Patent Grant
11871851
The invention relates generally to a lightweight, collapsible, and portable wheeled seat, e.g., a wheeled office chair or stool, for travel, storage, and mobility.
Manipulation of body parts performed by physical therapists, occupational therapists, medical nurses, chiropractors, and other office professionals and staff often requires that various movements to be achieved in order to perform the many manipulations for therapy. The professional will mostly perform the movements from a standing position. However, as can be expected, after providing therapy to a number of patients after considerable time, standing can become laborious and tiring to the professional. It, thus, often becomes necessary to perform said duties from a seated position, which is usually accomplished from various types of wheeled office chairs or stools.
The typical wheeled chair or stool is wheeled in order to allow the professional to quickly re-position themselves according to procedures needed to be performed. The underlying need to readily and quickly reposition themselves from a seated position is usually achieved via the typical wheeled stool or chair, which is usually not problematic in the context of an office or clinical setting. However, in the case where a therapist, for example, may need to provide therapy at a location other than their office or clinical setting and at a location where space may be limited, typical wheeled chairs and stools can be heavy, cumbersome, difficult to transport, or awkward. For example, the typical fixed wheeled chair or stool is normally awkward and/or not an efficient design in terms of space due to the fixed wheeled components that commonly include three, five, or six, leg portions that extend from a central stem or hub. Additionally, their general size and configuration is not particularly well-suited for use in tight spaces, for example, between therapy tables, tight clinical settings, or on-location settings. Their fixed nature, lack of adjustability, and weight is also not ideal for easy transport or storage.
Additionally, while collapsible stools and chairs are available, which for example, may include telescoping components for raising and lowering seat height and/or collapsible legs for storage or transport, such chairs or stools often sacrifice ergonomics, comfort, and/or strength and stability for ease of collapsibility. For example, such chairs and stools often have small, uncomfortable seats that lack lumbar support, are designed to favor collapsibility in favor of stability, and/or are fabricated from components that are insufficiently robust. Thus, a lightweight, collapsible chair or stool or chair that addresses the above issues is needed.
A lightweight, collapsible chair or stool in accordance with the instant disclosure attempts to address the aforementioned issues by providing, among other things, a robust collapsible and portable wheeled chair or stool that includes a large, sturdy, foldable and comfortable seating surface, an extendable and collapsible lumbar support, and collapsible legs including wheels—all of which are designed and assembled for comfort, stability, weight reduction, and transport and storage considerations.
At the outset it should be understood that while the following disclosure, figures, and/or claims, etc. describe subject matter including one or more aspects described as either alone or in combination with one or more other aspects, the subject matter of the instant disclosure is not intended to be so limited. That is, the instant disclosure, figures, and claims are intended to encompass the various aspects described herein, either alone or in one or more combinations with one another. For example, while the instant disclosure may describe and illustrate a first aspect, a second aspect, and a third aspect in a manner such that the first aspect is only specifically described and illustrated relative to the second aspect, or the second aspect is only described and illustrated relative to the third aspect, the instant disclosure and illustrations are not intended to be so limiting and may encompass the first aspect alone, the second aspect alone, the third aspect alone, or one or more combinations of the first, second, and/or third aspects, e.g., the first aspect and the second aspect, the first aspect and the third aspect, the second and third aspect, or the first, second and third aspects.
According to aspects described and illustrated herein, there is generally provided a lightweight, collapsible chair or stool, including a collapsible lumbar support, a collapsible base and a plurality of wheels.
