Patent Application
20170273840
Wheelchairs and similar conveyances are an important means of transportation for a significant portion of society. Whether manual or powered, wheelchairs provide an important degree of independence for those they assist.
The present application discloses exemplary embodiments of wheelchairs having adjustable seating frames, wheels, and other components and arrangements.
According to an exemplary aspect of the present application, a wheelchair may be providing with a seat tilting mechanism configured to provide for smooth manual tilting actuation across a range of positions, and secure attachment in a range of tilting positions.
In an exemplary embodiment, an adjustable wheelchair includes a base frame having a first guide portion defining a first arcuate channel, and a seat frame having a second guide portion defining a second arcuate channel confronting the first arcuate channel. A first bearing assembly is secured to a front end of the first arcuate channel and extends into bearing engagement with the second arcuate channel. A rear bearing assembly is secured to a rear end of the second arcuate channel and extends into bearing engagement with the first arcuate channel. The seat frame is slideable in an arcuate path defined by the first and second arcuate channels for adjustment of a tilt angle of the seat frame with respect to the base frame.
According to another exemplary aspect of the present application, a wheelchair may be providing with wheel attachment arrangements providing for adjustment of front and rear wheel attachment to the base frame of the wheel chair, for example, to provide for attachment of different size wheels, to adjust the vertical position the seat frame with respect to the ground, and/or to adjust the angular position of the seat frame on the base frame (e.g., to provide for a slight anterior tilt of the seat frame to facilitate getting out of the chair).
In an exemplary embodiment, an adjustable base frame for a wheelchair includes a longitudinally extending frame member and a front wheel caster assembly. The caster assembly includes a caster wheel rotatably secured to a stem portion, with the stem portion being affixed to a mounting bracket mounted to a front end portion of the frame member. The mounting bracket includes a first aperture closely receiving a first fastener threaded with an aligned first mounting hole in the front end portion of the frame member, an elongated second mounting aperture vertically spaced from, and longitudinally aligned with the first mounting aperture, receiving a second fastener threaded with an aligned second mounting hole in the front end portion of the frame member, and an eccentric third mounting aperture longitudinally spaced from the first and second mounting apertures. An eccentric camming plate is received in the eccentric third mounting aperture and including a third fastener extending therethrough and threaded with a third mounting hole in the front end portion of the frame member, the eccentric camming plate being tightened with the eccentric mounting hole by the third fastener to secure the front wheel caster in a selected angular position.
According to another exemplary aspect of the present application, a wheelchair may be providing with seat, arm, and cane attachment arrangements providing for adjustment of the seating area, arm supports, and canes on the seat frame, for example, with respect to the seat guide portions, to adjust the mass of the user on the chair to facilitate mobility and tilting.
In an exemplary embodiment, an adjustable seat frame for a wheelchair includes a front cross member, a rear cross member longitudinally spaced from the front cross member, a longitudinally extending first side frame member mounted to a first end portion of each of the front and rear cross members by first front and rear mounting brackets, and a longitudinally extending second side frame member mounted to a second end portion of each of the front and rear cross members by second front and rear mounting brackets, the first and second side frame members defining a seating area. Each of the first and second side frame members is independently longitudinally adjustable with respect to the front and rear cross members.
According to another exemplary aspect of the present application, cylindrical tubular frame members used, for example, with a wheelchair may be adapted to include flatted cylindrical portions providing one or more flatted surfaces for more secure, rigid attachment of flat mounting plates, mounting brackets, or other such accessories, for example, by fasteners installed through aligned mounting holes in the flatted tubular member and the mountable accessory.
In an exemplary embodiment, an adjustable seat frame for a wheelchair includes a front cross member, a rear cross member longitudinally spaced from the front cross member, a longitudinally extending first side frame member mounted to a first end portion of each of the front and rear cross members, and including a cylindrical portion and a flatted cylindrical portion, a longitudinally extending second side frame member mounted to a second end portion of each of the front and rear cross members, the first and second side frame members defining a seating area, and including a cylindrical portion and a flatted cylindrical portion, a first mounting bracket having a C-clamp end portion attached to the cylindrical portion of one of the first and second side frame members, and a second mounting bracket having flat first and second side walls attached to the flatted cylindrical portion of one of the first and second side frame members.
