DE102004064184B4 - Filter assembly and a method for its production - Google Patents
Filter assembly and a method for its production Download PDFInfo
- Publication number
- DE102004064184B4 DE102004064184B4 DE102004064184.6A DE102004064184A DE102004064184B4 DE 102004064184 B4 DE102004064184 B4 DE 102004064184B4 DE 102004064184 A DE102004064184 A DE 102004064184A DE 102004064184 B4 DE102004064184 B4 DE 102004064184B4
- Authority
- DE
- Germany
- Prior art keywords
- base plate
- filter element
- filter
- folds
- grooves
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/04—Permanent measures for connecting different parts of the filter, e.g. welding, glueing or moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/027—Radial sealings
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1412—Infrared [IR] radiation
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
- B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Filteranordnung, umfassend- ein hohlzylindrisches, zickzackförmig gefaltetes Filterelement (3) und- eine scheibenförmige Grundplatte (4), die mit dem Filterelement (3) verbunden ist,wobei das Filterelement (3) mittels einer schmelzenden Haftverbindung auf der Grundplatte (4) gehalten ist, wobei durch die schmelzende Haftverbindung ein Stofffluss (12) des Materials der Grundplatte (4) in die Falten des Filterelements (3) erreicht ist, derart, dass das Material des Filterelements (3) in das Material der Grundplatte (4) eingedrungen ist und die Schmelze zwischen den Falten hochgestiegen ist, dadurch gekennzeichnet, dass- auf der dem Filterelement (3) zugewandten Seite der Grundplatte (4) Rillen (10) angeordnet sind, die quer zu den Falten des Filterelements (3) verlaufen und die Oberfläche der Grundplatte (4) vergrößern, und- wobei das Filterelement (3) aus Filterpapier und die Grundplatte (4) aus Kunststoff ist, wobei das Filterelement (3) vor dem Herstellen der schmelzenden Haftverbindung auf den Rillen der Grundplatte (4) angeordnet ist und wobei die schmelzende Haftverbindung zwischen dem Material der Grundplatte (4) und den auf den Rillen der Grundplatte (4) angeordneten Falten des Filterelements (3) durch ein Verschmelzen oder Verschweißen der Grundplatte (4) mit dem Filterelement (3) mittels Infrarotstrahler hergestellt ist.A filter assembly comprising a hollow cylindrical zigzag folded filter element (3) and a disk shaped base plate (4) connected to the filter element (3), the filter element (3) being held on the base plate (4) by a fusing adhesive bond , wherein by the melting adhesive bond a flow of material (12) of the material of the base plate (4) in the folds of the filter element (3) is reached, such that the material of the filter element (3) has penetrated into the material of the base plate (4) and the melt has risen between the folds, characterized in that on the filter element (3) facing side of the base plate (4) grooves (10) are arranged, which extend transversely to the folds of the filter element (3) and the surface of the base plate (4) enlarge, and - wherein the filter element (3) made of filter paper and the base plate (4) made of plastic, wherein the filter element (3) before the production of the melting Haftver Binding on the grooves of the base plate (4) is arranged and wherein the melting adhesive bond between the material of the base plate (4) and on the grooves of the base plate (4) arranged folds of the filter element (3) by a fusion or welding of the base plate (4 ) is made with the filter element (3) by means of infrared radiator.
Description
Die Erfindung betrifft eine Filteranordnung und ein Verfahren zu deren Herstellung.The invention relates to a filter assembly and a method for its production.
Stand der TechnikState of the art
Bei einem aus der
Weiterhin ist bereits eine solche Filteranordnung aus der
Gattungsgemäße Filteranordnungen mit gefalteten Filterelementen sind auch aus der
Aus der
Diese plattenförmigen Dichtungen der bekannten Filteranordnungen sollten immer eine möglichst stoffschlüssige Verbindung zwischen dem Filterelement und der Grundplatte herstellen, da diese Dichtungen Strömungssystemen, beispielsweise für Motoröl oder Diesel- bzw. Ottokraftstoff, und hohen Reißspannungen ausgesetzt sind, so dass immer die Gefahr besteht, dass das Filterelement reißt und damit nicht nur das Dichtmaterial beschädigt, sondern die Filterwirkung ganz außer Kraft gesetzt wird. Weiterhin sind diese Dichtungen auch während des Betriebs durch relativ hohe Temperaturen des zu filternden Mediums, insbesondere bei Motoröl, hohen Beanspruchungen ausgesetzt, die zu einer Minderung der Funktionstüchtigkeit der gesamten Filteranordnung führen kann.These plate-shaped seals of the known filter assemblies should always produce a material bond as possible between the filter element and the base plate, since these seals are exposed flow systems, for example, engine oil or diesel or petrol, and high tensile stresses, so that there is always the danger that the Filter element breaks and thus not only damaged the sealing material, but the filter effect is completely disabled. Furthermore, these seals are also exposed during operation by relatively high temperatures of the medium to be filtered, especially in engine oil, high stresses that can lead to a reduction in the functioning of the entire filter assembly.
