DE29805287U1 - Molding - Google Patents
MoldingInfo
- Publication number
- DE29805287U1 DE29805287U1 DE29805287U DE29805287U DE29805287U1 DE 29805287 U1 DE29805287 U1 DE 29805287U1 DE 29805287 U DE29805287 U DE 29805287U DE 29805287 U DE29805287 U DE 29805287U DE 29805287 U1 DE29805287 U1 DE 29805287U1
- Authority
- DE
- Germany
- Prior art keywords
- molded part
- conductors
- polymeric material
- electrically conductive
- tubular
- 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
Links
- 238000000465 moulding Methods 0.000 title 1
- 239000004020 conductor Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004071 soot Substances 0.000 claims description 4
- 229910001960 metal nitrate Inorganic materials 0.000 claims description 2
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/35—Ohmic-resistance heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/35—Ohmic-resistance heating
- F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
- H05B2214/02—Heaters specially designed for de-icing or protection against icing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Glass Compositions (AREA)
Description
Formteilmolded part
Die Erfindung betrifft ein rohrförmiges Formteil aus polymerem Werkstoff, wobei das Formteil mit Stromanschlußfahnen versehen ist.The invention relates to a tubular molded part made of polymeric material, wherein the molded part is provided with power connection lugs.
In der DE 38 26 646 C2 ist ein gattungsgemäßes Formteil beschrieben, welches aus einer Außenhülle und einem in die Außenhülle einführbaren Einsatz besteht. Die Außenhülle, welche vorzugsweise aus Kunststoff besteht, hat an ihrem vorderen Ende eine Spritzdüse. Der Einsatz, welcher aus einem leitfähigen Kunststoff besteht, beinhaltet einen zur Spritzdüse führenden Wasserkanal und Stromanschlußfahnen.DE 38 26 646 C2 describes a generic molded part which consists of an outer shell and an insert which can be inserted into the outer shell. The outer shell, which is preferably made of plastic, has a spray nozzle at its front end. The insert, which is made of a conductive plastic, contains a water channel leading to the spray nozzle and power connection lugs.
Bei Stromzufuhr über die Stromanschlußfahnen soll sich dieser Einsatz und damit der zur Spritzdüse führende Wasserkanal erwärmen. Dadurch soll bei Temperaturen von unterhalb 00C ein Einfrieren des durch die Scheibenwaschanlagendüse auf die Windschutzscheibe aufgebrachten Wassers verhindert werden. Nachteilig bei den beschriebenen Ausführungsformen ist jedoch, daß sich die Erwärmung dieses Einsatzes nur auf den Bereich, der unmittelbar an die Anschlußfahnen angrenzt, beschränkt. Eine durchgehende Erwärmung des kompletten Einsatzes bis zur Ausströmöffnung ist nicht gegeben.When power is supplied via the power connection lugs, this insert and thus the water channel leading to the spray nozzle should heat up. This should prevent the water applied to the windshield by the windshield washer nozzle from freezing at temperatures below 0 0 C. However, the disadvantage of the described embodiments is that the heating of this insert is limited to the area immediately adjacent to the connection lugs. Continuous heating of the entire insert up to the outlet opening is not possible.
In der DE 39 00 821 C1 ist eine fluidführende Schlauchleitung für ein Kraftfahrzeug, die im Wege der Koextrusion aus mehreren Kunststoffschichten aus thermoplastischen Kunststoffen aufgebaut ist, beschrieben. Diese besteht aus einer inneren fluidführenden Schicht, einer äußeren Mechanikschicht und einer zwischen der fluidführenden und der Mechanikschicht angeordneten Heizschicht. Die Heizschicht besteht aus einem thermoplastischen Kunststoff, der durch einen leitenden Füller ausreichend leitfähig eingestellt ist und zwei eingebettete metallische Leiter für die Zuführung von elektrischer Energie aufweist. Diese Leiter sind in einem längslaufenden Abstandsspalt der Heizschicht eingebettet.DE 39 00 821 C1 describes a fluid-carrying hose line for a motor vehicle, which is constructed by coextrusion from several plastic layers made of thermoplastics. This consists of an inner fluid-carrying layer, an outer mechanical layer and a heating layer arranged between the fluid-carrying and mechanical layers. The heating layer consists of a thermoplastic material that is made sufficiently conductive by a conductive filler and has two embedded metal conductors for the supply of electrical energy. These conductors are embedded in a longitudinal spacing gap in the heating layer.
