• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention proposes a heating element 30 incorporating an electric heating circuit, for a wiper blade of a motor vehicle, comprising at least one resistive heating element (36) which is connected to terminals (40) of power supply. electric heating element, characterized in that at least one heating resistive element is a PTC resistive element (36) produced by means of a resistive ink with positive temperature coefficient.
    公开号:FR3049153A1
    申请号:FR1652400
    申请日:2016-03-21
    公开日:2017-09-22
    发明作者:Gerald Caillot；Jean-Michel Jarasson；Vincent Izabel；Clementine Derrepas
    申请人:Valeo Systemes dEssuyage SAS；
    IPC主号:
    专利说明:

    "Electric heating circuit and heating element for windscreen wiper blade, method for producing a heating element, and windscreen wiper blade"
    TECHNICAL FIELD OF THE INVENTION The invention relates to an electric heating circuit for a wiper blade of a vehicle. The invention also relates to an electric heating element comprising an electric heating circuit, a wiper blade comprising a heating element, and a method of manufacturing an electric heating element.
    BACKGROUND ART OF THE INVENTION
    In a known manner, it is possible to heat a wiper blade of a motor vehicle, in particular to defrost it in winter or to use the heat produced by the heating means to also defrost the outer surface of the window glass, of which the windscreen wiper must ensure cleaning.
    When the windscreen wiper blade has internal windshield washer fluid distribution channels, heating the wiper blade may further heat the windshield washer fluid prior to spraying or projecting the outer surface of the window, which also facilitates defrosting operations of the window and may possibly prevent the use of a squeegee for manual use.
    In known manner, a wiper blade of the "flat blade" type comprises a longitudinal orientation body which carries a wiper blade, generally made of natural or synthetic rubber, which is intended to rub against the outer surface the window to be wiped, for example a vehicle windshield, to evacuate water by bringing this water out of the driver's field of vision.
    Such a type of wiper blade also has at least one longitudinal vertebra which gives the wiper blade bending so as to promote the application of the wiper blade on the outer surface of the window.
    The wiper blade is carried by a wiper arm or drive arm which is reciprocated by an electric drive motor.
    The connection means of the wiper blade to the drive arm may comprise a connector which is secured to the longitudinal body, and an adapter which is mounted articulated on the longitudinal body and which is fixed to a free end of the arm.
    In known manner, the heating means use an electric heating circuit which comprises at least one electrical heating resistor which, when supplied with electric current, produces heat which is dissipated in its environment.
    For example, it has already been proposed to equip the bending vertebra of a wiper blade with heating means in the form of an attached film which is bonded to at least one of the two opposing flat faces. of the vertebra, and which has a heating circuit.
    The electric heating circuit is for example a loop of an electrical conductor of electricity whose ends are connected to power supply terminals.
    In the case of a so-called high-end vehicle, the piloting and protection of the heating function of a windscreen wiper blade is generally done directly by means of the electronics and the electrical circuit of the vehicle.
    The heating control function in this case requires integration in the general definition of the electrical architecture of the vehicle and it generates a certain cost.
    In the case of a medium or low range vehicle, the manufacturer may not wish to modify the vehicle architecture and he then asks for a possibility of integrating the steering and protection function directly into the broom. heated wipers.
    It is also possible to equip an existing vehicle with a wiper blade heating function, whereas the vehicle has been designed and marketed without such a function and therefore does not include any means of controlling the wiper function. heater.
    Thus, the other functions of the vehicle are not affected in degraded mode of the function, for example in the case of supply of incorrect information by an outdoor temperature sensor or the speed of movement of the vehicle, or in case of failure of such a sensor.
    In known manner, the heating function is triggered in general for an outside temperature of less than 5 ° C, to ensure global deicing of the windscreen wiper blade, whether it is the defrosting of the distribution channels, the connection means of the broom windscreen wiper arm or wiper blade in contact with the outer surface of the window.
