器元件50。适配器10包括设置在第一端20外部的第二螺纹12、第一端20上的至少一个分段部分14、设置在第一端20内部的第二联接构件16、以及设置在第二端22外部上的多个凹口18。在一些布置中，第二联接构件16包括公-母联接构件对的公联接构件，公联接构件构造成容纳壳体的对应的母联接构件（例如，第一联接构件32）。
通常，适配器10首先接收壳体30，由此适配器10围绕壳体的壳体第一端34周向定位。过滤器头70接收适配器10，由此过滤器头70周向围绕适配器10的第一端20。在将适配器10安装到过滤器头70中时，过滤器头70、适配器10、壳体30和过滤器元件50都可拆卸地联接并在各种位置形成“无泄漏”的密封以便于流体的吸入、过滤、和流出。如将理解的，适配器10可以与多个不同的壳体30一起重复使用（例如，在过滤器维修期间，适配器10可以从用过的壳体30移除，用过的壳体30被丢弃，并且适配器10重新连接到一个具有与联接构件32配合构件的新的壳体30）。适配器10可以由坚固且刚性的材料形成，例如塑料（例如，聚丙烯、高密度聚乙烯、聚氯乙烯等）、金属（例如，铝、不锈钢等）或任何其他合适的材料。
至少一个分段部分14构造成允许在适配器10的第一端20中弯曲，以便于与壳体30联接。分段部分14允许适配器10插入壳体30并将适配器10的第二联接构件16提供给壳体30的第一联接构件32。分段部分14可径向设置在适配器10的第一端上。在一些布置中，分段部分14包括八个分段部分，以在壳体30上提供更大的弯曲和简易的安装。
第二联接构件16包括在第一端20上（例如，在内壁上）面向内部的联接构件，并且构造成与壳体30的第一联接构件32联接。另外，第二联接构件16径向向内延伸。第二联接构件16可在用于形成适配器10的深拉加工过程中形成。在一些布置中，第二联接构件16包括公棘爪元件。然而，适配器10和壳体30之间的连接不特别限于棘爪元件，并且可以是任何其他适当的可拆卸连接，例如卡扣连接等。可以理解的是，当可扩展适配器10连接到壳体30时，在内密封构件54和外密封构件56上施加垂直载荷而不增加通常使用旋转式过滤器组件（需要的）存在的扭转扭曲。
第二螺纹12第一端20上（例如，在外壁上）包括面向外部的螺纹并构造成与过滤器头70的第一螺纹76接合。另外，第二螺纹12径向向外延伸。在一些布置中，螺纹设计是扶壁设计的螺纹设计，由此螺纹由设置在过滤器头70上的螺纹正向固定。在那些布置中，螺纹和/或适配器10的膨胀不会松动或减小施加到密封构件（例如，垫圈）的力。第二螺纹12可以在用于形成适配器10的深拉加工过程中形成。在一些布置中，第二螺纹12每圈包括两个螺纹。然而，适配器10和过滤器头70之间的连接不特别限于螺纹连接，并且可以是任何其他适当的可拆卸连接，例如卡扣连接等。
多个凹口18或凹陷可以形成在适配器第二端22的外表面上。例如，多个凹口18可包括围绕适配器第二端22周向限定的轴向凹口。多个凹口18可以在每个相邻凹口之间以任何合适的间隔定位（即，任意凹口以任何合适的间距定位）。多个凹口18可有助于抓握壳体30，以便将壳体联接和/或脱开，例如与过滤器头70。
参考图1B，示出了具有图1A的过滤器组件100的分离的过滤器头70的组装透视图。为了安装适配器10，首先将过滤器元件50设置在壳体30中并固定在壳体内，例如，通过螺纹连接、焊接连接或卡扣连接。然后将现在包括在壳体30的内部容积中的过滤器元件50的壳体30插入适配器10中，使得适配器10的第二联接构件16布置在壳体30的第一联接构件32中。适配器10的分段部分14允许弯曲并有助于简化适配器10在壳体30上的安装。在一些实施例中，适配器10可以比壳体30更小（例如，半径更小）。在那些实施例中，安装可以颠倒，使得适配器10插入壳体30中，使得适配器10的第二联接构件16设置在壳体30的第一联接构件32中。
