Rollator

Abstract

The present disclosure provides a rollator comprising a retractable frame supported on a plurality of wheels, a seat supported on the frame, a pair of handlebars and a brake mechanism.

Description

Technical Field

[0001] The present disclosure relates to walking aids, and more particularly, to rollators. Background Art

[0002] Rollators facilitate an individual's ability to walk and move independently by providing stabilization, support, and / or relief to the individual's lower body. A typical rollator includes a frame supported on three to four wheels, handlebars, and a seat. There is a continuing need to improve the usability, transportability, and / or ease of use of rollators. Summary of the invention

[0003] According to the solution of the present disclosure, a rollator for assisting the mobility of a user is provided, and the rollator comprises: a left side frame; a right side frame coupled to the left side frame; a seat supported between the left side frame and the right side frame; a first handle assembly coupled to the left side frame; a second handle assembly coupled to the right side frame; a plurality of wheels supporting the left side frame and the right side frame; and a brake mechanism operably coupled to the first handle assembly or the second handle assembly. A first wheel of the wheels comprises: a hub having a lateral extension protruding from the hub; and a tire arranged around the hub. The brake mechanism comprises a brake pad configured to selectively engage the first wheel to prevent movement of the rollator along a surface.

[0004] In an aspect, the tire of the first wheel may include a lateral extension protruding from the tire. The lateral extension of the tire may be arranged around the lateral extension of the hub.

[0005] In aspects, the brake pad may be configured to selectively engage an outer peripheral surface of a laterally extending portion of the tire.

[0006] In aspects, the brake pad may be configured to engage an outer peripheral surface of a laterally extending portion of the tire in response to actuation of the brake mechanism.

[0007] In an embodiment, the lateral extension of the wheel hub may be a ring formed integrally with the wheel hub, and the lateral extension of the tire may be a ring formed integrally with the tire.

[0008] In the solution, the brake mechanism may further include: a brake handle that is movably coupled to the first handle assembly; and a flexible elongated element that extends between the brake handle and the brake pad and couples the brake handle to the brake pad. Actuation of the brake handle may move the brake pad between a first position and a second position. In the first position, the brake pad engages the first wheel. In the second position, the brake pad disengages the first wheel.

[0009] In aspects, the flexible elongate member may extend through the left side frame.

[0010] In aspects, the brake pad may be resiliently biased towards the second position.

[0011] In the solution, the brake handle can be configured to be moved out of a neutral position and toward a first fixed position or a second fixed position. In the neutral position, the brake pad is disengaged from the first wheel. In the first fixed position, the brake pad applies a first force on the first wheel, and in the second fixed position, the brake pad applies a second force on the first wheel that is greater than the first force.

[0012] In the scheme, when the brake handle is in the neutral position, the brake handle can move freely relative to the first handle assembly, and when the brake handle is in the first fixed position or the second fixed position, the movement of the brake handle relative to the first handle assembly can be prevented.

[0013] In an embodiment, the rollator may further include a folding mechanism connecting the left frame and the right frame to each other. The folding mechanism may be configured to transform the rollator between an expanded configuration and a collapsed configuration.

[0014] In the scheme, the folding mechanism may include a pair of first and second crossbars pivotably coupled to each other. Each of the first and second crossbars may have a first end and a second end. The second end of the first crossbar may be pivotably coupled to the left frame and the second end of the second crossbar may be pivotably coupled to the right frame, so that the pair of first and second crossbars pivot relative to each other to adjust the width defined between the left and right frames.

[0015] In an embodiment, the folding mechanism may further include: a first elongated support member coupled to a first end of the first crossbar; and a second elongated support member coupled to a first end of the second crossbar. The first elongated support member and the second elongated support member are together configured to support the seat thereon.

[0016] In the solution, the left side frame may have a protrusion extending inwardly therefrom, the protrusion of the left side frame being configured to support the first elongated support member when the folding mechanism is in the unfolded configuration. The right side frame may have a protrusion extending inwardly therefrom, the protrusion of the right side frame being configured to support the second elongated support member when the folding mechanism is in the unfolded configuration.

[0017] In an embodiment, the folding mechanism may further include a first cam link and a first surface feature. The first cam link may be pivotally coupled to the first end of the first crossbar and the left side frame, and the first surface feature may extend from the first end of the first crossbar. The first surface feature may be configured to lockably engage the first cam link when the folding mechanism is in the deployed configuration to selectively secure the folding mechanism in the deployed configuration.

