• 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:
    CONTROLLED PNEUMATIC DEVICE FOR AUTOMATIC INFLATION-DISINFLATION OF A PARTICULAR PNEUMATIC The device comprises a hollow body (16) comprising an inlet orifice (20) subjected to means for injecting a gas fluid under pressure, an inflation orifice (24) in communication with the tire at a pressure (P0), and an outlet (21) of said fluid to the outside; according to the invention, it comprises a piston (25) mounted sliding inside at least one chamber (17) of the body (16) under the effect of the injection of the fluid through the inlet orifice (20), said piston (25) operating together with a movable assembly (35, 36, 39) in combination with an exhaust flap valve (27) so that: - under the effect of the injection of the gaseous fluid at a pressure (PI> P0) the piston (25 ) and the movable assembly (35, 36, 39) are linearly displaced against a first elastic member (38) in relation to the exhaust flap valve (27), which remains fixed, until a stop position of said piston ( 25) and said assembly (35, 36, 39) corresponding to the opening of the injection flap valve (36) and the closing of the exhaust flap valve (27), - under the effect of the injection of the gaseous fluid at a pressure (P2> PI), the plunger (25) is displaced against (...).
    公开号:BR112014005613B1
    申请号:R112014005613-7
    申请日:2012-09-12
    公开日:2020-10-13
    发明作者:Stéphane Fazekas
    申请人:Teleflow；
    IPC主号:
    专利说明:

    [0001] The invention is linked to the technical sector of controlled pneumatic devices, of automatic inflation-deflation of a particular tire, but also of all the capacities for storing a gaseous fluid under pressure.
    [0002] These controlled pneumatic devices, with automatic inflation-deflation of a tire, are intended to be controlled remotely and notably from the interior of a vehicle, for example. These devices allow to be able to regulate the pressure of the tires from inside the vehicle by a simple interaction with a control interface. This is particularly useful for rally-type, military or agricultural vehicles where the tire pressure is generally less than 5 bars. These devices are generally designed for all vehicle drivers who need to vary the tire pressure. And notably to vary the tire pressure to adapt to the linings on which they move, the loads they carry and the speed of travel of the vehicle.
    [0003] Other applications are possible for these devices and notably all applications in which it is necessary to inject or automatically remove, in a controlled manner, a gaseous fluid from a storage capacity of said fluid.
    [0004] The closest state of the art in this area, and to the applicant's knowledge, is described in the European patent document number EP 0 511 135 of which the applicant is the holder.
    [0005] This patent document describes an arrangement of a pneumatic device controlled by automatic inflation-deflation of a tire.
    [0006] With reference to figure 1, this inflation-deflation device of a capacity is of the type that comprises, on the one hand, a cavity (1) divided by a flexible membrane (2) in two so-called control chambers (3) and exhaust (4) that communicate, for the first, with a circuit for placing under relative pressure and, for the second, with a perforation (5) in relation to the capacity, and with at least one exhaust duct (6 ) which flows out of the cavity and, on the other hand, a flap valve system (7) capable of closing or opening the passage at least between the perforation and the exhaust duct and comprising: - a seat (8) intended to operate together with an inflation flap valve (9), - a seat (10) in relation to the perforation (5) and intended to operate together with an exhaust flap valve (11), - an elastic member ( 12) which tends to keep the inflation flap valve (9) in the closed position on the seat (8), - an elastic member ( 13) which tends to keep the flap valve (11) in the closed position of the seat (10).
    [0007] This prior art device is notable for the fact that: - the seat (8) is presented by the membrane (2) inside the control chamber (3), - the inflation flap valve (7) and the valve exhaust hinges (11) are mounted in opposition, on one side and the other of the membrane (2) and are sensitive to the position of the latter, so as to form a movable equipment of two hinge valves subjected to the membrane (2), - and the elastic organ (13) is associated with the membrane (2), and due to the fact that a stop (14) is provided that limits the path of the equipment in the opening of the exhaust flap valve (11).