    In a degraded mode, for example in the event of a failure of an outdoor temperature sensor or vehicle speed that would provide information that the vehicle is moving while the vehicle is stationary at a standstill, the risk is permanent heating of the wiper blade beyond a temperature of 5 ° C, for example in summer with ambient temperatures above 30 ° C.
    In such a situation, it can lead to the formation of a hot spot, a short circuit, a physical degradation of the wiper blade, or even in the worst case to a fire departure. The invention aims to provide a simple, effective and economical solution to such problems inherent to the designs according to the state of the art, without having to resort to dedicated means to provide thermal protection of the wiper blade .
    BRIEF SUMMARY OF THE INVENTION The invention proposes an electric heating circuit for a wiper blade of a vehicle, in particular an automobile, comprising at least one heating resistive element which is connected to power supply terminals of the vehicle. element, characterized in that at least one resistive heating element is a resistive element PTC produced by means of a resistive ink with a positive temperature coefficient. The acronym CTP stands for Positive Temperature Coefficient to designate an intrinsic characteristic of the selected material which is here an so-called CTP ink with a positive temperature coefficient. In English PTC for "Positive Temperature Coefficient".
    Thus, a resistive heating element CTP has an electrical resistance which increases with increasing temperature.
    Such a resistive heating element PTC is distinguished from other heating elements whose electrical resistance is substantially constant, a resistive heating element PTC having the ability to control the temperature itself by regulating its heating power via its electrical resistance in response to temperature. At low temperature, its resistance is lower and its heating power is thus greater by allowing a rapid increase in temperature. As the temperature increases, the resistance of the resistive heating element CTP increases, thereby resulting in a reduction of its heating power.
    For a short period of time and for some temperatures, the heating power of the resistive heating element CTP may decrease to a point where it simply compensates for the energy loss of the system, maintaining a constant.
    Thus, without using specific control means - such as an electronic circuit with pulse width modulation (or "PWM" circuit), the integration of an electric heating circuit according to the invention into one of the components of the Wiper blade ensures self-regulation of the heating function and safety in particular to prevent degradation of the wiper blade.
    The design according to the invention, using PTC resistive heating elements made by depositing a CTP ink, is advantageous because of its compactness, ease of integration and ease of use.
    According to other characteristics of the electric heating circuit: - it comprises several PTC resistive heating elements which are connected to the same power supply terminals; it comprises several PTC resistive heating elements which are connected in parallel to the same power supply terminals; it comprises two electrical conductors connecting each resistive heating element CTP to the power supply terminals; each electrical connecting conductor is made by means of an electrically conductive ink; each electrical connection conductor is an electrically conductive ink strip; the two bands of electrically conductive ink are parallel; and each resistive heating element is a positive temperature coefficient resistive ink pad which is arranged transversely astride the two strips of electrically conductive ink; the heating circuit comprises: a portion comprising a plurality of resistive heating elements CTP forming a first heating and regulating resistor; and another portion forming a second heating resistor connected in series with the first resistor. The invention also proposes a heating element for a wiper blade of a vehicle, in particular an automobile, characterized in that it comprises a support and at least one electric heating circuit according to the invention which is carried by the support.
    According to other characteristics of the heating element: the support is a vertebra, stiffening and / or bending, a wiper blade, and at least one of the two opposite faces of the vertebra carries, directly or indirectly, at least one resistive heating element CTP; the vertebra bears, directly or indirectly, at least one resistive heating element PTC on each of its two opposite faces; the heating element comprises an electrically insulating layer interposed between the support and each resistive heating element CTP; the support is a wiping blade of a wiper intended to rub against a window to be wiped; the support is a deflector of a wiper intended to improve the aerodynamic performance of the windscreen wiper; the support is a flexible substrate, so as to produce the heating element in the form of a heating film; the support is made of an electrically conductive material or a non-electrically conductive material; The invention also proposes a wiper blade for a motor vehicle, characterized in that it comprises at least one heating element according to the invention.
