RU2663044C2 - Keyed thread engagement on screw-on filter element - Google Patents

Keyed thread engagement on screw-on filter element Download PDF

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Publication number
RU2663044C2
RU2663044C2 RU2016143163A RU2016143163A RU2663044C2 RU 2663044 C2 RU2663044 C2 RU 2663044C2 RU 2016143163 A RU2016143163 A RU 2016143163A RU 2016143163 A RU2016143163 A RU 2016143163A RU 2663044 C2 RU2663044 C2 RU 2663044C2
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Russia
Prior art keywords
filter
hole
central
threaded
thread
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RU2016143163A
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Russian (ru)
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RU2016143163A3 (en
RU2016143163A (en
Inventor
Майкл ВЕРКАММЕН
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Паркер-Ханнифин Корпорейшн
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Priority to PCT/US2014/033173 priority Critical patent/WO2015156760A1/en
Publication of RU2016143163A3 publication Critical patent/RU2016143163A3/ru
Publication of RU2016143163A publication Critical patent/RU2016143163A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/08Construction of the casing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/10Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/40Special measures for connecting different parts of the filter
    • B01D2201/4092Threaded sections, e.g. screw

Abstract

FIELD: technological processes.SUBSTANCE: invention relates to filtration. Filter element includes a ring of filtration media circumscribing a central axis and defining a central cavity. Annular end cap of the filter element is sealingly bonded at an end of the media. End cap includes a central opening into the central cavity, and a lateral opening spaced laterally outward from the central opening. Central opening includes a threaded connection portion to enable the element to be screwed-on to a complimentarily-threaded connection portion of a filter head. Connection portion of the central opening includes at least one slot opening which extends both axially and in a direction along a circle, and the opening extends radially away from the connection portion.EFFECT: preventing the installation of the wrong filter.9 cl, 10 dwg

Description

Technical field

The present invention generally relates to filter cartridges and, in particular, to screw-on filter cartridges.

State of the art

Filter cartridges are designed to remove contaminants from various fluids, including fuel, engine oil, gear oil, lubricating oil or hydraulic oil. In a fuel supply system, for example, a filter cartridge filters the fuel upstream of the engine to avoid the harmful effects of water and / or pollutants. Oil filters are used in many different types of hydraulic machines, various other hydraulic systems of vehicles, internal combustion engines and gas turbine engines. Often, the preferred filter design includes a “screw-on” filter cartridge that can be easily installed in tight spaces (for example, an overfilled engine compartment). When installed with screw connections are made and seals are formed by the simple action of screwing the filter cartridge onto the threaded mounting tab.

Disclosure of invention

It seems important to create the appropriate type of filter in each application and, in connection with this, the filter head and the corresponding filter cartridge are proposed, which can, thanks to the fit on the protrusion, prevent screwing of the inappropriate filter. One or more protrusions located in front of the thread on the filter head may fit into corresponding slotted holes or grooves in the thread of the filter element. After pushing over the protrusions, the filter element can be screwed on as usual. In addition, such a system can prevent the filter from falling accidentally if the thread did not “grab” during the first turn or in the final phase of thread separation during filter removal. If the thread does not adhere and the installer releases the filter element, the filter element can still be held on the filter head, since the threads on the filter element will be caught by protrusions on the filter head that are no longer aligned with the slotted holes of the filter element. Finally, this system can be used to align the threads of the filter element with the threads of the filter head by determining their initial relative positions based on the positions of the protrusions and slot holes, thereby facilitating the installation of the filter element.

Thus, in accordance with one aspect of the present invention, the filter element comprises a filter medium ring surrounding a central axis and forming a central cavity; an annular end cap connected to be sealed at the end of the medium, wherein the end cap comprises a central hole in the central cavity and a side hole spaced laterally from the outside of the central hole, the central hole comprising a threaded connection portion to allow screwing of the element onto the connecting section with a mating thread on the filter head, while the connecting section of the Central hole contains at least one passing axially slit hole radially remote from the connecting portion.

Optionally, at least one axially extending slotted hole extends from an axially outer end of the connecting portion to an axial inner end of the connecting portion.

Optionally, at least one axially extending slotted hole is at least two axially extending slotted holes spaced circumferentially around a connecting portion.