According to another aspect of the present application, rear anti-tip leg assemblies, provided on a back end of a wheelchair to provide support for the chair in the event that the chair is unintentionally tipped rearward about the rear wheels, may be adapted to be adjustably positioned on the base frame for easy pivoting of the leg assembly out of the way of a caregiver pushing the wheelchair or for more compact stowing of the wheelchair.
In an exemplary embodiment, a base frame assembly for a wheelchair includes a longitudinally extending side frame member, a rear wheel rotatable about an axle secured to a rear end portion of the side frame member, and an anti-tip leg assembly including a hollow base portion affixed to the rear end portion of the side frame member, rearward of the axle, a leg portion extending axially through the hollow base portion from a first end proximate the side frame member to a distal end having a ground engaging portion configured to support the wheelchair if the base frame is accidentally tipped rearward about the rear wheel. The leg portion is axially biased into a rotationally fixed position with the ground engaging portion in an anti-tip position. The first end of the leg portion is axially movable to a rotatable position to permit rotation of the leg portion for movement of the ground engaging portion to a disengaged position.
Further features and advantages will become apparent to those of ordinary skill in the art to which the invention pertains from a reading of the following description together with the accompanying drawings, in which:
This Description merely describes exemplary embodiments and is not intended to limit the scope of the claims in any way. Indeed, the invention as claimed is broader than and unlimited by the exemplary embodiments, and the terms used in the claims have their full ordinary meaning.
As described herein, when one or more components are described as being connected, joined, affixed, coupled, attached, or otherwise interconnected, such interconnection may be direct as between the components or may be indirect, such as through the use of one or more intermediary components. Also as described herein, reference to a “member,” “component,” or “portion” shall not be limited to a single structural member, component, or element but can include an assembly of components, members or elements.
The present application describes exemplary embodiments of an adjustable wheelchair, operable or configurable to adjust one or more configurations of the wheelchair, including, for example, a tilt position of the seat frame with respect to the chair base frame, vertical and horizontal positioning of the seat frame on the base frame, and wheel configurations on the base frame.
According to an exemplary aspect of the present application, a tilting mechanism of an adjustable chair may utilize interengaging arcuate guides (e.g., tracks, sleeves, channels, rails, rods, series of bearings, etc.) disposed on the seat frame and the base frame, shaped to provide rotational tilting movement of the seat assembly about a fixed central axis, as defined by the center of curvature of the guides, due to sliding relative movement of the interengaging guides. In one such exemplary embodiment, the arcuate guides may be positioned and shaped such that the resulting central axis of rotation coincides with or is proximate to the center of gravity of a user seated in the adjustable chair, or the center of gravity of the user and seat in combination, such that movement of this center of gravity during a tilting operation is limited or minimized. This limited movement of the user's center of gravity may reduce resistance to tilting, requiring reduced operator effort to perform the tilting operation, and may improve chair stability by maintaining the user center of gravity in a location well supported by the seat assembly and positioning base, and at least one bearing member disposed on the other of the base and the seat assembly.
Many different arrangements or combinations of arrangements may be utilized to provide for ease of adjustment of a wheelchair seat tilt angle and secure retention of the seat in a selected angle. In an exemplary embodiment, an adjustable wheelchair includes a base frame having a first guide portion defining a first arcuate channel, and a seat frame having a second guide portion defining a second arcuate channel confronting the first arcuate channel. A first bearing assembly is secured to a front end of the first arcuate channel and extends into bearing engagement with the second arcuate channel. A rear bearing assembly is secured to a rear end of the second arcuate channel and extends into bearing engagement with the first arcuate channel. The seat frame is slideable in an arcuate path defined by the first and second arcuate channels for adjustment of a tilt angle of the seat frame with respect to the base frame.
While many different types of sliding interengagement may be utilized, in the illustrated embodiment, the base guide portions 130a, 130b define inward facing base channels 131a, 131b, and the seat guide portions 150a, 150b define outward facing seat channels 151a, 151b confronting the inward facing channels. In another embodiment (not shown), the base guide portions may define outward facing base channels and the seat guide portions may define inward facing seat channels confronting the outward facing base channels.