Aufgabenstellungtask
Der Erfindung liegt somit die Aufgabe zugrunde, eine Filteranordnung der eingangs genannten Art so fortzubilden, dass bei einfacher Herstellung eine dauerhafte Funktionstüchtigkeit gewährleistet ist.The invention is therefore the object of a filter assembly of the type mentioned so educate that a simple operation a permanent functioning is guaranteed.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Filteranordnung ist in vorteilhafter Weise geeignet, ausgehend von der gattungsgemäßen Art, die gestellte Aufgabe mit den Merkmalen des Hauptanspruchs dadurch zu lösen, dass eine schmelzende Haftverbindung zwischen einem Filterelement, beispielsweise ein zickzackförmig gefaltetes Filterelement, und einer Grundplatte so ausgeführt ist, dass auf der Grundplatte Rillen angeordnet sind, die quer zu den Falten des Filterelements verlaufen, das Filterelement auf den Rillen der Grundplatte angeordnet ist und dass durch die schmelzende Haftverbindung ein Stofffluss des Materials der Grundplatte in die Falten des Filterelements erreichbar ist. Das Filterelement besteht erfindungsgemäß aus Filterpapier und die Grundplatte aus Kunststoff, wobei das Filterelement hohlzylindrisch auf einer scheibenförmigen Grundplatte gehalten sein kann. Die schmelzende Haftverbindung zwischen dem Material der Grundplatte (
In vorteilhafter Weise kann mit einem Verfahren zur Herstellung der schmelzenden Haftverbindung das gefaltete Filterelement in einem ersten Schritt auf die mit Rillen versehene Grundplatte gelegt werden und mittels einer auf die Grundplatte einwirkenden Wärmequelle ein partielles Verschmelzen oder Verschweißen der Grundplatte mit dem Filterelement bewirkt werden. Das Verschmelzen oder Verschweißen wird erfindungsgemäß mit einem Infrarotstrahler als Wärmequelle durchgeführt.Advantageously, with a method for producing the melting adhesive bond, the folded filter element can be placed in a first step on the grooved base plate and a partial fusion or welding of the base plate to the filter element can be effected by means of a heat source acting on the base plate. The fusion or welding is carried out according to the invention with an infrared radiator as a heat source.
Vorteilhaft ist dies Verfahren insbesondere deswegen, da durch die Rillen bzw. Riffelung eine größere Oberfläche auf der Grundplatte geschaffen wird, durch die das Material des Filterelements, z.B. Papier oder Glasfaser, ca. 0,2 mm tiefer in das Material der Grundplatte eindringen kann, als bei den herkömmlichen Verbindungen. Die Schmelze steigt hierbei zwischen den Falten des Filterelements relativ hoch, wodurch der gesamte Schweißvorgang sicherer wird.This method is advantageous, in particular, because the grooves provide a larger surface area on the base plate, through which the material of the filter element, e.g. Paper or glass fiber, about 0.2 mm deeper penetrate into the material of the base plate, as in the conventional compounds. The melt increases in this case between the folds of the filter element relatively high, making the entire welding process safer.
Figurenlistelist of figures
Ein Ausführungsbeispiel der erfindungsgemäßen Filteranordnung wird anhand der Zeichnung erläutert. Es zeigen:
-
1 eine Darstellung einer Filteranordnung nach dem Stand der Technik mit einem teilweise sichtbaren Filterelement und Grundplatten an beiden Stirnseiten, -
2 eine Draufsicht auf eine erfindungsgemäße Grundplatte mit kreisförmigen Rillen, -
3 einen Schnitt durch eine erfindungsgemäße heftende Schmelzverbindung zwischen Filterelement und Grundplatte nach2 , -
4 einen Schnitt durch eine Grundplatte mit einer Dreiecksdichtung, -
5 einen Schnitt durch eine Variante einer Grundplatte und -
6 einen Schnitt durch eine weitere Variante einer Grundplatte mit Dichtungslippe.
-
1 a representation of a filter assembly according to the prior art with a partially visible filter element and base plates on both end faces, -
2 a plan view of a base plate according to the invention with circular grooves, -
3 a section through an inventive adhesive melting connection between the filter element and the base plate after2 . -
4 a section through a base plate with a triangular seal, -
5 a section through a variant of a base plate and -
6 a section through another variant of a base plate with sealing lip.