    According to another characteristic of the wiper blade, it comprises means for connecting or adapting to a drive arm of the wiper blade, it is connecting means comprising means for electrical connection to said terminals power supply.
    Finally, the invention proposes a method of manufacturing an electric heating element for a vehicle wiper blade, in particular an automobile, this element comprising: at least one electric heating circuit comprising at least one resistive heating element CTP positive temperature coefficient which is connected to the power supply terminals of the element; and a support for this resistive heating element CTP, characterized in that it comprises at least one step a) consisting in producing each resistive heating element CTP by depositing on the support a resistive ink with a positive temperature coefficient.
    According to other characteristics of the process: step a) is preceded by a step b) of deposition of an electrically insulating layer on the support; the method of producing an electric heating element which comprises two electrical conductors for connecting each resistive heating element CTP to the power supply terminals, is characterized in that step a) is preceded by a step c) of producing each electrical conductor by depositing on the support of an electrically conductive ink; said step a) or c) of deposition of an ink is performed by screen printing; the support is made of an electrically conductive material or a non-electrically conductive material; - The method comprises a step d) of covering at least a portion of the electric heating circuit of at least one electrically insulating protective layer.
    BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will emerge during the reading of the detailed description which follows, given in a non-limiting manner and for the understanding of which reference will be made to the appended drawings in which: Figure 1 is an exploded perspective view of a wiper blade of a motor vehicle; - Figure 2 is a schematic top view illustrating an embodiment of a heating element according to the invention produced here in the form of a heating film adapted to equip a face of a bending vertebra of the wiper blade -glace of Figure 1; - Figure 3 is a sectional view through a longitudinal and vertical plane along the line 3-3 of a section of the heating element of Figure 2.
    DETAILED DESCRIPTION OF THE FIGURES
    In the remainder of the description, elements having identical structure or similar functions will be designated by the same references.
    In the remainder of the description, the longitudinal, vertical and transverse orientations indicated by the "L, V, T" trihedron of the figures will be adopted in a nonlimiting manner. We also define a horizontal plane that extends longitudinally and transversely. The orientation or longitudinal direction corresponds to the main axis of the wiper blade.
    There is shown in Figure 1 a wiper blade 10, for example for wiping the outer surface of a windshield of a motor vehicle.
    There is also shown partially a drive arm 12 of the wiper blade 10 which is itself intended to be driven by an electric motor (not shown) for the wiper blade to follow an alternating angular movement. back and forth to evacuate water, and possibly other undesirable elements present on the outer surface of the windshield.
    The wiper blade 10 comprises a longitudinal body 14, a wiper blade 16 and at least one vertebra 18 whose function is to give the wiper blade 16 bending so as to promote the application of the wiper blade. wiper blade on the outer surface of the windshield according to the geometric conformation in three dimensions in the space of this outer surface.
    The longitudinal body 14 of the wiper blade 10 here comprises an upper deflector 20 which is intended to improve the operation of the wiper blade, the deflector 20 having the function of improving the plating of the wiper blade. 16 on the outer surface of the windshield and thus improve the aerodynamic performance of the entire windshield wiper system.
    The windscreen wiper blade 10 also has hooks or staples 22 for hooking the wiper blade 16 and the vertebra 18 on the longitudinal body 14, the staples 22 being here located at each of the two opposite longitudinal ends. longitudinal body 14.
    The longitudinal body 14 of the wiper blade 10 is here made in two independent parts which are arranged relative to each other substantially end-to-end and which are connected to one another by a intermediate connector 24.
    To assemble the wiper blade 10 on the wiper arm 12, the wiper 10 comprises an adapter 26 which is mounted on the intermediate connector 24 and which allows an articulation of the wiper blade 10 relative to the arm 12. The articulation of the wiper blade 10 with respect to the wiper arm 12 is an articulation in a pivotal movement about a pivot axis A of transverse orientation orthogonal to the wiper arm. longitudinal axis of the wiper blade 10.
