US3920352A - Pump with plastic housing - Google Patents

Pump with plastic housing Download PDF

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Publication number
US3920352A
US3920352A US463661A US46366174A US3920352A US 3920352 A US3920352 A US 3920352A US 463661 A US463661 A US 463661A US 46366174 A US46366174 A US 46366174A US 3920352 A US3920352 A US 3920352A
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US
United States
Prior art keywords
suction
wall means
housing
chamber
opening
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.)
Expired - Lifetime
Application number
US463661A
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English (en)
Inventor
Walter Speck
Oskar Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPECK PUMPEN
Original Assignee
SPECK PUMPEN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19732321165 external-priority patent/DE2321165C3/de
Application filed by SPECK PUMPEN filed Critical SPECK PUMPEN
Application granted granted Critical
Publication of US3920352A publication Critical patent/US3920352A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced

Definitions

  • This Separation portion of the housing is formed with a suction opening through which the sucg 415/200 415/ g g 2 tion chamber communicates with the pressure cham- [581 214 ber.
  • the suction portion of the housing is preferably are 5 l G of a cylindrical configuration and is circular in cross l 00 section, the suction portion being formed with an opening at the top of the housing and the suction [56] References Clted chamber tapering inwardly from the top of the hous- UNITED STATES PATENTS ing and being free of any undercuts.
  • the pressure por- 1,9s1,025 l 1/1934 Bird 415/121 0 tion is formed with an opening at a location other than 2,008,308 7/1935 Jacobsen.... 415/53 the sides of the housing and also defines a pressure 2, 8/1946 LaBour 121 G chamber which is free of undercuts.
  • the separation 5 232 3 4/1953 PP 415/214 portion tangentially intersects the suction portion 5 53 3 3 where these portions are integral with each other.
  • FIGA A first figure.
  • the present invention relates to pumps.
  • the present invention relates to pump housings which are made of plastic material and which are particularly suitable for circulating pumps to be used in swimming pools, such pumps having a suction chamber, a pressure chamber, and a separation wall situated between and separating these chambers from each other, with the pressure chamber communicating through a suction opening with the suction chamber.
  • Pump housings of the above type have up to the preshousings. Also, the stability or accuracy of pump housings having components which are adhered or welded to each other are frequently inadequate, and this latter inadequacy is a particular serious disadvantage in that the pump housing is subjected during operation to strong pressure pulses resulting from, for example, the
  • a further advantage of conventional pump housings havingcomponents which are adhered to each other resides inthe fact that such adhered connections often are inadequate to withstand temperature fluctuations, a
  • pump housings composed of parts which are adhered-or welded to each other suffer from the further serious disadvantage that as a result of the connection of the individual housing components by adhesive or welding, the use of reinforced plastic, particularly plastic reinforced with glass fibers, is excluded since such reinforced plastic, if it is used at all, can be adhered or welded only with extremely high cost and with poor results.
  • pump housings of the above type where the individual housing components are assembled together and united by fasteners such as bolts and nuts.
  • fasteners such as bolts and nuts.
  • pump housings require an extremely large number of such fasteners, which undesirably increases the cost of manufacture and renders the construction undesirably complex, so that to this extent these constructions are disadvantageous.
  • pump housings having components bolted together, or held together by screws present sealing problems.
  • a pump housing which can be made of a plastic which is reinforced with glass fibers.
  • the pump includes a one-piece plastic pump housing having a suction wall means which defines a suction chamber, a pressure wall means which defines a pressure chamber, and a separation wall means separating the suction chamber and pressure chamber from each other and being integral with the suction wall means and the pressure wall means, this separation wall means being formed with a suction opening through which the pressure chamber communicates with the suction chamber.
  • FIG. 1 is a sectional elevation of a pump according to the present invention, the pump housing being shown in FIG. 1 assembled with other elements of the pump and the plane of FIG. 1 containing the axis of the impeller;
  • FIG. 2 is a sectional elevation taken in the same plane as FIG. 1 but showing only the pump housing of the present invention
  • FIG. 3 is a top plan view of the housing of FIG. 2, FIG. 3 also showing fragmentarily parts of a filter;
  • FIG. 4 is an end elevation of the housing of FIG. 2 as seen from the left of FIG. 2.
  • the embodiment of the present invention which is illustrated in the drawings includes a suction wall means 2 which defines a suction chamber 1.
