TECHNICAL FIELD
The disclosure is in the field of mobility devices, and in particular embodiments, relates to a walking cane.
BACKGROUND
Innumerable varieties of walking canes have been described in the prior art. Known canes range in design from simple walking sticks to more complex collapsible or designs. Recently, a number of folding canes have been introduced. It can be challenging to prepare a folding cane that will have a reliable folding mechanism that can support the user reliably when in the unfolded position and that is easy to fold into a folded position. A folding cane must be sturdy, and, because the cane is intended for use by elderly or infirm users, a walking cane desirably should be sturdy when assembled, should not be subject to wobbling, and should not exhibit much give or “play” when assembled. Desirably, a walking cane should have an ergonomically acceptable handle, and, in particularly desirable embodiments, a cane should be self-supporting such that the cane will remain upright when rested on a level surface. In this latter regard, while a number of mechanisms are known for making a walking cane self-supporting, it is believed that some prior mechanisms can slightly impede the user's natural walking motion when in use.
It has now been found that a hinged cane may comprise an upper section and a lower section and a hinged mechanism connecting the upper and lower sections. The hinged mechanism may comprise a lower block disposed within an upper region of the lower section, and an upper block disposed within a lower region of the upper section, and a hinged coupler that is pivotally connected to each of the lower block and the upper block. This structure enables the lower section to be moved from a use position wherein the lower section is axially aligned relative to the upper section over a range of travel into a folded position. Either the lower block or the upper block is retractable within its respective upper or lower section, such that, when the lower and upper sections are axially aligned, the lower block may be moved relatively towards the upper block as this block retracts. The cane includes a catch mechanism that releasably secures the upper section to the lower section once the upper and lower section have been moved into the fully locked use position. Preferably, the device has several other features, as detailed hereinbelow.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front elevational view of a walking cane in accordance with one embodiment of the disclosure illustrating the cane in the use position.
FIG. 2 is a front elevational view of the walking cane shown in FIG. 1, showing the cane in the use position.
FIG. 3 is a first side elevational view of the cane when in the use position as depicted in FIG. 2.
FIG. 4 is a front elevational view of the walking cane depicted in the previous figures, showing the cane in a folded storage position.
FIG. 5 is an enlarged cross-sectional view taken in the area of the hinge mechanism of the illustrated cane, shown when the cane is in the folded storage position.
FIG. 6 is a top plan view of the cane when in the position shown in FIG. 6.
FIG. 7 is a cross-sectional view of taken in the area of the hinge mechanism as in FIG. 5, but shown when the cane is in the process of unfolding the cane.
FIG. 8 is a side elevational view of a portion of the cane when in the position shown in FIG. 7.
FIG. 9 is a cross-sectional view of taken in the area of the hinge mechanism as in FIGS. 5 and 7, but shown when the cane is in the use position.
FIG. 10 is a side elevational view of a portion of the cane as shown in FIG. 9.
FIG. 11 is a cross-sectional view of the tubular structure that makes up the lower section of the illustrated cane.
FIG. 12 is a cross-sectional view of portions of the upper and lower sections of the cane when in the folded position.
FIG. 13 is a perspective view of the user gripping handle of the cane.
FIG. 14 is a top plan view of the user gripping handle depicted in FIG. 13.
FIG. 15 is an exploded view, taken in perspective, of the lower section and the foot of the illustrated cane.
FIG. 16 is a perspective view of the foot illustrated in FIG. 15.
FIG. 17 is a bottom plan view of the foot illustrated in FIGS. 15 and 16.
DETAILED DESCRIPTION
With reference to FIGS. 1-3, the cane 25 includes an upper section 26, a lower section 27, and, as illustrated, an optional intermediate section 28 (visible especially in FIGS. 2 and 3). The intermediate section 28 is axially retractable within the upper section 26. As per conventional such canes, the intermediate section 28 includes a spring-loaded button 30 for engagement with a plurality of holes 31 in the upper section 26 to enable adjustment of the height of the cane. The intermediate section is captured within the lower section by retaining collar 32, as is conventional. In practice, the parts may be reversed such that the intermediate section is disposed instead within the lower section. FIGS. 1-3 further illustrate the handle 35 which is disposed at the uppermost part of the upper section 26, and a foot 36, which is disposed at the lowermost part of the lower section 22.
As seen in FIGS. 4 and 5, the cane may be folded about a hinge mechanism 40 which is desirable for storage or retail display of the cane 25. With reference to FIG. 5, the illustrated hinge mechanism 40 comprises an upper block 41 and a lower block 42, and a hinge coupler 43 with pivot pins 44, 45 that allow for pivoting of the upper and lower sections 26, 27, respectively. The lower block 42 is movable over an axial range of travel within the lower section 27 which is tubular at least in its upper region and which may be tubular throughout. A pin 48 coupled to the lower section 27 and slot 49 in the lower block 42 define a range of travel for the lower block 42. As seen in FIG. 5, the upper block 41 includes a spring-loaded catch button 50 which is biased by a spring 51 that is secured by a retention plate 53 and screw 54. The hinge mechanism further includes a magnet 55 disposed within or as the terminal surface of the upper block 41 and a corresponding opposing magnet 56 disposed in or as the terminal surface of the lower block 42. In practice, the positions of these may be reversed, and one of the magnets may be replaced by a block of metal. Also shown in FIG. 5 is a bushing 57 that assists in securing the upper section 26 to the collar 32.
