AU2018205135A1 - Anti-airlock valve assembly - Google Patents
Anti-airlock valve assembly Download PDFInfo
- Publication number
- AU2018205135A1 AU2018205135A1 AU2018205135A AU2018205135A AU2018205135A1 AU 2018205135 A1 AU2018205135 A1 AU 2018205135A1 AU 2018205135 A AU2018205135 A AU 2018205135A AU 2018205135 A AU2018205135 A AU 2018205135A AU 2018205135 A1 AU2018205135 A1 AU 2018205135A1
- Authority
- AU
- Australia
- Prior art keywords
- pump
- valve
- housing
- vent hole
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
- F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Check Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
A pump, having a pump housing with an impeller arranged therein, features an anti-airlock valve assembly configured with a valve housing having a passageway configured with a vent hole to allow air to bleed out of the pump housing into the 5 atmosphere so liquid can fill the pump housing, rise and engage the impeller in order to get the pump running; and a valve ball arranged in the passageway, the valve ball configured to rest against one part of the passageway so air can pass out of the vent hole, and also configured to be light or buoyant enough to respond to the liquid filling the pump housing, float upwardly and rest against another part of the passageway 0 so as not to allow water to escape readily from the vent hole after the liquid rises to a sufficient level and substantially engages the impeller.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a pump; and more particularly, relates to a centrifugal 5 pump, e.g., including a bilge pump.
2. Description of Related Art
Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of 0 common general knowledge in the field.
A centrifugal pump cannot begin pumping water until its impeller is immersed in water. In the operation of the centrifugal pump, there are cases in which the impeller is prevented from engaging any water by air entrapped in the pump’s housing or body. This situation is known as air lock and is a problem in the art. In 5 view of this, there is a need for a way to prevent air lock, e.g., in centrifugal pumps.
SUMMARY OF THE INVENTION
To overcome this air lock condition, the pump must release this entrapped air, the air must be allowed to “bleed” out to the atmosphere allowing the 2 0 water to rise and engage the impeller. By way of example, a related patent application serial no. 14/193,269 (911-17.31-1//M-RLE-X0007), filed on 28 February 2014, which discloses a technique for solving the aforementioned air lock problem, is assigned to the assignee of the present application, and is incorporated by reference in its entirety. See also patent application serial no. 13/917,970, (911-17.28-2//M2 5 RLE-X0005), filed 14 June 2013, which discloses another technique for solving the
2018205135 12 Jul 2018 aforementioned air lock problem, is also assigned to the assignee of the present application, and which is also incorporated by reference in its entirety.
The instant application builds on the techniques set forth in the aforementioned related applications.
According to some embodiments, the present invention may take the form of a pump having a pump housing with an impeller arranged therein, featuring an antiairlock valve or valve assembly configured with a valve housing in combination with a valve ball. The valve housing may be configured with a passageway having a vent hole to allow air to bleed out of a chamber of the pump housing into the atmosphere so liquid can fill the pump housing, rise and engage the impeller in order to get the pump running. The valve ball may be arranged in the valve housing, configured to rest against one part of the valve housing so air can pass out of the vent hole, and also configured to be light or buoyant enough to respond to the liquid filling the pump housing, float upwardly and rest against another part of the valve housing so as not to allow water to escape readily from the vent hole after the liquid rises to a sufficient level and substantially engages the impeller.
According to some embodiments, the present invention may also include one or more of the following features:
The anti-airlock valve assembly may be configured in, or form an integral part 2 0 of, the pump housing.
The anti-airlock valve assembly may be configured on the discharge side of the pump, e.g., including forming part of a discharge chamber of the pump.
The anti-airlock valve assembly may be configured on the suction side of the pump, e.g., including forming part of a suction chamber of the pump.
2018205135 12 Jul 2018
The valve housing may include an upper valve seat configured with the vent hole; and a lower valve seat configured to contain the valve ball in the valve housing and allow air to bleed out of the pump housing into the atmosphere via the vent hole.