Optionally, at least two axially extending slit openings are spaced equidistantly.

Optionally, the connecting portion is oriented radially inward.

Optionally, at least one axially extending slit hole has the same radial depth as the maximum thread depth at the connecting portion.

Optionally, at least one axially extending slit hole extends from an axially outer end of the central hole to an axially inner end of the central hole.

Optionally, at least one axially extending slotted hole is four axially extending slotted holes spaced circumferentially around a connecting portion.

Optionally, the four axially extending slit openings are spaced equidistantly.

Optionally, at least one axially extending slit hole extends in a circumferential direction, thereby forming at least a portion of a helix.

Optionally, at least one axially extending slit hole comprises an axially extending portion and a circumferential extending portion.

Optionally, at least one axially extending slit hole comprises a second axially extending portion extending from a portion extending in a circumferential direction, thereby forming a stepped transition.

In accordance with another aspect of the present invention, the filter element comprises a filter medium ring surrounding a central axis and forming a central cavity; an annular end cap connected to be sealed at the end of the medium, wherein the end cap comprises a central hole in the central cavity and a side hole spaced laterally from the outside of the central hole, the central hole comprising a first flat portion radially oriented extending in a direction along the circumference and a first threaded portion extending in a circumferential direction from the first flat portion to allow screwing of the element into current with mating threads on the filter head.

Optionally, the first flat portion extends from an axially outer end of the first threaded portion to an axially inner end of the first threaded portion.

Optionally, the filter element further comprises a second flat portion extending in a circumferential direction from the peripheral end of the first threaded portion distant from the first flat portion, and a second threaded portion extending in a circumferential direction from the peripheral end of the second flat portion, distal from the first threaded portion .

Optionally, the first and second threaded portions have an equal extent in the circumferential direction.

Optionally, the flat portion and the threaded portion are oriented radially inward.

Optionally, the maximum thread depth of the threaded portion is aligned with the first flat portion.

Optionally, the first flat portion extends from an axially outer end of the central hole to an axially inner end of the central hole.

Optionally, the filter element further comprises a second, third and fourth flat sections spaced circumferentially around the central hole, and a second, third and fourth threaded sections spaced circumferentially around the central hole and, respectively, located between the respective flat sections.

Optionally, the flat areas are spaced equidistantly.

Optionally, the threaded portions are spaced equidistantly.

Optionally, at least one axially extending slit hole extends in a circumferential direction, thereby forming at least a portion of a helix.

Optionally, at least one axially extending slit hole comprises an axially extending portion and a circumferential extending portion.

Optionally, at least one axially extending slit hole comprises a second axially extending portion extending from a portion extending in a circumferential direction, thereby forming a stepped transition.

In accordance with another aspect of the invention, the filter assembly comprises a filter head having an annular threaded connecting portion defining an axis of connection to permit screwing of the filter element having a connecting portion with mating thread onto the filter head, wherein the connecting portion of the filter head comprises a threaded portion and a locking portion axially external to the threaded portion, wherein the locking portion has at least one radially protruding protrusion having such dimensions as to intersect the threads of the connecting portion mating with the threads on the filter element.

In accordance with another aspect of the present invention, the filter head adapter comprises an annular housing surrounding a central hole and forming a longitudinal axis, wherein the annular housing has a threaded key connecting portion to enable screwing of the adapter onto the connecting portion with a mating thread on the filter head, wherein the key the connecting section contains at least one axially extending slit hole radially remote from the key connector of the section, and the annular body has a threaded connecting section of the filter to enable screwing of the filter element with a conjugated thread on the adapter.

Optionally, the key connecting portion is axially offset from the connecting connecting portion of the filter.

Optionally, the key connecting portion is provided with an internal thread.

Optionally, the connecting portion of the filter is provided with an external thread.

Optionally, at least one axially extending slit hole extends from an axially outward end of the key joint portion to an axially inner end of the entire thread of the key joint portion.

Optionally, at least one axially extending slotted hole is at least two axially extending slotted holes spaced circumferentially around a connecting portion.

Optionally, at least two axially extending slit openings are spaced equidistantly.

Optionally, the connecting portion is oriented radially inward.

Optionally, at least one slit hole extending in the axial direction has a greater depth in the radial direction than the maximum thread depth at the connecting portion.

