公开(公告)号：US6024869A

公开(公告)日：2000-02-15

申请号：US10959

申请日：1998-01-22

申请人： Jack Stifelman

发明人： Jack Stifelman

IPC分类号： B01D35/147 ,  F02M37/22 ,  B01D27/10 ,  B01D35/14 ,  B01D35/153

CPC分类号： F02M37/22 ,  B01D35/147 ,  Y10S210/17

摘要： A filter head for use in cooperative engagement with an associated liquid filter comprises a block member having a bypass valve assembly, and a back pressure flow valve assembly. The block member defines an inlet port; an inlet channel positioned for fluid communication between the inlet port and the associated liquid filter; a first outlet port; a second outlet port; and an outlet channel positioned for fluid communication between the associated liquid filter and the first and second outlet ports. When in an open orientation, the bypass valve provides fluid communication between the inlet channel and the outlet channel. When in a closed orientation, the bypass valve blocks fluid communication between the inlet channel and the outlet channel. The back pressure flow valve assembly, when in an open orientation, provides fluid communication between the outlet channel and the second outlet port. When in a closed orientation, the back pressure flow valve assembly blocks fluid communication between the outlet channel and the second outlet port.

摘要翻译： 用于与相关联的液体过滤器协同接合的过滤头包括具有旁通阀组件和背压流量阀组件的块件。 块构件限定入口端口; 入口通道，其定位成用于在入口端口和相关联的液体过滤器之间流体连通; 第一个出口; 第二出口; 以及出口通道，定位成用于在相关联的液体过滤器与第一和第二出口之间的流体连通。 当处于开放方向时，旁路阀在入口通道和出口通道之间提供流体连通。 当处于闭合方向时，旁通阀阻止入口通道和出口通道之间的流体连通。 当处于开放取向时，背压流量阀组件在出口通道和第二出口之间提供流体连通。 当处于闭合方向时，背压流量阀组件阻止出口通道和第二出口之间的流体连通。

公开(公告)号：US4480160A

公开(公告)日：1984-10-30

申请号：US413550

申请日：1982-08-31

申请人： Jack Stifelman

发明人： Jack Stifelman

IPC分类号： H01H35/38

CPC分类号： H01H35/38

摘要： A differential pressure switch is disclosed. The switch functions through a conductive path formed within the fluid of a single cavity of a housing having passages for communicating high and low pressure fluid to the cavity. The switch has a cantilevered post with movable conducting and nonconducting members mounted thereabout and being movable between conductive and nonconductive states according to the differential pressure within the cavity. One of the movable members provides sealing between the post and the cavity wall to separate the high and low pressure fluids.

摘要翻译： 公开了一种差压开关。 开关通过形成在具有用于将高压和低压流体连通到空腔的通道的壳体的单个空腔的流体内的导电路径起作用。 开关具有悬臂柱，其中可移动的导电和不导电构件安装在其周围，并且可根据空腔内的压差在导电状态和非导电状态之间移动。 可移动部件之一提供柱和腔壁之间的密封以分离高压和低压流体。

公开(公告)号：US20060021925A1

公开(公告)日：2006-02-02

申请号：US11189365

申请日：2005-07-26

申请人： Jack Stifelman

发明人： Jack Stifelman

IPC分类号： B01D27/08 ,  B01D35/30

CPC分类号： B01D27/08 ,  B01D35/30 ,  B01D2201/302

摘要： A re-usable, spin-on filter cannister for hydraulic use, which can attach to a block-like head; said head being previously existent for attachment of a conventional, throw-way, spin-on type cannister. The invention is designed with metal parts which can be assembled or dis-assembled without damage. Thus, when the spent filter element is discarded, the housing parts can be reused with a fresh element, without physical alteration to any of the metal container parts. The assembly/dis-assembly mode, which enables reuse, is by means of a radial displacement of split rings which, in engagement with the cannister and plate, act to contain the hydraulic stresses within the filter assembly.