In the illustrated embodiment, the base guide portions 130a, 130b include front bearing assemblies 132a, 132b secured in the front ends of the base channels 131a, 131b and extending laterally beyond the base channels for receipt in, and bearing engagement with, the seat channels 151a, 151b. Likewise, the seat guide portions 150a, 150b include rear bearing assemblies 152a, 152b secured in the rear ends of the seat channels 151a, 151b and extending laterally beyond the seat channels for receipt in, and bearing engagement with, the base channels 131a, 131b. This bearing arrangement limits bearing contact between the outer and inner guide portions 130a, 130b, 150a, 150b to front and rear bearing assembly engagement with the channels, for example, to provide for smoother tilting actuation due to reduced surface contact.
As the seat frame 140 reclines, the rear bearing assemblies 152a, 152b slide forward, with the seat channels 151a, 151b. When the seat frame 140 is in a fully reclined position, the rear bearing assemblies 152a, 152b are proximate to the front bearing assemblies 132a, 132b, substantially below the center of gravity of the user for weight bearing support of the user. Engagement of the rear bearing assemblies 152a, 152b with the front bearing assemblies 132a, 132b prevents sliding separation of the seat frame 140 from the base frame 120 when the seat frame is tilted to the fully reclined position. To prevent sliding separation of the seat frame 140 from the base frame 120 when the seat frame is tilted to the fully upright position, stop members 139a, 139b (shown in
Many different types of bearing assemblies may be utilized for bearing engagement between the base and seat guide portions, including, for example, ball bearings and roller bearings. In the illustrated embodiment, each bearing assembly 132a, 132b, 152a, 152b includes a horizontal roller bearing 133a, 133b, 153a, 153b (i.e., having a radial, primarily vertical rotational axis) that engages a substantially vertical bottom surface of the opposed channel 131a, 131b, 151a, 151b, and a vertical roller bearing 134a, 134b, 154a, 154b (i.e., having a horizontal rotational axis) that engages the opposed side surfaces of the opposed channel 131a, 131b, 151a, 151b. This bearing arrangement limits relative movement of the guide portions in both the radial and lateral directions. To further minimize friction during tilting movement, self-lubricating stainless steel bearings may be used.
Each of the guide portions may be provided with wiper portions that extend into the opposed channels of the interengaging guide portions, for example, to clear the channels of debris or contaminants. In the illustrated embodiment, the base guide member 130a, 130b include front wiper plates 135a, 135b that extend into the seat channels 151a, 151b for wiping engagement with any debris within the channels. Likewise, the seat guide member 150a, 150b include rear wiper plates 155a, 155b that extend into the base channels 131a, 131b for wiping engagement with any debris within the channels.
According to another aspect of the present application, a seat frame may be selectively securable in a wide range of tilting positions, for example, between an upright position (e.g., with the seat back at about 0° with respect to vertical) and a fully reclined position (e.g., with the seat back at about 40° to about 60° with respect to vertical). In one such exemplary embodiment, the seat may be securable in a range of positions between about 0° and about 50° in 2° increments, providing for twenty-six different selectable tilting positions. In other embodiments, other ranges and other numbers of selectable positions may be provided.
Many different types of latching or securing arrangements may be utilized to secure the seat in the selected tilt position. In one embodiment, one of the base guide portions and the seat guide portions includes a series of positioning recesses along an arcuate length of the corresponding channel, and the other of the base guide portions and the seat guide portions includes laterally adjustable bolt (e.g., pin, plate, block, bar) extending from the corresponding channel. The bolt is extendable into a selected one of the positioning recesses to secure the seat in a selected tilt position, and is retractable from the positioning recess to permit tilting adjustment.
Many different types of retractable bolt arrangements may be utilized to facilitate tilting adjustment and latching of the seat frame. In the illustrated embodiment, each of the seat guide portions 150a, 150b includes a retractable latch pin 156a, 156b that is receivable in one of a plurality of positioning recesses 136a, 136b disposed in the base channels 131a, 131b of the base guide portions. To facilitate engagement of the latch pin 156a, 156b with a selected recess 136a, 136b, the pin may be spring biased toward the extended position, and may include a contoured end surface (e.g., rounded), such that the spring force acts to facilitate alignment of the pin with the recess. As shown, the latch pins 156a, 156b may extend through hollow center shaft portions of the rear vertical roller bearings 154a, 154b. As shown, the recesses 136a, 136b may comprise holes in plate portions 137a, 137b that define the bottom surfaces of the base channels 131a, 131b. The base guide portions 130a, 130b may include arcuate cover members 138a, 138b that are removable to expose the outer ends of the positioning recesses 136a, 136b, for example, for cleaning, or to access a stuck latch pin. In another embodiment (not shown), the positioning recesses may be disposed in the channels of the seat guide portions and the latch pins may be carried by the base guide portions.