参考图1C，示出了图1A的过滤器组件100的组装主平面视图。为了接合适配器10-现在可拆卸地联接到过滤器元件50和壳体30-适配器10与过滤器头70接合。该安装包括旋转适配器10，使得过滤器头70的第一螺纹76与适配器10的第二螺纹12旋转地联接。可以理解的是，适配器10旋转到过滤器头70中，压缩分段部分14和适配器10的第一端20，从而拧紧设置在壳体30的第一联接构件32中的适配器10的第二联接构件16的联接。在将适配器10安装在过滤器头部70中时，联接在一起的各种特征基本上彼此齐平并且可以包括“无泄漏”的密封。应理解，当适配器10附接到过滤器头70时，垂直载荷施加在内密封构件54和外密封构件56上，而不增加扭转扭曲。在一些实施例中，适配器10比过滤器头70更大（例如，半径更大）。在那些实施例中，安装可以是不同的，使得适配器10升高到过滤器头70，使得过滤器头70插入适配器10中，并且适配器10旋转使得过滤器头70的第一螺纹76与适配器10的第二螺纹12旋转地联接。
参考图2，示出了图1C的组装过滤器组件的横截面视图。如图所示，联接在一起的各种特征基本上彼此齐平并且包括“无泄漏”的密封。例如，过滤器头70和适配器10借由螺纹联接器12、76（例如，公-母螺纹联接器）基本齐平。适配器10和壳体30借由联接构件连接基本齐平。过滤器元件50的内部密封构件54和外部密封构件56可密封地连接并与过滤器头70齐平。过滤器元件50通过第一（例如顶部）端盖210和第二（例如，底部）端盖212牢固地设置在壳体30中。在操作中，流体通过入口（未示出）流入过滤器头70并流入壳体30中202。流体被过滤介质52过滤并径向穿过过滤介质52进入中心管58。经过滤的流体轴向地行进通过中心管58并从过滤器头70中的出口204（未示出）流出。
参考图3，示出了图2的过滤器组件的一部分的局部横截面分解图。图3提供了过滤器头70和适配器10的分解视图，其通过螺纹联接器12、76基本上齐平。适配器10和壳体30通过联接构件16、32基本齐平; 过滤元件50的内密封件54和外密封件56密封连接并与过滤器头70齐平; 以及过滤元件50通过第一端盖210和第二端盖212牢固地设置在壳体30中。
在第一端盖210上扩展，第一端盖210联接到过滤介质52的顶端。第一端盖210可由任何合适的材料形成，例如塑料、金属、橡胶、增强橡胶、聚合物等。第一端盖210可具有横截面对应于壳体30的横截面。第一端盖210包括基部302和从基部302朝向过滤介质52延伸的第一轴向侧壁304。第一轴向侧壁304从第一端盖210的基部302的外边缘向内定位。例如，第一轴向侧壁304可包括从基部302延伸的圆形侧壁，并限定围绕过滤器组件100的纵向轴线的流体出口。中心管58可以定位在出口中，以便提供用于将过滤后的流体从壳体30排出的出口导管。
第一端盖210还包括从基部302的外边缘朝向过滤介质52延伸的第二轴向侧壁306。第二轴向侧壁306与第一轴向侧壁304间隔开。过滤介质第一端310可定位在第一轴向侧壁304和第二轴向侧壁306之间。例如，第二轴向侧壁306可以与第一轴向侧壁304同心并且与第一轴向侧壁304分开，使得在第一轴向侧壁304和第二轴向侧壁306之间限定周向空间。过滤介质第一端310可以定位在第一轴向侧壁304和第二轴向侧壁306之间的空间中。在一些实施例中，过滤介质第一端310可以固定地联接到第一端盖210的基部302，例如通过粘合剂、热粘合或熔接到第一端盖210。在一些布置中，第一端盖210包括限定在基部302中与第二轴向侧壁306相邻的流体入口和限定在第一轴向侧壁304内的流体出口。
在外密封构件56上扩展，外密封构件56定位在第一端盖凸缘的外表面和壳体第一端34的内表面之间的U形通道中。外密封构件56在壳体30和第一端盖210之间形成密封，例如无泄漏。外密封构件56可包括机器切割垫圈，其具有任何合适的横截面，例如矩形横截面或圆形横截面（例如，O形环）。在一些布置中，外密封构件56包括具有矩形或正方形横截面形状的方形切割垫圈。