In some aspects, a collapsible seat, e.g., a chair or stool, includes a seat base member and a seat surface member collapsible between an open, extended position, which is configured to provide a seating surface, and a collapsed, closed position. In some aspects, the seat surface member includes a central seating surface member fixed to the seat base member that has an outer perimeter, and a pair of oppositely disposed and generally u-shaped seating surface members pivotally secured to the seat base member. In some aspects, each of the generally u-shaped seating surface members include a pair of leg portions that extend from a base portion thereof. In some aspects, each of the u-shaped seating surface members have an inward directed perimeter and a portion of each inward directed perimeter has a shape that substantially complementarily corresponds to a shape of a portion of the outer perimeter of the central seating surface member. In some aspects, each of the leg portions include a hinge assembly secured proximate terminal ends thereof and to the seat base member such that each oppositely disposed and generally u-shaped seating surface member is pivotal between the open, extended position, and the collapsed, closed position. In some aspects, when pivoted to the open, extended position, the inward directed perimeter of each of the pair of generally u-shaped seating surface members describe a recess that substantially complementarily bounds and receives the outer perimeter of the central seating surface member therein.
In some further aspects, the outer perimeter of the central seating surface member substantially describes at least one or more of a portion of: a line, an arc, a circle, an oval, and a square, and the inward directed perimeter of each of the pair of generally u-shaped seating surface members has a shape that is substantially complementary therewith. In other words, the central seating surface member can be for example, a circle, an oval, square, or other shape, and the generally u-shaped seating surface members, when placed in the open extended position, have a complementary shape that bound the central seating surface member.
In some aspects, the seat base member is configured to fixedly secure the central seating surface member and pivotally secure each of the pair of generally u-shaped seating surface members on an upper side thereof and the upper surface of the seat base member has a perimeter that is larger than the perimeter of the central seating surface member. In some aspects, the central seating surface member is fixedly secured proximate a center of the upper side of the seat base member, and the pair of generally u-shaped seating members are pivotally secured to the upper surface of the seat base member at positions not corresponding to the central seating surface member.
In some aspects, a pivoting range of movement of the generally u-shaped seating surface members is between 0°, which corresponds to the open, extended position, and 90°, which corresponds to the closed, collapsed position. In some aspects, the upper side of the seat base member serves as a stop to limit the range of movement of the generally u-shaped seating surface members.
In some aspects, the seat base member is formed of one or more lightweight materials, e.g., aluminum or plastic, and includes a plurality of intersecting structural support ribs substantially forming a coffered structure, which tends to provide weight reduction, as well as strength and stability to the seat base member.
In some aspects, the seat base member includes a centrally disposed socket configured to connect the seat base member to a central support member including a telescoping piston member configured to adjust a height of the seating surface member. In some aspects, the central support member communicates with an adjusting lever allowing the height of the seating surface member to be adjusted.
In some aspects, the central support member includes a cylindrical collar having a cylindrical cavity configured to receive and secure the piston member therein. In some aspects, the cylindrical collar comprises at least two mating members detachable securable to one another. In some aspects, each of the mating members including at least one tapered structural support rib on an inner surface thereof such that when the at least two mating members are secured to one another for purposes of receiving and securing the piston member therein, a bias may be applied by the tapered ribs to the piston member to thereby frictionally secure the piston member within the cavity. In some aspects, each of the mating members include at least one recess that extends about an outer wall thereof such that when the at least two mating members are secured to one another to form the cylindrical collar, the recesses align with one another to extend about the circumference of the cylindrical collar. In some aspects, when a first leg retaining bracket is disposed within the aligned recesses, the first leg retaining bracket is secured therein and prevented from longitudinally directed movement relative to the cylindrical collar. In some aspects, a second leg retaining bracket is securable about a circumference of the piston member, the second leg retaining member being configured for longitudinally directed sliding movement relative to the piston member. In some aspects, the first and second leg retaining members pivotally secure at least three leg members such that the leg members are pivotal between an open, extended position, and a closed, collapsed position. In some aspects, an upper portion of the cylindrical collar serves as a stop to limit a range of the longitudinal movement of the second leg retaining member such that the leg members may be retained in the open, extended position. In some aspects, each of the legs include a wheel/caster member