    [0008] A drawback of this device is that it is arranged so that the disinflation of the capacity is done at low pressure. This means that it is impossible to be able, when said device is subjected to a measuring device, to measure at low pressure. In fact, if you want to make a measurement of a relatively low pressure, you would go directly to a tire deflation stage instead of taking the measurement. Numerous vehicles use small inflation pressures of less than 5 bars, notably agricultural vehicles, geological surveys, 4 x 4 vehicles, etc.
    [0009] The invention was established in order to correct this inconvenience in a simple, safe, effective and rational way.
    [0010] The problem that the invention proposes to solve is, therefore, to make a pneumatic device controlled by automatic inflation-deflation of a particular tire, which allows to manage pressures at a low limit. This means that with such a device, it will be possible to inflate a tire at low pressure but also to measure a small pressure.
    [0011] To solve this problem, a pneumatic device controlled by automatic inflation-deflation of a particular tire was designed and developed, which comprises a hollow body comprising an inlet orifice subjected to means of injection of a gaseous fluid under pressure, notably air, an inflation orifice in communication with the tire at a pressure (P0) and an escape orifice for said gaseous fluid to the outside of the hollow body.
    [0012] According to the invention, this device comprises a piston mounted sliding inside at least one chamber of the body under the effect of the injection of the gaseous fluid under pressure through the inlet orifice, said piston operating together with a movable assembly in combination with an exhaust flap valve so that: - under the effect of the injection of the gaseous fluid at a pressure (P1> P0) the plunger and the movable assembly are linearly displaced against a first elastic member in relation to the valve exhaust hinge, which remains fixed, to a stop position of said plunger and said assembly corresponding to the opening of the inflation orifice and the closing of the exhaust orifice, - under the effect of the injection of the gaseous fluid at a pressure ( P2> P1), the plunger is displaced against a second elastic member and in relation to the movable set that remains in the stop position, causing the closing of an inflation member (39) and the displacement of the inflation valve. exhaust hinge against a third elastic organ that corresponds to the opening of the exhaust orifice from the inflation orifice that remains open.
    [0013] In this way, the injection of a gaseous fluid at a pressure P1 higher than PO causes the injection flap valve to open and allows the tire connected to the inflation hole to be inflated. And the injection of a gaseous fluid at a pressure P2 higher than P1 causes the injection flap valve to open and the flap valve to close and the inflation organ to close, which allows the tire to deflate. The injection of said gaseous fluid is carried out in a controlled manner through a control interface from the interior of a vehicle, for example.
    [0014] Preferably, the body comprises three internal chambers arranged in succession, said plunger is suitable for sliding inside the first chamber, then dividing the latter into two different pressure zones, openings are made between the first zone of the first chamber and the second zone and the second and third chambers thus allowing their communication, the first zone of the first chamber being arranged with said inlet orifice on a first side of said plunger and the second zone of the first chamber being arranged with said escape orifice on the other side of said plunger, and the third chamber being arranged with said inflation orifice.
    [0015] According to a preferred embodiment, in the device according to the invention, said plunger comprises a hollow plunger head intended to slide tightly within the first chamber, and a hollow plunger body, in communication with said plunger head and intended to slide tightly into the exhaust flap valve by closing the opening between the second zone of the first chamber and the second chamber, the plunger body opening into the second chamber and being closed by the movable element, said body and said plunger head are in communication with the inlet port.
    [0016] Said movable element comprises a central axis mounted sliding inside the hollow body, an injection hinge valve and an inflation organ mounted fixed on said axis, said injection hinge valve being arranged to close the opening between the second and third chambers, and said inflation organ being arranged to close the passage between the first zone of the first chamber and the second chamber.
    [0017] Preferably, said inflation organ comprises a first guide part which is in the form of a cylindrical element, fixed on the axis and which is inserted partly and in a non-watertight manner, at the end of the body of plunger, a second part that plays the role of an inflation hinge valve, also in the form of a cylindrical element with a diameter substantially equal to that of the plunger body and intended to come into contact with said plunger body, and a third part that is in the form of a non-return flap valve, influenced by the direction of passage of the gaseous fluid, so that it is free in the direction that goes from the first zone of the first chamber to the second chamber, and is watertight fast going in the opposite direction and not stopping at a slow flow that goes in the same reverse direction.