摘要翻译： 一种用于液压用途的可重复使用的旋转式过滤罐，其可附接到块状头部; 所述头部以前存在用于附接常规的抛掷式旋转型罐。 本发明设计有可以组装或拆卸而不损坏的金属部件。 因此，当废弃的过滤元件被丢弃时，壳体部件可以用新鲜元件再次使用，而不会对任何金属容器部件进行物理改变。 组装/拆卸模式，其能够重新使用，是通过分开的环的径向位移，其与罐和板接合，用于容纳过滤器组件内的液压应力。

公开(公告)号：US4743374A

公开(公告)日：1988-05-10

申请号：US69711

申请日：1987-07-06

申请人： Jack Stifelman

发明人： Jack Stifelman

IPC分类号： B01D27/08

CPC分类号： B01D27/08 ,  B01D2201/4076 ,  Y10S210/17

摘要： A high-strength spin-on filter (10) of improved fatigue strength comprises a cylindrical housing (12), a unitary cover (28) and an internal filter element assembly (18). The open end of the housing (12) is folded inwardly over the periphery of the cover (28) and into deformable engagement with radial projections (54) thereon to secure the cover and housing against both relative rotation and separation without stress concentrations that would otherwise decrease fatigue life of the filter (10) in high-pressure pulsatile hydraulic systems.

摘要翻译： 具有改进的疲劳强度的高强度自旋式过滤器（10）包括圆柱形壳体（12），整体盖（28）和内部过滤元件组件（18）。 壳体（12）的开口端向内折叠在盖（28）的周边上并与其上的径向突起（54）可变形接合，以将盖和壳体抵抗相对旋转和分离，而不会产生应力集中 降低高压脉动液压系统中过滤器（10）的疲劳寿命。

公开(公告)号：US06217755B1

公开(公告)日：2001-04-17

申请号：US09012068

申请日：1998-01-22

申请人： Jack Stifelman ,  Johan Fobe ,  Angelo Schiavon ,  Enrico Greco

发明人： Jack Stifelman ,  Johan Fobe ,  Angelo Schiavon ,  Enrico Greco

IPC分类号： B01D35027

CPC分类号： B01D36/001 ,  B01D35/027 ,  B01D35/143 ,  B01D35/147 ,  B01D35/157

摘要： The filter head and filter housing define a liquid flow inlet path, a first liquid flow outlet path, and a second liquid flow outlet path. A filter media construction is positioned within the housing. The filter media construction, in combination with the housing, defines an unfiltered liquid volume, and a filtered liquid volume. A first liquid flow inlet path directs liquid from the liquid flow inlet to the unfiltered liquid volume. A first liquid flow outlet path directs liquid flow from the filtered liquid volume to the first liquid flow outlet. A second liquid flow outlet path directs liquid flow from the filtered liquid volume to the second liquid flow outlet. A first valve assembly selectively opens the second liquid flow path to passage of liquid therethrough in response to a first selected liquid pressure level within the filtered liquid volume. A second valve assembly comprises a first bypass valve assembly, and selectively directs fluid flow from the unfiltered liquid volume to the second liquid flow outlet, in response to a second selected liquid pressure level within the unfiltered liquid volume.

摘要翻译： 过滤器头和过滤器壳体限定液体流入口路径，第一液体流出口路径和第二液体流出口路径。 过滤介质结构位于壳体内。 与壳体组合的过滤介质结构限定未过滤的液体体积和过滤的液体体积。 第一液体流入口路径将液体从液体流入口引导到未过滤的液体体积。 第一液体流出口路径将液体流从过滤的液体体积引导到第一液体流出口。 第二液体流出口路径将液体流从过滤的液体体积引导到第二液体流出口。 第一阀组件响应于过滤液体体积内的第一选择的液体压力水平，选择性地打开第二液体流动通道以使液体通过其中。 第二阀组件包括第一旁通阀组件，并且响应于未过滤的液体体积内的第二选定的液体压力水平，选择性地将来自未过滤的液体体积的流体流引导到第二液体流出口。