    Indeed, the wiper blade 10 must have at least one degree of freedom in rotation or pivoting relative to the wiper arm 12, and more precisely with respect to a terminal or distal piece 28 fitted to the end free drive arm 12, to allow the wiper blade 10 to follow the curvature in the space of the outer surface of the windshield.
    According to the invention, the wiper blade 10 is equipped with a heating element, or heating element, which essentially consists of a support and components providing a heating electrical resistance function which are carried by the support, the heating element being integrated with the wiper blade 10 and, in the design illustrated in the figures, intended to equip a face of a vertebra 18, and for example the upper face 19.
    As can be seen in particular in FIG. 2, the heating element 30 according to the invention is here in the form of a heating film intended to be attached to a face 19 of the bending vertebra 18.
    The heating film 30 comprises a lower substrate 32 made of an electrically non-conductive material which is here of generally rectangular shape, the dimensions, length and width of which are such that they allow the adaptation and assembly of the heating film 30 on the bending vertebra 18 of determined dimensions.
    The substrate 32 is thus for example a sheet of flexible plastic or synthetic material whose constitution will be specified later.
    The substrate 32 may comprise, on its underside intended to cooperate with an element of the wiper blade (for example with the upper face 19 of the vertebra 18), an adhesive coating so as to allow the fixing of the heating film 30 by bonding this adhesive coating, for example on the vertebra 18.
    The substrate 32 has a free upper surface 34 on which is formed an electric heating circuit according to the teachings of the invention which, in this embodiment, is composed solely of resistive heating elements CTP.
    Each resistive heating element CTP is here a block 36 of ink with a positive temperature coefficient.
    Each CTP block 36 is of rectangular contour and the pavers 36 are eighteen aligned longitudinally and juxtaposed in a similar manner, with the exception of the central or middle portion of the length of the heating element 30 which is here a zone devoid of resistive heating elements CTP. Thus, in the example illustrated in FIG. 2, the electric heating circuit comprises two groups each comprising nine heating resistive elements 36.
    The number of heating resistive elements can of course vary, in particular as a function of the length of the wiper blade and therefore for example the length of the vertebra, and be distributed regularly or not along this length.
    To ensure the electrical connection of each CTP block 36 to a source of electrical energy, the heating element 30 comprises, by way of example, two parallel electrical conductors 38 each in the form of a longitudinal strip which extends substantially over the entire length of the heating element 30. As an example embodiment, each electrically conductive strip 38 is formed by depositing on the upper face 34 of the substrate 32 a conductive ink, for example a dye-based ink. money (Ag).
    In the central part of the heating element 30, that is to say in the zone which does not include PTC heating resistive elements, each electrically conductive strip 38 has a transversely widened central portion 40 which constitutes a electrical connection terminal of the corresponding band 38.
    The central zone in which the connection terminals 40 are located may for example correspond to the longitudinal position of the wiper blade connector 24 on the bending vertebra 18.
    Indeed, in known manner, the connector 26 may comprise electrical connection means (not shown) which are intended to come into contact with the electrical connection terminals 40 of the heating element 30 fitted to the bending vertebra 38.
    Furthermore, the electrical connection or connection between the electrical connection terminals 40 and a source of electrical power supply (not shown) of the vehicle is then ensured, in known manner, for example through the adapter 26 and then the control arm. wiper 30.
    All heating resistive elements or blocks 36 are connected to the same power supply terminals 40, here in a parallel connection. For this purpose, each heating resistive element 36 is arranged to extend transversely astride each of the electrically conductive strips 38.
    Each conductive strip 38 thus constitutes an "electrical connection bar" also called "busbar".
    The realization of a portion of conductive ink conductive electricity conductive strips 38, and CTP based resistive heating elements 36, based on a CTP ink is for example performed by screen printing deposition.
