MXPA06011744A - Improved tire installation and removal tool - Google Patents

Abstract

A tool is provided for assistance in removing and installing tires on wheel rims. The tool can be provided with a handle having a tool head disposed at each end. Each tool head is designed to fit between a tire bead and an associated wheel rim so that when the handle is levered, a force is applied to the bead and rim that moves the bead over the rim. Each tool head has a substantially flat portion which can be easily fit between opposing tire and wheel rim surfaces. One tool head has a slightly hooked distal tip to enable axial engagement with a flange of the wheel rim, and thus can be used either for installing a tire on a rim or for removing a tire from the rim. Another tool head has a protrusion disposed near the tool midpoint to engage a flange of the wheel rim. The protrusion can be a roller member having a pin axis perpendicular to an axis of the tool handle. This roller can be fabricated from a soft polymer or rubber material so that the tool will not damage soft-metal wheel ri ms such as aluminum. The handle can have a pronounced curvature that allows a portion of the handle body to be received within the cavity formed by the wheel rim. This curvature allows for a greater range of motion of the handle, thus providing the user improved leverage as compared to prior tools. The tool heads may be permanently attachedto the handle, or they may be removable to allow the user to customize the tool to the desired application.

Description

IMPROVED TOOL FOR THE INSTALLATION AND CHANGE OF A RIM Field of the Invention The invention relates to the tools for installing and changing vehicle tires by removing them from the wheel rim. In particular, the invention relates to a manually manipulated tool that is structured in such a way that it fuses with the rim enhancement of the rim and thus be able to manipulate the rim axially and internally (related to the rim axis) from a rim. gear position with the rim enhancement of the rim. By being able to help separate the rim tire heel from the rim rim, the tool allows easy rim travel relative to the rim in axial and radial directions, making it easier to install or change.

Background of the Invention Several tools are known to install and change the tires of vehicles on the rim of the rim. In a manual version, said tools generally comprise an elongated bar as a lever, which is taken by the user, and a tool with a flat end to be able to insert it between the rim tire bead and the rim of the rim. The rim tire heel is usually reinforced with wires and resists deformation. The cover heel has the function of, seal a tire already mounted on the rim of the rim. For this purpose, the tire bead has a diameter smaller than the diameter of the rim rim and is between the spaced rims of the rim. The cover bead resists tension and is pushed axially against the rim and sealed with the rim, inter alia, by pneumatic pressure on the rim or in a central tube inside the rim.

To remove a rim from the rim, the cover bead seal must be removed or "broken" by moving them axially and inwardly to disassemble them from the rim gear. Then the two cover heels and the walls of the rim pass axially on one of the rim enhancements in order to remove the rim from the rim. Because the diameter of the cover bead is less than that of the wheel, it is possible to exert force on the cover bead on the rim, by tightening the cover bead and / or deforming the oval-shaped cover bead and moving The lighter dimension of the oval around the rim.

A working end of a tool is typically inserted between the rim tire bead and the rim rim. The user applies some pressure to the opposite side of the lever, using the tool to exert a lift and the rim wheel as a fulcrum or fulcrum. Then a small part of the rim tire bead is raised axially on the rim flange. This process is repeated in successive steps to increase the length of the roof bead on the axial exterior of the rim flange, and often two or three levers are used around the periphery of the rim of the rim to hold a portion of the roof bead for prevent it from getting back into the rim enhancement while another end of the deck heel is raised over the rim enhancement. After a certain angular section of the roof heel has passed over the rim elevation, raised at a distance from that section ex. In an opposite position diametrically) pulls the portion of the roof bead that is already outside the rim radially and internally on the outside, instead of tending to pull that portion back between the rim elevations. It is then simpler to pass axially what is missing from the cover heel on the rim until the entire heel of the tire is outside the rim.

There are machines that work with another type of power to achieve the same function. When using these devices, the rim is commonly mounted on a rotating shaft that breaks the cover heel. A short section of the rim tire bead is then removed from the rim flange, and a tool is placed under the heel of the already raised tire and fitted with a driving shaft on the rotating shaft. An end of the tool then passes circumferentially around the periphery of the rim rim, pulling the entire heel of the tire over the rim flange.

With each of the aforementioned techniques, in order to completely remove the rim from the rim, the cover bead on the opposite side must pass over the same rim rim with the first cover bead in a similar manner. To install the tire in a wheel, the same process must be followed, but in the opposite way, manually or using devices for this purpose.

Recently, truck tire manufacturers have introduced tires with a size that can take the place of the traditional "dual tire" pairs used for trailer applications. These new tires are significantly wider than any thickness of a simple tire with which they can be replaced. Because of all this, they can also have a significant depth in the tires of the tires, which can complicate the dismantling process by using the tools previously described.

Often, the tires of the trucks are changed on the roads, as when a driver is struck by a tire halfway on the road. In these cases, the driver usually asks for professional help to provide on the roads instead of trying to change it on his own. It is by experiences like this that the existence of a tool is desired to be able to perform the functions described above but in a simple way and with a compact storage to be able to store and transport it easily. Additionally, as it is also anticipated that a tire may strike out in the winter, the tool should reduce or eliminate the user's need to stand on the rim or rim to remove the rim from the wheel. This will reduce the possibility of the user slipping and getting hurt by applying the necessary force on the lever to operate the tool.

Furthermore, there may be the advantage that allowing the removal of the damaged tire and installing a new tire does not have to remove the wheel rim from the vehicle. This can be a particular advantage for utility vehicles, such as backhoes, etc., where the tires are particularly large and can be very difficult to remove from the associated axle of the vehicle. It is also a great advantage because it can accelerate the entire process when replacing a tire.

