GB2126655A - Rotary positive-displacement pumps - Google Patents
Rotary positive-displacement pumps Download PDFInfo
- Publication number
- GB2126655A GB2126655A GB08225564A GB8225564A GB2126655A GB 2126655 A GB2126655 A GB 2126655A GB 08225564 A GB08225564 A GB 08225564A GB 8225564 A GB8225564 A GB 8225564A GB 2126655 A GB2126655 A GB 2126655A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impeller
- elastomeric material
- drive sleeve
- hub element
- flexible
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 6
- 239000013536 elastomeric material Substances 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 15
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000000806 elastomer Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 10
- 229920002397 thermoplastic olefin Polymers 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 2
- 206010037660 Pyrexia Diseases 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 18
- 235000013361 beverage Nutrition 0.000 abstract description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229920006285 olefinic elastomer Polymers 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 9
- 235000013305 food Nutrition 0.000 description 7
- 238000005266 casting Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14819—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being completely encapsulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/087—Propellers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A rotor, or "impeller", for a pump of the flexible-vane type has an outer element 5 made of an extruded or injection moulded flexible and resilient thermoplastic material that is resistant to relatively high temperatures eg. 150 DEG C. The said material may be an olefinic elastomer; and a removable sleeve 4 may be made of stainless steel or an epoxide resin. Alternative modes of sleeving the impeller are described with reference to Figures 5 and 6 and Figures 7 and 8 (not shown). The working fluid of the pump may be one comprised in the manufacture of a beverage, a connectible substance eg. jam, or a pharmaceutical material. <IMAGE>
Description
SPECIFICATION
Pump impellers
This invention relates to impellers for flexible impeller pumps.
A flexible impeller pump has an impeller, generally of neoprene or a similar elastic material, with a number of radial vanes whose tips bear against the periphery of the pumping chamber. A cam located between inlet and outlet ports in an otherwise cylindrical bore comprising the pumping chamber causes the vanes to flex during rotation of the impeller in the bore, by means of a drive shaft keyed into the impeller, to pump fluid from the inlet on one side of the cam to the outlet on the other side of the cam.
Whereas we have been manufacturing pumps with such flexible impellers (JABSCO pumps) for some forty years, and they have been successfully employed during that time, they have not been wholly suitable for certain applications.
Specifically they have not been suitable for continuous hot transfer of certain products such as involved in the food, drink or pharmaceutical industries, for example continuous hot transfer of cooked foods such as jam which occurs at temperatures approaching boiling point, due to the transfer temperatures being incompatible with the materials hitherto employed for the impeller, generally neoprene which is limited to maximum temperatures around 650C to 700C. In addition for such pumping applications it is necessary, from the hygiene point of view, for the impeller to be of a crevice-free design, whilst being easily removable from the drive shaft, in order to facilitate cleaning of the impeller.
According to one aspect of the present invention there is provided an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and formed of an elastomeric material, and a drive sleeve associated with the hub element for torque transmission purposes, and wherein the elastomeric material is a high-temperatureresistant injection mouldable or extrudable, flexible thermoplastic material.
According to another aspect of the present invention there is provided a method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub element for torque transmission purposes, including the steps of treating the drive sleeve with a first elastomeric material which is bondable thereto and moulding the hub element from a second elastomeric material, bondable to the first elastomeric material, around the drive sleeve whereby the hub element is bonded to the drive sleeve via the first elastomeric material.
According to a further aspect of the present invention there is provided a method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub for torque transmission purposes, including the steps of at least partially encapsulating the drive sleeve in a layer of an elastomeric material and moulding the hub element from the same elastomeric material around the at least partially encapsulated drive sleeve, whereby the drive sleeve is totally encapsulated in the elastomeric material of the impeller whilst being adapted to be driven by a drive shaft.
According to yet another aspect of the present invention there is provided a method of securing a flexible impeller of elastomeric material to an internal drive sleeve for torque transmission, wherein the sleeve is totally encapsulated in the elastomer of the impeller and is adapted to be driven by a drive shaft.
According to a still further aspect of the present invention there is provided a method of making a flexible impeller of elastomeric material, wherein a drive sleeve is treated with an elastomeric material which is bondable to the elastomer of the impeller.
According to yet a further aspect of the present invention there is provided a method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub for torque transmission purposes, including the steps of extruding the hub element from an elastomeric material, the hub element having an axial cavity provided with internal splines, and axially sliding a drive sleeve having external splines co-operable with said internal splines into said cavity.