Optionally, at least one axially extending slotted hole is four axially extending slotted holes spaced circumferentially around a connecting portion.

Optionally, the four axially extending slit openings are spaced equidistantly.

Optionally, at least one axially extending slit hole extends in a circumferential direction, thereby forming at least a portion of a helix.

Optionally, at least one axially extending slit hole comprises an axially extending portion and a circumferential extending portion.

Optionally, at least one axially extending slit hole comprises a second axially extending portion extending from the circumferentially extending portion, thereby forming a stepped transition.

These and other features of the present invention are described in more detail below with reference to the accompanying drawings.

Brief Description of the Drawings

Figure 1 shows a partial perspective view of the proposed example of a filter element having a connecting section with slotted holes.

Figure 2 shows a top view of the proposed example of a filter element having a connecting section with slotted holes.

In FIG. 3A is a partial cross-sectional view of a proposed example of a filter element having a connecting portion with slotted holes.

In FIG. 3B is a partial cross-sectional view of another proposed example of a filter element having a connecting portion with inclined slit openings.

In FIG. 3C is a partial cross-sectional view of another proposed example of a filter element having a connecting portion with stepped slotted holes.

In FIG. 4 is a partial side view of the proposed example of a filter head having a connecting portion with protrusions.

In FIG. 5 shows a suggested example of a connecting portion of a filter element aligned with a mating connecting portion.

In FIG. 6 shows a suggested example of a connecting portion of a filter element aligned with a mating connecting portion and inserted from above.

In FIG. 7 shows a suggested example of a connecting portion of a filter element screwed onto a mating connecting portion.

In FIG. 8 shows a conventional filter element without slotted holes, which cannot accommodate the connecting portion with the protrusions of the proposed example of the filter head.

In FIG. 9 shows a proposed example of an adapter for converting the proposed example of a filter head into a conventional filter head.

In FIG. 10 is a cross-sectional view of an exemplary adapter for converting an exemplary filter head to a conventional filter head.

DETAILED DESCRIPTION OF THE INVENTION

In order to ensure that the appropriate type of filter is used in each application, the proposed example of filter heads may prevent the screw from being screwed on by inappropriate filtering by fitting onto the protrusion. One or more protrusions located in front of the thread on the filter head may fit into corresponding slotted holes or grooves in the thread of the proposed examples of filter elements. After pushing over the protrusions, the filter element can be screwed on as usual. The proposed examples of assemblies can also prevent the filter from accidentally falling if the thread did not “grab” during the first rotation or in the final phase of thread separation during filter removal: if the thread is not engaged and the installer installing the filter element releases it, the filter element can - still be held on the filter head, as the threads on the filter element will be caught by the protrusions on the filter head. Finally, this system can be used to align the threads of the filter element with the threads of the filter head by determining their initial relative positions based on the positions of the keys and slotted holes, thereby facilitating the installation of the filter element.

Returning to FIG. 1-3A, the proposed example of a filter element is shown at number 10 in the form of a filter cartridge. The filter element comprises a container 21 and an end cap 23 enclosing the filter medium 22.

The container 21 may take the form of a generally cylindrical shell with an open end and an opposite closed end. The container 21 may be made, for example, of drawn metal (e.g. steel), and / or may be formed integral. The rim 31 surrounds the open end of the container and is shaped to accommodate the end cap 23, which, for example, can be attached and sealed by a rolling operation on the interface between the end cap and the container. Alternative accommodation options known in the art are also possible.

The filter medium 22 may be any suitable filter medium known in the art, and is depicted herein as a cylindrical assembly or a ring of longitudinal folds, for example, and may surround the central axis of the filter element and form a central cavity 25. In addition, the filter medium 22 may be spaced apart from the container 21, forming an external chamber 29.

The end cap 23 may be annular and includes a Central hole 26 in the Central cavity. The end cap 23 may also comprise one or more side openings 27 (typically a plurality of equidistant spaced openings) spaced laterally from the outside of the central hole. The proposed example embodiment, depicted here, contains eight such holes 27, equidistant spaced around the end cap. Openings laterally spaced laterally from the outside may preferably be inlets to the filter, with a central aperture 26 acting as an outlet. However, the opposite arrangement is also possible. As shown, the outer holes 27 are in fluid communication with the outer chamber 29, so that the fluid entering the container will flow into the outer chamber 29, pass through the filter medium into the central cavity 25, and then flow out of the central hole 26.