The upper valve seat may include a frustoconical wall configured to form part 5 of the passageway.
The frustoconical wall may include one end configured with a wide opening dimensioned to be larger in diameter than the valve ball; and another end configured with the vent hole dimensioned to be smaller in diameter than the valve ball, so that when the valve ball floats upwardly and seals against part of the frustoconical wall, water cannot escape readily from the vent hole after the liquid rises to the sufficient level and substantially engages the impeller.
The valve ball may be configured to respond to a suction discharge pressure once the pump is running and seal against the lower valve seat in order to prevent air from passing from the atmosphere into a suction discharge chamber of the pump housing.
The pump may be configured as a centrifugal pump, e.g., for use as a bilge pump, including where the bilge pump has an outlet nozzle having a backflow preventer assembly coupled thereto with a duckbill-type check valve arranged therein to allow only liquid flow in only one direction, consistent with that disclosed in
0 patent application serial no. 14/193,324 (911-17.32-1//M-RLE-X0008), filed on 28 February 2014, and incorporated by reference in its entirety.
These and other features, aspects, and advantages of embodiments of the invention will become apparent with reference to the following description in conjunction with the accompanying drawing. It is to be understood, however, that
2018205135 12 Jul 2018 the drawing is designed solely for the purposes of illustration and not as a definition of the limits of the invention.
According to an aspect of the present invention there is provided a pump having a pump housing with an impeller arranged therein, comprising:
an anti-airlock valve assembly configured with a valve housing having a passageway configured with a vent hole to allow air to bleed out of a chamber of the pump housing into the atmosphere so liquid can fill the pump housing, rise and engage the impeller in order to get the pump running; and a valve ball arranged in the valve housing, the valve ball configured to rest against one part of the valve housing so air can pass out of the vent hole, and also configured to be light or buoyant enough to respond to the liquid filling the pump housing, float upwardly and rest against another part of the valve housing so as not to allow water to escape readily from the vent hole after the liquid rises to a sufficient level and substantially engages the impeller.
Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the
0 sense of “including, but not limited to”.
It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
2018205135 12 Jul 2018
BRIEF DESCRIPTION OF THE DRAWING
The drawing, which is not necessarily to scale, include the following Figures:
Figure 1a is a diagram of a centrifugal pump equipped with a discharge type 5 anti-lock valve or valve assembly, according to some embodiments of the present invention.
Figure 1b is a more detailed view of the discharge type anti-lock valve of the centrifugal pump in Figure 1a.
Figure 2a is a diagram of a centrifugal pump equipped with a suction type 0 anti-lock valve or valve assembly, according to some embodiments of the present invention.
Figure 2b is a more detailed view of the suction type anti-lock valve of the centrifugal pump in Figure 2a.
In the following description of the exemplary embodiment, reference is made 5 to the accompanying drawing, which form a part hereof, and in which is shown by way of illustration of an embodiment in which the invention may be practiced. It is to be understood that other embodiments may be utilized, as structural and operational changes may be made without departing from the scope of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
To overcome the aforementioned air lock problem, the pump must be configured to release the entrapped air in the pump housing. In effect, the air must be allowed to “bleed” out to the atmosphere surrounding the pump allowing the water to rise and engage the impeller. The anti-airlock valve assemblies disclosed herein
5 allow this release of the entrapped air to occur.