Embodiments of the present invention will now be described with reference to the accompanying drawings, in which: Figure 1 shows a longitudinal section through a conventional impeller design;
Figure 2 shows a central transverse section through the impeller of Figure 1;
Figure 3 shows a longitudinal section through one embodiment of pump impeller according to the present invention;
Figure 4 shows a central transverse section through the embodiment shown in Figure 3;
Figure 5 shows a longitudinal section through a second embodiment of pump impeller according to the present invention;
Figure 6 shows a central transverse section through the embodiment shown in Figure 5;;
Figure 7 shows a longitudinal section through a third embodiment of pump impeller according to the present invention, and
Figure 8 shows a transverse section through the embodiment shown in Figure 7.
A conventional neoprene flexible impeller 1
(Fig. 1) is manufactured by casting neoprene 2 around a hollow cylindrical metal drive insert or sleeve 3, which may be internally grooved, as shown, for co-operation with an external key on a drive shaft (not shown). Other methods of
securing the sleeve to the drive shaft may alternatively be employed. The drive insert 3 is required in view of the flexible nature of the neoprene in order to strengthen the hub portion of the impeller sufficiently for driving purposes (torque transmission).The insert 3 becomes bonded to the neoprene at the interface therebetween during the casting operation, thus providing an impeller structure which is crevicefree at the interface and therefore a cleanable hygienic construction suitable for use in the food, beverage and pharmaceutical industries, for example, except for continuous use at high temperatures. Since neoprene must be cast to the required shape and casting is an expensive process it would be advantageous if other flexible materials could be employed which could be shaped by a cheaper process, for example, injection moulding or extrusion. In the case of food, beverage or pharmaceutical use, for example, those other flexible materials should preferably also be more high-temperature resistant than the conventional neoprene.
We have found that olefinic thermoplastic elastomers, for example ethylene/propylene thermoplastic elastomers, are suitable for use as flexible pump impellers since they can be injection moulded or extruded and have the required flexing properties over a temperature range extending up to 1 500.
It has, however, been found that these olefinic thermoplastic elastomers will not bond directly to a metal insert (drive sleeve) to be used for impeller hub strengthening for torque transmission purposes as is the case with neoprene, with the result that impellers made with these elastomers to the sections shown in
Figures 1 and 2 cannot be employed for food, beverage or pharmaceutical use, since there are crevices between the insert 3 and the hub in which pumped product may lodge and from which it cannot be removed.
In order that these elastomers may be used for the impeller material for food, beverage or pharmaceutical applications in particular, therefore, the impeller design with regard to the torque transmitting metal insert or sleeve for the
hub must be modified.
Two basic approaches are employed for the
impellers shown in Figures 3 to 8. The connection between the drive insert and the impeller hub
must be made crevice-free or the drive insert must be removable for cleaning purposes.
The embodiment shown in Figures 3 and 4 is such that the drive insert is removable for cleaning. In this embodiment a drive insert 4, typically of metal and generally of stainless steel, although it may alternatively be comprised by a substantially rigid plastics material with appropriate temperature resistant properties for example, hygienic Epoxy Resin, is externally
grooved and provided with an internal section suitable for keying to a drive shaft (not shown).
The impeller hub element 5 having integral flexible vanes 6 is moulded or extruded from an olefinic thermoplastic elastomer such that it has an internal axial cavity which is provided with projecting keys for co-operation with the external grooves of the drive insert 4 inserted in the axial cavity for impeller driving purposes, whilst enabling the drive insert to be removed axially from the impeller for cleaning purposes. Other keying structures may alternatively be used.
Depending on the material employed for the drive insert, both it and the flexible impeller hub with vanes element may be extruded, thus facilitating manufacturing costs reduction.
The embodiment shown in Figures 5 and 6 employs a substantially conventional metal drive insert 7 with a key way 8 for engaging a drive shaft (not shown). In the embodiment the flexible impeller hub and vanes element 9 is preferably injection moulded from an olefinic thermoplastic elastomer. Since the drive insert 8 cannot be bonded directly to the elastomer the external surface of the drive insert which is to be adjacent the flexible impeller material is first provided with a coagulating or layer 10 of a material which will bond to both the metal and the elastomer. In the embodiment illustrated the coating 10 extends over the entire outer cylindrical surface of the metal insert and over the radially-outmost part of the ends of the metal insert.Impeller material is then moulded to the desired configuration about the coated drive shaft, during which moulding process the coating becomes bonded to the impeller material. Since there are no crevices formed between the insert and the flexible impeller material by virtue of both being bonded to the intermediate material 10, this is an hygienic construction which can be employed in the food, drink or pharmaceutical industries, for example.