过滤器头70还可包括限定在过滤器头基部72上的周向凹槽308，例如在过滤器头70的面向第一端盖210的过滤器头基部72的第一表面上。周向凹槽308构造成接收外密封构件56的至少一部分，使得外密封构件56可密封壳体30、第一端盖210、适配器10和过滤器头70中的每一个。过滤器头侧壁74还可以在壳体30的壳体第一端34上施加径向力，该径向力可以将壳体凸缘推向外密封构件56和第一端盖210，从而增强由外密封构件56提供的密封。
此外，壳体30还可包括壳体凸缘38，壳体凸缘38围绕壳体凸肩的外周边周向定位。壳体凸缘38轴向地远离壳体30的第一联接构件32平行于纵向轴线延伸，使得壳体凸肩和壳体凸缘38限定L形槽。外密封构件56的至少一部分位于L形槽内。
应当注意，本文用于描述各种实施例的术语“示例的”旨在表示这样的实施例是可能的实施例的可能的示例、表示和/或说明（并且这样的术语不打算暗示这样的实施例必须是非凡的或最优的示例）。
这里使用的术语“联接”、“连接”等意味着两个构件直接或间接地彼此连接。这种连接可以是静止的（例如永久的）或可移动的（例如，可移除的或可释放的）。这样的连接可以通过两个构件或者两个构件和任何另外的中间构部件彼此一体地形成为单个整体，或者通过两个构件或者两个构件和任何另外的中间构件相互连接来实现。
本文对元件位置（例如，“顶部”、“底部”、“上方”、“下方”等）的引用仅用于描述图中各种元件的方向。应当注意，根据其他示例性实施例，各种元件的取向可以不同，并且这些变型旨在被本公开所涵盖。
需要特别注意的是，各种示例实施例的构造和布置仅是说明性的。尽管在本公开中仅详细描述了几个实施例，但是阅读本公开的本领域技术人员将容易地认识到实质上不脱离本文所述主题的新颖教导和优点可能有许多修改（例如，各种元件的大小、尺寸、结构、形状和比例的变化、各种参数、安装布置、材料的使用、颜色、取向等）。例如，示出为整体形成的元件可以由多个部分或元件构成，元件的位置可以颠倒或以其他方式变化，并且离散元件或位置的性质或数量可以改变或变化。根据替代实施例，可以改变或重新排序任何过程或方法步骤的顺序或序列。在不脱离本文给出的概念的范围的情况下，还可以在各种示例实施例的设计，操作条件和布置中进行其他替换、修改、改变和省略。
虽然本说明书包含具体的实现细节，但这些不应被解释为对任何发明或可能要求保护范围的限制，而是作为对特定发明的特定实现特有的特征的描述。在单独实现的上下文中在本说明书中描述的某些特征也可以在单个实现中组合实现。相反地，在单个实现的上下文中描述的各种特征也可以在多个实现中单独或以任何合适的子组合来实现。此外，尽管上述的特征可以描述为以某些组合起作用并且甚至最初如此声明，但是在某些情况下可以从组合中切除来自所要求保护的组合的一个或多个特征，所要求保护的组合可以针对子组合的子组合或变型。
Claims (13)
1.一种过滤器组件，其特征在于，包括：
限定内部容积的壳体，所述壳体包括形成在壳体的壳体第一端的外表面上的第一联接构件，所述壳体第一端是无螺纹的；
过滤器头，所述过滤器头包括在其表面上形成的第一螺纹；和
适配器，所述适配器包括：
第二联接构件，所述第二联接构件形成在适配器的适配器第一端的内部表面上，第二联接构件与形成在所述壳体第一端中的第一联接构件接合，以便可拆卸地联接所述适配器和所述壳体，和：
第二螺纹，所述第二螺纹形成在适配器的第一端的外部表面上，所述第二螺纹与形成在过滤器头中的第一螺纹接合，以便可拆卸地联接所述适配器和所述过滤器头；以及
分段部分，所述分段部分形成在所述适配器第一端上，所述分段部分允许所述适配器第一端中的弯曲以扩展到一大直径，进而接收所述壳体，
其中所述适配器向所述过滤器头的旋转将所述分段部分压缩到所述壳体中。
2.根据权利要求1所述的过滤器组件，其特征在于，所述第一螺纹形成在所述过滤器头的内表面上。