    [0018] Advantageously and to allow more comfort of use and precision to the device according to the invention, the latter is subjected to pressure measurement means that are connected to the inlet port.
    [0019] In this way it is possible to carry out a pressure measurement present in the tire with the aid of any means that allows a pressure measurement, such as a manometer for example. This device also allows the pressure to be measured statically.
    [0020] In a special embodiment of the invention, said first elastic member is fixed, at one end, to said injection flap valve and, at the other end, it is in stop against the opposite wall of the third chamber. Said second elastic member is disposed within said piston between the bottom of said piston and the first guide part of said inflation member. And said third elastic member is fixed at one end to said flap relief valve and at the other end is in stop against the opposite wall of said second chamber.
    [0021] Other features and advantages of the invention will clearly stand out from the description that is made of it below, as an indication and in no way limiting, with reference to the attached figures, in which: - figure 1 is a longitudinal sectional view a pneumatic controlled device of automatic inflation-deflation of a particular tire, according to the prior art; figure 2 is a longitudinal sectional view of a pneumatic device controlled by automatic inflation-deflation of a particular tire, according to the invention, in a resting position; figure 3 is a longitudinal sectional view of a pneumatic device controlled by automatic inflation-deflation of a particular tire, according to the invention, in an inflation or measurement position; figure 4 is a longitudinal sectional view of a pneumatic device controlled by automatic inflation-deflation of a particular tire, according to the invention, in a deflation position; figure 5 is a longitudinal sectional view of another embodiment of a pneumatic device controlled by automatic inflation-deflation of a particular tire, according to the invention, in a rest position. figure 6 is a longitudinal sectional view representing the movable assembly, which operates together with the plunger, according to another embodiment of the invention and in a resting position.
    [0022] For simplicity, the parts or elements of an embodiment that are found again in the same or similar way in another embodiment will be identified by the same numerical references and will not be described again.
    [0023] With reference to figures 2 to 5, the pneumatic device (15) controlled by automatic inflation-deflation of a particular tire, comprises a hollow body (16) in a non-limiting, substantially cylindrical manner and comprises three internal chambers ( 17, 18, 19) arranged successively.
    [0024] The first chamber (17) comprises an intake orifice (20) and an exhaust orifice (21). The inlet orifice (20) is intended to be subjected to gaseous fluid injection means, generally consisting of piping elements, swivel joints, pressure regulating means and a compressor, for example, and pressure measuring means such as a manometer. The exhaust port (21) is in communication with the outside of the hollow body (16). This allows, when the tire is deflated, to evacuate the gaseous fluid directly out of the hollow body (16) without again passing through the rotating joints and pressure regulating means. Openings (22, 23) are carried out between the first (17) and second (18) chambers and the second (18) and third (19) chambers thus allowing their communication. The third chamber (19) comprises an inflation orifice (24) intended to be connected to the tire to be inflated-deflated or from which the pressure must be measured. This inflation port (24) can of course be connected to any other capacity for storing gaseous fluid under pressure.
    [0025] The chambers (17, 18, 19) and the holes (20, 21, 24) have generally cylindrical shapes.
    [0026] The connections between the orifices (20, 21,24) and the means of measurement, injection of gaseous fluid or with the pneumatic, are made through flexible pipes not known to the professional. The device (15) being mounted on the vehicle rim, the connection between the compressor and said device (15) is made by means of a system comprising a rotating joint. This system is not part of the invention and is also well known to the professional, it will not be described in more detail.
    [0027] A plunger (25) is disposed inside the first chamber (17) and then divides the latter into two zones (17a, 17b) of different pressures. The inlet port is present in the first zone (17a) and the exhaust port is present in the second zone (17b). Said piston (25) is suitable for sliding between the inlet port (20) and the exhaust port (21). This plunger (25) comprises a plunger head (25a) and a plunger body (25b). The plunger head (25a) has a cylindrical shape with a diameter substantially equal to that of the first chamber (17). This plunger head (25a) also comprises an annular jute (26) arranged at its periphery to allow it to slide into the first chamber (17) in a watertight manner.
