Not Applicable
The present inventive subject matter generally relates to assistive mobility devices and more particularly to a collapsible wheeled walker or rollator with a folding mechanism that includes a releasably engageable bracket to securely hold the folding mechanism in place when the apparatus is fully deployed for increased stability and other benefits.
Assistive mobility devices, including walkers or rollators, are widely used by mobility impaired individuals. A detailed discussion of the use and classification of mobility assistance devices is discussed in U.S. Pat. No. 9,585,807 to Fellingham, issued on Mar. 7, 2017 and entitled Collapsible Upright Wheeled Walker Apparatus (“Fellingham”), the entire substance of which is incorporated herein by reference as though fully set forth herein.
Many existing wheeled walker and rollator devices were not designed to support significant user weight during use and are used for the accepted purpose of providing assistance in balance and gait. Use of such devices requires the user to engage the walker or rollator with the hands and wrists alone, often with a stooping and leaning posture. Fellingham discloses an apparatus with raised adjustable forearm support elements to provide upper body support to a user allowing the wheeled walker to support a significant amount of a user's weight while the user is walking. Fellingham discloses allowing a user to engage the wheeled walker in an upright walking position supported by the user's forearms and including two forward hand grips. The upright walking posture has the advantages reducing heart and lung compression, improves circulation and providing the therapeutic effects of longer walking times. Other currently pending applications disclose wheeled walkers supporting upright walking posture with supports for user's upper body or forearms and include U.S. Patent Application Publication No. 2019/0105221 filed Jan. 20, 2018 entitled Wheeled Walker with Movable Seat to Pan (“Pan”) and U.S. Patent Application Publication No. 2019/0105222 filed Oct. 2, 2018 entitled Wheeled Walker to Fellingham (“Fellingham II”), the entire substance of both Pan and Fellingham II are incorporated herein by reference as though fully set forth herein.
Also, many of existing wheeled walkers and rollators include the ability to fold or collapse using folding mechanisms and are designed to keep the walker or rollator lightweight. In the deployed configuration, while such lightweight devices remain fixedly open, such folding mechanism designs do not have a robust support mechanism in the deployed or open configuration. For example, in some collapsible wheeled walkers and rollators may employ an x-folding apparatus that in the deployed configuration, the sides of the x-folder simply rest upon laterality placed stops, without fixedly holding sides in place. Latches on such prior devices may keep the devices from re-folding, but the latches do not provide for significant structural fixed support to resist lateral deformation or instability of the device.
As such, there is a need in the art to provide a lighter weight wheeled walker or rollator that provides for a collapsible system that in the deployed configuration holds the sides of the folding apparatus in fixed position to resist lateral instability. Also, there is a need in the art for wheeled walkers or rollators with raised adjustable forearm support elements to allow the upright walking of the user causing the wheeled walker or rollator to support significant weight of the user, to have a collapsible system that in the deployed configuration holds the sides of the folding apparatus in fixed position to resist instability.
All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
The inventive subject matter described herein demonstrates an apparatus and method for a collapsible wheeled walker or rollator that includes a folding mechanism that includes at least one releasably engageable bracket that securely holds the seat folding mechanism in place when the apparatus is fully deployed for increased stability and other benefits.
The disclosed device is a collapsible wheeled walker that has first and second side frames. The side frames each have opposed inner and outer sides, with the inner sides facing each other inwardly, and the outer sides facing outwardly, away from the center of the wheeled walker. Each side frame incudes a plurality of coupled members. At the bottom of each of the side frames there is an elongate base member extending longitudinally from the rear to the front of the walker device and to which are coupled a plurality of wheel assemblies. In a shown embodiment, the elongate base member has first and second sides, with the front end of each side having an attached front wheel assembly and the rear end of each side having a rear wheel assembly. A strut member is coupled to the base member at a point between the first front end and second rear end of the base member and extends upwardly from said base member. A portion of the strut member may extend upwardly from the base member at an angle toward the back of the device. The strut members are adjustably coupled to forearm supports that can be adjusted upwardly and downwardly to adjust to the height of the user. The height adjustment uses an extension member that has graduated holes adapted to engage a button and pin arrangement. When the adjustment member is received within the strut member and is positioned to the desired location, a pin may engage a graduated hole to hold the adjustment member at the proper location with the adjustment member telescoping upwardly and downwardly into the strut member and locking into the desired height by a user. A bracket support member is also part of each of the side frames and the bracket support is coupled to strut member and extends longitudinally forward from the strut member. Two brackets are positioned on each of the inner sides of the first and second frames along respective bracket support members, and each of said brackets have a support surface and including at least one protrusion extending from the support surface.
An X-folder apparatus interconnects the first and second side frames with the first and second side frames positioned with the inner side of the first frame facing the inner side of the second frame. The X-folder apparatus includes a first cross member having a first and second ends, the first end of the first cross member is pivotally connected to the base member of the first side frame, the second end of the first cross member is coupled to an elongate support member, the elongate support member of the first cross member having two apertures or openings. The second cross member is similarly constructed having first and second ends, the first end of the second cross member being pivotally connected the base member of the second side frame and the second end of the second cross member being coupled to an elongate support member and the elongate support member of the second cross member having two apertures or openings.