[0018] According to another aspect of the present disclosure, a rollator for assisting the mobility of a user is provided, and the rollator includes: a left side frame; a right side frame; a folding mechanism that couples the left side frame and the right side frame to each other; a seat supported between the left side frame and the right side frame; a plurality of wheels that support the left side frame and the right side frame; and a brake pad that is movably coupled to the left side frame or the right side frame. The folding mechanism is configured to adjust a width defined between the left side frame and the right side frame. A first wheel of the wheels includes a hub having a lateral extension and a tire arranged around the hub. The tire has a lateral extension arranged around the lateral extension of the hub, and the brake pad is configured to selectively engage an outer peripheral surface of the lateral extension of the tire to prevent movement of the rollator along a surface.

[0019] In an aspect, the rollator may further include a brake handle operably coupled to the brake pad. The brake pad may be configured to selectively engage an outer peripheral surface of a laterally extending portion of the tire in response to actuation of the brake handle.

[0020] In the scheme, the folding mechanism may also include a pair of first and second crossbars that are pivotally connected to each other, a first slender support member, and a second slender support member. Each crossbar may have a first end and a second end. The second end of the first crossbar may be pivotally connected to the left frame and the second end of the second crossbar may be pivotally connected to the right frame, so that the pair of first and second crossbars pivot relative to each other to adjust the width defined between the left frame and the right frame. The first slender support member may be connected to the first end of the first crossbar, and the second slender support member may be connected to the first end of the second crossbar. The first slender support member and the second slender support member may be configured together to support the seat thereon.

[0021] As used herein, the terms parallel and perpendicular are understood to include substantially parallel and substantially perpendicular relative configurations up to approximately plus or minus 15 degrees from perfectly parallel and perfectly perpendicular.

[0022] As used herein, the term "approximately" means that the values ​​are close and small variations will not significantly affect the practice of the disclosed embodiments. When using numerical limitations, unless the context indicates otherwise, "approximately" means that the value can vary by ±10% and remain within the scope of the disclosed embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Embodiments of the present disclosure are described herein with reference to the accompanying drawings, in which:

[0024] Figure 1A is a front perspective view illustrating an exemplary embodiment of a rollator shown in a deployed or operational configuration;

[0025] Figure 1B for Figure 1A Rear perspective view of the rollator;

[0026] Figure 1C Shown in a collapsed or stowed configuration Figure 1A Front stereogram of the rollator;

[0027] Figure 2 is a perspective view illustrating a brake pad coupled to a wheel of the rollator of FIG. 1 ;

[0028] Figure 3 To illustrate the connection to the wheel Figure 2 An enlarged perspective view of a brake pad;

[0029] Figure 4 is a cross-sectional view of a wheel including a hub and a tire arranged around the hub;

[0030] Figure 5The figure shows a frame and wheels connected to the rollator. Figure 2 A perspective view of a detail of a brake mechanism of a brake pad;

[0031] Figure 6 A perspective view showing details of the brake mechanism alone;

[0032] Figure 7 Another perspective view showing the details of the brake mechanism separately;

[0033] Figure 8 is a rear view illustrating the brake handle of the rollator of FIG. 1 shown in various positions;

[0034] Fig. 9 is a front perspective view of the rollator of FIG. 1 illustrating a folding mechanism of the rollator with the seat removed;

[0035] Fig. 10A A front view of the cam link of the folding mechanism is shown in an unlocked state;

[0036] Fig. 10B is a front view of a cam link of a folding mechanism illustrating locking the folding mechanism in a deployed configuration; and

[0037] Fig.11 To illustrate the Fig. 9 A magnified view of the stent with the folding mechanism locked in the collapsed configuration. DETAILED DESCRIPTION

[0038] Embodiments of the presently disclosed rollator are described in detail with reference to the accompanying drawings, wherein like reference numerals designate identical or corresponding elements in each of the several views.

[0039] Reference Figures 1A to 1C , an exemplary embodiment of a rollator is illustrated and generally designated 100. The rollator 100 generally includes a left side frame 102 and a right side frame 104 coupled to the left side frame 102 by a folding mechanism 106 that enables the rollator 100 to be deployed in a deployed (or operational) configuration ( Figure 1A to Figure 1B ) and contraction (or storage) structure ( Figure 1C ). Each of the left frame 102 and the right frame 104 includes a rear leg 108, 112 having an upper end 108a and a lower end 108b, and a front leg 110, 114 having a lower end 110b and an upper end 110a fixed to the upper end 108a of the rear leg 108. The lower end 110b of each of the front legs 110, 114 has a wheel or wheel assembly 116, 118 rotatably coupled thereto, and the lower end 108b of each of the rear legs 108, 112 has a wheel 120, 122 coupled thereto.