In some aspects, the collapsible seat includes a multi-positionable lumbar support assembly that is positionable between an open, extended position and a closed, collapsed position. In some aspects, the multi-positionable lumbar support is formed from one or more tube members that comprise a first end portion rotatably secured to a bottom surface of one of the generally u-shaped seating surface members, and a second end portion that rotatably secures a backrest member. In some aspects, the first end portion rotatably secured to the bottom surface of one of the generally u-shaped seating surface members includes at least one detent mechanism configured to maintain the multi-positionable lumbar support assembly in the open, extended position and the closed, collapsed position. In some aspects, the detent mechanism includes a biased ball/pin member and a plurality of linearly incremented through-holes for receiving the ball/pin member therein to incrementally linearly position the rotationally positionable lumbar support assembly in a frontward/rearward direction. In some aspects, the detent mechanism includes a biased ball/pin member and a rotationally offset through-hole or channel for purposes of locking or placing the multi-positionable lumbar support assembly member in the closed/collapsed position. In some aspects, the multi-positionable lumbar support assembly includes a mid-portion between the first end portion and the second end portion, the mid-portion being rotatable and telescopeable to thereby allow the backrest member to be rotated and also allow a height of the backrest member to be incrementally adjusted. In some aspects, the mid-portion includes a detent mechanism, e.g., a biased ball/pin member and a plurality of linearly incremented through-holes for receiving the ball/pin member therein such that the backrest member can be rotationally adjusted and incrementally linearly positioned in an upward/extended direction, and one or more rotationally offset through-holes such that the backrest member may be positioned in a downward/collapsed direction. In some aspects, backrest member position may be maintained by frictional forces between a tube member and a bracket. While not shown, it should be understood that the backrest member may be positioned, and the position maintained, by means of a detent mechanism that limits a range of rotation of the backrest member, the detent mechanism including a ball/pin member receivable in one or more through-holes or a slot/channel in the bracket. Additionally, a compression-type locking mechanism or a clutch-type locking mechanism, for example, could also be used to adjust/arrest movement of the lumbar support assembly.
In some aspects, each of the pair of generally u-shaped seating surface members include a carrying handle member on an outer edge thereof such that when each generally u-shaped seating surface members is pivoted to the open, extended position, the carrying handle members are oriented such that they correspond to leftward/rightward sides of the collapsible seat, and when each generally u-shaped seating surface members is pivoted to the closed, collapsed position, the carrying handle members are oriented toward an upper side of the collapsible seat for readily carrying the collapsed seat. In some aspects, each of the carrying handle members are slidably secured to outer edge of a respective seating surface member and each further comprise an magnet/magnetically attractive member that is magnetically attracted to a magnetically attractive member/magnet disposed proximate the surface of the outer edge of each of the u-shaped seating surface members. In some aspects, the seating surface member is upholstered/cushioned with a cover suitable for a clinical setting, e.g., non-absorbing, that is capable of withstanding significant wear and tear, e.g., leather or faux-leather, and a cellular foam, e.g., a closed cell foam, an open cell foam, memory foam, self-skinning foam, or one or more combinations thereof.
These and other aspects, features, and advantages of the present disclosure will become readily apparent upon a review of the following detailed description of the disclosure, in view of the drawings and appended claims.
Various aspects are disclosed, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, in which:
At the outset, it should be appreciated that like drawing numbers on different drawing views identify identical, or functionally similar, structural elements. It is to be understood that the claims are not limited to the disclosed aspects.
Furthermore, it is understood that this disclosure is not limited to the particular methodology, materials and modifications described and as such may, of course, vary. It is also understood that the terminology used herein is for the purpose of describing particular aspects only and is not intended to limit the scope of the claims.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure pertains. It should be understood that any methods, devices or materials similar or equivalent to those described herein can be used in the practice the example aspects.