When it is desired to move the cane from a folded position to a use position, the lower section is pivoted relative to the upper section to bring the upper section and lower section into axial alignment, as seen in FIGS. 7 and 8. When moved into this position, the magnets or magnets and metal surface, will engage one another to cause a positive “click” to tactically or audibly alert the user that the upper and lower blocks are in alignment. At this point, the user axially moves the upper section relative to the lower section until the catch button 50 engages opening 58 in the lower section 27, as seen in FIGS. 8, 9 and 10. The catch button 50 may have a beveled edge 60 to enable the user more easily to slide the lower section over the catch button 50. As seen in FIGS. 9 and 10, the lower block 42 has retracted into the lower section 27, as is evident from the position of pin 48 within slot 49 in FIG. 9.
When it is desired to move the cane from back into a folded, storage position, the steps are simply reversed. By manually depressing the catch button 50, the user is able to separate the upper and lower sections and then return the upper and lower sections to the position shown in FIG. 4.
Some prior foldable canes have tubular sections with a round cross-section, which can allow the various sections of the cane to rotate relative to one another when the cane is assembled for use. This is believed to allow for some play in the interconnected parts, thus leading to a looser “feel” for the user. Although rounded configurations are possible in connection with the present invention, in the illustrated cane, the upper and lower sections and block portions are configured to inhibit rotation of the upper section relative to the lower section when the cane is in the use position. As illustrated, the lower section 22 and the intermediate section 28, which is part of the upper section 26 in the illustrated embodiment, each have a generally square cross-section. These sections also are configured with slotted portions 61, 62 shown in FIG. 11 for the lower section 27, it being understood that the upper section is configured identically. Splined portions 63 on the blocks 64 (see FIG. 6) slide within these slot portions. Although this splined and slotted arrangement allows the upper and lower sections to slide axially relative to one another, rotation of the upper section and the lower section relative to one another is firmly inhibited. In practice, the positions of the slotted and splined positions may be reversed.
With reference now to FIG. 12, the upper section 26 includes a magnet 70, which, in the illustrated embodiment, is disposed within or forms a terminal region of the handle 35. The magnet 70 engages a corresponding magnet or metal surface 71 that is disposed within or forms a terminal region of on the lower section 27. Again, in practice, the position of the magnet and corresponding magnet or metal may be reversed. This mechanism creates a magnetic coupling of the upper and lower sections, such that, when the lower section is moved relative to the upper section into the folded position, the magnetic coupling thus created will cause an audible or tactile confirmation that the cane is fully folded. Additionally, the magnetic coupling cane will resist unfolding to some extent for retail display. Desirably, the lower section may include a protruding cap 74 that is retained via internal clip 75 within the lower section 27. The collar 32 is of a slightly greater dimension than the upper and lower sections, which in the illustrated embodiment have identical length and width. The protruding cap 74 positions the corresponding magnet or metal 71 slightly away from the exterior wall of the lower section 27 and at a dimension that is similar to that of the collar 32. Via this configuration, the lower section and upper section will be generally parallel relative to one another when in the folded position.
With reference now to FIGS. 13 and 14, the handle 35 may have a textured surface 80 disposed at a top surface thereof for user traction. The upper surface may further include a thumb rest region 81 that is not textured for comfort and to assist in proper hand placement. The handle 35 may be formed integrally with the upper section 26, but may also be provided as a separate piece, as illustrated, sized to fit within a tubular region of the upper section 26 and provided with a small shoulder 86 to enable the handle and upper section to meet at a flush joint. The handle 35 has an angled region 82 and a grip region 84 that define a crook 85. Returning to FIG. 4, the crook 85 is preferably sized relative to the foot 36 such that the foot 36 nests within the crook 85 when the cane is in the folded position. This again allows the upper and lower sections 26,27 to rest parallel to one another when the cane is in the folded position to allow ease of storage or a cleaner retail display,
With reference to FIGS. 15-17, the foot 36 is of sufficient dimension to enable the cane to be self-supporting when placed on a level surface. The foot 36 comprises a skirt 90 and a central 91, preferably each in the shape as illustrated. The skirt 90 is preferably of a relatively more pliable material than the nub 91, which is preferably is composed of a relatively pliable material. The nub 91 may be affixed to the skirt 90 via welding or adhesive. Via such construction, the skirt 90 will yield somewhat more readily than the central nub 91 during the ordinary walking motion of the user, thereby enabling the cane to pivot relative to the ground or floor when the user is walking. This construction is believed to facilitate in maintaining the natural walking motion of the user. In other embodiments, a relatively less pliable nub may be co-molded with a relatively more pliable skirt in the same mold, such that the nub and skirt are interchangeable. The skirt may be provided with apertures 92, as shown, which provide somewhat more “give” to the skirt.
The cane may be formed of parts that are conventional. The upper and lower sections may be formed from extruded aluminum tubing. The skirt and nub may be formed from thermoplastic rubber. The block portions may be composed of polyethylene or another suitable plastic, and the handle may be formed from plastic or a hard rubber material.
It is thus seen that a hinged walking cane may be provided in accordance with the above disclosure. Notably, the structure shown herein has been described with regard to a walking cane, but the disclosed construction may be used in one or more of its various aspects in connection with walkers, rollators, crutches, and other mobility devices.
All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or language describing an example (e.g., “such as”) provided herein, is intended to illuminate the invention and does not pose a limitation on the scope of the invention. Any statement herein as to the nature or benefits of the invention or of the preferred embodiments is not intended to be limiting. This invention includes all modifications and equivalents of the subject matter recited herein as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context. The description herein of any reference or patent, even if identified as “prior,” is not intended to constitute a concession that such reference or patent is available as prior art against the present invention. No unclaimed language should be deemed to limit the invention in scope. Any statements or suggestions herein that certain features constitute a component of the claimed invention are not intended to be limiting unless reflected in the appended claims. Neither the marking of the patent number on any product nor the identification of the patent number in connection with any service should be deemed a representation that all embodiments described herein are incorporated into such product or service.
Patent Grant
10772399