[0040] The rollator 100 also includes a first (or left) handle assembly 124 coupled to the left side frame 102 and a second (or right) handle assembly 126 coupled to the right side frame 104. Each of the handle assemblies 124, 126 includes an axle 124a, 126a and a handlebar 124b, 126b extending to the rear side of the axle 124a. The axles 124a, 126a of the handle assemblies 124, 126 are slidably received in the upper ends 108a of the rear legs 108, 112 of the respective left and right side frames 102, 104 to allow the height of the handlebars 124a, 126a to be selectively adjusted relative to the frames 102, 104. A back support 128 can be attached to the axles 124b, 126b of the handle assemblies 124, 126 and extend forward therefrom. It is contemplated that the back support 128 can be coupled to other suitable locations of the rollator 100.

[0041] Reference Figures 2 to 4 , one or more of the wheels 116, 118, 120, 122, such as the left rear wheel 120, includes a hub 130 and a tire 132, which is fixed around the hub 130 to prevent the tire 132 from rotating relative to the hub 130. In an embodiment, the hub 130 can be made of a relatively rigid plastic, such as, for example, PVC or glass-filled nylon, and the tire 132 can be made of a more compliant material, such as, for example, rubber, PU or PVC. In an embodiment, the tire 132 can be overmolded to the outer periphery of the hub 130. The hub 130 has an annular body 130a and a ring or lateral extension 130b that protrudes laterally inward from the body 130a. The tire 132 has an annular body 132a and a ring or lateral extension 132b that protrudes laterally inward from the body 132a of the tire 132. In an embodiment, the entire hub 130 can be formed integrally and the entire tire 132 can be formed integrally. The body 132 a of the tire 132 surrounds the body 130 a of the hub 130 , and the ring 132 b of the tire 132 surrounds the ring 130 b of the hub 130 .

[0042] The rim 132b of the tire 132 has an outer peripheral surface 134 that is configured to engage with a brake pad 136 of the rollator 100 to prevent the rollator 100 from moving along a surface (e.g., the ground). Because the brake pad 136 is configured to engage the outer peripheral surface 134 of the ring 132b of the tire 132 rather than the ground-engaging body 132a of the tire 132, wear and / or tear of the ground-engaging body 132a is prevented. Additionally, in some cases, the ground-engaging outer surface of the tire 132 may have debris or liquid thereon, which may reduce the frictional engagement between the brake pad 136 and the tire 132. Thus, having the brake pad 136 engage the ring 132b of the tire 132 improves the functionality of the brake.

[0043] Reference Figures 5 to 8 The rollator 100 includes a brake mechanism 140 coupled to the rear leg 108 of the left side frame 102 and includes a brake pad 136, a brake handle 138 ( Figure 8 ) and a flexible longitudinal element 142, such as, for example, a brake cable interconnecting the brake pad 136 and the brake handle 138. In aspects, the brake mechanism 140 can be coupled to the front legs 110, 114 of either the left side frame 102 or the right side frame 104. In aspects, the rollator 100 can include a second brake mechanism coupled to the right side frame 104.

[0044] The brake mechanism 140 also includes a pivot rod 148, a biasing member 150, and a bracket 146 fixed to the outer side of the lower end 108b of the left rear leg 108. The pivot rod 148 extends transversely through the bracket 146 and the lower end 108b of the left rear leg 108 and is pivotally supported by the bracket 146. The pivot rod 148 has a first end 148a extending outside the frame 102 and a second end 148b disposed within the frame 102. The brake pad 136 can be configured as an angled tooth supported on the first end 148a of the pivot rod 148. In other aspects, the brake pad 136 can be configured as an elongated rubber pad (e.g., having a generally flat or arcuate tire engaging surface that extends generally the entire width of the rim 132b of the tire 132) that is configured to compress when engaging the wheel 120. The biasing member 150 may be a coil spring disposed between the second end 148b of the pivot rod 148 and the plate 152 and resiliently biases the pivot rod 148 toward a horizontal position in which the brake pad 136 is spaced apart from the wheel 120. In aspects, the brake pad 136 may be constructed of any suitable material, including the same material as the tire 132, such as, for example, rubber, plastic, or metal, and may have any suitable shape, such as, for example, round, flat, square, triangular, etc.