Beschreibung des AusführunqsbeispielsDescription of the Ausführunqsbeispiels
In
Solche Filteranordnungen können beispielsweise zur Filterung von Motoröl, Kraftstoff oder von Luft beim Betrieb eines Kraftfahrzeugs mit einem Verbrennungsmotor herangezogen werden. Die jeweiligen Anlagen, in denen die Filteranordnung eingesetzt wird, sind hier, um die Darstellung übersichtlich zu lassen, nicht dargestellt. In der Regel erfolgt die Zufuhr des zu filternden Mediums von außen an die Flächen des zickzackförmigen Filterelements
In
Aus
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10313533.2 | 2003-03-26 | ||
| DE10313533 | 2003-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102004064184B4 true DE102004064184B4 (en) | 2018-12-06 |
Family
ID=33103127
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102004064184.6A Expired - Lifetime DE102004064184B4 (en) | 2003-03-26 | 2004-03-26 | Filter assembly and a method for its production |
| DE200410015398 Ceased DE102004015398A1 (en) | 2003-03-26 | 2004-03-26 | Hot-melt bond between pleated filter component and base plate, relies upon grooved base plate, from which material flows into folds during bonding |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200410015398 Ceased DE102004015398A1 (en) | 2003-03-26 | 2004-03-26 | Hot-melt bond between pleated filter component and base plate, relies upon grooved base plate, from which material flows into folds during bonding |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE102004064184B4 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1700684B1 (en) * | 2005-03-11 | 2012-06-20 | MANN+HUMMEL GmbH | Process for producing a tight connection between a multilayer plastic material and a filter medium |
| DE102005024237A1 (en) * | 2005-05-25 | 2006-11-30 | Siemens Ag | Flange of thermoplastic material, for bonding to fuel filter element, has irregular surface structure on bonding side to increase surface area to absorb heat energy for welding through UV and IR radiation |
| FR2954712B1 (en) | 2009-12-30 | 2014-03-14 | Filtrauto | FILTERING ELEMENT WITH SEALING LIP FOR A LIQUID FILTER |
| DE102019129692A1 (en) * | 2019-11-04 | 2021-05-06 | Elsässer Filtertechnik GmbH | Air filter with integrated sealing lip |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1020602B (en) | 1953-12-18 | 1957-12-12 | Fram Corp | Method for gluing a sealing disc to the front end of a folded, ring-shaped filter element |
| US3457339A (en) * | 1965-12-08 | 1969-07-22 | Pall Corp | Process for making end capped filter elements |
| US3457399A (en) | 1966-02-25 | 1969-07-22 | Gen Electric | Luminaire |
| FR2255933A1 (en) | 1973-12-27 | 1975-07-25 | Sofep | Disposable monobloc air filter assembly for automobiles - in which the lid and filter element with baseplate are single rigid unit formed by fusion welding |
| DE2429474A1 (en) | 1974-04-24 | 1975-11-06 | C F E A Compagnie Francaise D | FILTER CARTRIDGE AND METHOD OF MANUFACTURING IT |
| DE8133548U1 (en) | 1981-11-17 | 1983-03-10 | Sartorius GmbH, 3400 Göttingen | FILTER ELEMENT FOR FILTRATING FLUIDS |
| US4536291A (en) | 1983-05-25 | 1985-08-20 | Sartorius Gmbh | Tubular filter element with mated end caps |
| DE4206519A1 (en) | 1992-03-02 | 1993-09-09 | Knecht Filterwerke Gmbh | Ring filter |
| DE4441608A1 (en) | 1994-11-23 | 1996-06-05 | Mann & Hummel Filter | Filter arrangement |
| DE19521898A1 (en) | 1995-06-16 | 1996-12-19 | Mann & Hummel Filter | Filter cartridge |
-
2004
- 2004-03-26 DE DE102004064184.6A patent/DE102004064184B4/en not_active Expired - Lifetime
- 2004-03-26 DE DE200410015398 patent/DE102004015398A1/en not_active Ceased
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1020602B (en) | 1953-12-18 | 1957-12-12 | Fram Corp | Method for gluing a sealing disc to the front end of a folded, ring-shaped filter element |
| US3457339A (en) * | 1965-12-08 | 1969-07-22 | Pall Corp | Process for making end capped filter elements |
| US3457399A (en) | 1966-02-25 | 1969-07-22 | Gen Electric | Luminaire |
| FR2255933A1 (en) | 1973-12-27 | 1975-07-25 | Sofep | Disposable monobloc air filter assembly for automobiles - in which the lid and filter element with baseplate are single rigid unit formed by fusion welding |
| DE2429474A1 (en) | 1974-04-24 | 1975-11-06 | C F E A Compagnie Francaise D | FILTER CARTRIDGE AND METHOD OF MANUFACTURING IT |
| DE8133548U1 (en) | 1981-11-17 | 1983-03-10 | Sartorius GmbH, 3400 Göttingen | FILTER ELEMENT FOR FILTRATING FLUIDS |
| US4536291A (en) | 1983-05-25 | 1985-08-20 | Sartorius Gmbh | Tubular filter element with mated end caps |
| DE4206519A1 (en) | 1992-03-02 | 1993-09-09 | Knecht Filterwerke Gmbh | Ring filter |
| DE4441608A1 (en) | 1994-11-23 | 1996-06-05 | Mann & Hummel Filter | Filter arrangement |
| DE19521898A1 (en) | 1995-06-16 | 1996-12-19 | Mann & Hummel Filter | Filter cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004015398A1 (en) | 2004-11-04 |
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