2018205135 12 Jul 2018
By way of example, Figures 1a and 2a show the present invention in the form of a pump generally indicated as 10, 10' having the pump housing B with the impeller A arranged therein. The pump 10, 10' may be configured with an anti-airlock valve (also known as an anti-airlock valve assembly) generally indicated as D, D' in 5 Figures 1a and 2a, each configured with a valve housing generally indicated as 12, 12' in combination with a valve ball G, H as shown in Figures 1b and 2b. The valve housing 12, 12' may be configured with a passageway 14, 14' having a vent hole 16 to allow air to bleed out of a chamber 11 of the pump housing B into the atmosphere surrounding the pump so liquid can fill the pump housing B, rise and engage the 0 impeller A in order to get the pump 10, 10' running. The valve ball G, H may be arranged in the valve housing 12, 12', configured to rest against a lower part of the valve housing 12, 12' so air can pass out of the vent hole 16, and also configured to be light or buoyant enough to respond to the liquid filling the pump housing B, float upwardly and rest against an upper part of the valve housing 12, 12' so as not to 5 allow water to escape readily from the vent hole 16 after the liquid rises to a sufficient level and substantially engages the impeller A. By way of example, in operation pressurized air in the chamber 11 may cause the valve ball G, H to lift so as to enable the air to pass around the valve ball G, H, through the passageway 14, 14' of the valve D, D', and out the vent hole 16 to the atmosphere surrounding the 20 pump 10, 10'.
By way of example, the valve housing 12, 12' may be configured with an upper valve seat 20, 20' configured with the vent hole 16; and a lower valve seat 22, 22' configured to contain the valve ball G, H in the valve housing 12, 12' and allow air to bleed out of the chamber of the pump housing B into the atmosphere via the vent
5 hole 16, consistent with that shown in Figures 1b, 2b.
2018205135 12 Jul 2018
Consistent with that shown in Figure 1b, the upper valve seat 20 may include a frustoconical wall 24 configured to form one part of the passageway 14, and the lower valve seat 22 may include a frustoconical wall 26 also configured to form another part of the passageway 14. The frustoconical wall 24 may include one end 5 24a configured with a wide opening dimensioned to be larger in diameter than the valve ball G; and another end 24b configured with the vent hole 16 dimensioned to be smaller in diameter than the valve ball G, so that when the valve ball G floats upwardly and seals against part of the frustoconical wall 24, water cannot escape readily from the vent hole 16 after the liquid rises to the sufficient level and 0 substantially engages the impeller A. The frustoconical wall 26 has an end 26a configured with an opening dimensioned to be smaller in diameter than the valve ball G to prevent the valve ball G from escaping the valve housing 12.
Consistent with that shown in Figure 2b, the upper valve seat 20' may include a wall 28 configured to form one part of the passageway 14', and the lower valve 5 seat 22' may include a frustoconical wall 30 configured to form another part of the passageway 14'. The upper valve seat 20' and the lower valve seat 22' are configured with corresponding openings dimensioned to allow the air out of the valve housing 12' and keep the valve ball H in the valve housing 12', similar to that set forth above in relation to Figure 1b.
0 In particular, Figure 1a shows the pump 10 in the form of a centrifugal pump equipped with a discharge type anti-airlock valve C located on the pump’s discharge E. When the pump 10 is activated, the impeller A causes the air pressure to rise in the pump's discharge chamber 11. This pressurized air escapes through the vent hole 16 in the valve D and water begins to fill the pump chamber 11. Once the
5 impeller A is adequately submerged in the rising water, it will begin to push water
2018205135 12 Jul 2018 through the pump 10 and out the pump discharge E. With water being pushed through the pump 10, the valve ball G is forcibly pressed against the top of the valve D creating a seal which prevents water from escaping out the vent hole 16. See Figure 1b for an enlarged and more detailed view of the discharge anti-airlock valve 5 design shown in Figure 1a.
In comparison, Figure 2a shows the pump 10' in the form of a low profile centrifugal pump having the valve D' located at the pump’s intake F. This pump configuration is basically useful when the central axis of the pump 10' is parallel to the plane of the surface of the water to be pumped. In this situation, the air is allowed to bleed out due to increased pressure of the air in the intake chamber 11' from the turning of the impeller A. Once water is flowing, this intake area is at a negative pressure relative to the atmosphere surrounding the pump 10' and the valve ball H is forced inwards to the bottom of the valve D' creating a seal. See Figure 2b for a detailed view of the intake anti-airlock valve design.