  • This suction chamber 1 is of a substantially cylindrical configuration, being circular in section.
  • the suction wall means 2 defines a suction chamber 1 which is formed with an opening at the top of the housing which is shown by itself in FIGS. 2-4.
  • the one-piece plastic body which forms the pump housing shown in FIGS. 2-4 includes also a pressure wall means 4a defining a pressure chamber 4 which is formed with an opening at the rear of the pump housing, and it will be noted particularly from FIG. 4 that the pressure chamber 4 does not open at the opposed sides of the pump housing with the pressure chamber 4 having in cross section the configuration clearly apparent from FIG. 4, namely a cross section according to which the pressure chamber 4 has opposed concave substantially vertically extending inner surfaces merging into a top surface and merging into an upwardly directed concave bottom surface.
  • the suction chamber 1 and the pressure chamber 4 are separated from each other by a separation wall means 3 which is illustrated in FIGS. 3 and 4.
  • the separation wall means 3 is in the form of a vertical substantially flat wall having its left surface, as viewed in FIG. 3, defining part of the pressure chamber 4, this left 3 surface of the wall 3 of FIG. 3 being visible in FIG. 4.
  • the flat vertical separation wall means 3 extends tangentially with respect to the cylindrical wall means 2 which defines the suction chamber 1, with thewalls 2 and 3 being integral with each other at the location where the wall 3 tangentially intersects the wall 2.
  • the common wall structure is formed with a suction opening 5 through which the pressure chamber 4 communicates with the suction chamber 1 so as to be supplied with liquid through the suction opening 5.
  • the suction wall means 2 is formed with a suction inlet through which liquid enters into the pump.
  • the wall means 2 carries in the interior of the suction chamber 1 a pair of diametrically opposed vertically extending ribs 6 which are integral with the wall means 2. These ribs 6 serve to guide an apertured receptacle 7 which forms a filter which prevents foreign matter of a size greater than the apertures of the receptacle 7; from reaching the suction opening 5.
  • the filter receptacle 7 has at its top end an outwardly directed flange 7a formed with notches 7b (FIG. 3) which receive the ribs 6 so that the latter serve not only to guide the receptacle 7 but also to prevent turning thereof.
  • the receptacle 7 is provided with a substantially U- shaped bail 7c (FIG. 1), to facilitate introduction and removal of the receptacle 7.
  • the top opening of the suction chamber 1 can be fluid-tightly closed by a removable cover 1a provided with a sealing ring 1b, as illustrated in FIG. 1.
  • the top wall of the housing is formed with suitable openings 20, shown in phantom lines in FIG. 3, for receiving fastener elements such as mounting bolts 22 or the like for mounting the pump on a suitable supporting bracket or the like.
  • the operator can grasp the bail 7c so as to remove the receptacle 7 from the suction chamber 1, and after the receptacle 7 is cleaned it can be returned to the suction chamber 1, after which the cover 1a is replaced.
  • the pressure chamber 4 receives a pair a components 24 and 26 which define a chamber in which the rotary impeller 28 is located, this impeller being driven from a drive shaft 30 which extends through a rear closure wall 32 fastened to the rear end of the housing of the invention in any suitable way and mounted on a suitable support.
  • both the suction chamber 1 and the pressure chamber 4 have openings which are not situated at the sides of the housing and in addition the suction chamber 1 and the pressure chamber 4 are formed without any undercuts.
  • the suction chamber 1 tapers slightly from its top open end inwardly toward the bottom thereof.
  • the pressure chamber 4 is formed at its upper wall with a pressure outlet 16, and the pressure chamber 4 is fully open at the rear of the housing where the pressure chamber opening extends throughout the interior height of the housing. Because the chambers l and 4 are completely free of any undercuts, a simple one-piece manufacture of the housing is possible, for example by injection molding.
  • the pressure wall means 4a which defines the pressure chamber 4 is formed at a lower region with an opening 8 through which the pressure chamber can ,be emptied.
  • the opening 8 is situated at the left end of an elongated emptying passage.10 (FIG. :1) which. is formed in the suction wall means 2.
  • This passage 10 is provided with an outlet 11 formed with inner threads, and it will be noted that the opening 9 is situated at the region of the outlet 11 so as to communicate therewith.
  • This closure means 12 may take the form of a plug which is threaded into the passage 10 at the inner threads formed at the outlet 11 thereof, and the length of the plug 12 is sufficiently great to enable the plug 12 to extend completely across the opening 9, closing the latter with a side surface of the plug 12 while the plug 12 also completely closes the passage 10.
  • the plug 12 closes the opening 9 the suction chamber 1 is maintained sealed from the pressure chamber 4. Such a sealing is required during operation of the pump.
  • the plug 12 is removed for emptying the chambers 1 and 4 through the openings 8 and 9 when the pump is not used, during the winter months, for example. 1