    [0028] This plunger head (25a) is extended by the plunger body (25b) which is also cylindrical with a diameter smaller than that of the plunger head (25a). The diameter of the plunger body (25b) is such that it is suitable for penetrating into the second chamber (18) through the opening (22) present. This plunger body (25b) is capable of sliding tightly into an exhaust flap valve (27) disposed within the second chamber (18) to close said opening (22). The exhaust flap valve (27) is thus in the form of a cylindrical sleeve (27a) comprising a shoulder (27b) intended to fill said opening (22). The shoulder (27b) comprises on its face in front of the opening (22), an element that forms a joint (28) to ensure tightness. The sleeve (27a) is thus designed to receive the plunger body (25b) and thus comprises an annular joint (29) on its internal periphery to also ensure tightness.
    [0029] The exhaust flap valve (27) is held in the closing position of the opening (22) by means of a spring (30) fixed at one end to said sleeve (27a) and at the other end in stop against the wall opposite of said second chamber (18).
    [0030] A shoulder (31) is also carried out between the piston head (25a) and the piston body (25b). This shoulder (31) is intended to operate together with the end of the sleeve (27a) so that, when the plunger (25) slides and reaches the end of the path, it makes contact with said sleeve (27a) and slide it against said spring (30) to release the opening (22) between the second zone (17b) of the first chamber (17) and second (18) chambers.
    [0031] Said plunger (25) is poured and opened at both ends. The end in the second chamber (18) is fully open and the end in the first chamber (17) is opened by means of at least one channel (32, 33), thus leaving the plunger (25) a face background (34). The plunger (25) is thus in communication, at one end, with the intake port (20) and, at the other end, with the second chamber (18). The plunger (25) also operates together with a movable element (35, 36, 39) which comprises an axis (35) on which an injection flap valve (36) is mounted to close the opening (23) between the second (18) and third (19) chambers. This injection flap valve (36) is associated with a spring (38) fixed at one end to said injection flap valve (36) and at the other end stopping against the opposite wall of the third chamber (19). An inflation member (39) is also mounted fixed to said axis (35) and operates together with the open end of said piston body (25b). The inflation member (39) comprises three parts, a first guide part (39a) which is in the form of a cylindrical element fixed on the axis (35), which comprises holes to let the gaseous fluid pass, and which comes insert partly and in a non-watertight manner at the end of the plunger body (25b) in order to guide said plunger (25) to keep it centered. The second part (39b) of the inflation organ (39) acts as an inflation hinge valve and is also in the form of a cylindrical element with a diameter substantially equal to that of the piston body (25b) and intended to come into contact with contact with said plunger body (25b). This second part (39b) is also fixed to the axis (35). The third part (39c) of the inflation organ (39) is in the form of a ring or a free or flexible washer made of elastomeric material, notably made of rubber, arranged in an outcropping manner and influenced by the direction of fluid flow gaseous. This third part plays the role of a non-return flap valve (39c).
    [0032] This third part (39c) is then a non-return flap valve and aims to retain a fast flow from the second chamber (18) to the first zone (17a) of the chamber (17) to facilitate placement of the first zone (17a) of the chamber (17). This non-return flap valve (39c) is not airtight to a slow flow in order to compensate for slight leaks inside the pipeline to remarkably stabilize the measurement phase.
    [0033] An elastic element, notably a spring (40) is disposed between the first part (39a) of the inflation member (39) and the bottom face (34) of the piston (25) that pushes the latter against an element of stop (41) fixed to the end of the shaft (35).
    [0034] At the time of use and referring primarily to figure 2 which represents the resting phase of the device (15), the first (17) and second (18) chambers are at atmospheric pressure and the third (19) is at pressure of the tire, if a tire is connected to the inflation port (24). The plunger (25) is in a resting position. The injection flap valve (36) of the third chamber (19) is closed and held in that position by the spring (38) and also by the tire pressure. The inflation member (39) is in the open position, meaning that the second part (39b) does not come into contact with the end of the piston body (25b). The exhaust flap valve (27) is closed and held in that position by the spring (30).
    [0035] This way, and advantageously in relation to the state of the art, there is a single flap valve (36) that opens or closes the connection with the tire.