公开(公告)号：US5104537A

公开(公告)日：1992-04-14

申请号：US556035

申请日：1990-07-20

申请人： Jack Stifelman ,  Jeff J. Theisen

发明人： Jack Stifelman ,  Jeff J. Theisen

IPC分类号： B01D27/08

CPC分类号： B01D27/08

摘要： A high pressure spin-on filter is provided having a generally cylindrical filter housing with an open end and a closed end. A generally cylindrical filter element having a closed end and an open end is disposed within the housing. A multifunctional rigid cover is disposed in the open end of the housing and includes a circular rim member extending into the housing. The rim member has an axial bore extending through the rim member and defines an inner surface. The inner surface is partially threaded and further has a groove formed in the inner surface. A main seal is located in the groove of the rim member. The rigid cover further includes a circular hub member having an axial bore through the hub member concentric with the axial bore of the rim member. A plurality of ribs interconnect the rib member to the hub member and cooperate with the rib member and the hub member to define a plurality of openings between the rib member and the hub member. Structure is provided for mounting the cover to the filter housing. The threads and main seal permit threaded and sealing connection of the filter to a filter head assembly such that fluid is directed from the filter head assembly through the filter for filtering.

摘要翻译： 提供了一种高压自旋式过滤器，其具有通常为圆柱形的过滤器壳体，其具有开口端和封闭端。 具有封闭端和开口端的大致圆柱形的过滤器元件设置在壳体内。 多功能刚性盖设置在壳体的开口端，并且包括延伸到壳体中的圆形边缘构件。 边缘构件具有延伸穿过边缘构件并限定内表面的轴向孔。 内表面是部分螺纹的，并且还具有形成在内表面中的凹槽。 主密封件位于边缘构件的凹槽中。 刚性盖还包括圆形轮毂构件，其具有穿过轮毂构件的轴向孔，其与轮缘构件的轴向孔同心。 多个肋将肋构件与轮毂构件互连，并与肋构件和轮毂构件配合以在肋构件和轮毂构件之间限定多个开口。 提供了将盖安装到过滤器壳体上的结构。 螺纹和主密封件允许过滤器螺纹和密封连接到过滤器头组件，使得流体从过滤器头组件通过过滤器被引导以进行过滤。

公开(公告)号：US4883083A

公开(公告)日：1989-11-28

申请号：US292644

申请日：1988-12-29

申请人： Patrick Fisher ,  Jack Stifelman ,  John F. Connelly ,  Jeff J. Theisen ,  Patrick Fisher

发明人： Patrick Fisher ,  Jack Stifelman ,  John F. Connelly ,  Jeff J. Theisen ,  Patrick Fisher

IPC分类号： B01D35/147

CPC分类号： B01D35/147 ,  Y10T137/2562 ,  Y10T137/7925

摘要： A filter head assembly includes a relief valve assembly therein, and is adapted for use in a spin-on filter or the like. When the relief valve assembly is in a closed mode of operation, fluid flow through the filter head, and an associated filter, results in conventional filtration. When the relief valve assembly is in open mode of operation, the filter is substantially bypassed permitting fluid to flow directly through the filter head, with filtration. The relief valve assembly includes a movable piston member therein, which opens and closes for the respective flow passage outwardly from a lateral takeoff port. Any substantial, undesirable, lateral forces acting upon a piston member may be substantially reduced by means of a lateral pressure release system provided according to the present invention. Generally, the lateral pressure-relief system comprises an annular recess formed in the piston member. The preferred piston member is cup-shaped and has an outer sidewall slide portion which forms a slip fit with a valve body relief valve. The preferred slide member includes groove means therein, facilitating movement. Also, preferably, a first end of the piston member includes an annular portion thereon providing an extension of a first end of the piston member to increase surface area against which fluid pressure may act.