In the illustrated embodiment, the latch pin is retracted by a cable actuated lever mechanism 160a, 160b, including a cable 161a, 161b that is attached at a first end to a hand grip trigger 168a, 168b (shown schematically in phantom in
According to another aspect of the present application, a wheelchair may be providing with wheel attachment arrangements providing for adjustment of front and rear wheel attachment to the base frame of the wheel chair, for example, to provide for attachment of different size wheels, to adjust the vertical position the seat frame with respect to the ground, and/or to adjust the angular position of the seat frame on the base frame (e.g., to provide for a slight anterior tilt of the seat frame to facilitate getting out of the chair). In an exemplary embodiment, an adjustable base frame for a wheelchair includes a longitudinally extending frame member and a front wheel caster assembly. The caster assembly includes a caster wheel rotatably secured to a stem portion, with the stem portion being affixed to a mounting bracket mounted to a front end portion of the frame member. The mounting bracket includes a first aperture closely receiving a first fastener threaded with an aligned first mounting hole in the front end portion of the frame member, an elongated second mounting aperture vertically spaced from, and longitudinally aligned with the first mounting aperture, receiving a second fastener threaded with an aligned second mounting hole in the front end portion of the frame member, and an eccentric third mounting aperture longitudinally spaced from the first and second mounting apertures. An eccentric caroming plate is received in the eccentric third mounting aperture and including a third fastener extending therethrough and threaded with a third mounting hole in the front end portion of the frame member, the eccentric camming plate being tightened with the eccentric mounting hole by the third fastener to secure the front wheel caster in a selected angular position.
In the illustrated embodiment, rear wheel assemblies 171a, 171b are attached to base side frame members 170a, 170b (shown in the illustrated embodiment as cylindrical tubes) of the base frame 120 by rear wheel mounting brackets 172a, 172b. The mounting brackets include multiple rows of mounting apertures oriented to allow for mounting the rear wheel assemblies 171a, 171b (to mounting holes in the side frame members) in multiple vertical positions with respect to the side frame members 170a, 170b. The rear wheel mounting brackets 172a, 172b may also be flipped (upside-down) to orient the axle receiving holes of the brackets above the side frame members, to position the rear wheel axles above the side frame members. The side frame members 170a, 170b include multiple longitudinally spaced mounting holes oriented to allow for mounting the rear wheel assemblies 171a, 171b in multiple longitudinal positions with respect to the side frame members 170a, 170b. Front caster wheel assemblies 173a, 173b are attached to the front ends mounting portions 174a, 174b(shown in the illustrated embodiment as flat, plate-like extensions) of the base guide frame members 130a, 130b by front caster brackets or caster journals 175a, 175b. The front end mounting portions 174a, 174b including multiple rows of mounting holes oriented to allow for mounting the front caster wheel assemblies 173a, 173b in multiple vertical positions with respect to the base guide frame members 130a, 130b, for example, to adjust the vertical position of the seat frame (e.g., by repositioning both front casters and rear wheels) or to adjust an angular position of the seat frame (e.g., by repositioning only the front casters). As shown, an upper mounting aperture in each caster mounting bracket 175a, 175b may be elongated and arcuate to permit adjustment of the angular orientation of the front caster wheel assemblies 173a, 173b to maintain a stem portion 176a, 176b of each front caster wheel assembly in a vertical orientation. An eccentric camming adjustment plate 177a, 177b may be assembled with a complementary shaped mounting aperture in each caster mounting bracket 175a, 175b, such that tightening of the corresponding bolt (extending through the adjustment plate) causes the adjustment plate to secure the caster wheel assembly in this vertical stem orientation.
According to still another aspect of the present application, a wheelchair may be providing with seat, arm, and cane attachment arrangements providing for adjustment of the seating area, arm supports, and canes on the seat frame, for example, with respect to the seat guide portions, to adjust the mass of the user on the chair to facilitate mobility and tilting. In an exemplary embodiment, an adjustable seat frame for a wheelchair includes a front cross member, a rear cross member longitudinally spaced from the front cross member, a longitudinally extending first side frame member mounted to a first end portion of each of the front and rear cross members by first front and rear mounting brackets, and a longitudinally extending second side frame member mounted to a second end portion of each of the front and rear cross members by second front and rear mounting brackets, the first and second side frame members defining a seating area. Each of the first and second side frame members is independently longitudinally adjustable with respect to the front and rear cross members.