    [0036] In this case, nothing happens, this is one of the advantages of the invention, because you have the first (17) and second (18) chambers that are at atmospheric pressure, so the device (15) is not in permanent pressure . Thus, in the resting phase, there is no effort exerted on the swivel joints disposed between the inlet orifice (20) and the gas injection medium under pressure.
    [0037] With reference to figure 3 which represents the inflation phase, the first zone (17 a) of the first chamber (17) receives gaseous fluid under pressure. In that case, this chamber is at a pressure P1 higher than the pressure P0 of the tire. This causes the piston to slide (25) to an inflation position, in which the shoulder (31) between the piston head (25a) and the piston body (25b) comes into contact with the valve sleeve (27a) exhaust flap (27), without moving it. This displacement of the piston (25) causes the simultaneous displacement of the movable element (35, 36, 39), namely, the shaft (35), the injection flap valve (36) and the inflation member (39) to a stop position of one of the three elements. In this embodiment it is the injection flap valve (36) that comes in stop against the opposite wall of the third chamber (19). Because of this, the spring (38) that holds the flap valve in the closed position compresses and the injection flap valve (36) releases the opening (23) between the second (18) and the third (19) chamber. The exhaust flap valve (27) remains fixed and in the filling position. When it comes to a stop, the pressure is such that it does not displace any other elements. The gaseous fluid then passes from the first zone (17a) of the first chamber (17) to the plunger (25), escapes through the non-return flap valve (39c), which is passed in this direction, from the inflation organ (39) which it remained open, passes to the second chamber (18) and crosses the third chamber (19), the injection flap valve (36) being open, to thereby inflate the tire.
    [0038] To carry out this inflation step, it is evidently necessary that the pressure P1 of the gaseous fluid injected through the inlet port (20), is higher than that of the PO tire. But also that the force exerted by said pressure is sufficient to meet the return force of the spring (38) which tends to keep the injection flap valve (36) of the third chamber (19) in the closed position. This force exerted by the pressure must also be small enough to not meet the return force exerted by the spring (40) inside the piston (25) and thus not trigger the inflation phase.
    [0039] It is evident that the diameters of the chambers (17, 18, 19) and the stiffness of the springs (30, 38, 40) are calculated and modifiable in the design of the device (15) to obtain the desired pressure ranges.
    [0040] In the measurement phase, and still referring to figure 3, there is exactly the same arrangement, the difference being that the fluid injection is interrupted, without replacing the piping outdoors. The device elements (15) thus remain in the same position as for the inflation phase, the tire pressure is balanced with that of the three chambers (17, 18, 19) and that of the pipeline through which it is possible to read the value of pressure in static mode on a manometer notably. The non-return flap valve (39c) is not impermeable to a slow flow of gaseous fluid, slight leaks in the piping and in the injection means are compensated to balance the pressure between the tire and the measuring means.
    [0041] With reference to figure 4 representing the disinflation phase, the first zone (17a) of the first chamber (17) receives gaseous fluid under a pressure P2 greater than for the inflation phase. That chamber is then at a pressure P2 higher than the pressure P1. This causes the plunger (25) to slide to a disinflation position, in which the shoulder (31) between the plunger head (25a) and the plunger body (25b) comes into contact with the valve sleeve (27a) of the exhaust flap, and move it slightly so as to open said flap valve (27) and release the opening (22). This displacement of the plunger (25) in this disinflation position takes the end of the plunger body (25b) in contact with the inflation flap valve (39b), of the inflation organ which results in the closing of the latter. This displacement also causes the simultaneous displacement of the movable element (35, 36, 39), namely, the shaft (35), the injection flap valve (36) and the inflation member (39) to a stop position of one of the three elements. In this embodiment it is the injection flap valve (36) that comes in stop against the opposite wall of the third chamber (19). Because of this, the spring (38) that holds the injection flap valve (36) in the closed position compresses and the injection flap valve (36) releases the opening (23) between the second (18) and the third (19) chamber. The two flap valves (27, 36) being in the open positions, the gaseous fluid then passes from the tire to the third chamber (19), and then, the injection flap valve (36) is open and the inflation organ ( 39) being closed, for the second chamber (18), and then the exhaust flap valve (27) being also open, for the second zone (17b) of the first chamber (17) on the side of the exhaust port (21 ) to deflate the tire.