In effect, the present invention provides anti-airlock valve assembly in two different forms, e.g., including discharge and suction types. In each type, the antiairlock valve assembly includes the valve housing 12, 12' having the upper valve seat 20, 20' for the valve ball G, H to set under the water pressure preventing any water to escape through the vent hole 16. In each type, the anti-airlock valve
0 assembly also includes the valve ball G, H that is constructed light enough to allow air to escape yet will easily be forced upward (or downward in the case of the intake valve) to seat against the upper valve housing seat 20, 20' not allowing water to escape readily.
According to some embodiments, a pump housing receptacle may be
5 configured for receiving the valve housing 12, 12', including where it is an integral
2018205135 12 Jul 2018 part of the pump 10,1 O', has suitable mating, and also has a diameter and dimensioning for allowing the valve housing 12, 12' to be securely held to the pump housing B.
The lower valve ball seat 22, 22' is integral to the overall geometry and valve 5 configuration by preventing the valve ball G, H from escaping yet allowing air to escape through the vent hole 16 in the pump housing outlet.
Pump, like that shown in Figures 1a and 2a, may also include, e.g., other parts, elements, components, or circuits that do not form part of the underlying invention, including a motor, diaphragm pumping components, pressure transducers, 0 wiring for coupling the motor to a control circuit, and are thus not identified and described in detail herein.
Moreover, pumps having motors and impeller arranged or configured thereon are known in the art, and the scope of the invention is not intended to be limited to any particular type or kind thereof either now known or later developed in the future.
See also another related patent application serial no. 14/193,324 (911-17.321//M-RLE-X0008), filed on 28 February 2014, showing the same pump as that shown in Figures 1a and 1b herein, which discloses a technique for using a duckbill-type check valve for solving a backflow problem, is assigned to the assignee of the present application, and is incorporated by reference in its entirety.
Possible Applications:
Possible applications are envisioned to include any type or kind of pump or rotary equipment that may be submerged and contain trapped air, e.g., in its housing or impeller housing, including but not limited to centrifugal pumps or other types or
2018205135 12 Jul 2018 kinds of submersible pumps either now known or later developed in the future, including bilge pumps or utility pumps.
Scope of the Invention
Although described in the context of particular embodiments, it will be apparent to those skilled in the art that a number of modifications and various changes to these teachings may occur. Thus, while the invention has been particularly shown and described with respect to one or more preferred embodiments thereof, it will be understood by those skilled in the art that certain modifications or changes, in form and shape, may be made therein without departing from the scope and spirit of the invention as set forth above.
2018205135 12 Jul 2018
Claims (4)
- WE CLAIM:1. A pump having a pump housing with an impeller arranged therein, comprising:an anti-airlock valve assembly configured with 5 a valve housing having a passageway configured with a vent hole to allow air to bleed out of a chamber of the pump housing into the atmosphere so liquid can fill the pump housing, rise and engage the impeller in order to get the pump running: and a valve ball arranged in the valve housing, the valve ball configured to 0 rest against one part of the valve housing so air can pass out of the vent hole, and also configured to be light or buoyant enough to respond to the liquid filling the pump housing, float upwardly and rest against another part of the valve housing so as not to allow water to escape readily from the vent hole after the liquid rises to a sufficient level and substantially engages the5 impeller.