    This method of producing by deposition of successive layers of ink is carried out for example by proceeding first to a deposition step of the electrically conductive strips 38, then proceeding to a deposition step of the resistive heating elements CTP. 36. As a variant not shown, it is also possible to first proceed by depositing the resistive heating elements CTP 36, then to the realization by depositing ink strips electrically conductive 38. At the Figure 2 shows schematically, on a large scale and without respecting the relative dimensions of the various components, a section of the heating element.
    The lower substrate 32 is for example made of polyethylene (PET).
    After depositing the electrically conductive strips 38 and the CTP resistive heating elements 36, this assembly can be covered successively with a protective layer 41, then with a layer 42 of laminated adhesive, and finally, again for for example, an "upper" substrate 44 of similar design to that of the lower substrate 32. By way of example, the resistive heating elements CTP 36 may be made by screen printing of a positive temperature coefficient ink as marketed by the company "Henkel" (registered trademark) under the reference LOCTITE ECI 8000 (registered trademark), or by the company "Du Pont" (registered trademark) under the reference "7292".
    The principle of thermal self-regulation, or principle of protection against the effects of accidental overheating, is based on the principle of Ohm's law that U = R * I, and P = I * U = R * I2, where U is the power supply voltage, I is the current intensity and R is the resistance value, where P is the power supplied.
    The PTC type heating element 30 may be considered a "smart" heating element, its initial resistance RO being expressed in Ohm / area unit (area).
    Depending on the application and the overall heating effect desired, the effective electrical resistance W of a heating element 30 can be obtained by determining a number of heating resistive elements 36 and arranging them in a predetermined pattern. electrical connection (s).
    If N is the number of CTP elements 36, the total heating power is a function of N * U2 / R0 and it can easily be adapted by selecting any parameter such as the applied voltage, the total number of CTP blocks 36 in parallel, as well as their initial resistance (s) R0.
    According to an alternative embodiment not shown, the heating element can be made "directly" on the bending vertebra 18, which then constitutes, in the sense of the invention, the support of the electric heating circuit. For this purpose, the upper face 19 then plays the role of the upper face 34 of the substrate 32.
    If the bending vertebra 18 is made of metal so as to advantageously benefit from a significant thermal radiator effect, then it is necessary - in particular prior to the deposition of a conductive ink of electricity to produce the electrically conductive strips. 38 - coating the upper face 19 with a non-conductive layer of electricity.
    Of course, if the bending vertebra 18 is itself made of a non-electrically conductive material, then it may not be necessary to provide for the deposition of a layer of non-electrically conductive material between the face upper 19 and electrically conductive strips 38.
    The aforementioned techniques of deposition by successive layers of inks, for example by screen printing, can of course be used in the case where the vertebra 18 itself constitutes the support within the meaning of the invention. As a variant not shown, the support may consist of a surface portion of the wiper blade 16 or the aerodynamic deflector 20.
    Similarly, when the heating element is embodied as a self-heating film which can be attached to a wiper blade element or component, the heating element can then be bonded to a portion of the wiper blade. surface of the wiper blade 16 or on a surface portion of the aerodynamic deflector 20.
    A heating circuit according to the invention is not necessarily entirely constituted by heating resistive elements of the CTP type.
    Indeed, the electric heating circuit may comprise a first portion, or first section, comprising a plurality of resistive heating elements CTP 36 as explained above - which then form a first heating resistor and regulation value R1 - and include a second portion, or second section, which is for example a "conventional" heating electrical resistance which is connected in series with the first portion and whose value is R2.
    The total heating power is then equal to U2 / (R1 + R2). Thus, beyond a predetermined temperature threshold, the resistance R1 of the first portion of the electric heating circuit will increase rapidly and therefore the power, and therefore the heating will decrease or stabilize.
    This variant also allows self-regulation of the heating element around a defined threshold value.
    权利要求:
    Claims (22)
    [1" id="c-fr-0001]
    A heating electric circuit for a windscreen wiper blade (10) of a vehicle, in particular an automobile, comprising at least one heating resistive element (36) which is connected to power supply terminals (40) element, characterized in that at least one heating resistive element is a PTC resistive element (36) produced by means of a resistive ink with a positive temperature coefficient.