It should be appreciated that the terms “substantially” and “generally” are synonymous with terms such as “nearly,” “very nearly,” “about,” “approximately,” “around,” “bordering on,” “close to,” “essentially,” “in the neighborhood of,” “in the vicinity of,” etc., and such terms may be used interchangeably as appearing in the specification and claims. It should be appreciated that the term “proximate” is synonymous with terms such as “nearby,” “close,” “adjacent,” “neighboring,” “immediate,” “adjoining,” etc., and such terms may be used interchangeably as appearing in the specification and claims. The term “approximately” is intended to mean values within ten percent of the specified value.
It should be understood that use of “or” in the present application is with respect to a “non-exclusive” arrangement, unless stated otherwise. For example, when stating that “item x is A or B,” it is understood that this can mean one of the following: (1) item x is only one or the other of A and B; (2) item x is both A and B. Alternately stated, the word “or” is not used to define an “exclusive or” arrangement. For example, an “exclusive or” arrangement for the statement “item x is A or B” would require that x can be only one of A and B. Furthermore, as used herein, “and/or” is intended to mean a grammatical conjunction used to indicate that one or more of the elements or conditions recited may be included or occur. For example, a device comprising a first element, a second element and/or a third element, is intended to be construed as any one of the following structural arrangements: a device comprising a first element; a device comprising a second element; a device comprising a third element; a device comprising a first element and a second element; a device comprising a first element and a third element; a device comprising a first element, a second element and a third element; or, a device comprising a second element and a third element.
As previously set forth, while the following disclosure and accompanying figures, and/or claims, etc. describe subject matter including one or more aspects described as either alone or in combination with one or more other aspects, the subject matter of the instant disclosure is not intended to be so limited. That is, the instant disclosure, figures, and claims are intended to encompass the various aspects described herein, either alone or in one or more combinations with one another. For example, while the instant disclosure may describe and illustrate a first aspect, a second aspect, and a third aspect in a manner such that the first aspect is only specifically described and illustrated relative to the second aspect, or the second aspect is only described and illustrated relative to the third aspect, the instant disclosure and illustrations are not intended to be so limiting and may encompass the first aspect alone, the second aspect alone, the third aspect alone, or one or more combinations of the first, second, and/or third aspects, e.g., the first aspect and the second aspect, the first aspect and the third aspect, the second and third aspect, or the first, second and third aspects.
It will be appreciated that various aspects of the disclosure above and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
Adverting now to the figures, as shown in
Seat surface assembly 12 generally includes central seating surface member 14 and a pair of generally U-shaped seating surface members 16, each of which are secured to generally H-shaped seat base member 18. Central seating surface member 14 and pair of generally U-shaped seating surface members 16 (as well as backrest 66) can be upholstered/cushioned with a cover suitable for a clinical setting, e.g., non-absorbing, that is capable of withstanding significant wear and tear, e.g., leather or faux-leather, and can also include cushioning material a such as cellular foam, e.g., a closed cell foam, an open cell foam, memory foam, self-skinning foam, or one or more combinations thereof. Central seating surface member 14 describes an outer perimeter 20. Generally U-shaped seating surface members 16 each include leg portions 22 and base portions 24 which define a perimeter including inwardly directed perimeter 26. Each of the generally U-shaped seating surface members 16 include a pair of leg portions 22 including terminal ends 32 that substantially abut terminal ends of another oppositely disposed generally U-shaped seating surface member when the collapsible seat is placed in the open extended position. As may be appreciated from the figures, inwardly directed perimeter 26 forms a recess/void 34 that complementarily receives the outer perimeter 20 of the central seating surface member 14 therein. Accordingly, when the generally U-shaped seating surface members 16 are placed in the open/extended position, the generally U-shaped seating surface members 16 substantially abut and bound the central seating surface member 14. As may be further appreciated, various perimeter edges of the central seating surface member 14 and generally U-shaped seating surface members 16 can be chamfered, as appropriate, for purposes of providing comfort to a user, as well as to allow the generally U-shaped seat surface members 16 to be more easily collapsed relative to the central seating surface member 14 and received within void/recess 23 of H-shaped seat base member.