In the illustrated embodiment, the seat frame 140 includes seat side frame members 180a, 180b attached to front and rear cross members 181, 182 (shown in the illustrated embodiment as cylindrical tubes) by front and rear seat mounting brackets 183a, 183b, 186a, 186b. The front mounting brackets 183a, 183b include C-clamp ends 184a, 184b sized to attach (e.g., using bolts or other fasteners) to tubular front ends of the side frame members 180a, 180b, and tubular extensions 185a, 185b (e.g., welded to a plate portion of the bracket) positioned to be telescopically received in the front cross member 181, and secured by bolts or other fasteners. The rear mounting brackets 186a, 186b include clamp ends 187a, 187b sized to attach (e.g., using bolts or other fasteners) to rail portions 188a, 188b attached (e.g., welded) to bottom surfaces of tubular rear ends of the side frame members 180a, 180b, and tubular extensions 189a, 189b (e.g., welded to a plate portion of the bracket) positioned to be telescopically received in the rear cross member 182, and secured by bolts or other fasteners.
As shown, the side frame members 180a, 180b may be independently longitudinally adjustable (e.g., to adjust seat and/or footrest positioning) by removing the fasteners attaching the clamp ends 184a, 184b, 187a, 187b to the side frame members, and sliding the side frame members to a selected longitudinal position in which selected mounting holes in the side frame members align with the mounting apertures in the clamp ends, and reinstalling the fasteners. In one embodiment, the clamp ends 184a, 184b, 187a, 187b may include a low friction coating or bearing insert to facilitate sliding adjustment of the side frame members, and to minimize marring of the sliding surfaces). The side frame members 180a, 180b may be independently laterally adjustable (e.g., to adjust a width of the seat frame for receiving a seating pan, not shown) by removing the fasteners attaching the tubular extensions 185a, 185b, 189a, 189b to the cross members 181, 182, and sliding the side frame members to a selected lateral position in which selected mounting apertures (not shown) in the tubular extensions align with mounting holes in the cross members, and reinstalling the fasteners.
According to another exemplary aspect of the present application, cylindrical tubular frame members used, for example, with a wheelchair may be adapted to include flatted cylindrical portions providing one or more flatted surfaces for more secure, rigid attachment of flat mounting plates, mounting brackets, or other such accessories, for example, by fasteners installed through aligned mounting holes in the flatted tubular member and the mountable accessory.
In an exemplary embodiment, an adjustable seat frame for a wheelchair includes a front cross member, a rear cross member longitudinally spaced from the front cross member, a longitudinally extending first side frame member mounted to a first end portion of each of the front and rear cross members, and including a cylindrical portion and a flatted cylindrical portion, a longitudinally extending second side frame member mounted to a second end portion of each of the front and rear cross members, the first and second side frame members defining a seating area, and including a cylindrical portion and a flatted cylindrical portion, a first mounting bracket having a C-clamp end portion attached to the cylindrical portion of one of the first and second side frame members, and a second mounting bracket having flat first and second side walls attached to the flatted cylindrical portion of one of the first and second side frame members.
A pair of handle canes 190a, 190b are attached to the rear end portions of the side frame members 180a, 180b by U-shaped mounting brackets 191a, 191b attached to the canes by fasteners through aligned mounting holes. The U-shaped brackets 191a, 191b include side walls 192a, 192b, 193a, 193c that extend over the sides of the side frame members with multiple mounting apertures for adjustable (e.g., vertically, angularly) attachment of the side walls to selected ones of the multiple mounting holes on the side frame members (e.g., for longitudinal adjustment). To provide more rigid attachment of the U-shaped brackets 191a, 191b to the side frame members 180a, 180b, the rear portions of the side frame members may be provided with flatted side portions 194a, 194b that extend along the lengths of the rear mounting portions of the side frame members, for flat mating contact between the bracket side walls 192a, 192b, 193a, 193b and the flatted side portions 194a, 194b. To allow for flatted side surfaces, tubing with a greater wall thickness may be used to allow for removal of material to form the flats. This maintains a cylindrical interior surface to facilitate telescoping attachment of other features where appropriate. As shown in the illustrated embodiment, central and forward portions of the side frame members 180a, 180b may maintain a cylindrical exterior surface, for example, to facilitate proper attachment of conventional seat pans, leg rests, and other accessories (not shown). While other frame members of the illustrated embodiment are shown as cylindrical tubes, in other embodiments, one or both sides of one or more of the other tube-shaped frame members may be flatted to provide similar rigid attachment to a bracket or other attaching portion.