In the embodiment illustrated in Figures 7 and 8, a metal insert 11 is first at least partially encapsulated with elastomer 12. Since the elastomer does not bond to the metal, bores 1 3 in the metal insert are provided in order to help hold the innermost 1 5 and outermost 1 7 elastomer
layers in position on the metal insert 11. The innermost layer 1 5 is moulded to a suitable key way cross-section 14 for engagement with a drive shaft (not shown).Whilst the hub and vanes
element 16 of the impeller may be moulded directly about such an encapsulated metal insert
11, the outer layer 1 7 of encapsulation material fusing with the hub material during moulding, the encapsulated insert is preferably centered in the impeller cavity by means of premoulded insert support rings 18, formed of the elastomer,
arranged at the ends of the encapsulated insert before moulding of the hub and vanes element 1 6. Since the support rings are moulded from the
same material, the elastomer which is thermoplastic, the rings 1 8 fuse with the material
employed for the hub and vanes of the impeller
during moulding thereof around the encapsulated
insert.
Whilst the invention has been specifically
described with respect to the use of olefinic
thermoplastic elastomers, other high temperature-resistant, injection mouldable or extrudable, flexible, thermoplastic material may alternatively be employed, particularly but not exclusively those which are not bondable directly to the drive insert or sleeve of the impeller.
Claims (21)
1. An impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and formed of an elastomeric material, and a drive sleeve associated with the hub element for torque transmission purposes, and wherein the elastomeric material is a high-temperatureresistant injection mouldable or extrudable, flexible thermoplastic material.
2. An impeller as claimed in claim 1, wherein the drive sleeve is removable from the hub element for cleaning purposes.
3. An impeller as claimed in claim 2, wherein the hub element includes an axial cavity provided with internal projecting keys co-operable with external grooves provided on the drive sleeve arranged in the cavity.
4. An impeller as claimed in claim 3, wherein the hub element is formed by extrusion of the elastomeric material.
5. An impeller as claimed in any one of the preceding claims, wherein the drive sleeve is formed of metal.
6. An impeller as claimed in claim 1 , wherein the drive sleeve is bonded to the hub element.
7. An impeller as claimed in claim 6, wherein the drive sleeve is bonded to the hub element via an intermediate layer which is bonded to both the drive sleeve and the hub element.
8. An impeller as claimed in claim 6, wherein the drive sleeve is encapsulated in the elastomeric material of the hub element.
9. An impeller as claimed in any one of the preceding claims, wherein the elastomeric material is an olefinic thermoplastic elastomer.
10. A method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub element for torque transmission purposes, including the steps of treating the drive sleeve with a first elastomeric material which is bondable thereto and moulding the hub element from a second elastomeric material, bondable to the first elastomeric material, around the drive sleeve whereby the hub element is bonded to the drive sleeve via the first elastomeric material.
1 A method as claimed in claim 10, wherein the drive sleeve is of metal and the second elastomeric material is a high-temperatureresistant, injection mouldable, flexible thermoplastic material.
12. A method as claimed in claim 1 wherein the second elastomeric material is an olefinic thermoplastic elastomer.
13. A method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub for torque transmission purposes, including the steps of at least partially encapsulating the drive sleeve in a layer of an elastomeric material and moulding the hub element from the same elastomeric material around the at least partially encapsulated drive sleeve, whereby the drive sleeve is totally encapsulated in the elastomeric material of the impeller whilst being adapted to be driven by a drive shaft.
14. A method as claimed in claim 13, wherein a respective sleeve support ring premoulded from the elastomeric material is arranged at each end of the drive sleeve prior to moulding of the hub element therearound, during which moulding step the rings become bonded to the hub element and the elastomeric material layer at least partially encapsulating the drive sleeve.
1 5. A method as claimed in claim 1 3 or claim 14, wherein the elastomeric material is a hightemperature-resistant, injection mouldable, flexible thermoplastic material.
1 6. A method as claimed in claim 15, wherein the elastomeric material is an olefinic thermoplastic elastomer.