摘要翻译： 过滤器头组件包括其中的安全阀组件，并且适于在旋转过滤器等中使用。 当安全阀组件处于闭合操作模式时，流过过滤嘴的流体和相关过滤器导致常规过滤。 当安全阀组件处于打开操作模式时，过滤器基本上被旁路，允许流体通过过滤直接流过过滤器头。 安全阀组件包括其中的可移动活塞构件，其从侧向起飞端口向外打开和关闭相应的流动通道。 通过根据本发明提供的侧向压力释放系统，可以大幅度地减小作用在活塞构件上的任何实质的，不期望的横向力。 通常，侧向减压系统包括形成在活塞构件中的环形凹部。 优选的活塞构件是杯形的并且具有与阀体安全阀形成滑动配合的外侧壁滑动部分。 优选的滑动构件包括槽装置，便于移动。 此外，优选地，活塞构件的第一端包括其上的环形部分，其提供活塞构件的第一端的延伸部，以增加流体压力可以作用的表面积。

公开(公告)号：US4615800A

公开(公告)日：1986-10-07

申请号：US690871

申请日：1985-01-14

申请人： Jack Stifelman ,  Patrick Fisher ,  John F. Connelly

发明人： Jack Stifelman ,  Patrick Fisher ,  John F. Connelly

IPC分类号： B01D35/14

CPC分类号： B01D35/14 ,  B01D35/12

摘要： The present invention is directed to a duplex filter apparatus which provides for a first primary filter path and a second path for secondary filtration. The first path includes a shutoff valve on one side of the primary filter and a check valve on the downstream side. The second path includes a regulating bypass valve on the upstream side of the secondary filter and a check valve on the downstream side. The regulating bypass valve gradually shifts fluid flow from the first path to the second path when differential pressure across the primary filter increases beyond a predetermined level. A reservoir return bypass valve directs fluid flow gradually from the secondary filter when differential pressure across the secondary filter increases beyond a predetermined level. Bleed valves are provided to relieve pressure on filter elements when the filter elements are isolated so that servicing may occur.

摘要翻译： 本发明涉及一种双相滤波器装置，其提供第一主滤波器路径和用于二次滤波的第二路径。 第一路径包括主过滤器一侧的截止阀和下游侧的止回阀。 第二路径包括在次级过滤器的上游侧的调节旁通阀和下游侧的止回阀。 当主过滤器上的压差增加超过预定水平时，调节旁路阀逐渐将流体从第一路径流动到第二路径。 当二级过滤器上的压差增加超过预定水平时，储油器回流旁路阀引导流​​体从次级过滤器流出。 提供排气阀以在过滤元件隔离时减轻过滤器元件上的压力，从而可能发生维修。

公开(公告)号：US4369113A

公开(公告)日：1983-01-18

申请号：US316144

申请日：1981-10-29

申请人： Jack Stifelman

发明人： Jack Stifelman

IPC分类号： F01M11/03 ,  B01D27/08 ,  F02M37/22

CPC分类号： B01D27/08 ,  Y10S210/17

摘要： The specification discloses an improved high strength spin-on fluid filter (10) including a housing (12), cover (28) and filter element assembly (18). The cover (28) includes a hub (30), rim (34), and radial ribs (32) and is preferably formed as an integral unit. The open end of the housing (12) is folded inwardly and back on itself over the rim (34) to form a folded connection (47) between the cover (28) and housing. Spacers (52) are preferably utilized around the lower end of the filter element assembly (18) to assure pressure equalization thereacross.

摘要翻译： 本说明书公开了一种改进的高强度旋压流体过滤器（10），其包括壳体（12），盖（28）和过滤元件组件（18）。 盖（28）包括轮毂（30），轮辋（34）和径向肋（32），并且优选地形成为一体的单元。 壳体（12）的开口端向内折叠并在其自身上在边缘（34）上方折叠以在盖（28）和壳体之间形成折叠连接（47）。 间隔件（52）优选地围绕过滤元件组件（18）的下端使用，以确保其间的压力平衡。