Therefore, there is a need for an easy-to-use tool that is effective to install and change any variety of tire thickness and size of your own rim, including the new tires of trucks with a significant size and that this tool can be used by drivers safely, even in any weather condition.

Description of the invention A tool for a rim is described as comprising the head of a tool and a lever, said tool head has a gear surface with the rim and another gear surface with the rim, and said tool head has been connected to a tool. first extreme of said lever. The lever must have a substantially U-shaped portion positioned adjacent said tool head. The substantially U-shaped portion must be fabricated with the size and configuration to be received within the space formed between the first and second rim surfaces of the rim diametrically opposed when said rim gear surface of the rim is It meshes with the wheel.

The tool of a tire is described below comprising a member of the lever connected between the first and the second working end. Each working end must have a gear surface with the rim and a gear surface with the rim, said lever member generally defining a longitudinal axis between said first and second working ends. A first leg can project laterally relative to the longitudinal axis and comprise the first and second fragment of the leg, said first segment of the leg that is connected to the first working end of the tool, said second segment of the leg being spaced at a first lateral distance from the longitudinal axis. A second leg can project laterally relative to the longitudinal axis and comprise a third and fourth segment, said third segment connected to the second segment of the first projection leg and the fourth segment connected to the second working end of the tool, the third segment is spacing a second lateral distance of said longitudinal axis. So when the gear surface with the rim and the gear surface with the rim of the first working end are engaged with the rim and with the rim, respectively, the lever member moves in a first direction to move the rim with respect to the rim of the rim; and the second and third segment are received within a cavity formed by an upper portion of the rim rim enhancement.

Also disclosed is a method for removing a rim from a rim which comprises: a tool with a head and a lever, the head of the tool has a gear surface with the rim and a gear surface with the rim, the head of the rim the tool is connected to a first end of the lever, and the lever has a substantially ü-shaped portion positioned adjacent to the head of the tool; placing the head of the tool between the rim flange of the rim and the rim cap heel so that the gear surface with the rim makes contact with the bead of cover and the gear surface with the rim of the rim make contact with the rim rim enhancement; and by moving the lever in a first direction to impart force to the cover bead to move it with respect to the rim enhancement of the rim; where the movement step comprises receiving the substantially U-shaped portion of the lever within a space defined by the first and second diametrically opposed surfaces of the rim enhancement.

Brief Description of the Drawings Other objectives, advantages and novelties of the invention will be more apparent from the following detailed description of the invention when considered in conjunction with the attached drawings where: Fig. 1 is a side view of a tool according to the invention for installing and changing a rim; Fig. 2 is an isometric view of the tool of FIG. 1; Figs. 3a and 3b are side and isometric views of a first head of the tool of Fig. 1; Figs. 4a and 4b are side and isometric views of a second head of the tool of Fig. 1; Figs. 5a and 5b are side and isometric views of a third head of the tool of Fig. 1.

Figs. 6a and 6b are side and isometric views of an alternative embodiment of the tool head of Figs. 3a and 3b; Fig. 7 is a detailed view of a removable joint for use with the tool of Fig. 1; Fig. 8 is a cross sectional view through the rim section of a rim, showing the tool of Fig. 1 with the head of the tool of Figs. 3a, b in the installation position with respect to the rim and its respective rim; Fig. 9 is a cross sectional view through a section of the rim and rim section of a rim, showing the head of the tool of Figs. 3a, b meshed with the rim and the rim; Fig. 10 is a cross sectional view through a section of the rim and rim section of a rim, showing the head of the tool of Figs. 3a, b in the partially rotated position by pressing a smaller section of the tire cover bead towards an upper rim rim enhancement; Fig. 11 is a cross sectional view through a section of the rim and rim section of a rim, showing the head of the tool of Figs. 3a, b raising the entire roof heel over the top rim; Fig. 12 is a cross sectional view through a section of the rim and rim section of a rim, showing the head of the tool of Figs. 3a, b meshed with the lower section of the rim tire bead and with the rim; Fig. 13 is a cross sectional view through a section of the rim and rim section of a rim, showing the head of the tool of Figs. 3a, b pressing the lower section of the tire cover bead on the top rim flange; Fig. 14 is a side view of the tool of Fig. 1, showing an exemplary positioning of the lever of the tool of Fig. 1, positioned in relation to a wheel of example; Figs. 15-18 are sectional cross-sectional views through a section of the rim and the rim section of a rim, showing the head of the tool of Figs. 3a, b pressing the smaller and larger section of the rim tire bead over the rim top rim; Figs. 19-21 are sectional cross-sectional views through a section of the rim and the rim section of a rim, showing the head of the tool of Figs. 4a, b pressing the smaller and larger section of the rim tire bead on the rim top rim; Figs. 22-23 are sectional cross-sectional views through a section of the rim and the rim section of a rim, showing the head of the tool of Figs. 4a, b by pressing the smaller and larger section of the tire cover bead under the top rim enhancement to install the rim on the rim.