17. A method of securing a flexible impeller of elastomeric material to an internal drive sleeve for torque transmission, wherein the sleeve is totally encapsulated in the elastomer of the impeller and is adapted to be driven by a drive shaft.
18. A method of making a flexible impeller of elastomeric material, wherein a drive sleeve is treated with an elastomeric material which is bondable to the elastomer of the impeller.
1 9. A method of manufacturing an impeller, for a flexible impeller pump, comprising a hub element having integral flexible vanes projecting therefrom and a drive sleeve associated with the hub for torque transmission purposes, including the steps of extruding the hub element from an elastomeric material, the hub element having an axial cavity provided with internal projecting keys, and axially sliding a drive sleeve having external grooves co-operable with said internal keys into said cavity.
20. A method of manufacturing an impeller, for a flexible impeller pump, substantially as herein described with reference to and as illustrated in
Figures 3 and 4, or Figures 5 and 6, or Figures 7 and 8, of the accompanying drawings.
21. An impeller for a flexible impeller pump manufactured by a method according to any one of claims 10 to 20.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08225564A GB2126655B (en) | 1982-09-08 | 1982-09-08 | Rotary positive-displacement pumps |
| SE8304741A SE8304741L (en) | 1982-09-08 | 1983-09-02 | IMPELLER |
| IT8322809A IT8322809A0 (en) | 1982-09-08 | 1983-09-08 | ITSELF. FLEXIBLE IMPELLER PUMP IMPELLER AND METHOD OF MANUFACTURE AND FIXING OF THE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08225564A GB2126655B (en) | 1982-09-08 | 1982-09-08 | Rotary positive-displacement pumps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2126655A true GB2126655A (en) | 1984-03-28 |
| GB2126655B GB2126655B (en) | 1986-01-15 |
Family
ID=10532758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08225564A Expired GB2126655B (en) | 1982-09-08 | 1982-09-08 | Rotary positive-displacement pumps |
Country Status (3)
| Country | Link |
|---|---|
| GB (1) | GB2126655B (en) |
| IT (1) | IT8322809A0 (en) |
| SE (1) | SE8304741L (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137922A (en) * | 1983-04-12 | 1984-10-17 | Wright Barry Corp | Pump impellers and manufacture thereof by co-injection moulding |
| GB2151196A (en) * | 1983-12-12 | 1985-07-17 | Outboard Marine Corp | Water pump for marine propulsion devices |
| GB2157768A (en) * | 1984-04-16 | 1985-10-30 | Gilardini Spa | A supercharger for heat engines of vehicles |
| WO1988001350A1 (en) * | 1986-08-18 | 1988-02-25 | Brunswick Corporation | Marine drive water pump impeller |
| DE4234746A1 (en) * | 1992-10-15 | 1994-04-21 | Braun Ag | Pump for household appliances |
| GB2352017A (en) * | 1999-07-14 | 2001-01-17 | Mannesmann Sachs Ag | Coupling assembly |
| US6364781B2 (en) | 1998-02-09 | 2002-04-02 | Mannesmann Sachs Ag | Installation apparatus for a coupling device having a holder, which is provided on a flywheel mass, for a driver |
| EP2067617A1 (en) * | 2007-12-04 | 2009-06-10 | N.C.A. Technologies | Method for overmoulding ceramic and composite element obtained by this method |
| WO2011022837A1 (en) * | 2009-08-28 | 2011-03-03 | Benn Bruce I | Wind hydro-generator |
| US8100676B2 (en) | 2005-05-06 | 2012-01-24 | Inter-Ice Pump Aps | Rotor, a method for producing such rotor and a pump comprising such rotor |
| ITBO20130502A1 (en) * | 2013-09-17 | 2015-03-18 | Roberto Manzini | VOLUMETRIC PUMP |
| EP3885579A1 (en) * | 2014-06-20 | 2021-09-29 | Marine Flow Limited | Flexible impeller pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB969030A (en) * | 1961-05-30 | 1964-09-09 | Lobster Bridlington Ltd | Improvements in and relating to the storage of shellfish |