    [0042] To carry out this disinflation phase, it is evidently necessary that the force exerted by the pressure injected through the inlet orifice (20) is sufficiently large to meet the return force of the three springs (30, 38, 40) present in the device (15) to allow the displacement of the flap valves (36, 27) and that of the plunger (25) to the disinflation position.
    [0043] The phase of returning to the resting position is characterized by the fact that there is placement of the pipeline in the open air at the level of the intake orifice (20). Because of this, the gaseous fluid in the tire is braked by the non-return hinge valve (39c) of the inflation member (39) which is watertight at a rapid flow. Because of this, the pressure on the plunger (25) is released and it can return to its resting position.
    [0044] Figure 5 represents a second embodiment of the device (15) according to the invention. This second embodiment comprises the same elements as the first but differs in that the stop of the moving element is performed by the inflation agency (39). This ensures better stability in the disinflation position.
    [0045] With reference to figure 6, another embodiment is possible concerning the movable element (35, 36, 39) of the piston (25). In this embodiment, the anti-return flap valve (39c) of the inflation member (39) is represented by a flexible washer. The inflation flap valve (39b) is arranged inside the piston body (25), in order to let the gaseous fluid pass through the channels (32, 33) during the inflation phase, at pressure P1 in the first zone (17a) of the first chamber (17), and coming into contact with the bottom (34) of the plunger (25) to fill the channels (32, 33) and close the inflation organ (32, 33), in the disinflation phase, under pressure P2 in the first zone (17a) of the first chamber (17).
    [0046] As it stands out from the above, the invention provides a pneumatic device (15) controlled by automatic inflation-deflation of a particular tire, which gives full satisfaction and which in particular has the advantages of being able to manage pressures at a low limit , that is to say to be able to measure a small pressure, to inflate a tire in low pressure and to deflate in high pressure. Such a device also allows for a longer track duration than certain devices of the prior art.
    [0047] It is evident that the invention is not limited to the embodiment described above by way of example, but that it extends to all forms of embodiments covered by the appended claims.
    权利要求:
    Claims (11)
    [0001]
    1. Pneumatic device (15) controlled by automatic inflation-deflation of a particular tire, which comprises a hollow body (16) comprising an inlet orifice (20) subjected to means of injection of a gaseous fluid under pressure, notably air , an inflation orifice (24) in communication with the tire at a pressure PO and an escape orifice (21) of said gaseous fluid to the outside of the hollow body (16), the device comprises a sliding mounted piston (25) within at least one chamber (17) of the body (16) under the effect of the injection of the gaseous fluid under pressure through the inlet orifice (20), said piston (25) operating together with a movable assembly (35, 36, 39 ) in combination with an exhaust flap valve (27) so that: - under the effect of the injection of the gaseous fluid at a pressure P1> PO the piston (25) and the movable assembly (35, 36, 39) are displaced linearly against a first elastic member (38) in relation to the exhaust flap valve (27 ), which remains fixed, until a stop position of said plunger (25) and said assembly (35, 36, 39) corresponding to the opening of the injection flap valve (36) and the closing of the exhaust flap valve (27), characterized by the fact that: - under the effect of the injection of the gaseous fluid at a pressure P2> P1, the plunger (25) is displaced against a second elastic member (40) and in relation to the mobile assembly ( 35, 36, 39) that remains in the stop position, causing an inflation organ (39) to close and the exhaust hinge valve (27) to move against a third elastic member (30) corresponding to the opening the exhaust flap valve (27) from the injection flap valve (36) which remains open.
    [0002]
    2. Device (15) according to claim 1, characterized by the fact that the body comprises three internal chambers (17, 18, 19) arranged in succession, said piston (25) being able to slide inside the first chamber (17), then dividing the latter into two zones (17a, 17b) of different pressures, openings (22, 23) are made between the second zone (17b) of the first chamber (17) and the second chamber (18) and the second (18) and third (19) cameras thus allowing their communication.