Detailed description This description of the preferred embodiments is intended to be read in conjunction with the accompanying drawings, which are considered as part of the entire written description of this invention. The figures drawn are not necessarily to scale and certain features of the invention can be shown in exaggeration of scale in the drawing or in a certain schematic way with the interest of giving clarity and awareness. In the description there are relative terms such as "horizontal," "vertical," "up," "down," "upper" and "lower" as well as their derivatives (eg, "horizontally," "downward," "upward , "etc.) and should be used to refer to the orientation as described or shown in the figure drawn under discussion. These relative terms are for convenience of description and usually do not attempt to be required in a particular orientation. The terms including "inward" versus "downward," "longitudinal" versus "lateral" and others similar or of the same type must be interpreted relative to each other or to the axis of elongation, or to an axis or center of rotation , as appropriate. The terms referring to annexes, unions, and those related as "connected" and "interconnected," refer to the relationship where structures intervene that must be secured, joined or annexed to another either directly or indirectly through structures of union, as well as movable or rigid or related annexes, unless expressed otherwise. The term "operatively connected" is an attachment, union or connection that allows the relevant structures to operate as one tries with virtually that relationship.

A manual tool to manipulate the rim of a vehicle related to its own wheel is described. Specifically, an improved tool is described to allow the user to change the tire of a vehicle quickly and efficiently. With reference to Figs. 1 and 2, the tool 1 can comprise a first head of the tool 2 and a lever 4. The first head of the tool 2 can have a gear surface with the rim 6 and a gear surface with the rim 8. gear surfaces with the rim and with the rim 6, 8 can be configured in such a way that the head of the tool 2 can be operated between the rim 10 (Fig 8) of a rim 12 and with a respective head upper or lower 14, 16 of a rim 18 so that the rim can then be installed, or can be removed from the rim of the rim 12 simply by raising the portion of the lever 4 in a first or second direction. The rolling elements 37, 38 can be placed on the head of the tool 2 to minimize friction between the tool and the rim portions of the rim that is engaged, and also to minimize the possibility of the user suffering any damage to the wheel. the rim or the rim. The tool 1 may have a second head 20 connected to the portion of the lever 4 at an end opposite the first head of the tool 2, the second head of the tool 20 (Figs 4a, b) may have engagement surfaces with the rim and with the rim 46, 48 to install / remove a rim on the rim. If provided with a "double end" tool, you can make tool 1 more versatile, since the first and second head 2, 20 can have different sizes, shapes and geometries, and can be used to perform different functions when installing or removing a tire, or can be used with rims / wheels of different sizes. As a further advantage, the lever 4 alone can form an angle with respect to the first and second head of the tool 2, 20 to minimize interference with the wheel 12 during the lifting moment. This is of great advantage because it allows a maximum handling even when the person is alone and wants to change a tire with respect to the wheel using the tool.

Referring to Figs. 3a and 3b, the first head of the tool 2 may comprise the first and second end 22, 24 and a central portion 26. The first end 22 may be relatively thin, a flat member that is configured for easy insertion between a bead of upper (or lower) cover 14, 16 and its corresponding rim enhancement 10 (see Figs 8 and 9). The second end 24 can be configured to engage with a first end 28 of the lever 4. The central portion 26 can have a bead section 32 positioned adjacent the engagement surface with the rim 6 and a gear nib in the rim 36 positioned adjacent to the gear surface with the rim 8, which can respectively retain the cover bead 14, 16 and the rim of the rim 10 at a desirable relative position with respect to the head of the tool 2 during installation and / or the process of changing the tire.

It will also be appreciated that although the first head of the tool 2 is described as different and separate from the lever 4, the two can be formed integrally. Alternatively, the two pieces can be mechanically connected or joined, with pressure, snaps, welds, etc. Likewise, the second head of the tool 20 can be integrated with, or joined or connected to, the lever 4 in a manner similar to the first head of the tool 2. In one embodiment, the two parts can be connected and removable (eg with clasps) which can allow easy assembly and disassembly of the parts to facilitate storage and / or transportation of the tool (see Fig. 7).

As noted earlier, the first end 22 of the first head of the tool 2 may have a pair of oppositely disposed rim gear surfaces and rim rims 6, 8. As shown in Figs. 3a, b, the gear surface of the rim 6 can have a small concave profile to facilitate the retention of the rim cover bead 14, 16 on the surface of the tool 6 while the tire bead of the rim 14, 16 is being pulled over the rim 10 enhancement. In operation, the rim deck bead 14, 16 can slide along with a portion of the rim 6's gear surface slightly at the same time it is pulled over the rim flange. rim of the rim 10. Along with the concavity, this slight movement will be performed between the distal tip 30 of the first end 22 and a bead section 32 of the central portion 26 of the portion of the first head of the tool 2.

As noted above, the bead section 32 comprises a roller 37 to minimize friction between the rim 18 and the first head of the tool 2 during use. The roller 37 can be a member of a simple cylindrical shape with an axis 41 as a clasp or whatever is in the central position 26 of the portion of the first head of the tool 2 by an interference fit. Alternatively, the roller 37 may have a conical or spherical shape, and / or may include more than one roller, such as two or more spherical members, etc. The roller 37 can be made of any suitable material such as a soft metal, polymer, rubber, etc.

The gear surface with the rim 8 may comprise a convex portion 34 located between the first end 22 and the central portion 26 of the first head of the tool 2, and a nick portion 36 located adjacent the central portion 26 of the head of the tool 2. The gear surface with the rim 8 can subsequently have a concave section 33 located adjacent the first end 22. The concave section 33 and the nick portion 36 are configured to mesh with the rim enhancement of the rim 10. during different operations using the first head of the tool 2. The concave section 33 is configured to mesh with the rim enhancement of the rim 10 when the tool 1 is used to install a rim 18 in the rim 12, while the portion of nick 36 meshes with 10 boost when the tire is removed.