-2--2-
-2--2-
Vorteilhaft wird hier gesehen, daß die fluidführende Schlauchleitung mit dem so beschriebenem Aufbau im Bedarfsfall beheizt werden kann, um zu verhindern, daß das Fluid gefriert. It is seen as an advantage here that the fluid-carrying hose line with the structure described can be heated if necessary in order to prevent the fluid from freezing.
Mit dieser mehrschichtigen Schlauchleitung wird jedoch ein sehr kosten- und materialintensiver Weg vorgeschlagen, bei dem ein vernünftiges Preis-Leistungs-Verhältnis in Frage gestellt ist. Des weiteren ist die Lösung für den Anwender mit einem höheren Montageaufwand verbunden, da hier die Herstellung der elektrischen Verbindung zwischen dem eingebetteten metallischen Leiter und dem Stromsystem des Fahrzeuges sehr aufwendig ist.However, this multi-layer hose line is a very cost- and material-intensive approach, which calls into question a reasonable price-performance ratio. Furthermore, the solution involves more assembly work for the user, as establishing the electrical connection between the embedded metal conductor and the vehicle's power system is very complex.
Aufgabe der Erfindung ist es, eine zuverlässig arbeitende und kostengünstige Rohrleitung herzustellen, die über nahezu ihre gesamte Länge bei Temperaturen unterhalb von 0°C ein Einfrieren und Zusetzen des medienführenden Querschnittes durch das Medium selbst oder ggf. vorhandener Restfeuchte verhindert.The object of the invention is to produce a reliable and cost-effective pipeline that prevents freezing and clogging of the media-carrying cross-section by the medium itself or any residual moisture present over almost its entire length at temperatures below 0°C.
Diese Aufgabe wird gelöst mit dem rohrförmigen Formteil aus polymerem Werkstoff gemäß Patentanspruch 1.This object is achieved with the tubular molded part made of polymer material according to patent claim 1.
Erfindungsgemäß wird dazu vorgeschlagen, daß an wenigstens zwei voneinander beabstandeten axialen Leitern, Ringleitern oder spiraligen Leitern unterschiedlicher Polarität wenigstens eine Stromanschlußfahne angebracht ist, und daß die Leiter vollflächig oder teilweise in den Querschnitt der Formteilwandung eingelassen sind. Der polymere Werkstoff ist durch Ruß-, Kohlefaser-, Metall- und/oder Silbernitrateinlagerungen elektrisch leitfähig eingestellt. In bevorzugten Ausführungen sind für die Einstellung der Leitfähigkeit wenigstens 10 % Ruß- und/oder wenigstens 6 % Metallfaser- und/oder wenigstens 10 % Kohlefasereinlagerungen notwendig. Um eine Erwärmung des Lumens zu bewirken, ist einer der beiden Leiter mit dem Pluspol und der andere Leiter mit dem Minuspol verbunden. Dadurch entsteht in dem elektrisch leitfähig eingestellten polymeren Werkstoff ein Stromfluß, welcher zu der beabsichtigten Erwärmung führt.According to the invention, it is proposed that at least one current connection lug is attached to at least two spaced-apart axial conductors, ring conductors or spiral conductors of different polarity, and that the conductors are fully or partially embedded in the cross-section of the molded part wall. The polymer material is made electrically conductive by means of soot, carbon fiber, metal and/or silver nitrate deposits. In preferred embodiments, at least 10% soot and/or at least 6% metal fiber and/or at least 10% carbon fiber deposits are necessary to adjust the conductivity. In order to heat the lumen, one of the two conductors is connected to the positive pole and the other conductor to the negative pole. This creates a current flow in the electrically conductive polymer material, which leads to the intended heating.