While the central seating surface member 14 is shown as being in the shape of a square, and the central seating surface member 14 in combination with the generally U-shaped seating surface members 16 are shown as forming a square shape when placed in the open/extended position (See, e.g.,
In addition to the above, generally U-shaped seating surface members 16 include outer edges 78 that can include carrying handles 77 capable of being laid flat when the collapsible seat is placed in the open/extended position (See, e.g.,
As shown in
As may also be appreciated from
As also shown in
As also shown in
As shown in
Central support assembly 42 generally includes piston member 43 and cylindrical collar 45 for receiving a second end of the piston member 43 therein. As shown in
As may be appreciated from
In accordance therewith, collar member fastening assemblies 49 are generally shown as including a pair of projections each including a through-hole capable of receiving a corresponding nut or bolt, for example, for securing the cylindrical collar mating members 46 to one another at a lower end. The cylindrical collar mating members 46 may be secured to one another at a mid-portion via collar mating recesses 48 disposed proximate the mid-portion of each of the members. As may be appreciated, recesses 48 are disposed at a same position along the cylindrical collar mating members 46 such that when the mating members 46 are secured to one another, the recesses they align so as to form a continuous recess about the cylindrical collar 45. As shown in
As may be appreciated, by providing detachably securable mating members 46 including tapered structural support ribs 47, that are securable to one another via collar member fastening assembly 49, and recesses 48 and U-shaped bracket members 56 securable to one another via, for example, appropriate length bolts, nuts, and spacers (See
Referring now to
As may be appreciated from the figures, each of a plurality of leg members 57 is shown as securing a wheel/caster 58 at a first end thereof and pivotally securing a first end of a strut member 55 at a mid-portion thereof, which strut member 55 includes a second end pivotally securable to a U-shaped bracket 56 of first/lower leg retaining bracket assembly 50, which assembly 50 is prevented from sliding movement within recesses 48. A second end of each leg member is pivotally securable to a U-shaped bracket of the second/upper leg retaining bracket assembly 51, which assembly 51 is configured for sliding movement. While the figures illustrate that the leg/wheel assembly 39 comprises a total of five (5) leg members, wheels, etc., it should be appreciated that the collapsible chair can comprise as little as three (3) leg members, wheels, etc. As previously discussed, first/lower leg retaining bracket assembly 50 is secured within recesses 48 such that sliding movement is prevented and second/upper leg retaining bracket assembly 51 is configured for sliding movement along a length of gas piston 43 such that the leg/wheel assembly 39 may be placed in the open/extended position as shown in
Turning now to
As shown in the figures, tube members 61/64 (and lumbar support assembly 60 in general) generally comprise a first end portion 62 corresponding to that portion rotationally secured to the bottom surface 63, a second end portion 65 corresponding to the backrest member 66 and a mid-portion 71 disposed between the first end portion and the second end portion.
First end portion 62 is generally received and rotatable within detent bracket assembly 67. As shown in
Mid-portion 71 is generally connected to the first end portion 67 via a u-shaped section tube member and includes detent assembly 72 comprising a plurality of linearly incremented through-holes 74 and rotationally offset through-hole 75, each of which through-holes 74/75 are capable of receiving a biased ball/pin member 73 therein. As may be appreciated from the incremented positions of the ball/pin member 73 relative to linearly incremented through-holes 74 and through-hole 75 in each of
As shown in
It will be appreciated that various aspects of the disclosure above and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
This application claims the benefit under Articles 4 and 8 of the Stockholm Act of the Paris Convention for the Protection of Industrial Property of U.S. Provisional Patent Application No. 62/954,832, filed on Dec. 30, 2019, which application is hereby incorporated by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2020/066408 | 12/21/2020 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2021/138120 | 7/8/2021 | WO | A |
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| Number | Date | Country | |
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| 20230088982 A1 | Mar 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| 62954832 | Dec 2019 | US |