  • the housing of the invention carries at its exterior reinforcing ribs 17 whichserve to strengthen and stiffen the housing.
  • These ribs 17 are integrally formed at their outer ends with an exterior falsehousing wall 18 which serves to further strengthen the pump housing and which in addition enables the pump housing to be provided with an esthetically pleas ing appearance.
  • the wall 18 is a false wall in the sense that the true housing wall is situated at the inner ends of the ribs 17.
  • the pump housing of the invention can be used, for example, both for self-priming and non-self-priming circulating pumps.
  • the pump housing of the invention can be used, for example, both for self-priming and non-self-priming circulating pumps.
  • the above-described pump housing structure of the present invention has the advantage that as a result of the integration of the suction wall means and the separation wall means between the suction chamber and the pressure chamber, where the separation wall means forms a wall of the pressure chamber, an extremely compact construction is provided.
  • a further extremely important advantage of the present invention resides in the fact that the illustrated pump housing, because of its compact construction and because of the configuration of the suction chamber and pressure chamber provided by the invention, enables the pump housing to be manufactured in one piece preferably by extrusion or injection molding, so that on the one hand all problems encountered with the present state of the art in connection with the assembly of housing components are avoided and on the other hand an exceedingly inexpensive housing of exceedingly high quality can be manufactured.
  • the pump housing of the invention can be manufactured in one piece out of a plastic material, for example by injection molding, so that subsequent adhering or welding of components to each other are not required, provides the further extremely great advantage that it is possible to use in the manufacture of the pump housing of the invention plastic materials which are reinforced, particularly by glass fiv bers, achieving in this way important advantages with respect to the accuracy of the structure, the stability thereof, and itslack of sensitivity to temperature fluc- 'tuations.
  • polyamides reinforced with glass fibers have proved to be most suitable as the plastic material for .the housing of theiinvention.
  • suction chamber which is tangentially rendered integral with the separation wall, with this suction chamberbeing cylindrical and'circular in section while tapering so that it becomes of a gradually smaller diameter from the top toward the bottom.
  • the invention is not limited to a cylindrical suction chamber of circular section. It is also possible to use other sectional configurations such as cylindrical chambers which have a polygonal or square cross section, for example.
  • a one-piece plastic housing having suction wall means defining a suction chamber, pressure wall means defining a pressure chamber, and separation wall means integral with said suction wall means and pressure wall means and separating said suction chamber from said pressure chamber, said separation wall means being formed with a suction opening through which said pressure chamber communicates with said suction chamber, said housing having a top and opposed side s, said suction wall means being formed with an opening at said top of said housing and defining a suction chamber which is free of undercuts, and said pressure wall means being formed with an opening situated at a location other than said opposed sides of said housing and also defining a pressure chamber which is free of undercuts, said suction wall means having-an inner surface surrounding a central axis of said suction chamber and providing the latter with a predetermined cross-sectional configuration, and said separation wall means extending tangentially with respect to said suction wall means at a location where said separation wall means is integral with and intersects said suction wall means.
  • suction' wall means defines a suction chamber which tapers inwardly from said opening at said top of said housing.
  • suction wall means carries at least one rib situated in the interior of said suction chamber, and an apertured receptacle situated in said suction chamber for filtering liquid flowing therethrough to said suction opening, said receptacle being formed with a cutout which receives said rib.
  • suction wall means carries at least one vertically extending which said suction chamber and pressure chamber can be emptied.
  • suction wall means is formed with an emptying passage extending from said opening at said lower region of said pressure chamber, said opening at said lower region of said suction chamber communicating with said passage and said passage having an outlet at the exterior of said housing, said opening at said lower region of said suction chamber being situated adjacent said outlet, and closure means carried by said housing at said outlet for closing both said passage and said opening at said lower region of said suction chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US463661A 1973-04-26 1974-04-24 Pump with plastic housing Expired - Lifetime US3920352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732321165 DE2321165C3 (de) 1973-04-26 Pumpengehäuseteil