A roller 38 may be arranged adjacent the nick portion 36 to provide a rolling surface for seating the rim of the rim 10. In one embodiment, the roller 38 may be made of a non-metallic material (eg, rubber or polymer). Using a non-metallic roller 38 can be a great advantage when removing or putting a rim, in a wheel since if the roller is made of aluminum, it is a type of material that can be easily scratched or damaged with tool 1, which It can be made of steel or any other material strong enough. In one embodiment the roller 38 may be a simple cylindrically shaped member having an axis 40 such as a pin or what is in the central position 26 of the first portion of the head of the tool 2 when there is an interference gear. Alternatively, the roller 38 may have a conical or spherical shape and / or may include more than one roller, such as two or more spherical members, etc. The roller 38 can be made of any suitable material such as a soft metal, polymer, rubber, etc.

It can be noted that the rollers 37, 38 can be replaced to allow the first head of the tool 2 to be renewed for a smoother use and a longer time operation. Said replacement can be easily achieved through the installation / reinstallation of the pressing part 40, 41 associated with the roller. Additionally, instead of the rollers, with metallic or non-metallic surfaces, such as pieces with a discrete shape and size that are adhered or fixed in some way to the head of the tool 2 and can be easily replaced when they are already worn. In one example, solid or non-solid connections of a polymer material can be bonded on the appropriate surface of the tool to perform a function similar to that of one or more rollers.

The central portion 26 of the portion of the first head of the tool 2 can subsequently have a bead section 32 which, in conjunction with the concave surface 6 can serve to "hold" the third cover bead 14, 16 when the tool 1 is being operated to install remove the rim from the wheel. Therefore, the gear surface of the rim 6 is configured to physically engage with the rim 18 to raise the rim enhancement of the corresponding rim 10. Additionally, the nip 36 allows the tool 1 to be substantially fixed to the rim of the rim. 12 while allowing tool 1 to roll over rim 12 to raise it, lift rim 18 and remove it from rim 12, resulting in a greater efficiency of tool 1 when engaging and lifting the rim.

Referring to Figs. 4a and 4b, the second head of the tool 20 may comprise the first and second end 40, 42 and a central portion 44. The first end 40 may be a relatively thin and flat member easy to insert between a superior and inferior enhancement of the rim 14, 16 and a rim enhancement of rim 10 (see Fig. 8). The second end 42 can be configured to engage with a second end 50 of the lever 4. The oppositely disposed rim gear and rim gear surfaces 46, 48 can be positioned between the first end 40 and the central portion 44. The engagement surface of the rim 46 can have a generally concave shape for retaining the upper or lower rim cover beads 14, 16 in a desired position between the first end 40 and the central position 44 during operation. To later facilitate this retention, an elevated portion 57 adjacent to the central position 44 can be obtained to prevent the rim from being raised together with the lever.

The engagement surface of the rim 48 can subsequently have a first nick portion 52 disposed directly adjacent the distal end 54 of the second tool head 20 to be positively engaged with the rim enhancement of the rim 10 when the rim 18 is mounted on the rim. rim 12. A second nick section 56 will be disposed adjacent the center portion 44 to positively engage with the rim enhancement of the rim 10 by removing the rim 18 from the rim 12. Between the first and second portion of nick 52, 56, the gear surface of the rim 48 has a generally convex shape. In this way, the gear surfaces for the rim and for the rim 46, 48, including the first and second nick portion 52, 56, can operate to maintain the rim tire beads 14, 16 and rim enhancement. of the rim 10 in a desired relative position during the installation and removal of rim 18 from rim 12, will be explained in more detail below.

With reference to Figs. 5a and 5b, a third alternative head 58 described. This third head 58 can be used as part of the tool 1 in any desired combination with the first and second head of the tool 2, 20 to obtain a tool 1 with the desired physical characteristics. It can be noted that for convenience, the tool 1 can be provided with a single lever 4 and three or more removable heads 2, 20, 58 so that the user can mix and use the heads of the tool to obtain the tool that best fits to a particular size / shape of the rim or wheel. For this purpose, a removable joint, as shown in Fig. 7, can be provided to allow the user to easily assemble / disassemble the desired head of the tool to be used with the lever 4. Fig. 7 shows a connection with clips where the corresponding inner diameters 100, 200 are provided on the lever and head of the tool, and where a removable clip 300 can be inserted. Alternatively, the heads of the tool 2, 20, 58, 74 can be provided with individual or separate levers so that they can then be used independently of one another.

Referring again to Figs. 5a, b, the third head of the tool 58 may comprise the first and second end 60, 62 and a central portion 64. The first end 60 may comprise their respective gear surfaces for the rim and for the rim 66, 68. at least a portion of the gear surface of the rim 66 may be generally concave, while the gear surface of the rim 68 may be substantially planar. The gear surface of the rim 68 can subsequently comprise a rim gear groove 70 disposed adjacent the center portion 64. The rim gear surface 66 can subsequently comprise a raised portion 72 positioned adjacent the center portion 64 to retain the Tire cover heel 14, 16 during operation. The second end 62 of the third head of the tool 58 can be configured to mesh with the second end 50 of the lever in a manner similar to that described for the first and second tool heads 2, 20.

The third head of the tool 58 can be obtained particularly for use by disassembling a rim from its own rim substantially together with the flat shape of its first end 60, which allows it to be easily handled down between the rim 18 and the rim 12 and positioned under the lower part of the tire cover bead 16. It can easily be used to lift the lower part of the tire cover heel 16 over the rim flange of the tire 10). Due to the third head of the tool 58 it does not have a she or a hook geometry as at its first end 60 (see, eg, nick portions 36, 52 of the first and second tool heads 2, 20, respectively ), it is less easy to "hang" on the heel of the lower rim tire 16 or the rim rim of the lower rim when it is being driven down the tire rim of the lower rim 16.