According to another aspect of the present application, rear anti-tip leg assemblies, provided on a back end of a wheelchair to provide support for the chair in the event that the chair is unintentionally tipped rearward about the rear wheels, may be adapted to be adjustably positioned on the base frame for easy pivoting of the leg assembly out of the way of a caregiver pushing the wheelchair or for more compact stowing of the wheelchair.
In an exemplary embodiment, a base frame for a wheelchair includes a longitudinally extending side frame member, a rear wheel rotatable about an axle secured to a rear end portion of the side frame member, and an anti-tip leg assembly including a hollow base portion affixed to the rear end portion of the side frame member, rearward of the axle, a leg portion extending axially through the hollow base portion from a first end proximate the side frame member to a distal end having a ground engaging portion configured to support the wheelchair if the base frame is accidentally tipped rearward about the rear wheel. The leg portion is axially biased into a rotationally fixed position with the ground engaging portion in an anti-tip position. The first end of the leg portion is axially movable to a rotatable position to permit rotation of the leg portion for movement of the ground engaging portion to a disengaged position.
As shown, the exemplary anti-tip assembly 200 includes a tubular bent leg portion 204 that is telescopically received in the base portion 201, and a tubular caster carrying end portion 205 that telescopically receives a distal end of the bent leg portion 204. Multiple mounting holes in the distal end of the bent leg portion allow for primarily horizontal adjustment of the caster 206. To allow the anti-tip leg portion 204 to be flipped or rotated, for example, out of the way of a caregiver pushing the wheelchair, or toward the wheelchair frame to more easily stow the wheelchair, a hand or foot actuable plunger end 207 is fastened to a proximal end of the bent leg portion 204 (e.g., by a press fit roll pin 211), and the leg portion 204 is spring loaded (by internal spring 208) into a rotationally fixed position with the base portion 201, by engagement of a central through pin 209 in the bent leg portion 204 with a notch 210 in the base portion. To pivot the bent leg portion 204 out of the anti-tip position, the plunger end 207 is depressed to disengage the through pin 209 from the notch 210, and the plunger end (which may be flatted for easier grasping) is rotated to rotate the leg portion 204 to a withdrawn or disengaged position. If the bent leg portion is rotated to a disengaged position 180° from the anti-tip position, the leg portion may be released (by releasing the plunger end) for spring biased reengagement of the pin 209 with the notch 210.
While various inventive aspects, concepts and features of the inventions may be described and illustrated herein as embodied in combination in the exemplary embodiments, these various aspects, concepts and features may be used in many alternative embodiments, either individually or in various combinations and sub-combinations thereof. Unless expressly excluded herein all such combinations and sub-combinations are intended to be within the scope of the present inventions. Still further, while various alternative embodiments as to the various aspects, concepts and features of the inventions—such as alternative materials, structures, configurations, methods, devices and components, alternatives as to form, fit and function, and so on—may be described herein, such descriptions are not intended to be a complete or exhaustive list of available alternative embodiments, whether presently known or later developed. Those skilled in the art may readily adopt one or more of the inventive aspects, concepts or features into additional embodiments and uses within the scope of the present inventions even if such embodiments are not expressly disclosed herein. Additionally, even though some features, concepts or aspects of the inventions may be described herein as being a preferred arrangement or method, such description is not intended to suggest that such feature is required or necessary unless expressly so stated. Still further, exemplary or representative values and ranges may be included to assist in understanding the present disclosure; however, such values and ranges are not to be construed in a limiting sense and are intended to be critical values or ranges only if so expressly stated. Moreover, while various aspects, features and concepts may be expressly identified herein as being inventive or forming part of an invention, such identification is not intended to be exclusive, but rather there may be inventive aspects, concepts and features that are fully described herein without being expressly identified as such or as part of a specific invention. Descriptions of exemplary methods or processes are not limited to inclusion of all steps as being required in all cases, nor is the order that the steps are presented to be construed as required or necessary unless expressly so stated.