    [2" id="c-fr-0002]
    2. Heating electric circuit according to claim 1, characterized in that it comprises a plurality of PTC resistive heating elements (36) which are connected to the same terminals (40) of power supply.
    [3" id="c-fr-0003]
    3. Heating electric circuit according to claim 2, characterized in that it comprises a plurality of PTC resistive heating elements (36) which are connected in parallel to the same terminals (40) of power supply.
    [4" id="c-fr-0004]
    4. Heating electric circuit according to any one of claims 2 or 3, characterized in that it comprises two electrical conductors (38) connecting each resistive heating element PTC (36) to the power supply terminals.
    [5" id="c-fr-0005]
    5. Heating electric circuit according to claim 4, characterized in that each electrical connection conductor (38) is made by means of an electrically conductive ink.
    [6" id="c-fr-0006]
    6. Heating electric circuit according to claim 5, characterized in that: - each electrical connection conductor (38) is an electrically conductive ink strip; the two strips (38) of electrically conductive ink are parallel; and each PTC resistive heating element (36) is a positive temperature coefficient resistive ink pad which is arranged transversely astride the two strips (38) of electrically conductive ink.
    [7" id="c-fr-0007]
    7. Heating electric circuit according to any one of the preceding claims, characterized in that it comprises: a portion comprising a plurality of resistive elements CTP heating (36) forming a first resistor (R1) for heating and regulation; and another portion forming a second heating resistor (R2), connected in series with the first resistor.
    [8" id="c-fr-0008]
    Heating element (30) for a wiper blade of a vehicle, in particular an automobile, characterized in that it comprises a support and at least one electric heating circuit according to any one of Claims 1 to 7. which is carried by the support.
    [9" id="c-fr-0009]
    9. Heating element according to claim 8, characterized in that the support is a vertebra (18), stiffening or bending, a wiper blade, and in that at least one (19) of two opposite faces of the vertebra (18) carries, directly or indirectly, at least one resistive heating element CTP (36).
    [10" id="c-fr-0010]
    10. Heating element according to claim 8, characterized in that the vertebra (18) carries, directly or indirectly, at least one resistive heating element CTP (36) on each of its two opposite faces.
    [11" id="c-fr-0011]
    11. Electric heating element according to the claim, characterized in that it comprises an electrically insulating layer interposed between the support and each resistive heating element CTP (36).
    [12" id="c-fr-0012]
    12. Heating element according to claim 8, characterized in that the support is a wiper blade (16) of a windscreen wiper intended to rub against a window to be wiped.
    [13" id="c-fr-0013]
    13. Heating element according to claim 8, characterized in that the support is a deflector (14) of a wiper designed to improve the aerodynamic performance of the windscreen wiper.
    [14" id="c-fr-0014]
    14. heating element (30) according to claim 8, characterized in that the support is a flexible substrate (32), so as to achieve the heating element in the form of a heating film.
    [15" id="c-fr-0015]
    15. Wiper blade (10) for a vehicle, in particular an automobile, characterized in that it comprises at least one heating element (30) according to any one of claims 8 to 14.
    [16" id="c-fr-0016]
    16. Wiper blade according to claim 15, characterized in that it comprises means for connecting or adapting to a drive arm of the wiper blade, these connection means comprising means for electrical connection to said power supply terminals (40).
    [17" id="c-fr-0017]
    17. A method of manufacturing an electric heating element (30) for a wiper blade (10) of a vehicle, in particular an automobile, this element comprising: - at least one electric heating circuit comprising at least one heating resistive element CTP (36) having a positive temperature coefficient which is connected to terminals (40) for powering the element; and a support for this resistive heating element CTP (36), characterized in that it comprises at least one step a) consisting in producing each resistive heating element CTP (36) by depositing on the support a coefficient resistive ink positive temperature.