[0045] The brake cable 142 has an upper end 142a ( Figure 8 ) and the lower end 142b ( Figure 5 ). As such, the pivot lever 148 is configured to pivot in response to actuation of the brake handle 138 , thereby moving the brake pad 136 into and out of engagement with the wheel 120 .

[0046] Reference Figure 8, the brake handle 138 is disposed below the handlebar 124a and is pivotally coupled to a flange 154 of the left handle assembly 124, the flange 154 extending vertically downward relative to the handlebar 124a. The brake handle 138 is pivotally coupled to and received within the flange 154. Since the upper end 142a of the brake cable 142 is routed into and fixed to the brake handle 138, downward or upward actuation of the brake handle 138 causes the brake cable 142 to be pulled in an upward direction, thereby actuating the brake pad 136.

[0047] The brake handle 138 is supported in the flange 154 in the neutral position "N" and is configured to move from the neutral position "N" to the braking position "B". In the neutral position "N", the brake pad 136 ( Figure 5 ) is disengaged from the first wheel 120 and the brake handle 138 is free to pivot relative to the flange 154 toward the braking position "B", during which the brake pad 136 moves into engagement with the wheel 120. It is contemplated that due to the biasing member 150 ( Figure 6 ) is elastically biased, and when the user releases the brake handle 138, the brake handle 138 returns to the neutral position "N".

[0048] The user has the option of moving the brake handle 138 out of the neutral position "N" and into the first fixed position "F1" or the second fixed position "F2". To move the brake handle 138 out of the neutral position "N" and into the first fixed position "F1", the brake handle 138 is moved downward until a stop (not shown, such as a tongue) on the end of the brake handle 138 engages a corresponding stop (not shown, such as a groove) in the flange 154, thereby selectively fixing the brake handle 138 in the first fixed position "F1". In the first fixed position "F1", the brake pad 136 exerts a first force on the first wheel 120 sufficient to provide a low resistance to rotation of the wheel 120 to allow the rollator 100 to move slowly along a surface. To move the brake handle 138 into the second fixed position "F1", the brake handle 138 is moved further downward from the first fixed position "F1" until another stopper (not shown) on the brake handle 138 engages a stopper in the flange 154, thereby selectively fixing the brake handle 138 in the second fixed position "F2". In the second fixed position or parking position "F2", the brake pad 136 applies a second force on the first wheel 120 that is greater than the first force and is sufficient to prevent the wheel 120 from rotating. The flange 154 may include a brake adjustment knob 156 that is threadedly coupled to the flange 154 and fixed to the upper end 142a of the brake cable 142, so that rotation of the knob 156 adjusts the tension in the brake cable 142.

[0049] Reference Fig. 9 , Fig. 10A as well as Fig. 10B The folding mechanism 106 interconnects the left side frame 102 and the right side frame 104 and is configured to transform the rollator 100 between the deployed configuration and the collapsed configuration. The folding mechanism 106 includes a first pair of first and second cross bars 160, 162 pivotably coupled to each other, a second pair of third and fourth cross bars 164, 166 pivotably coupled to each other and longitudinally spaced apart from the first pair of first and second cross bars 160, 162, and a first and second elongated seat support 168, 170. The first pair of cross bars 160, 162 is pivotably coupled to the second pair of cross bars 164, 166 via a pivot pin extending through a central portion of each cross bar 160, 162, 164, 166. Since the first pair of cross bars 160, 162 are substantially similar or identical to the second pair of cross bars 164, 166, only the details of the first pair of cross bars 160, 162 will be described.

[0050] Each of the first crossbar 160 and the second crossbar 162 has a first end 160a, 162a and a second end 160b, 162b. The first ends 160a, 162a of the first crossbar 160 and the second crossbar 162 are freely movable relative to the frames 102, 104, while the second end 160b of the first crossbar 160 is pivotally coupled to the support bar 103 spanning between the rear legs 112 and the front legs 114 of the right frame 104, and the second end 162b of the second crossbar 162 is pivotally coupled to the support bar 105 spanning between the rear legs 108 and the front legs 110 of the left frame 102. In this way, the pair of first crossbars 160 and the second crossbar 162 pivot relative to each other to adjust the width defined between the left frame 102 and the right frame 104.