| GB1004007A (en) * | 1962-11-08 | 1965-09-08 | Ferry Diamond Engineering Comp | Improvements in and relating to rotary pumps |
| GB1048828A (en) * | 1963-08-01 | 1966-11-23 | Folkes Belting Company Ltd | Fans |
| GB1415446A (en) * | 1973-07-19 | 1975-11-26 | Walker Mfg Co Gmbh | Self-adjusting fan for internal combustion engines |
| GB1477124A (en) * | 1975-02-03 | 1977-06-22 | Rovac Corp | Compressor-expander having a dual rotor assembly in a heat pump system |
-
1982
- 1982-09-08 GB GB08225564A patent/GB2126655B/en not_active Expired
-
1983
- 1983-09-02 SE SE8304741A patent/SE8304741L/en not_active Application Discontinuation
- 1983-09-08 IT IT8322809A patent/IT8322809A0/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB969030A (en) * | 1961-05-30 | 1964-09-09 | Lobster Bridlington Ltd | Improvements in and relating to the storage of shellfish |
| GB1004007A (en) * | 1962-11-08 | 1965-09-08 | Ferry Diamond Engineering Comp | Improvements in and relating to rotary pumps |
| GB1048828A (en) * | 1963-08-01 | 1966-11-23 | Folkes Belting Company Ltd | Fans |
| GB1415446A (en) * | 1973-07-19 | 1975-11-26 | Walker Mfg Co Gmbh | Self-adjusting fan for internal combustion engines |
| GB1477124A (en) * | 1975-02-03 | 1977-06-22 | Rovac Corp | Compressor-expander having a dual rotor assembly in a heat pump system |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137922A (en) * | 1983-04-12 | 1984-10-17 | Wright Barry Corp | Pump impellers and manufacture thereof by co-injection moulding |
| GB2151196A (en) * | 1983-12-12 | 1985-07-17 | Outboard Marine Corp | Water pump for marine propulsion devices |
| GB2190057A (en) * | 1983-12-12 | 1987-11-11 | Outboard Marine Corp | Water pump for marine propulsion devices |
| GB2157768A (en) * | 1984-04-16 | 1985-10-30 | Gilardini Spa | A supercharger for heat engines of vehicles |
| WO1988001350A1 (en) * | 1986-08-18 | 1988-02-25 | Brunswick Corporation | Marine drive water pump impeller |
| AU593133B2 (en) * | 1986-08-18 | 1990-02-01 | Brunswick Corporation | Marine drive water pump impeller |
| DE4234746A1 (en) * | 1992-10-15 | 1994-04-21 | Braun Ag | Pump for household appliances |
| US5392694A (en) * | 1992-10-15 | 1995-02-28 | Braun Aktiengesellschaft | Coffee maker |
| US6364781B2 (en) | 1998-02-09 | 2002-04-02 | Mannesmann Sachs Ag | Installation apparatus for a coupling device having a holder, which is provided on a flywheel mass, for a driver |
| GB2352017A (en) * | 1999-07-14 | 2001-01-17 | Mannesmann Sachs Ag | Coupling assembly |
| GB2352017B (en) * | 1999-07-14 | 2004-02-04 | Mannesmann Sachs Ag | Clutch assembly |
| US8100676B2 (en) | 2005-05-06 | 2012-01-24 | Inter-Ice Pump Aps | Rotor, a method for producing such rotor and a pump comprising such rotor |
| EP2067617A1 (en) * | 2007-12-04 | 2009-06-10 | N.C.A. Technologies | Method for overmoulding ceramic and composite element obtained by this method |
| WO2009071623A1 (en) * | 2007-12-04 | 2009-06-11 | N.C.A. Technologies | Ceramic-overmoulding method and composite element obtained by this method |
| CN101883678A (en) * | 2007-12-04 | 2010-11-10 | N.C.A.技术公司 | Method for overmoulding ceramic and composite element obtained by this method |
| WO2011022837A1 (en) * | 2009-08-28 | 2011-03-03 | Benn Bruce I | Wind hydro-generator |
| ITBO20130502A1 (en) * | 2013-09-17 | 2015-03-18 | Roberto Manzini | VOLUMETRIC PUMP |
| EP2886796A1 (en) * | 2013-09-17 | 2015-06-24 | Roberto Manzini | Volumetric pump |
| EP3885579A1 (en) * | 2014-06-20 | 2021-09-29 | Marine Flow Limited | Flexible impeller pump |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2126655B (en) | 1986-01-15 |
| IT8322809A0 (en) | 1983-09-08 |
| SE8304741L (en) | 1984-03-09 |
| SE8304741D0 (en) | 1983-09-02 |
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| Date | Code | Title | Description |
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| PCNP | Patent ceased through non-payment of renewal fee |