    [18" id="c-fr-0018]
    18. The method of claim 17, characterized in that step a) is preceded by a step b) depositing an electrically insulating layer on the support.
    [19" id="c-fr-0019]
    19. A method according to one of claims 17 or 18 for producing an electric heating element (30) which comprises two electrical conductors (38) connecting each resistive heating element PTC (36) to the terminals (40) of power characterized in that step a) is preceded by a step c) of producing each electrical conductor (38) by depositing on the carrier an electrically conductive ink.
    [20" id="c-fr-0020]
    20. Method according to any one of claims 17 to 19, characterized in that said step a) or c) of depositing an ink is performed by screen printing.
    [21" id="c-fr-0021]
    21. Method according to any one of claims 17 to 20, characterized in that the support is made of an electrically conductive material or a non-electrically conductive material.
    [22" id="c-fr-0022]
    22. A method according to any one of claims 17 to 20, characterized in that it comprises a step d) of covering at least a portion of the electric heating circuit of at least one electrically insulating protective layer.
    类似技术:
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    FR2925438A1|2009-06-26|Liquid e.g. cleaning liquid, quantity heating device for e.g. windscreen of motor vehicle, has thermal conducting gel layer extending parallel to flexible silicone layer and covering assembly formed by tubular element and silicone layer
    同族专利:
    公开号 | 公开日
    JP2017206234A|2017-11-24|
    RU2017109090A|2018-09-20|
    US20170273144A1|2017-09-21|
    CN107215311A|2017-09-29|
    CA2961316A1|2017-09-21|
    FR3049153B1|2018-04-06|
    EP3223584A1|2017-09-27|
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    US20210179277A1|2019-12-13|2021-06-17|Rosemount Aerospace Inc.|Static plate heating arrangement|
    法律状态:
    2017-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-22| PLSC| Publication of the preliminary search report|Effective date: 20170922 |
    2018-03-29| PLFP| Fee payment|Year of fee payment: 3 |
    2019-03-29| PLFP| Fee payment|Year of fee payment: 4 |
    2020-12-18| ST| Notification of lapse|Effective date: 20201110 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1652400A|FR3049153B1|2016-03-21|2016-03-21|HEATED ELECTRICAL CIRCUIT AND HEATER ELEMENT FOR WIPER BLADE, METHOD FOR PRODUCING HEATING ELEMENT, AND WIPER BLADE|
    FR1652400|2016-03-21|FR1652400A| FR3049153B1|2016-03-21|2016-03-21|HEATED ELECTRICAL CIRCUIT AND HEATER ELEMENT FOR WIPER BLADE, METHOD FOR PRODUCING HEATING ELEMENT, AND WIPER BLADE|
    EP17160961.3A| EP3223584A1|2016-03-21|2017-03-14|Electric heating circuit and heating element for a windscreen wiper blade, method for the manufacture of a heating element, and windscreen wiper blade|
    CA2961316A| CA2961316A1|2016-03-21|2017-03-16|Electric heating circuit and heating element for a windscreen wiper blade, method for the manufacture of a heating element, and windscreen wiper blade|
    JP2017052286A| JP2017206234A|2016-03-21|2017-03-17|Electric heating circuit and heating element for windscreen wiper blade, method for manufacture of heating element, and windscreen wiper blade|
    RU2017109090A| RU2017109090A|2016-03-21|2017-03-20|HEATING ELECTRIC CIRCUIT AND HEATER OF THE WIPER OF THE WIPER, METHOD FOR MANUFACTURING THIS HEATER AND WIPER OF THE WIPER|
    US15/464,477| US20170273144A1|2016-03-21|2017-03-21|Electric heating circuit and heating element for a windscreen wiper blade, method for the manufacture of a heating element, and windscreen wiper blade|
    CN201710169234.2A| CN107215311A|2016-03-21|2017-03-21|Electric heating circuit, heating element heater and its manufacture method and wiper blade|
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