-3--3-
-3--3-
In einer weiteren bevorzugten Ausführungsform der Erfindung sind in der Regel zwei diametral gegenüberliegend angeordnete axial verlaufende Leiter vollflächig oder teilweise in den Querschnitt der Formteilwandung eingelassen.In a further preferred embodiment of the invention, two diametrically opposite axially extending conductors are generally fully or partially embedded in the cross section of the molded part wall.
Bei spiralig über das Formteil verlaufenden Leitern genügen hierfür zwei der Länge des Formteils angepaßte Leiterstreifen. Bei der Verwendung von Ringleitern sind partielle Erwärmungen bestimmter Formteilbereiche möglich.For conductors running spirally over the molded part, two conductor strips adapted to the length of the molded part are sufficient. When using ring conductors, partial heating of certain molded part areas is possible.
1. Axiale Leiter1. Axial conductors
Maße:Dimensions:
Außendurchmesser: 19 mm Länge: 155 mmOuter diameter: 19 mm Length: 155 mm
Innendurchmesser: 15 mmInner diameter: 15 mm
Material:Material:
Polymerer Werkstoff mit wenigstens 10 % Ruß-und/oder wenigstens 6 % Metallfaser- und/oder wenigstens 10 % Kohlefasereinlagerungen.Polymeric material with at least 10% carbon black and/or at least 6% metal fiber and/or at least 10% carbon fiber inclusions.
Leistungsaufnahme: ca. 20 Watt.Power consumption: approx. 20 watts.
2. Ringleiter2. Ring conductor
Maße:Dimensions:
Außendurchmesser: 19 mm Länge: 155 mmOuter diameter: 19 mm Length: 155 mm
Innendurchmesser: 15 mmInner diameter: 15 mm
Material:Material:
Polymerer Werkstoff mit wenigstens 10 % Rußeinlagerungen, und/oder der in Ausführungsbeispiel 1 genannten Materialien.Polymeric material with at least 10% soot deposits, and/or the materials mentioned in Example 1.
Leistungsaufnahme: 0,5 WattPower consumption: 0.5 watts
-4--4-
-4--4-
Im folgenden wird die Erfindung anhand der Zeichnungen erläutert.
Es zeigt:In the following, the invention is explained with reference to the drawings.
It shows:
Figur 1: eine Schnittansicht des erfindungsgemäßen rohrförmigen Formteiles mit zweiFigure 1: a sectional view of the tubular molded part according to the invention with two
axialen Leitern;axial conductors;
Figur 2: eine Ansicht mit drei Ringleitern;Figure 2: a view with three ring conductors;
Figur 3: eine Ansicht mit zwei spiraligen Leitern.Figure 3: a view with two spiral conductors.
In Figur 1 ist das erfindungsgemäße rohrförmige Formteil aus polymerem Werkstoff (1) in Schnittansicht dargestellt. In die Wandung des rohrförmigen Formteiles (1) sind zwei axiale Leiter (4, 41) vollflächig eingelassen und die Stromanschlußfahnen (2, 21) ragen aus der Wandung heraus.Figure 1 shows the tubular molded part made of polymer material (1) according to the invention in a sectional view. Two axial conductors (4, 41) are fully embedded in the wall of the tubular molded part (1) and the current connection lugs (2, 21) protrude from the wall.
In Figur 2 sind drei Ringleiter (42, 43, 44) dargestellt, die teilweise in den Querschnitt der Formteilwandung des Formteiles (11) eingelassen sind, und die an einem freien Ende in die Stromanschlußfahnen (22, 23, 24) auslaufen.Figure 2 shows three ring conductors (42, 43, 44) which are partially embedded in the cross-section of the molded part wall of the molded part (11) and which run out at a free end into the current connection lugs (22, 23, 24).
In Figur 3 ist ein rohrförmiges Formteil (12) dargestellt, wobei beginnend an den Stromanschlußfahnen (25, 26) zwei spiralige Leiter (45, 46) erkennbar sind, die teilweise in den Querschnitt der Formteilwandung des Formteiles (12) eingelassen sind.Figure 3 shows a tubular molded part (12), wherein two spiral conductors (45, 46) can be seen starting at the current connection lugs (25, 26), which are partially embedded in the cross-section of the molded part wall of the molded part (12).
In den Figuren 2 und 3 ist der Stromfluß durch Pfeile schematisch gekennzeichnet.In Figures 2 and 3 the current flow is schematically indicated by arrows.