[0051] The folding mechanism 106 also includes a first cam link 180 coupled to the left side frame 102 and the first crossbar 160, a second cam link 182 coupled to the right side frame 104 and the second crossbar 162, a first surface feature 184 (e.g., a roller, a pin, etc.) extending from the first end 160a of the first crossbar 160, and a second surface feature 186 (e.g., a roller, a pin, etc.) extending from the first end 162a of the second crossbar 162. The cam links 180, 182 may present a generally arcuate configuration and the first cam link 180 has a first end 180a pivotably connected to the left side frame 102 and a second end 180b pivotably connected to the first end 160a of the first crossbar 160b. The first cam link 180 also includes an intermediate portion 180c defining a notch 183 therein that is configured to lockingly engage the first surface feature 184 when the fold mechanism 106 is in the deployed configuration to selectively secure the fold mechanism 106 in the deployed configuration.

[0052] The first elongated seat support 168 of the folding mechanism 106 is fixed to the first end 160a of the first crossbar 160, and the second elongated seat support 170 is fixed to the first end 162a of the second crossbar 162. The first elongated seat support 168 and the second elongated seat support 170 have a foldable seat 190 ( Figure 1A ). The elongated seat supports 168, 170 extend perpendicularly relative to the crossbars 160, 162 (e.g., parallel to the central longitudinal axis of the rollator 100). The left side frame 102 has a protrusion (not explicitly shown) extending inwardly therefrom that is configured to support the first elongated seat support 168 when the folding mechanism 106 is in the deployed configuration, while the right side frame 104 has a protrusion 192 ( Fig. 9 ), the protrusion 192 is configured to support the second elongated seat support 170 when the folding mechanism 106 is in the deployed configuration. It is contemplated that each of the elongated seat supports 168, 170 has opposite ends configured to be removably coupled to a basket 194 or bag ( Figure 1A ), so that the basket 194 can be attached to the front side or the rear side of the rollator 100. In other aspects, the basket 194 can be attached to the front side of the handlebar assemblies 124, 126.

[0053] Reference Fig. 9 and Fig.11The folding mechanism 106 may further include a bracket 196 having a first end 196a fixed to the fourth crossbar 166 adjacent to the middle portion of the fourth crossbar 166 and a second end 196b defining a C-shaped opening 198. The third crossbar 164 includes a pin 199 fixed to the middle portion thereof, the pin 199 being configured to be removably received in the C-shaped opening 198 of the bracket 196 when the folding mechanism 106 is in the collapsed configuration, thereby selectively maintaining the folding mechanism 106 in the collapsed configuration.

[0054] It will be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be interpreted as limiting, but merely as an example of various embodiments. Other modifications will be conceivable to those skilled in the art within the scope and spirit of the appended claims.

Claims

1. A rollator for assisting the mobility of a user, the rollator comprising: Left frame; a right side frame coupled to the left side frame; a seat supported between the left side frame and the right side frame; a first handle assembly coupled to the left side frame; a second handle assembly coupled to the right side frame; A plurality of wheels, which support the left frame and the right frame, wherein a first wheel of the plurality of wheels comprises: a wheel hub having a main body and a lateral extension projecting laterally inwardly from the main body; and a tire disposed around the wheel hub; and a brake mechanism operably coupled to at least one of the first handle assembly or the second handle assembly, wherein the brake mechanism includes a brake pad configured to selectively engage the first wheel to prevent movement of the rollator along a surface, The tire of the first wheel includes a lateral extension portion protruding from the tire and arranged around the lateral extension portion of the hub, and the brake pad is configured to selectively engage an outer peripheral surface of the lateral extension portion of the tire.

2. The rollator according to claim 1, wherein: The brake pad is configured to selectively engage an outer peripheral surface of a laterally extending portion of the tire in response to actuation of the brake mechanism.

3. The rollator according to claim 1, wherein: The lateral extension of the wheel hub is a ring formed integrally with the wheel hub, and the lateral extension of the tire is a ring formed integrally with the tire.

4. The rollator according to claim 1, wherein: The braking mechanism also includes: a brake handle movably coupled to the first handle assembly; and A flexible elongated member extends between and couples the brake handle and the brake pad such that actuation of the brake handle moves the brake pad between a first position in which the brake pad engages the first wheel and a second position in which the brake pad disengages the first wheel.