In the deployed open position, the elongate support members of the first and second cross members are received on the support surfaces of the support brackets of the bracket support members of the first and second frames, and the protrusions of the support brackets are received in the respective apertures of the elongate support members of the first and second cross members. The brackets may be c-shaped and have a complementary shape to that of the support members so that they are received in a nested friction fashion to assist in holding the support members in place. Also, the protrusions may be conically shaped and extend from the support surface of the bracket to engage the openings of the support members to provide additional stability. Latch mechanisms also engage the cross members to linkages to hold the device in the open deployed position during operation, but the latches release upon the cross members being rotated upwardly. A fabric seat is attached to the tops of the support members so that in the open position, a seat is formed for use.
Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:
The detailed description set forth below in connection with the appended drawings is intended as a description of certain embodiments of a collapsible wheeled walker apparatus and related method of use and is not intended to represent the only forms that may be developed or utilized. The description sets forth the various structure and/or functions in connection with the illustrated embodiments, but it is to be understood, however, that the same or equivalent structure and/or functions may be accomplished by different embodiments that are also intended to be encompassed within the scope of the present disclosure. It is further understood that the use of relational terms such as first and second, and the like are used solely to distinguish one entity from another without necessarily requiring or implying any actual such relationship or order between such entities.
The background, summary and the above description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed inventive subject matter, or that any publication specifically or implicitly referenced is prior art.
In some embodiments, the numbers expressing dimensions, quantities, quantiles of ingredients, properties of materials, and so forth, used to describe and claim certain embodiments of the disclosure are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the disclosure are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the disclose may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
As used herein, and unless the context dictates otherwise, the term “coupled to” is intended to include both direct coupling (in which two elements that are coupled to each other contact each other) and indirect coupling (in which at least one additional element is located between the two elements). Therefore, the terms “coupled to” and “coupled with” are used synonymously.
Unless the context dictates the contrary, all ranges set forth herein should be interpreted as being inclusive of their endpoints, and open-ended ranges should be interpreted to include commercially practical values. Similarly, all lists of values should be considered as inclusive of intermediate values unless the context indicates the contrary.
The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. 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 exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the disclosure and does not pose a limitation on the scope of the claimed inventive subject matter. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the inventive subject matter.
Groupings of alternative elements or embodiments of the inventive subject matter disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all Markush groups used in the appended claims.
The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed. Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the scope of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
Referring particularly to
The wheeled walker apparatus 10 additionally includes two upper adjustment members 40 and 42 inserted into and slidably engaged into struts 28 and 30, respectively. Locking pins (not shown) are engaged and disengaged by respective lock buttons 44 and 46 to operate and lock respectively slidably engaged upper adjustment members 40 and 42 at a selectable elevation above a walking surface for a particular user height. Support members or forearm gutters 48 and 50 are attached to the top of the adjustment members 40 and 42 respectively. In one embodiment, forearm gutters 48 and 50 are oval shaped and have a curved interior surface configuration in order for a user 52 (shown in
A seat 62, formed of a pliable material, such as fabric or mesh, is also provided to extend between the bracket support members 32 and 34 attached an X-folder apparatus which is discussed in greater detail with regard to
The seat 62 may include a rear peripheral edge 65 and a front peripheral edge 67. The wheeled walker apparatus 10 may be configured such that the rear peripheral edge 65 may be positioned generally forwardly, so as to mitigate undesirable contact with the user's legs when the user is walking. In this regard, the rear peripheral edge 65 may be positioned in front of a rear edge 69, 71 of the struts 28, 30, at least as to the plane in which the seat 62 extends when the seat 62 is deployed. In another embodiment, the rear peripheral edge may be positioned in front of the entirety of the struts 28, 30, such that there is a gap between the rear peripheral edge 65 and the front edge 73, 75 of the struts 28, 30. The forward position of the seat 62 may keep the seat 62 in front of the middle of the user's forearms resting in the gutters 48, 50.
Referring to
Referring to
X-folder interconnecting side frames 12 and 14. The X-folder apparatus comprises cross member 86 and cross member 88 which are pivotably connected at a pivot 90 to allow a scissor like movement of the cross members 86 and 88. Cross member 86 is pivotally connected to side frame 12 on the inner side of base member 16 via a perpendicular end member 92. Likewise, cross member 88 is pivotally connected to side frame 14 on the inner side of base member 18 via a perpendicular end member 94. Bracket support members 32 support brackets 96 and 98, and bracket support member 34 supports brackets 100 and 102. Cross member 86 is also attached to bracket support member 34 through pivot linkage 104 that is pivotally connected to bracket support member 34 on a first side and pivotally connected to the cross member 86 on a second side. Likewise, cross member 88 is pivotally connected to bracket support member 32 through pivot linkage 106 that is pivotally connected to bracket support member 32 on a first side, and pivotally connected to the cross member 88 on a second side. Cross member 86 also has a perpendicular support member 108 coupled at end of the cross member 86 opposite of pivot connection 92. Likewise, cross member 88 has a perpendicular support member 110 coupled at the end of cross member 88 opposite the pivot connection 94.
Referring to
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While the disclosed embodiments show the device 10 with four wheel assemblies, with adjustments to the elements and components the device 10, it is contemplated that the device 10 may be embodied with three wheels or three wheel assemblies, by using a single front wheel assembly, or with five or more wheels, by adding a central front wheel as- assembly, for example, without affecting the other advantages and features described herein.
The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the disclosure herein. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.
The present application claims the benefit of U.S. Provisional Application No. 62/830,183, filed Apr. 5, 2019, the contents of which are expressly incorporated herein by reference.
Number | Date | Country | |
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62830183 | Apr 2019 | US |