1. Technical Field
The present invention relates to devices for use when removing wheels from a motor vehicle, and more particularly to devices for removing a wheel from a truck.
2. Related Art
It is often necessary to remove wheels from trucks during repair or maintenance. For example, wheels routinely are removed to change a tire or to gain access to the brakes that are located behind the wheels. Unfortunately, the wheel removal process can be difficult for a variety of reasons.
First, the wheels, and the inner wheel in particular, fit tightly onto the wheel hub that sits on the end of the axle. Because the tolerance between the circumference of the wheel rim and the wheel hub is very small and the weight of the truck is supported by the wheel hub, wheels have a tendency to become stuck or seized on the hub. This may occur for any type of wheel, including inner wheels, outer wheels, stud-piloted wheels, hub-mounted wheels and the like.
During a typical wheel removal process, the mechanic will remove the lug nuts securing the wheel to the truck (usually with an impact wrench) and remove the wheel by hand. Once seized to the hub, wheels are very difficult—if not impossible—to remove by hand. Instead, mechanics typically bang on the stuck wheel with a sledgehammer until the wheel comes loose. This process is problematic for several reasons. There is little space between the inner and outer wheels and between the wheels and the other components of the truck. Because of these limitations and because the mechanic may need to swing the sledgehammer at awkward angles, the risk of injury to the mechanic is ever present. Damage to the wheel or other parts of the truck also is a concern, especially for aluminum rimmed tires. In addition, it often takes many swings to dislodge a seized wheel—each swing poses an independent risk to the mechanic, the wheel and the rest of the truck.
Furthermore, this method for removing the seized wheel is frequently unsuccessful, even after an extended period of hammering on the seized wheel. In such a case, it is necessary to remove from the axle the wheel hub and wheel together, and then attempt to separate the hub and wheel when the wheel is off of the truck. This creates significant extra work for the mechanic, who must subsequently replace the hub on the axle.
While there are a number of devices which can be used to pull wheels or other devices from an axle, they suffer from various problems. For example, most devices use the hub itself for leverage and push off the hub. However, hub shapes are not universal, making it difficult to use these devices on all wheels. Moreover, the forces generated during the removal process can damage the hub. Other devices use hydraulic mechanisms to remove the wheel. Because these forces can be substantial, the wheel and removal device itself may literally be shot across the garage, posing an even greater risk of injury to the mechanic, the wheel, and the truck than the sledgehammer.
Accordingly, a need has long existed for improved devices and methods for removing a wheel.
Improved wheel removal tools may include a frame, one or more removal members movably coupled to the frame and one or more connection members coupled to a respective removal member. In operation, the frame may be attached to the wheel, such as at one or more wheel studs or bolts, and the connection members may be attached to the wheel, such as by engaging apertures in the wheel. The base may be configured to leverage the wheel studs—rather than the axle hub—during the wheel removal process. Once engaged with the wheel, the removal members may be moved away from the wheel by an operator so that the connection members pull the wheel to dislodge the seized wheel from the vehicle.
Other systems, methods, features and technical advantages of the invention will be, or will become apparent to one with skill in the art, upon examination of the figures and detailed description. It is intended that all such additional systems, methods, features and technical advantages be included within this summary and be protected by the claims.
The invention can be better understood with reference to the following drawings and description. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
The elements illustrated in the figures interoperate as explained in more detail below. Before setting forth the detailed explanation, however, it is noted that all of the discussion below, regardless of the particular implementation being described, is exemplary in nature, rather than limiting.
1.0 Wheel Removal Tool Overview
Referring to the drawings, and initially to
The various components of the wheel removal tool 10 may be made of any suitably hard material, such as metals like iron, steel or the like. Other materials also may be used. In some embodiments, each component is made of the same material. Alternatively or additionally, one or more of the components of the wheel removal tool 10 may be made of different material than others of the components.
2.0 Exemplary Frames 20
Referring also to
2.1 Exemplary Frame Bases 21
In some embodiments, the base 21 may be substantially ring shaped and include an inner diameter adapted to fit around the hub of a vehicle wheel. For example, the inner diameter of the base 21 may be between about 1/16 of an inch and about 1 and ½ inches larger than the wheel hub diameter, preferably between about ⅛ of an inch and about ¾ of an inch larger than the wheel hub diameter, and even more preferably between about ¼ of an inch and about ½ of an inch larger than the wheel hub diameter. Other shapes and sizes also may be used.
By fitting around the wheel hub, the wheel removal device 10 is able to reduce and/or eliminate problems caused by variations in wheel hubs. In addition, the wheel removal device 10 also is able to reduce and/or eliminate damage to the wheel hub that may be caused by devices that push off or otherwise leverage the wheel hub to generate a force to remove a seized wheel. In turn, the unique design of the wheel removal device 10 also may improve the useful life of the wheel hub.
The outer diameter of the base 21 may be dimensioned to fit within the wheel frame. For example, the outer diameter of the base 21 may be between about 11 inches and about 16 inches, preferably between about 12 inches and about 15 inches, even more preferably between about 13 inches and about 14 inches. In one embodiment, the outer diameter of the base is about 13 and ⅞ inches. Other shapes and sizes also may be used.
2.2 Exemplary Recessed Portions 24a and 24b and Apertures 22a and 22b
The base 21 also may include one or more recessed portions 24a and 24b that include apertures 22a and 22b for receiving bolts from a wheel to be removed. The recessed portions 24a and 24b and the apertures 22a and 22b may be positioned so as to receive at least two studs from the wheel to be removed, such as on opposite sides of the base 21 for receiving studs from a wheel having an even number of studs. Alternatively, or additionally, the recessed portions 24a and 24b and apertures 22a and 22b may be positioned to receive studs from a wheel having an odd number of studs. In some embodiments, one or more of the recessed portions 24a and 24b may include multiple apertures 22a and 22b for receiving studs from wheels having either an odd or even number of studs. The apertures 22a and 22b may be dimensioned for receiving studs from the wheel. For example, the apertures 22a and 22b may have diameters of between about 1 inch and about 1 and ½ inches and preferably about 1 and ¼ inches. Other sizes also may be used.
The recessed portions 24a and 24b may be recessed between about ⅞ of an inch and about 1 and ⅛ inches from the rest of the base 21, preferably between about 15/16 of an inch and about 1 and 1/16 inches from the rest of base 21 and even more preferably about 1 inch from the rest of the base 21. Other depths also may be used.
In operation, the base may be positioned on the wheel so that studs or bolts protrude through the apertures 22a and 22b and the mechanic may secure lug nuts to the bolts (such as by hand or other methods) to secure the device 10 in position. As forces are exerted on the wheel via the one or more removal members 30a and 30b, the underside of the base 21 pushes off the uncapped bolts instead of the hub. In this manner, the wheel removal device 10 is able to reduce and/or eliminate damage to the wheel hub and other problems caused by variations in wheel hubs. In addition, the wheel removal device 10 also is able to distribute the removal forces across the bolts, reducing and/or eliminating the possibility of damage to any individual bolt. Moreover, because bolts are less costly and easier to replace than a wheel hub, the unique design of the wheel removal device 10 also may decrease maintenance costs.
2.2 Exemplary Support Arms 28a and 28b
The support arms 28a and 28b may be coupled to base 21 and the one or more collars 29a and 29b, such as, for example, by a welded connection. Alternatively, or additionally, some or all of the base 21, the handle 26, the one or more support arms 28a and 28b and the one or more collars 29a and 29b may be cast as a single unit. The support arms 28a and 28b may operate to space the collars 29a and 29b away from the base 21 to increase the accessibility of the nuts 36a. In some embodiments and as shown in the illustrated embodiments, the support arms 28a and 28b may include apertures to reduce the weight of the device 10.
The support arms 28a and 28b may extend outward from the base 21 between about 6 and ½ inches and about 30 inches, preferably between about 10 inches and about 20 inches from the rest of base 21 and even more preferably about 15 inches and about 20 inches from the rest of the base 21. In one embodiment, the support arms 28a and 28b extend about 17 and ¼ inches from the base 21. Other sizes also may be used.
2.2 Exemplary Collars 29a and 29b
The one or more collars 29a and 29b may be coupled to the main support arms 28a and 28b. The one or more collars 29a and 29b each may be substantially hollow cylinders and may receive a respective removal member 30a and 30b. As such, the collars 29a and 29b may provide a path through which the removal member may pass. The collars 29a and 29b may be sufficiently long to provide a stable support for the removal member(s) 30a and 30b. For example, the collars may be between about ½ of an inch and about 1 and ½ inches long, preferably between about ¾ of an inch and about 1 and ¼ inches long, and even more preferably about 1 inch long.
In some embodiments, the frame 20 may include one or more extension arms attached to the support arms 28a and 28b and the one or more collars 29a and 29b so that the collars 29a and 29b may be positioned further radially outward from the rest of the frame 20.
3.0 Exemplary Removal Members 30a and 30b
The removal member 30a also may include a lower portion 32a having a keyhole aperture including a narrow portion 31a and a wide portion 33a. Referring also to
Removal member 30b may operate similarly.
4.0 Exemplary Wheel Connection Members 40a and 40b
Referring again to
5.0 Exemplary Method for Removing A Wheel
Referring to
Next, the removal members 30a and 30b may be attached to the wheel by the operator, as shown in
The nuts 36a and 36b may be turned by hand, or a tool such as an impact wrench may be used to apply larger forces to the nuts 36a and 36b. Because the tool 10 is secured to the studs, it operates as a backstop that prevents the wheel 200 from flying off the hub, even when significant forces are applied to dislodge the wheel. Finally, after the wheel 200 has been dislodged from the hub 230, the operator may decouple the connection members 40a and 40b from the wheel and remove any lug nuts from the wheel bolts 210a to decouple the device 10 from the wheel 200.
While various embodiments of the invention have been described, it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the invention. Accordingly, the invention is not to be restricted except in light of the attached claims and their equivalents.
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