Referring to Figs. 6a and 6b, an alternative head of the tool 74 is shown. The head of the tool 74 may be similar in all directions of the first and second head of the tool 2 of Figs. 3a and 3b, with the exception of the steel projecting members 76, 77 that can be provided in place of the roller members 37, 38. This simple arrangement can result in a simpler and more economical construction compared to the tool head 2, and may be arranged for use with rims made of resistant materials (eg, steel), where rim scrapes of the rim due to tool interaction is not a concern. These solid projection members 76, 77 can be formed integrally in the body of the tool head 74, or they can be separate pieces that are mechanically attached to the body. In one embodiment, projection members 76, 77 may be short segments of a steel pipe that are welded to the body of the tool head 74.

Referring again to Fig. 1, the lever 4 of the tool 1 may have a substantially U-shaped portion or other equivalent portion 5 to allow at least a portion to be received within the area of front or rear space 13 of the rim 12 when the tool 1 is raised to remove a rim 18 from the rim 12 (see also Fig. 14). This is of great advantage over the existing tools that have straight levers, since it combines the benefits of a long lever (thus providing an advantage in the mechanical increase over shorter levers) with an interference that is prevented or minimized between the lever and the rim of the rim when you are using the tool to remove a rim from your rim. In this way the head (s) of the tool can be rotated over a large arch with a substantially greater lever compared to the straight levers of today. Fig. 14 shows tool 1 in almost the entire rotation position (i.e., totally "raised"). As can be seen, the similar position 5 of the lever 4 is fully received within the area of space 13 of the wheel 12. This similar lever is of a different advantage when removing rims from the wheel in terms of utility or construction of vehicles such as backhoes, etc. .

In the illustrated example of Fig. 14, with a similar portion 5 is formed by dividing the lever 4 into four different portions 4a-d, each of which forms an angle with respect to an adjacent portion. This mode is merely an example, and others are also possible, such as providing a lever with a smooth "S" or "C" shape - in the curve. Subsequently, the lever of the tool 4 can be made for a particular application, in such a way that the degree of similarity is particularly towards the particular size and / or geometry of a rim. For example, it can be expected that lever 4 will be used when installing / uninstalling a large tire, where the size of the lever will be different from the one used to remove a smaller (super-simple) tire from a smaller truck. The important and consistent point of said levers 4 is that they will be sized so that at least a portion of the lever receives within the front or the rear of the spacing area 13 of the wheel 12 so a longer lever may be used by comparing with a current lever without interference as a result in the wheel.

Referring to Figs. 8-13, disassembling a rim 18 from its respective rim 12 using the first head of the tool 2 of Figs. 3a, b will be described in great detail. In the use of the first head of the tool 2 is oriented such that the distal strut 30 of the first end 22 points generally down towards the interface of the rim / wheel. The distal tip 30 is subsequently pressed to the junction between the rim 12 and the upper head 14 of the rim 18 to break the seal between the rim opening bead. (Alternatively, a tool for the opening bead to be broken separately can be used to initially break the seal between the rim and the rim.) The first head of tool 2 is then pressed down between the rim and the rim until the nick 36 makes contact with the upper 10 enhancement of the rim 12 (Fig. 9). Once the first head of the tool 2 is fully gripped with the rim and rim, as shown, the tool lever 4 can be raised in the direction of the arrow "A" to impart a force in the opening bead of the rim 14 (by means of the gear surface of the rim 6), and through the continuous application of force in the upper opening bead 14 where it slides upwardly of the upper ridge 10 enhancement, by releasing the bead of upper opening 14 of the rim of the rim 12 (Fig. 10). Once the upper opening bead 14 has been slid up and over the top 10, the lever 4 is rotated in the opposite direction (as shown in arrow "B" in Fig. 11) whereby the upper opening bead 14 slides on the bead section 32 and the distal tip 30 of the first end 22 is positioned under the second opening bead 16 (Fig. 12). Once the entire engagement surface of the rim 6 engages the lower opening bead 16, the handle 4 is raised again in the direction of the arrow "A" to impart an upward force on the lower opening bead 16 Note that during the steps of Figs. 10 and 13, the equivalent portion 5 of the lever of the tool 4 will reside at least partially within the area of space either in front or in the rear portion 13 of the wheel 12, as shown in Fig. 14. again, this substantially allows an increase in the rotation of the head of the tool 2, while also allowing the use of a longer lever which increases the force available to lift the rim 18 upwards on the rim 10 enhancement. Increased lifting can be very important to remove the tires of a very large vehicle, such as trucks and construction machinery.

Referring to Figs. 15-18, the rim placed loosely on the top of the rim of the rim 12 causes the opening bead of up to down 16 of the rim to be felt in the upper rim 10 of the rim 12. With the bead section 32 pointing up (away from the rim of the rim) and the first end 22 pointing towards the interface between the rim and the rim, the distal tip 30 is inserted between the rim 18 and the rim 12 far enough so that the portion concave 33 of the gear surface of the rim 8 meshes with the rim enhancement of the rim 10 (Fig. 15). It will be noted that up to this point, the tool 1 will also be positioned with respect to the rim of the rim 12 substantially as shown in Fig. 14, so that the equivalent portion 5 of the lever 4 resides at least partially within the area of space either on the front or on the back 13 (depending on the side on which the tire has been presented to the user). In this way, the concave portion 33 will be engaged with the rim enhancement of the rim 10 and with the engagement surface of the rim 6 which will make contact with the lower opening bead 16. Then, using the rim enhancement of the rim 10 as fulcrum or fulcrum, the lever 4 is lifted out of the area of space 13 in the direction of the arrow "B." While this is occurring, the gear surface of the rim 6 presses down on the lower opening bead to press it downwardly from the rim flange of the upper rim 10 (Fig. 16). Normally this operation can result in only a portion of the entire circumference of the lower opening bead of the rim 16 being pressed under the rim enhancement of the rim 10 (ie, the portion of the tire opening bead located below the surface). of gear wheel 6). In order to be able to press the entire circumference of the lower opening bead of the rim 16 down over the top rim of the rim 10, the tool 1 can be "walked" inside the rim of the rim - repeating the lifting process previously identified - so that in incremental mode the lower opening bead of the rim 16 is installed on the upper rim of the rim 10.