Publications (1)

Publication Number Publication Date
US3920352A true US3920352A (en) 1975-11-18

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Application Number Title Priority Date Filing Date
US463661A Expired - Lifetime US3920352A (en) 1973-04-26 1974-04-24 Pump with plastic housing

Country Status (5)

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US (1) US3920352A (enExample)
BR (1) BR7403377D0 (enExample)
CH (1) CH603943A5 (enExample)
FR (1) FR2227447B1 (enExample)
IT (1) IT1011277B (enExample)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618425A (en) * 1983-05-04 1986-10-21 Production Techniques Limited Pump for pumping corrosive fluids
US4921601A (en) * 1987-04-17 1990-05-01 Bentley Bryan R Component part of filter casing
US5021151A (en) * 1989-05-12 1991-06-04 Yane Daryl J Plastic impeller pump and filtration unit for semi-conductor etching system
US5226790A (en) * 1990-06-08 1993-07-13 Calpeda Spa Peripheral-longitudinal diffusser for a single-impeller centrifugal pump
DE4221463A1 (de) * 1992-05-22 1993-11-25 Wilo Gmbh Kreiselpumpen mit spiralförmigem Pumpeninnenraum
WO2000068575A3 (en) * 1999-05-12 2001-02-01 H Tech Inc Centrifugal pump
US20050158194A1 (en) * 2004-01-20 2005-07-21 Sloan Joanne B. Molded pump
US20070114168A1 (en) * 2005-11-01 2007-05-24 Fred Hazlehurst Pump
US20090145498A1 (en) * 2005-11-01 2009-06-11 Joel Brent Bowman Strainer Housing Assembly And Stand For Pump
US20120031512A1 (en) * 2010-08-07 2012-02-09 Gernot Hesse Combined pump and filter module
US20120090087A1 (en) * 2010-10-12 2012-04-19 Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co., KG Circulating device for baths
US8297920B2 (en) 2008-11-13 2012-10-30 Hayward Industries, Inc. Booster pump system for pool applications
CN103062120A (zh) * 2013-02-07 2013-04-24 江苏科技大学 弹性体叶轮海水泵
US9079128B2 (en) 2011-12-09 2015-07-14 Hayward Industries, Inc. Strainer basket and related methods of use
CN105090117A (zh) * 2014-05-12 2015-11-25 格兰富控股联合股份公司 泵壳体
US9555352B2 (en) 2010-12-21 2017-01-31 Pentair Water Pool And Spa, Inc. Modular pump and filter system and method
CN107075864A (zh) * 2014-06-23 2017-08-18 Acis(水利咨询工业服务公司) 用于游泳池的过滤泵
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
US11193504B1 (en) 2020-11-24 2021-12-07 Aquastar Pool Products, Inc. Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade
USD946629S1 (en) 2020-11-24 2022-03-22 Aquastar Pool Products, Inc. Centrifugal pump
US20230108937A1 (en) * 2021-10-06 2023-04-06 Luis Eduardo Perez Pool debris collection container
USD986289S1 (en) 2020-11-24 2023-05-16 Aquastar Pool Products, Inc. Centrifugal pump
US12076667B2 (en) 2020-03-11 2024-09-03 Hayward Industries, Inc. Disposable insert for strainer basket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT83805B (pt) * 1985-11-29 1992-09-30 Bombas Electricas Sa Bomba centrifuga para recirculacao de agua
DE20107470U1 (de) * 2001-05-02 2001-08-23 Roos, Franz, 63674 Altenstadt Umwälzpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981025A (en) * 1932-06-17 1934-11-20 Union Steam Pump Company Pump
US2008308A (en) * 1934-10-03 1935-07-16 Duriron Co Centrifugal pump
US2405836A (en) * 1944-03-08 1946-08-13 Bour Harry E La Self-priming pump
US2635549A (en) * 1947-05-29 1953-04-21 Gorman Rupp Co Centrifugal pump with separable impeller casing
US3637331A (en) * 1970-06-01 1972-01-25 Worthington Corp Self-contained pumping unit
US3685919A (en) * 1970-09-11 1972-08-22 Speck Pumpen Circulating pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981025A (en) * 1932-06-17 1934-11-20 Union Steam Pump Company Pump
US2008308A (en) * 1934-10-03 1935-07-16 Duriron Co Centrifugal pump
US2405836A (en) * 1944-03-08 1946-08-13 Bour Harry E La Self-priming pump
US2635549A (en) * 1947-05-29 1953-04-21 Gorman Rupp Co Centrifugal pump with separable impeller casing
US3637331A (en) * 1970-06-01 1972-01-25 Worthington Corp Self-contained pumping unit
US3685919A (en) * 1970-09-11 1972-08-22 Speck Pumpen Circulating pump