    [0003]
    Device (15) according to claim 1, characterized by the fact that the first zone (17a) of the first chamber (17) has the intake port (20) on the first side of said plunger (25) and the the second zone (17b) of the first chamber (17) has the exhaust port (21) on the other side of said piston (25), and the third chamber (19) has the inflation port (24).
    [0004]
    Device (15) according to any one of claims 2 to 3, characterized in that said plunger (25) comprises a hollow plunger head (25a) designed to slide tightly into the first chamber (17) , and a hollow plunger body (25b), in communication with said plunger head (25a) and intended to slide tightly into the exhaust flap valve (27) closing the opening (22) between the second zone (17b) of the first chamber (17) and the second chamber (18).
    [0005]
    Device (15) according to claim 4, characterized by the fact that the plunger body (25b) empties into the second chamber (18) and is filled by the movable element (35, 36, 39), said body ( 25b) and said plunger head (25a) are in communication with the inlet port (20).
    [0006]
    Device (15) according to any one of claims 2 to 5, characterized in that said movable element (35, 36, 39) comprises a central axis (35) mounted sliding inside the hollow body (16), an injection flap valve (36) and an inflation member (39) mounted fixed on said axis (35), said injection flap valve (36) being arranged to close the opening (23) between the second ( 18) and third (19) chambers.
    [0007]
    Device (15) according to claim 6, characterized by the fact that said inflation member (39) comprises a first guide part (39a) which is in the form of a cylindrical element, fixed on the axis (35) and which is inserted in part and in a non-watertight manner, at the end of the plunger body (25b), a second part (39b) that plays the role of inflation hinge valve, also presenting itself in the form of a cylindrical element with a diameter substantially equal to that of the plunger body (25b) and intended to come into contact with said plunger body (25b), and a third part (39c) which is in the form of an anti-hinge valve return, influenced by the direction of passage of the gaseous fluid, so as to be free in the direction that goes from the first zone (17a) of the first chamber (17) to the second chamber (18), and sealed to a fast flow that goes in the direction reverse and do not stop at a slow flow that goes in the same direction reverse.
    [0008]
    Device (15) according to any one of claims 1 to 7, characterized in that it is subjected to pressure measurement means that are connected to the inlet port (20).
    [0009]
    Device (15) according to any one of claims 2 to 8, characterized in that said first elastic organ (38) is fixed at one end to said injection flap valve (36) and at the other end is stop against the opposite wall of the third chamber (19).
    [0010]
    Device (15) according to any one of claims 4 to 9, characterized in that said second elastic member (40) is disposed within said piston between the bottom of said piston and the first guide part ( 39a) of said inflation agency (39).
    [0011]
    Device (15) according to any one of claims 2 to 10, characterized in that said third elastic member (30) is fixed at one end to said flap valve (27) and at the other end is stopping against the opposite wall of said second chamber (18).
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    同族专利:
    公开号 | 公开日
    WO2013038107A1|2013-03-21|
    CN103889744A|2014-06-25|
    FR2979853B1|2013-09-20|
    ZA201401762B|2015-11-25|
    PL2755830T3|2016-04-29|
    BR112014005613A2|2017-04-04|
    CA2848321A1|2013-03-21|
    AU2012307203A1|2014-05-01|
    EP2755830A1|2014-07-23|
    US9308788B2|2016-04-12|
    FR2979853A1|2013-03-15|
    EP2755830B1|2015-11-18|
    CA2848321C|2019-01-15|
    IN2014KN00787A|2015-10-02|
    AU2012307203B2|2016-05-12|
    US20150075642A1|2015-03-19|
    CN103889744B|2016-12-07|
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    法律状态:
    2018-03-06| B25A| Requested transfer of rights approved|Owner name: TELEFLOW (FR) |
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-04-07| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-10-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/09/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1158104|2011-09-13|
    FR1158104A|FR2979853B1|2011-09-13|2011-09-13|PNEUMATIC PILOT DEVICE FOR AUTOMATIC INFLATING-DEFLATION OF A TIRE, IN PARTICULAR|
    PCT/FR2012/052039|WO2013038107A1|2011-09-13|2012-09-12|Controlled pneumatic device for automatically inflating/deflating a tyre, in particular|
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