Once the lower opening bead 16 is fully installed, the rim 18 should "fall" into the rim of the rim 12 until the top opening bead 14 meshes with the top rim rim portion of the rim. high 10. The upper opening bead 14 will also fall on the upper part of the bead section 32 of the tool head 2 (Fig. 17). The lever 4 can then be raised towards the rim space 13 in the direction of the arrow "A" so that the upper opening bead 14 can slide on the bead section 32. This sliding operation could be facilitated if a roller 37 is located in the heel section 32. It will be appreciated that the sliding operation will be easier with the presence of a roller 37. Once the heel section 32 is positioned on the upper opening bead 14, the engaged portion of the rim 6 is again engaged with the upper opening bead 14. The lever 4 can then be raised in the direction of the arrow "B" to press the upper opening bead 14 downwards on the upper rim 10 of the rim 12 (Fig. 18). Again, during this operation the concave portion 33 of the first head of the tool 2 engages with the rim enhancement of the rim 10, acting as fulcrum or fulcrum to rotate the head of the tool 2. And with the installation of the lower opening bead 16, again the tool can be "walked" around the circumference of the rim of the rim 12 or incrementally pressing the top opening bead 14 on the rim enhancement of the rim 10.

Referring to Figs. 19-21, the process for removing a rim using the second head of the tool 20 will now be described in greater detail. (It is notable that the third head of tool 58 (Figs 5a, b) will be used to remove a rim 18 with a corresponding rim 12 substantially in the same manner as with the second head of the tool 20. To facilitate the description however, the reference in the following section will be made only referring to the second head of the tool 20).

The process for removing a tire proceeds substantially the same as that described in relation to the first head of the tool 2 in Figs. 8-13 previous. The second head of the tool 20 is oriented in such a way that the distal end 54 points generally towards the rim / rim interface. The second head of the tool 20 can then be operated between the rim enhancement of the rim 10 and the upper opening bead 14 until the second nick portion 56 of the head engages with the rim enhancement of the rim 10 ( Fig. 19). Instead the second head of the tool 20 is fully engaged with the rim and the rim the lever of the tool 4 can be raised in the direction of the arrow "A" to impart an upward force on the upper opening bead 14 ( by means of the gear surface of the rim 46), and through the continuous application of force the upper opening bead 14 slides up and over the upper rim 10 of rim 12, loosening from the top opening bead 14 of the rim of the rim 12 (Fig. 20). Once the upper opening bead 14 has been slid up and over the upper lug 10, the lever 4 can be rotated in the opposite direction and the distal end 54 of the tool head 20 is positioned under the second bead of the tool. opening 16 (Fig. 21). The lever 4 is then raised again in the direction of the arrow "A" to impart a force on the lower opening bead of the rim 16. It will be appreciated that during the passage of Fig. 20 the equivalent portion 5 of the lever the tool 4 will reside at least partially within the area of space either in the front or in the rear portion 13 of the rim of the rim 12, as shown in Fig. 14. Again, this substantially allows an increase in the rotation of the head of the tool 20, while also allowing the use of a longer lever which increases the force available to lift the rim 18 up on the rim 10 enhancement. This increase in the lift can be very important to remove the tires of a very large vehicle, such as trucks and construction machinery.

In one embodiment of the process for removing the rim, two or more heads of the tool 20 can be used at the same time to remove each cover bead 14, 16 from the rim 18. This can be an advantage because only a portion of the total the circumference of the top and bottom tire beads of the tire 14, 16 can be placed on the top rim of the rim 10 with each rotation (or "lift") of a single head of the tool 20. This can be particularly true when removing very large tires (eg tractor wheels) from the wheel. Therefore, when two tools are used at the same time to remove the top cover bead 14, both heads of the tool 20 can be placed in a space separate from the locations and carried down between the wheel and the rim until its respective second nick portion 56 are meshed with the rim enhancement of rim 10; the pair of heads of the tool 20 and then can be raised there was the other side simultaneously or in succession to place a larger portion of the circumference of the top cover bead 14 on the upper rim 10 enhancement. Accordingly, a of the heads of the tool 20 can be raised in place, while the other moves to a new area of the enhancement of the rim 10 and rises again to completely remove the circumference of the top cover bead 14 from the rim enhancement. the tire 10.

In another alternative embodiment, once the upper cover bead 14 is removed from the rim 10, the rim can be turned over and then a second head of the tool 20 (or a third head 58) can be inserted between the lower cover bead 16 and the top rim 10 on the other side of the rim. Again, the head of the tool 20, 58 can be brought in until it meshes with the indentation 70 (Fig. 5a) and meshes with the rim enhancement of the rim 10. A simple lifting movement can be used to remove the lower cover bead 16 of the upper rim 10 enhancer. This lifting movement can subsequently facilitate the operation by turning the rim to its original position while the tool head 20, 58 meshes with the rim and with the rim and "Boot" the lowest deck heel 16 of the rim rim 10.