The end cap 23 may comprise an axially oriented outwardly oriented annular sealing element 32, which seals the filter element with the filter head after screwing on.

The Central hole 26 contains a threaded connecting section 40 to enable screwing of the filter element onto the connecting section 140 with a mating thread on the filter head 110. The connecting portion 40 of the Central hole 26 contains at least one axially extending slit hole 42, radially remote from the connecting section. The proposed example of a filter element is depicted as having four such slit openings 42, but any number of slit openings can be used.

Slotted holes are mainly oriented radially, passing in the direction along the circumference of the flat sections. The threaded portions 48 extend in a circumferential direction from the flat portions to allow screwing of the element onto the mating portion on the filter head. Flat sections (or slotted holes that pass through the thread of the connecting portion) allow the mating protrusions of the connecting portion of the filter head to slide past the thread without colliding with the thread. In other words, slotted holes or flat sections act as a key to allow screwing of the filter element onto the “locked” filter head.

Slotted holes 42 extend axially from start to finish through the threads of the connecting portion. In the proposed examples of filter elements in which the entire connecting portion is threaded or in which the slotted holes have a depth different from the depth of the thread, the slotted holes 42 can extend from the axially outer end of the connecting portion to the axially inner end of the connecting portion. In a situation in which slotted holes extend radially deeper than the thread, there may also be an annular groove around the inner side in the axial direction of the connecting portion to accommodate the protrusions of the filter head while screwing the filter element.

Slot holes are described as having a “flat” portion. “Flat,” as used herein, encompasses any portion that is recessed so as to allow the protrusion to pass through the thread. In particular, such a recessed or “flat” portion may be flat both in the axial direction and in the circumferential direction. Alternatively, this recessed portion may be flat along the axial direction, but include a curved annular surface that may have the same radius of curvature as the center hole, or another radius of curvature.

In addition, slotted holes are shown in FIG. 3A as passing simply in the axial direction (although they have a length in the circumferential direction). Now referring to FIG. 3B, the proposed example of an embodiment of the filter element designated 210 is shown. The filter 210 is substantially the same as the above filter element 10, and therefore, the same reference numbers are used, but with an index of 200, to indicate structures corresponding to similar structures in the filter element. In addition, the above description of the filter element 10 is equally applicable to the filter element 210, except as indicated below. In addition, after reading the description, it should be understood that aspects of the filter element can be replaced by each other or used in combination with each other, if applicable. In particular, the filter element 210 comprises slotted openings 242 that are inclined and thus extend both in the axial direction and in the circumferential direction, and therefore form at least part of a helical line, as shown in FIG. 3B.

Now referring to FIG. 3C, a proposed example of an embodiment of a filter element designated 310 is shown. The filter 310 is substantially the same as the above filter elements 10 and 210, and therefore the same reference numbers are used, but with an index of 300, to indicate structures, corresponding to similar constructions in the filter element. In addition, the above description of the filter elements 10 and 210 is equally applicable to the filter element 310, except as indicated below. In addition, after reading the description, it should be understood that aspects of the filter element can be replaced by each other or used in combination with each other, if applicable. Alternatively, or in addition to the slit openings 42 and 242 described above, the slit openings 342 may include one or more curved or stepped transitions, as shown in FIG. 3C, in which a part extending either generally in the axial direction or in a circumferential direction goes into a portion extending in the opposite direction. Thus, as shown, the slit openings 342 may include a first axially extending portion 343, a first circumferentially extending portion 345 extending from the first axially extending portion 343, and a second axially extending portion 347 extending from the extending in the direction along the circumference of the plot 345.

It is also contemplated that the proposed examples of slit openings may transition from axially extending outward to axially extending inward before going back axially outward. Such a configuration may require the proposed filter example to be pushed, pivoted, partially pulled, pivoted and pushed again before the threads can engage. These configurations are provided as examples only and should not be construed as limiting.