- 2. A pump according to claim 1, wherein the anti-airlock valve assembly is configured in, or forms an integral part of, the pump housing.2 0 3. A pump according to claim 1, wherein the anti-airlock valve assembly is configured on the discharge side of the pump.4. A pump according to claim 1, wherein the anti-airlock valve assembly is configured on the suction side of the pump, including forming part of a suction2 5 chamber of the pump.2018205135 12 Jul 20185. A pump according to claim 1, wherein the valve housing comprises: an upper valve seat configured with the vent hole; and a lower valve seat configured to contain the valve ball in the valve housing and allow air to bleed out of the pump housing into the atmosphere via the vent hole.6. A pump according to claim 5, wherein the upper valve seat comprises a frustoconical wall configured to form part of the passageway.7. A pump according to claim 6, wherein the frustoconical wall comprises0 one end configured with a wide opening dimensioned to be larger in diameter than the valve ball; and another end configured with the vent hole dimensioned to be smaller in diameter than the valve ball, so that when the valve ball floats upwardly and seals against part of the 5 frustoconical wall, water cannot escape readily from the vent hole after the liquid rises to the sufficient level and substantially engages the impeller.8. A pump according to claim 1, wherein the pump comprises an outlet nozzle having a backflow preventer assembly coupled thereto with a duckbill-type check2 0 valve arranged therein to allow only liquid flow in only one direction.9. A pump according to claim 5, wherein the valve ball is configured to respond to a suction discharge pressure once the pump is running and seal against the lower valve seat in order to prevent air from passing from the atmosphere into a2 5 suction discharge chamber of the pump housing.2018205135 12 Jul 2018 ο2018205135 12 Jul 2018PCT/US2015/017177WO 2015/130620
- 3/42018205135 12 Jul 2018Φ _>Π3 >o o'nsI cΠ3ΦQ_ >.I co o=s ωΌΦQ_Q_ crΦQ_E =sQ.O) =S cΦOIOSCMΦ =SO)LLPCT/US2015/017177WO 2015/130620
- 4/42018205135 12 Jul 2018CM oco
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2018205135A AU2018205135A1 (en) | 2014-02-28 | 2018-07-12 | Anti-airlock valve assembly |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/193,210 US20150247501A1 (en) | 2014-02-28 | 2014-02-28 | Anti-airlock valve assembly |
US14/193,210 | 2014-02-28 | ||
AU2015223265A AU2015223265A1 (en) | 2014-02-28 | 2015-02-24 | Anti-airlock valve assembly |
PCT/US2015/017177 WO2015130620A2 (en) | 2014-02-28 | 2015-02-24 | Anti-airlock valve assembly |
AU2018205135A AU2018205135A1 (en) | 2014-02-28 | 2018-07-12 | Anti-airlock valve assembly |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2015223265A Division AU2015223265A1 (en) | 2014-02-28 | 2015-02-24 | Anti-airlock valve assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2018205135A1 true AU2018205135A1 (en) | 2018-08-02 |
Family
ID=54006569
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2015223265A Abandoned AU2015223265A1 (en) | 2014-02-28 | 2015-02-24 | Anti-airlock valve assembly |
AU2018205135A Abandoned AU2018205135A1 (en) | 2014-02-28 | 2018-07-12 | Anti-airlock valve assembly |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2015223265A Abandoned AU2015223265A1 (en) | 2014-02-28 | 2015-02-24 | Anti-airlock valve assembly |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150247501A1 (en) |
EP (1) | EP3111093A4 (en) |
CN (1) | CN106104002A (en) |
AU (2) | AU2015223265A1 (en) |
CA (1) | CA2940847A1 (en) |
WO (1) | WO2015130620A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105143679B (en) * | 2013-03-19 | 2018-07-06 | 流量控制有限责任公司 | The low profile pump that can be installed in various constructions |