Referring to Figs. 22 and 23, of the process of installing the rim using a second head of the tool 20 will now be described in great detail. This process is substantially similar to the installation process using the first head of the tool 2. Initially, the rim 18 is first placed loosely on the top side of the rim 12 so that the lower cover bead 16 of the rim sits on the top rim 10 of the rim 12. With the distal end 54 of the second tool head 20 pointing towards the rim / rim interface, the lever is used to drive the head of the tool towards down at the interface. The second head of the tool 30 is inserted just far enough so that the first portion of the nip 52 of the gear surface of the rim 48 engages the rim enhancement of the rim 10 (Fig. 22). Therefore, using the rim enhancement of the rim 10 as a fulcrum or fulcrum, the lever 4 is raised in the direction of the arrow "A," by pressing the gear surface of the rim 46 downwardly on the bead of the rim. lower cover 16 for pressing down on the upper rim rim 10. Since this happens, as noted above, this operation could result in only a portion of the entire circumference of the lower tire bead of the rim 16 being pressed down on the rim enhancement of the rim 10, the tool 1 can be "walked around" the interior of the rim of the rim - repeating the lifting process - to incrementally install the lower part of the cover heel 16 on the top rim of the rim 10.

Once the cover bead 16 is fully installed, the rim 18"will fall" into the rim of the rim 12 until the top cover bead 14 meshes with the top rim of the rim 12. The second head of the tool 20 can be readjusted in such a way that the first nick portion 52 engages again with the upper rim 10 (Fig. 23), where the lever 4 can be raised again in the direction of the "B" arrow to press the top cover bead 14 down on the upper ridge 10 enhancement of rim 12 (Fig. 23). And that with the installation of the lower cover bead 16, the head of the tool 20 can be "walked" again around the circumference of the rim of the rim 12 to increase the pressure on the top cover bead 14 on the enhancement of the rim of the tire 10.

As part of any or all of the aforementioned facilities and / or steps to remove a tire, an appropriate oil or other lubricant must be applied to the surface of the tire immediately adjacent to the tire beads to reduce friction between tires. top and bottom cover heels 14, 16 the top elevation 10 of the rim 12 and the respective tool head.

Tool 1 is particularly designed to remove wide tires from modern trucks, such as the simple ones that are currently used and which are designed to take the place of two standard tires (eg the X One XTE tire from Michelin). Tires of this size can have twice the depth of regular tires (see dimension "D" in Fig. 3). The present tool 1 has an equivalent lever 4 that can be configured to minimize the interference between the lever and the rim of the rim 12, and in this way achieve a more simple handling of the rim with respect to the rim of the rim by comparing this tool with which currently only have a bar without any curve.

The tool 1 advantageously also allows the user to change a tire when it is still mounted on the vehicle. This is a desirable feature, particularly when using the tool to change tires on construction vehicles, because changing a tire and removing the wheel from the vehicle can be time-consuming and can be quite a complicated operation. In such applications, the tool 1 can be used in conjunction with a tool that stops the cover bead as described in the Eü patent. No. 6,269, 861 of Loi Van Tran, entitled "Tool for installing and removing tires." The tool to hold the cover bead can be used to maintain the relative positions between the tire bead cover and the rim on one side of the rim while one of the heads of the tool 1 is inserted simultaneously. the rim tire heel and the rim rim on the opposite side of the rim and place the tire bead over the rim of the rim. This is of great help in very cold weather conditions or with snow, where the tire rubber may be less flexible, and where the possibility of danger of the operator slipping on the slippery floor due to snow increases.

Therefore, it should be understood that the embodiments described herein are merely illustrative in accordance with the principles of the invention. Many other modifications can be made by those who know the art that contains the principles of the invention and that have the interest, spirit and possibilities to do so.

Claims (25)

1. A tool for rims comprises: A tool head and a lever, said tool has a rim gear surface and a rim gear surface, the head of the tool has been connected to the first rim lever; Where the lever has a substantially U-shaped portion positioned adjacent to the head of the tool; said substantially U-shaped portion configured with the same size to be received within the space formed between the first and second diametrically opposed surface of the rim of the rim and the rim gear surface is gripped with the rim of the rim.

2. The rim tool of claim 1, wherein at least a portion of the rim gear surface is concave and the rim gear surface comprises a lip for joining the rim rim portion of the rim.

3. The rim tool of claim 2, wherein the rim gear surface subsequently comprises a roll-shaped member having an axle pin oriented substantially perpendicular to a longitudinal axis of the rim tool.

4. The rim tool of claim 3, wherein the roller member comprises a rubber or polymer material.

5. The rim tool of claim 2, wherein the rim gear surface comprises a protrusion configured to maintain the rim opening bead positioned in the concave portion of the rim gear surface during operation.

6. The rim tool of claim 4, wherein said protrusion comprises a roll-shaped member having an axle pin oriented substantially perpendicular to a longitudinal axis of said rim tool.

7. The rim tool of claim 1, subsequently comprises a second tool head connected to the lever at the second end of the lever, the second tool head has a rim gear surface and a rim gear surface , at least a portion of the rim gear surface is concave, and the rim gear surface comprises a rest to receive the rim rim portion of the rim.

8. The rim tool of claim 1, wherein said substantially U-shaped portion of the lever comprises: (i) a first segment of the lever having a first axis oriented toward a first angle with respect to the longitudinal axis of the tool for rim, and (ii) a second segment of the lever with a second axis oriented toward a second angle with respect to the longitudinal axis of the rim tool; where the first and second angles are oblique angles.