3.根据权利要求1所述的过滤器组件，其特征在于，所述第二联接构件包括突起和棘爪中的一个，并且其中，所述第一联接构件包括所述突起和所述棘爪中的另一个。
4.根据权利要求1所述的过滤器组件，其特征在于，所述第二螺纹形成在所述适配器第一端上的外表面上，并且包括加强构件。
5.根据权利要求1所述的过滤器组件，其特征在于，还包括：
位于所述壳体内部容积内的过滤元件，所述过滤元件包括：
过滤介质；和
联接到所述过滤介质的过滤介质第一端的第一端盖，所述第一端盖包括：
基部，和
围绕所述基部的周边定位的第一端盖凸缘，所述第一端盖凸缘从基部远离过滤元件延伸；和
位于第一端盖凸缘的外表面和壳体第一端的内表面之间的第一端部密封构件，所述第一端部密封构件在所述壳体和所述第一端盖之间形成密封。
6.根据权利要求1所述的过滤器组件，其特征在于，所述适配器永久地连接到所述壳体。
7.一种用于分离器过滤器组件的适配器，其特征在于，包括：
适配器主体；
第一联接构件，其形成在适配器主体的适配器第一端上，第一联接构件构造成接合形成在壳体的壳体第一端的外表面上的第二联接构件，以便可拆卸地联接所述适配器和所述壳体；和
第三联接构件，其形成在所述适配器第一端的外部表面上，第三联接构件构造成接合形成在过滤器头中的第四联接构件，以便可拆卸地联接所述适配器和所述过滤器头；以及
分段部分，所述分段部分形成在所述适配器第一端上，所述分段部分允许所述适配器第一端中的弯曲以扩展到一大直径，进而接收所述壳体，
其中所述适配器向所述过滤器头的旋转将所述分段部分压缩到所述壳体中。
8.根据权利要求7所述的适配器，其特征在于，形成在所述适配器第一端上的所述第一联接构件包括形成在所述适配器第一端上的内表面上的突起。
9.根据权利要求7所述的适配器，其特征在于，所述第三联接构件和所述第四联接构件均包括螺纹联接构件。
10.根据权利要求7所述的适配器，其特征在于，形成在所述适配器第一端上的第三联接构件沿着所述适配器的外圆周表面径向设置。
11.根据权利要求7所述的适配器，其特征在于，形成在所述适配器第一端上的第一联接构件沿着所述适配器的内圆周表面径向设置。
12.根据权利要求7所述的适配器，其特征在于，还包括：
在所述适配器的外表面上形成多个凹口，所述多个凹口是围绕适配器周向限定的轴向凹口，所述多个凹口便于使用者抓握以联接适配器和/或脱离适配器。
13.根据权利要求7所述的适配器，其特征在于，还包括沿着所述适配器的外表面周向延伸的外凸缘，所述第三联接构件构造成连接到所述过滤器头，所述第三联接构件设置在所述外凸缘上。
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| US4257890A (en) * | 1979-07-25 | 1981-03-24 | Hurner Erwin E | Fuel-water separator |
| CN201696412U (zh) * | 2010-01-19 | 2011-01-05 | 柯新国 | 膨胀螺丝改进结构 |
| CN202040173U (zh) * | 2011-04-22 | 2011-11-16 | 莱特利国际工程有限公司 | 迫固装置 |
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| WO2018140310A1 (en) | 2018-08-02 |
| US20190366248A1 (en) | 2019-12-05 |
| DE112018000527T5 (de) | 2019-10-10 |
| CN110248714A (zh) | 2019-09-17 |
| US11298640B2 (en) | 2022-04-12 |
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