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618425A (en) * 1983-05-04 1986-10-21 Production Techniques Limited Pump for pumping corrosive fluids
US4921601A (en) * 1987-04-17 1990-05-01 Bentley Bryan R Component part of filter casing
US5021151A (en) * 1989-05-12 1991-06-04 Yane Daryl J Plastic impeller pump and filtration unit for semi-conductor etching system
US5226790A (en) * 1990-06-08 1993-07-13 Calpeda Spa Peripheral-longitudinal diffusser for a single-impeller centrifugal pump
DE4221463A1 (de) * 1992-05-22 1993-11-25 Wilo Gmbh Kreiselpumpen mit spiralförmigem Pumpeninnenraum
WO2000068575A3 (en) * 1999-05-12 2001-02-01 H Tech Inc Centrifugal pump
EP1557570A3 (en) * 2004-01-20 2010-05-19 Pentair Pool Products, Inc. Molded pump
US20050158194A1 (en) * 2004-01-20 2005-07-21 Sloan Joanne B. Molded pump
US7780406B2 (en) 2004-01-20 2010-08-24 Pentair Water Pool And Spa, Inc. Molded pump
US7531092B2 (en) * 2005-11-01 2009-05-12 Hayward Industries, Inc. Pump
US20090145498A1 (en) * 2005-11-01 2009-06-11 Joel Brent Bowman Strainer Housing Assembly And Stand For Pump
US20070114168A1 (en) * 2005-11-01 2007-05-24 Fred Hazlehurst Pump
US8186517B2 (en) 2005-11-01 2012-05-29 Hayward Industries, Inc. Strainer housing assembly and stand for pump
US8734098B2 (en) 2008-11-13 2014-05-27 Hayward Industries, Inc. Booster pump system for pool applications
US8297920B2 (en) 2008-11-13 2012-10-30 Hayward Industries, Inc. Booster pump system for pool applications
US20120031512A1 (en) * 2010-08-07 2012-02-09 Gernot Hesse Combined pump and filter module
US20120090087A1 (en) * 2010-10-12 2012-04-19 Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co., KG Circulating device for baths
US8944787B2 (en) * 2010-10-12 2015-02-03 Herborner Pumpenfabrik J.H. Hoffman Gmbh & Co. Kg Circulating device for baths
US9555352B2 (en) 2010-12-21 2017-01-31 Pentair Water Pool And Spa, Inc. Modular pump and filter system and method
US9079128B2 (en) 2011-12-09 2015-07-14 Hayward Industries, Inc. Strainer basket and related methods of use
CN103062120A (zh) * 2013-02-07 2013-04-24 江苏科技大学 弹性体叶轮海水泵
CN103062120B (zh) * 2013-02-07 2015-04-29 江苏科技大学 弹性体叶轮海水泵
CN105090117B (zh) * 2014-05-12 2020-03-27 格兰富控股联合股份公司 泵壳体
CN105090117A (zh) * 2014-05-12 2015-11-25 格兰富控股联合股份公司 泵壳体
CN107075864A (zh) * 2014-06-23 2017-08-18 Acis(水利咨询工业服务公司) 用于游泳池的过滤泵
CN107075864B (zh) * 2014-06-23 2019-06-04 Acis(水利咨询工业服务公司) 用于游泳池的过滤泵
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
US12076667B2 (en) 2020-03-11 2024-09-03 Hayward Industries, Inc. Disposable insert for strainer basket
US11193504B1 (en) 2020-11-24 2021-12-07 Aquastar Pool Products, Inc. Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade
US11408441B1 (en) 2020-11-24 2022-08-09 Aquastar Pool Products, Inc. Centrifugal pump
USD971966S1 (en) 2020-11-24 2022-12-06 Aquastar Pool Products, Inc. Centrifugal pump
USD986289S1 (en) 2020-11-24 2023-05-16 Aquastar Pool Products, Inc. Centrifugal pump
US11668329B1 (en) 2020-11-24 2023-06-06 Aquastar Pool Products, Inc. Centrifugal pump
USD946629S1 (en) 2020-11-24 2022-03-22 Aquastar Pool Products, Inc. Centrifugal pump
US20230108937A1 (en) * 2021-10-06 2023-04-06 Luis Eduardo Perez Pool debris collection container

Also Published As

Publication number Publication date
FR2227447B1 (enExample) 1978-01-20
DE2321165A1 (de) 1974-11-07
CH603943A5 (enExample) 1978-08-31
AU6830074A (en) 1975-10-30
FR2227447A1 (enExample) 1974-11-22
BR7403377D0 (pt) 1974-12-03
IT1011277B (it) 1977-01-20
DE2321165B2 (de) 1976-07-15

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