9. The rim tool of claim 1, wherein the substantially ü-shaped portion of the handle comprises: (i) a first segment with a first and a second end, the first end associated with the head of the tool, and the second end end being laterally equivalent of a longitudinal axis and the rim tool in the first instance, and (ii) a second end of the lever with a third and a fourth end, the third end associated with the second end of the first segment of the lever, and the fourth end being laterally equivalent to the longitudinal axis by a second distance, this second distance being less than the first distance.

10. The rim tool of claim 1, wherein the head of the tool is removable from its union with the lever.

11. A rim tool comprising: A member of the lever connected between the first and the Second locking end, each working end has a rim gear surface and a rim gear surface, the lever member generally defines a longitudinal axis between the first and second end of work; where a first leg projects laterally relative to the longitudinal axis and comprises the first and second segment of the leg, the first segment of the leg is connected to the first working end of the rim tool, and the second segment of the leg is spaced to a first lateral distance from the longitudinal axis; Where a second leg projects laterally relative to the longitudinal axis and comprises the third and fourth segment of the leg, the third segment of the leg is connected to the second segment of the first leg projected laterally and the fourth segment is connected to the second working end of the leg. the rim tool, the third segment is spaced at a second lateral distance from said longitudinal axis; wherein when the rim gear surface and the rim gear surface of the first working end are gripped with the rim of the rim and with the rim, respectively, said handle member is movable in a first direction to move the rim. rim with respect to the rim of the rim; and the second and third segment are received within the cavity formed an enhancement with an upper portion of the rim of the rim.

12. The rim tool of claim 11, wherein when the rim gear surface and rim gear surface of the first working end are gripped with the wheel rim and the rim, respectively, said rim member. the handle is movable in a second direction to move the rim with respect to the rim of the rim; and the second and third leg are received within the cavity formed an enhancement with an upper portion of the rim of the rim.

13. The rim tool of claim 12, wherein the rim gear surface of the first working end comprises a roller to be able to grip the rim of the rim, this roller has an axle-like clasp oriented substantially perpendicular to the longitudinal rim tool. .

14. The rim tool of claim 13, wherein the roller is made of rubber or some polymer material.

15. The rim tool of claim 11, wherein the rim gear surface of the first work end comprises a lip for engaging the top rim portion of the rim.

16. The rim tool of claim 15, wherein the lip has a radius of a certain size to fit with the upper portion of the rim to minimize movement between the rim gear surface and the rim of the rim in a direction substantially parallel to the axle longitudinal of the rim tool.

17. The rim tool of claim 11, wherein the lever member comprises a side arc that diverges from the longitudinal axis adjacent to one of the first or second working end.

18. The rim tool of claim 17, wherein the lateral arc positions the first and second working ends substantially on the longitudinal axis.

19. The method to move a tire with respect to its own wheel includes: Provide a rim tool that has a head and a lever, where the head of the tool has a rim gear surface and a rim gear surface, this head is connected to a first end of the lever, and the lever it has a substantially ü-shaped portion positioned adjacent to the head of the tool; positioned between a rim rim flange and rim rim flange then the rim gear surface contacts the rim flange and the rim gear surface contacting rim rim flange; and moving the lever in a first direction to apply a force to the cover bead to move said cover bead with respect to the rim enhancement of the rim; wherein the movement step comprises receiving said substantially ü-shaped portion of the lever within a space defined by the first and second diametrically opposed surface of the rim rim enhancement.

20. The method of claim 19, wherein the rim gear surface has a concave shape for receiving the rim tire bead and the rim gear surface comprises a rim to receive the rim rim.

21. The method of claim 20, wherein the rim gear surface comprises a roller with an axis oriented substantially perpendicular to a longitudinal axis of the rim tool, the roller being made of a non-metallic material.

22. The method of claim 21, comprises a second head connected to a second end of the lever, the second head of the tool has a gear surface for the rim and a gear surface for the wheel, the gear surface with the rim It comprises a convex surface and the gear surface with the rim comprises a nib to receive a portion of the rim rim enhancement.

23. The method of claim 22, wherein at least one of the first or second head is removable and can be attached to the lever.

24. The method of claim 19, wherein the movement step comprises imparting a force that removes the rim, this force has a component substantially parallel to the axis of the rim.

25. The method of claim 19, wherein the movement step comprises imparting an installation force on the rim, this installation force having a component substantially parallel to the axis of the rim. SUMMARY A tool is provided to help when mounting or dismounting a tire in its own wheel. The tool may be provided with a lever having a head disposed at each end. Each of the tool heads is designed to fit between the tire's bead cover and its corresponding rim so that in a manner in which the lever is lifted, a force is applied to the rim's tire bead and to the Rin so that you can move the tire's tire bead over the wheel. Each head of the tool has a substantially flat portion which can easily fit between the surfaces of the rim and the rim. One of the heads of the tool has a tip slightly bent in a hook so that it can be gripped axially with a rim rim and then it can be used for both purposes, that of mounting the rim on the rim and the rim. to disassemble it from this one. Another of the heads of the tool has a protruding part arranged near the midpoint of the tool to be fitted with a rim enhancement of the rim. The protruding part may be a member such as a roller having a pin as an axis perpendicular to an axis of the tool lever. This roller can be made of a soft polymer or a rubber material so that the tool does not damage the rims of the rim made of a softer metal such as aluminum. The lever may have a pronounced curvature which allows a portion of the body of the lever to be received within the cavity formed by the rim of the rim. This curvature allows a greater range of lever movement, and thus can give the user an improvement in elevation compared to current tools. The tool heads may be permanently attached to the lever, or may be removable to allow the user to dispose the tool with the desirable head for its own application.