The slotted openings 42, 242, 342 may be spaced around the circumference around the connecting portion equidistantly, as shown, or nonequidistantly. A non-equidistant arrangement can provide the only “correct” orientation when installing the filter element.

Although shown as being oriented radially inward, the connecting portion (and therefore threads and slotted holes) can also be oriented radially outward and can engage with the mating connecting portion on the filter head.

Turning in particular to FIG. 4, a portion of the filter head is shown, designated 110. The filter head may be any conventional housing that accommodates screw-on filters, such as, for example, part of a manifold, except for the differences described herein. Suggested examples of filter heads include an annular threaded connecting portion 140, which has a threaded portion 142 and a locking portion 144. Blocking section 144 extends axially outward (from the filter head and in the direction of the filter element) from the threaded section and contains one or more protrusions 146 that protrude radially from the side walls of the blocking section.

As shown in the proposed example of the embodiment of FIG. 4, the protrusions can protrude radially outward, although, instead, they can also protrude radially inward. In any case, the protrusions should be on the same radial side as the thread of the threaded section.

As shown, the profile of the protrusion 146 may include rounded axial angles to facilitate insertion into the slotted holes, however, other profiles are also possible. The protrusions 146 may have a peripheral curve at the radial end to align with the corresponding peripheral curve on the flat surface of the slit holes. Alternatively, the protrusions 146 may include a flat radial end. In addition, other profiles, such as those required by the customer, can be made. In addition, the protrusion may extend axially and / or in a circumferential direction and may extend, partially or completely, along a helix.

In addition, any number of protrusions is possible, in FIG. 4 shows a configuration having 4 equidistant spaced protrusions. The protrusions may be spaced equidistant or non-equidistant. A non-equidistant arrangement can provide the only acceptable orientation of the filter element screwed onto the filter head.

The protrusion (s) 146 should protrude far enough to ensure intersection with the thread on the conjugate filter element. Thus, in the proposed example of the embodiments, the protrusion 146 is the same as the maximum radial length of the thread of the threaded section 142, or further.

An example of the connecting portions 110 comprises a central opening 150 and one or more side openings (not shown) that are in fluid communication with the corresponding openings of the attached filter element.

Now referring to FIG. 5-7, a sequence of images is shown showing the attachments of the proposed example of the filter element to the proposed example of the filter head.

In FIG. 5 shows a suggested example of a connecting portion 40 of a filter element aligned with a mating connecting portion 140.

In FIG. 6 shows the proposed example of the connecting portion 40 of the filter element aligned with the mating connecting portion 140 and inserted above it. In particular, protrusions 146 are inserted through slotted openings 42.

In FIG. 7 shows the proposed example of the connecting portion 40 of the filter element screwed onto the mating connecting portion 140. In other words, the filter element is now engaged by means of a threaded connection to the filter head, with the protrusions 146 passing through the slotted holes 42 and the corresponding threaded portions are mutually engaged with each other after being rotated relative to each other in the direction of engagement (for example, clockwise) after the initial alignment of the thread.

In FIG. 8 shows a conventional filter element without slotted holes 42, which cannot accommodate the connecting portion with the protrusions of the proposed example of the filter head.

Now with reference to FIG. 9 and 10 show a proposed example of a filter head adapter 410, which may be configured to secure a conventional filter to a proposed example of a filter head. This adapter 410 contains a key connecting portion 440 with any of the characteristics described above with respect to the connecting sections of the proposed examples of filter elements. In particular, the key connecting portion 440 allows screwing the filter adapter onto the connecting portion 140 with the mating thread of the filter head 110. The connecting portion 440 of the adapter 410 comprises at least one axially extending slit hole 442 radially remote from the connecting portion.

Additionally, the adapter 410 includes a threaded filter connecting portion 480 configured to allow screwing of a conventional filter onto the filter adapter and, therefore, onto the filter head.

An example of the filter connecting portion 480 is shown to be axially offset from the key connecting portion 440, although this does not have to be the case, for example, in those cases in which the screw-on filter has a different size than the corresponding filter head connection. An additionally proposed example of the filter connecting portion 480 is shown with an external thread, while the key connecting portion 440 is shown with an internal thread, however, they can be changed, or both can have an internal thread, or both can have an external thread, depending on the desired connection.