IT201900012861A1 (en) * | 2019-07-25 | 2021-01-25 | Dab Pumps Spa | ELECTRIC PUMP WITH PERFECTED AIR VENT DEVICE |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1993268A (en) * | 1929-08-16 | 1935-03-05 | Ferguson Charles Hiram | Centrifugal pump |
US1944249A (en) * | 1933-05-19 | 1934-01-23 | John K Lencke | Protective device for hose lines |
US2144613A (en) * | 1935-03-19 | 1939-01-24 | Laval Steam Turbine Co | Priming system for centrifugal pumps |
US2757616A (en) * | 1953-01-21 | 1956-08-07 | Waterous Co | Priming valve for a centrifugal pump |
US3769779A (en) * | 1971-09-27 | 1973-11-06 | Smith International | Degassing apparatus |
US3915351A (en) * | 1974-08-19 | 1975-10-28 | Alexander Enrico Kiralfy | Cordless electrically operated centrifugal pump |
US5095880A (en) * | 1991-08-22 | 1992-03-17 | Ricks Robert C | Air purging and shut-down system for diesel engines |
NL9401455A (en) * | 1994-09-07 | 1996-04-01 | Andre S J Van Coillie En Johan | Self-priming centrifugal pump-vacuum pump combination for, among other things, liquid fuels such as petrol, gasoil, kerozene, etc. with improved deaerator and integrated evaporation recovery option. |
US5472054A (en) * | 1995-02-09 | 1995-12-05 | Hinds; Arron C. | Free pumping apparatus safety valve system and method |
DE19832827C1 (en) * | 1998-07-21 | 2000-02-24 | Bosch Gmbh Robert | Device for fuel delivery by means of a fuel delivery unit arranged in a housing |
US6390780B1 (en) * | 1998-09-24 | 2002-05-21 | Rule Industries, Inc. | Pump and controller system and method |
GB9901547D0 (en) * | 1999-01-26 | 1999-03-17 | H J Godwin Limited | Improvements in or relating to pumps |
US6206632B1 (en) * | 1999-03-26 | 2001-03-27 | Timothy D. Gallus | Bleed tube for centrifugal pump and method for retrofitting same |
JP4273254B2 (en) * | 2002-06-25 | 2009-06-03 | Smc株式会社 | Immersion pump with improved start-up discharge performance |
DE10346196A1 (en) * | 2002-10-12 | 2004-04-22 | Laing, Oliver | Centrifugal circulation pump, e.g. for water, has degasifying device including gas line coming out at one end to pump wheel and at other end to low pressure region |
DE502005000662D1 (en) * | 2005-01-22 | 2007-06-14 | Elze Waggonbau Gmbh & Co Kg | Valve for draining cargo containers, etc. |
CA2567670A1 (en) * | 2006-11-09 | 2008-05-09 | Gotohti.Com Inc. | Autoclavable piston guide ring |
US7762273B2 (en) * | 2007-06-29 | 2010-07-27 | Olab S.R.L. | Venting device |
US8672289B2 (en) * | 2008-04-21 | 2014-03-18 | Pride Technologies International Pty Ltd | Domestic water tap or faucet with floating buoyant ball valve and activation rod |
US8276616B2 (en) * | 2009-03-20 | 2012-10-02 | Xylem Ip Holdings Llc | High pressure duckbill valve and insert |
-
2014
- 2014-02-28 US US14/193,210 patent/US20150247501A1/en not_active Abandoned
-
2015
- 2015-02-24 EP EP15754789.4A patent/EP3111093A4/en not_active Withdrawn
- 2015-02-24 CA CA2940847A patent/CA2940847A1/en not_active Abandoned
- 2015-02-24 CN CN201580015487.3A patent/CN106104002A/en active Pending
- 2015-02-24 AU AU2015223265A patent/AU2015223265A1/en not_active Abandoned
- 2015-02-24 WO PCT/US2015/017177 patent/WO2015130620A2/en active Application Filing
-
2018
- 2018-07-12 AU AU2018205135A patent/AU2018205135A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2015130620A3 (en) | 2015-11-26 |
EP3111093A2 (en) | 2017-01-04 |
WO2015130620A2 (en) | 2015-09-03 |
US20150247501A1 (en) | 2015-09-03 |
EP3111093A4 (en) | 2017-11-22 |
CA2940847A1 (en) | 2015-09-03 |
CN106104002A (en) | 2016-11-09 |
AU2015223265A1 (en) | 2016-09-15 |
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Legal Events
Date | Code | Title | Description |
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MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |