BI-AXIAL BALL TIP FOR USE WITH A MOBILITY CANE

Abstract

A bi-axial ball tip for use with a mobility cane. The bi-axial ball tip includes an omni ball, at least two mirrored brackets, and a grip. The mirrored brackets form a chamber to accommodate part of the omni ball, allowing the omni ball to rotate around a horizontal axis inside the chamber. The rotation of the omni ball when the ball engages a ground surface and is provided to aid visually impaired people. The grip connects the mirrored brackets in a manner such that the mirrored brackets and the omni ball, together, rotate around a vertical axis which is orthogonal to the horizontal axis.

Claims

1. A mobility cane comprising: a bi-axial ball tip for engagement with the mobility cane, said bi-axial comprising: an omni ball; at least two mirrored brackets; and a grip; wherein the mirrored brackets form a chamber to accommodate part of the omni ball, allowing the omni ball to rotate around a horizontal axis inside the chamber; and wherein the grip connects the mirrored brackets in a manner that the mirrored brackets and the omni ball together rotate around a vertical axis which is orthogonal to the horizontal axis.

2. The mobility cane of claim 1, wherein each of the mirrored brackets has an upper part and a bottom part; wherein when the the upper parts of the mirrored brackets are matched together, they form a tube; and wherein the bottom parts of the mirrored brackets have arcuate surfaces which form the chamber to partially accommodate the omni ball rotating inside.

3. The mobility cane of claim 1, wherein a bolt is screwed from outside through the bottom part of each of the mirrored brackets, is threaded through a bearing; and then threaded into a tube axle.

4. The mobility cane of claim 2, wherein a vertical axle is placed within the formed tube.

5. The mobility cane of claim 4, wherein the vertical axle is place in the upper parts of the mirrored brackets; and wherein the vertical axle is inserted into an aperture defined in a top of a bearing and a bolt is threaded through the aperture defined in the bearing and into a bottom of the vertical axle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will refer to several drawings as follows.

[0018] FIG. 1a is a three-dimensional view of the ball tip embodying the invention;

[0019] FIG. 1b is a three-dimensional view of the mobility cane with the ball tip embodying the invention;

[0020] FIG. 2a is a front view of the ball tip embodying the invention;

[0021] FIG. 2b is a front view of the mobility cane with the ball tip embodying the invention;

[0022] FIG. 3a is a side view of the ball tip embodying the invention;

[0023] FIG. 3b is a side view of the mobility cane with the ball tip embodying the invention;

[0024] FIG. 4a is a front cross-sectional view of the ball tip embodying the invention;

[0025] FIG. 4b is a front cross-sectional view of the ball tip embodying the invention engaging with a mobility cane stick;

[0026] FIG. 5 is a top view of the ball tip embodying the invention;

[0027] FIG. 6a is a three-dimensional exploded view of the ball tip embodying the invention;

[0028] FIG. 6b is a three-dimensional exploded view of the ball tip embodying the invention engaging with a mobility cane stick; and

[0029] FIG. 7 is a schematic view of the mobility cane with the ball tip in use according to a preferred embodiment of present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0030] The following detailed description of the invention refers to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the following description to refer to the same and like parts. Dimensions of certain parts shown in the drawings may have been modified and/or exaggerated for the purposes of clarity or illustration.

[0031] Referring to FIG. 1a, it is a three-dimensional view of the ball tip embodying the invention. It illustrates a bi-axial ball tip 10 for use with a mobility cane. The bi-axial ball tip 10 includes an omni ball 12, mirrored brackets 14 and a grip 16. Preferably, in some embodiments of the present invention, a compression bracket top 18 is on the top of the grip 16 as shown in FIG. 1a. FIG. 1b shows the mobility cane working with the ball tip of the present invention.

[0032] Referring to FIGS. 6a and 6b, the exploded views of the ball tip, the bottom parts of the mirrored brackets 14 accommodate the omni ball 12 partially in the chamber screwing bolts 26 through the holes on the mirrored brackets 14, bearings 22 and then threaded into a tube axle 28 which is placed within the omni ball 12 so that the omni ball 12 is fixed in the chamber by the mirrored brackets 14 as shown in FIGS. 4a and 4b.

[0033] Referring to FIG. 1a, the bottom arrow shows the omni ball 12 itself can rotate around a horizontal axis inside the chamber formed by the mirrored brackets 14. Meanwhile, the top arrow shows the mirrored brackets 14 and the omni ball 12 together can rotate around a vertical axis which is orthogonal to the horizontal axis.

[0034] Referring to FIGS. 4a and 4b, in some embodiments, the horizontal axis is defined by the tube axle 28 or the two central points of heads of the bolts 26. The vertical axis is defined along a mobility cane stick 40. As a result, the bi-axial ball tip 10 can rotate around to rotate in any direction without being lifted off the ground. It enables better contact with the surface and reduces catching and bending of the cane tip and cane.

[0035] FIG. 6a is the three-dimensional schematic exploded view of the ball tip embodying the invention. As shown in FIG. 4a, a bi-axial ball tip 10 for use with a mobility cane includes an omni ball 12, two mirrored brackets 14 which are a left bracket 142 and a right bracket 144, a grip 16, a bracket top 18 and inside components, which comprise a vertical axle 20, bearings 22, an olive 24, bolts 202, 26, and tube axle 28. The specific connection of those components will now be described in more detail.

[0036] As shown in FIG. 6a, the mirrored brackets 14 are split away along the horizontal axis in the exploded view. Each of the mirrored brackets 14 has two parts. The upper parts of the mirrored brackets 14 have arcuate surfaces, which form a tube when they are matched together. Within the formed tube, the vertical axle 20 is inserted into the holes in the bearings 22 from the top and the bolt 202 is threaded into the vertical axle 20 from the bottom. In a preferred embodiment, the diameter of the head of the bolt 202 is bigger than the hole in the bearing 22 so that the vertical axle 20 is fixed in the place.

[0037] The bottom parts of the mirrored brackets 14, including the left bracket 142 and the right bracket 144, also have arcuate surfaces which form a chamber accommodate the omni ball 12 rotating inside. One bolt 26 is screwed from outside through the bottom part of the left mirrored bracket 142 or the right mirrored bracket 144 and a bearing 22, which in a preferred embodiment is made of nylon, then threaded into the tube axle 28. The omni ball 12 is therefore included in the chamber formed by the mirrored brackets 14. As a result, mirrored brackets 14 form an integrity unit with the tube on the top and the chamber on the bottom when they are clamped together as shown in FIGS. 1a, 2a,-3a, 4a and 5. The bolt 26 in a preferred embodiment is a 24 mm M8 Nylon Phillips head screw.

[0038] Referring to FIG. 6a, the top of the axle 20 is at the bottom of the grip 16. In a preferred embodiment, the ergonomic grip 16 is twisted and fastened to the inner thread of the mirrored brackets 14 when they are screwed together as an integrity unit as shown in FIGS. 1a, 2a, 3a, 4a and 5.

[0039] In another preferred embodiment, the tube axle 28 and the vertical axle 20 are made of aluminium with inner threads which are matched with the threads on the bolts 202 and 26. It should be noted that the inner threads or threads on the bolts are not shown in the Figures which does not affect the protection scope of the present invention.

[0040] In another preferred embodiment, the grip 16 has and injection moulded thread section on the top as shown in FIG. 6a. A nylon universal compression olive 24 is placed between the grip 16 and the bracket top 18, the inner side of which has matching threads to the threads on the grip 16. The bi-axial ball tip 10 is attached to a mobility cane stick 40 by simply inserting the mobility cane stick 40 into the top hole of the bracket top 18 as shown in FIGS. 4b and 6b. The mobility cane stick 40 is changeable for different purposes or different users.

[0041] The bi-axial ball tip 10 provided by the present invention may be used at a natural angle from the user's hand to the ground. It should be noted that, in an embodiment of the present invention, the bi-axial ball tip 10 can be inclined to the ground, between 0-60 or 90-30 degrees.

[0042] When the described components are assembled, the omni ball 12 itself can roll on the ground around a horizontal axis, which is controlled by and can move laterally to the motion of the user. Meanwhile the omni ball 12 and the mirrored brackets 14 together can also rotate around a vertical axis that is orthogonal to the horizontal axis, which is also controlled by enables the user to change directions or turn around. As a result, the bi-axial ball tip 10 can move around, at the same time, rotate forwards or backwards in any direction without being lifted off of the ground, but just moving on the ground, as shown in FIG. 7, being a schematic view of the bi-axial ball tip 10 in use. It assists people with vision impairment for variable tracking paths. It creates more flexibility and consequently makes it easier to use.

[0043] Moreover, an important feature of the present invention that by rotating on the ground instead of dragging across it, the present invention provides a low wear and long-life ball tip use for mobility canes.

[0044] It should be also noted that the bi-axial ball tip provided by the present invention is adaptable to fit most existing mobility canes.

[0045] The reader will now appreciate the present invention which provides a bi-axial ball tip for use with a mobility cane which is easier to use than present solutions and that results in less wear and tear on the ball tip.

LIST OF COMPONENTS

[0046] The drawings include the following integers. [0047] 10 a cane tip [0048] 12 an omni ball [0049] 14 mirrored brackets [0050] 142 left bracket [0051] 144 right bracket [0052] 16 grip [0053] 18 bracket top [0054] 20 vertical axle [0055] 202 a bolt 202 [0056] 22 bearings [0057] 24 olive [0058] 26 bolts [0059] 28 tube axle [0060] 40 cane stick

[0061] Further advantages and improvements may very well be made to the present invention without deviating from its scope. Although the invention has been shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices and apparatus. Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of the common general knowledge in this field.

[0062] In the present specification and claims (if any), the word “comprising” and its derivatives including “comprises” and “comprise” include each of the stated integers but does not exclude the inclusion of one or more further integers.