Although the invention has been shown and described with respect to a particular embodiment or embodiments, it is obvious that equivalent changes and modifications will be made by those skilled in the art after studying and understanding this description and the accompanying drawings. In particular, in relation to the various functions performed by the above-described elements (components, assemblies, devices, compositions, etc.), the terms (including a reference to “means”) used to describe these elements correspond, unless otherwise indicated, to any an element that performs the specified function of the described element (i.e., is the functional equivalent), even if it is structurally not equivalent to the disclosed structure, which performs the function in the illustrated example of the proposed example embodiments or embodiments of the invention. In addition, while a specific feature of the invention could be described above with respect to only one or more of the several illustrated embodiments, such a feature may be combined with one or more other features of other embodiments, as may be necessary or preferred for any given or specific application.

Claims (15)

1. The filter element containing:
a ring of the filter medium surrounding the central axis and forming the central cavity; and
an annular end cap connected to be sealed at the end of the medium, wherein the end cap comprises a central hole in the central cavity and a side hole spaced laterally from the outside of the central hole, wherein the central hole contains a threaded connection portion to allow threaded connection element with a connecting section with a mating thread on the filter head, and the connecting section of the Central hole contains at least one o a slit hole extending both in the axial direction and in a circumferential direction, and the hole is radially remote from the connecting portion.
2. The filter element according to claim 1, characterized in that at least one slotted hole extends from an axially outer end of the connecting portion to an axial inner end of the connecting portion.
3. The filter element according to any one of the preceding paragraphs, characterized in that at least one slotted hole is at least two slotted holes spaced around the circumference around the connecting section.
4. The filter element according to any one of paragraphs. 1 or 2, characterized in that the connecting section is oriented radially inward.
5. The filter element according to any one of paragraphs. 1 or 2, characterized in that at least one slotted hole has the same depth in the radial direction as the maximum thread depth at the connecting section.
6. The filter element according to any one of paragraphs. 1 or 2, characterized in that the threaded connecting portion forms a Central hole, and at least one slotted hole extends from the axially external end of the Central hole to the axially internal end of the Central hole.
7. The filter element according to any one of paragraphs. 1 or 2, characterized in that at least one slotted hole passes through the thread of the connecting section.
8. A filter element containing:
a ring of the filter medium surrounding the central axis and forming the central cavity; and
an annular end cap connected to be sealed at the end of the medium, wherein the end cap comprises a central hole in the central cavity and a side hole spaced laterally from the outside of the central hole, wherein the central hole contains a threaded connection portion to allow threaded connection element with a connecting section with a mating thread on the filter head, and the connecting section of the Central hole contains at least one o a slot hole radially remote from the connecting portion, wherein at least one slot hole forms at least a portion of a helix.
9. A filter assembly comprising:
i) a filter head having an annular connecting portion forming an axis of connection, and
ii) a filter element according to any one of the preceding paragraphs, wherein the connecting portion of the filter head includes a threaded portion having a thread mating with the threaded connecting portion of the central hole, and a locking portion axially outward from the threaded portion, wherein the locking portion has at least at least one radially protruding protrusion with such dimensions as to fit into at least one slotted opening of the connecting portion when the filter element is threaded to the heads Filter oh.
RU2016143163A 2014-04-07 2014-04-07 Keyed thread engagement on screw-on filter element RU2663044C2 (en)

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PCT/US2014/033173 WO2015156760A1 (en) 2014-04-07 2014-04-07 Keyed thread engagement on spin-on filter element

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RU2339427C1 (en) * 2006-12-14 2008-11-27 Георгий Анатольевич Колтунов Oil filter
EP2139578B1 (en) * 2007-03-26 2013-12-25 Parker-Hannifin Corporation Spin-on filter cartridge
RU95036U1 (en) * 2010-02-05 2010-06-10 Открытое акционерное общество Концерн "Цитрон" filter element
RU116065U1 (en) * 2011-09-09 2012-05-20 Общество с ограниченной ответственностью "Полтавское научно-техническое предприятие КОЛАН" Oil cleaning filter

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RU2016143163A3 (en) 2018-05-07
CN106457077B (en) 2019-11-12
WO2015156760A1 (en) 2015-10-15
CN106457077A (en) 2017-02-22
RU2016143163A (en) 2018-05-07

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