- Schutzansprüche -- Protection claims -
Claims (2)
dr.schi-zkmiRehau, 02.03.1998
dr.schi-zkmi
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29805287U DE29805287U1 (en) | 1998-03-24 | 1998-03-24 | Molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29805287U DE29805287U1 (en) | 1998-03-24 | 1998-03-24 | Molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29805287U1 true DE29805287U1 (en) | 1998-05-20 |
Family
ID=8054657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29805287U Expired - Lifetime DE29805287U1 (en) | 1998-03-24 | 1998-03-24 | Molding |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29805287U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013223910A1 (en) * | 2013-11-22 | 2015-05-28 | Contitech Ag | Flexible, multi-layer, heatable hose |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH323096A (en) | 1956-09-25 | 1957-07-15 | Schweiz Sprengstoff Ag Cheddit | Pipeline made of electrically insulating material |
| FR2165269A5 (en) | 1971-12-23 | 1973-08-03 | Rhone Poulenc Sa | Flexible plastic tube - includes electrical heating wires embedded in its wall |
| DE8513541U1 (en) | 1985-05-08 | 1985-07-11 | Huber, Roland, 4300 Essen | Heating device for the diesel fuel filter of a diesel engine, in particular the diesel engine of a motor vehicle |
| DE3900821C1 (en) | 1989-01-13 | 1990-04-19 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | Fluid-carrying hose line for a motor vehicle |
| DE9116824U1 (en) | 1991-06-08 | 1994-02-03 | Vdo Adolf Schindling Ag, 60487 Frankfurt | Supply line for the transport of cleaning fluid |
| DE4234460A1 (en) | 1992-10-13 | 1994-04-14 | Hella Kg Hueck & Co | Unit for controlling volume of fresh gas in IC engine - has throttle organ fixed to shaft and fitted in throttle opening with shaft located by roller bearings in bearing bores of housing |
| DE4413578A1 (en) | 1994-04-19 | 1995-10-26 | Vdo Schindling | Feed pipe for supply of liq. to windscreen washer of motor vehicle |
| DE4436971A1 (en) | 1994-10-15 | 1996-04-18 | Pahl Gummi Asbest | Hose with an electrically conductive inner layer |
-
1998
- 1998-03-24 DE DE29805287U patent/DE29805287U1/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH323096A (en) | 1956-09-25 | 1957-07-15 | Schweiz Sprengstoff Ag Cheddit | Pipeline made of electrically insulating material |
| FR2165269A5 (en) | 1971-12-23 | 1973-08-03 | Rhone Poulenc Sa | Flexible plastic tube - includes electrical heating wires embedded in its wall |
| DE8513541U1 (en) | 1985-05-08 | 1985-07-11 | Huber, Roland, 4300 Essen | Heating device for the diesel fuel filter of a diesel engine, in particular the diesel engine of a motor vehicle |
| DE3900821C1 (en) | 1989-01-13 | 1990-04-19 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | Fluid-carrying hose line for a motor vehicle |
| DE9116824U1 (en) | 1991-06-08 | 1994-02-03 | Vdo Adolf Schindling Ag, 60487 Frankfurt | Supply line for the transport of cleaning fluid |
| DE4234460A1 (en) | 1992-10-13 | 1994-04-14 | Hella Kg Hueck & Co | Unit for controlling volume of fresh gas in IC engine - has throttle organ fixed to shaft and fitted in throttle opening with shaft located by roller bearings in bearing bores of housing |
| DE4413578A1 (en) | 1994-04-19 | 1995-10-26 | Vdo Schindling | Feed pipe for supply of liq. to windscreen washer of motor vehicle |
| DE4436971A1 (en) | 1994-10-15 | 1996-04-18 | Pahl Gummi Asbest | Hose with an electrically conductive inner layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013223910A1 (en) * | 2013-11-22 | 2015-05-28 | Contitech Ag | Flexible, multi-layer, heatable hose |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19980702 |
|
| R163 | Identified publications notified |
Effective date: 19990920 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20010703 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20040423 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20060413 |
|
| R071 | Expiry of right |