5. The rollator according to claim 4, wherein: The flexible elongated member extends through the left side frame.

6. The rollator according to claim 4, wherein: The brake pad is resiliently biased toward the second position.

7. The rollator according to claim 4, wherein: The brake handle is configured to be moved from a neutral position in which the brake pad is disengaged from the first wheel, and toward a first fixed position or a second fixed position in which the brake pad applies a first force on the first wheel that is greater than the first force.

8. The rollator according to claim 7, wherein: When the brake handle is in the neutral position, the brake handle is free to move relative to the first handle assembly, and when the brake handle is in the first fixed position or the second fixed position, movement of the brake handle relative to the first handle assembly is blocked.

9. The rollator according to claim 1, further comprising a folding mechanism connecting the left frame and the right frame to each other, wherein: The folding mechanism is configured to transition the rollator between an expanded configuration and a collapsed configuration.

10. The rollator according to claim 9, wherein: The folding mechanism includes a pair of first and second cross bars that are pivotally connected to each other and have first and second ends respectively, the second end of the first cross bar being pivotally connected to the left frame and the second end of the second cross bar being pivotally connected to the right frame, so that the pair of first and second cross bars are pivotally rotated relative to each other to adjust the width defined between the left frame and the right frame.

11. The rollator according to claim 10, wherein: The folding mechanism also includes: a first elongated support member coupled to a first end of the first crossbar; and A second elongated support member is coupled to the first end of the second crossbar, the first elongated support member and the second elongated support member together being configured to support the seat thereon.

12. The rollator according to claim 11, wherein: The left side frame has a protrusion extending inwardly therefrom, the protrusion of the left side frame being configured to support the first slender support member when the folding mechanism is in the unfolded configuration, and the right side frame has a protrusion extending inwardly therefrom, the protrusion of the right side frame being configured to support the second slender support member when the folding mechanism is in the unfolded configuration.

13. The rollator according to claim 12, wherein: The folding mechanism also includes: a first cam link pivotably coupled to a first end of the first crossbar and the left side frame; and A first surface feature extends from the first end of the first crossbar and is configured to lockingly engage the first cam link when the fold mechanism is in the deployed configuration to selectively secure the fold mechanism in the deployed configuration.

14. A rollator for assisting the mobility of a user, the rollator comprising: Left frame; right frame; a folding mechanism that couples the left side frame and the right side frame to each other and is configured to adjust a width defined between the left side frame and the right side frame; a seat supported between the left side frame and the right side frame; A plurality of wheels, which support the left frame and the right frame, wherein a first wheel of the plurality of wheels comprises: a wheel hub having a main body and a lateral extension projecting laterally inwardly from the main body; and a tire disposed about the hub, the tire having a lateral extension disposed about a lateral extension of the hub; and A brake pad is movably coupled to the left or right frame and is configured to selectively engage an outer peripheral surface of a laterally extending portion of the tire to prevent movement of the rollator along a surface.

15. The rollator of claim 14, further comprising a brake handle operably coupled to the brake pad, wherein: The brake pad is configured to selectively engage an outer peripheral surface of a laterally extending portion of the tire in response to actuation of the brake handle.

16. The rollator according to claim 14, wherein: The lateral extension of the wheel hub is a ring formed integrally with the wheel hub, and the lateral extension of the tire is a ring formed integrally with the tire.

17. The rollator according to claim 14, wherein: The folding mechanism comprises: a pair of first and second cross bars pivotably coupled to each other and having first and second ends, respectively, the second end of the first cross bar pivotably coupled to the left frame and the second end of the second cross bar pivotably coupled to the right frame, such that pivoting of the pair of first and second cross bars relative to each other adjusts a width defined between the left frame and the right frame; a first elongated support member coupled to a first end of the first crossbar; and A second elongated support member is coupled to the first end of the second crossbar, the first elongated support member and the second elongated support member together being configured to support the seat thereon.

18. The rollator according to claim 17, wherein: The left side frame has a protrusion extending inwardly therefrom, the protrusion of the left side frame being configured to support the first slender support member when the folding mechanism is in the deployed configuration, and the right side frame has a protrusion extending inwardly therefrom, the protrusion of the right side frame being configured to support the second slender support member when the folding mechanism is in the deployed configuration.

19. The rollator according to claim 18, wherein: The folding mechanism also includes: a first cam link pivotably coupled to a first end of the first crossbar and the left side frame; and A first surface feature extends from the first end of the first crossbar and is configured to lockingly engage the first cam link when the fold mechanism is in the deployed configuration to selectively secure the fold mechanism in the deployed configuration.

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