Mobile carrier unit

Abstract

The present disclosure is directed to a mobile carrier unit (2000) for the supporting a utility module (3001), a carrier frame (2015) compatible for interlocking engagement in a detachable manner with at least one utility module (3001), the carrier frame comprising: a base frame (2001) and a handle frame (2002) pivotally coupled to and extending vertically from the base frame in a state of use of the mobile carrier unit, wherein the handle frame being structured to be selectively operable to an unfolded condition and a folded condition relative to the base frame.

Description

[0001] MOBILE CARRIER UNIT

[0002] TECHNOLOGICAL FIELD

[0003] The present disclosure is directed to a mobile carrier unit for detachably supporting a utility module.

[0004] The term mobile carrier unit is used hereinafter in its broad meaning and is meant to denote a variety of configurations, such as handcarts, load skates, load dolly, stair climber, harbor freight, etc. Further, the term utility module is used hereinafter in its broad meaning and is meant to denote a variety of articles, such as storage containers, travel luggage, tool caddy or boxes, organizers, compacted work benches, cable storage, tools including hand tools, power generators, and power sources, communication modules, carrying platforms, locomotion platforms, etc.

[0005] BACKGROUND

[0006] Hand trucks are well known in the art. These can be generally categorized into several categories, depending on the nature of load they are expected to transfer. One type of hand trucks is the so-called “L-shaped hand truck”, comprising a frame with one or more handles at one end, and wheels on the other end, and a short nose-plate (also referred to as a toe-plate or a ledge) configured for supporting a load underneath. L-shaped hand trucks are available also in several foldable versions, wherein the wheels and / or the ledge are foldable. Another type of hand trucks is the so-called “convertible hand truck”, convertible between at least an upright position and a horizontal position, with two or four wheels, suited for handling respective large / heavy loads. Other types of hand trucks are referred to as “specialty hand trucks” and are typically designed with special load engaging arrangements (e.g. a barrel grip, a fork nose, and the like). However, structure of conventional hand trucks cannot be folded into a smaller size when not in use. It takes too much floor space and is difficult to store. GENERAL DESCRIPTION

[0007] A first aspect of the disclosure concerns a mobile carrier unit configured for detachably receiving and supporting a utility module. The mobile carrier unit of the disclosure detachably supports at least one utility module. The mobile carrier unit includes a carrier frame compatible for interlocking engagement in the detachable manner with the at least one utility module, the carrier frame comprising a base frame, a handle frame pivotally coupled to and extending vertically from the base frame in a state of use of the mobile carrier unit, wherein the handle frame being structured to be selectively operable to an unfolded condition and a folded condition relative to the base frame, the handle frame includes a pair of elongated bars.

[0008] The term ‘at least one utility module ’ as used herein denotes any utility module that may be detachably secured to the mobile carrier unit. The at least one utility module may comprise one utility module, two utility modules, three utility modules or even more, based on the requirement and configuration of the mobile carrier unit.

[0009] According to some embodiments, the base frame comprises a pair of support channels, at least a portion of each of the pair of support channels extending vertically and remaining portion of each of the pair of support channels extending horizontally in use condition of the mobile carrier unit.

[0010] According to some embodiments, each of the pair of support channels is substantially L-shaped configuration, and cross-section of the pair of support channels is at least one of C-section or U-section.

[0011] According to some embodiments, the base frame is configured to receive and support a mounting plate, the mounting plate being defined with at least one (i.e. one or more) male connectors or at least one (i.e. one or more) female connectors for interlocking engagement in a detachable manner with the at least one utility module, the mounting plate being defined with a storage compartment.

[0012] By some embodiments, the storage compartment is configured to receive the at least one utility module.

[0013] According to some embodiments, the storage compartment is a charging dock.

[0014] According to some embodiments, the handle frame includes a pair of elongated columns spaced apart from one another, at least a portion of each of the pair of elongated columns is received by, and pivotally coupled to, at least one of the pair of support channels. According to some embodiments, the mobile carrier unit comprises a locking module configured on the support member, the locking module being adapted to selectively lock and release the handle frame from the unfolded condition to the folded condition relative to the base frame.

[0015] By some embodiments, the locking module includes a locking bar disposed on the support member, a locking latch defined at either ends of the lock bar, the locking latch being configured to selectively engageable with a locking member associated with the base frame and the handle frame, a release lever coupled to the lock bar. The release lever, when actuated, operates the locking latch at either ends of the lock bar, between a lock position and an unlock position.

[0016] By some embodiments, the locking latch is spring biased towards the lock position.

[0017] According to some embodiments, in the unfolded condition of the handle frame, the locking latch is engaged with the locking member to arrest the pivotal displacement of the handle frame relative to the base frame.

[0018] By some embodiments, the handle frame is displaceable to the folded condition by operating the release lever, which, in turn, operates the locking latch to the unlock position from the lock position.

[0019] According to some embodiments, the release lever is a foot lever.

[0020] By some embodiments, the locking member is at least one of a bar, a retention pin, or a rod connected to each of the handle frame’s elongated columns.

[0021] According to some embodiments, wherein each of the handle frame’s elongated columns is a telescopic column, having a multi-stage telescopic section adjustable between varying heights. By some such embodiments, one end of each of the multi-stage telescopic sections is ingressed into the telescopic column and an opposite end is defined within said handle, the multistage telescopic section being operable between an extended condition and a retracted condition.

[0022] By some embodiments, the multi-stage telescopic section is operable between the extended condition and the retracted condition by a press-button. In some such embodiments, the press-button is disposed on a cross member and is operatively coupled to the multi-stage telescopic section. According to some embodiments, the multi-stage telescopic section is operable between the extended condition and the retracted condition by at least one actuator upon operating the press-button.

[0023] By some embodiments, the press-button is disposed on the cross member and is operatively coupled to the multistage telescopic section.

[0024] According to some embodiments, the handle frame is partially received in the base frame.

[0025] According to some embodiments, the base frame is fitted with a locomoting arrangement.

[0026] By some embodiments, the handle frame is selectively pivotable between the unfolded condition and the folded condition relative to the base frame by at least one actuator.

[0027] Another aspect of the disclosure provides a mobile carrier unit comprising a carrier frame compatible for interlocking engagement in a detachable manner with at least one utility module, the carrier frame includes a base frame, a pair of telescopic columns pivotally coupled to and extending vertically from the base frame in a state of use of the mobile carrier unit, the pair of telescopic columns being structured to be selectively operable between an unfolded condition and a folded condition relative to the base frame.

[0028] Another aspect of the disclosure provides a utility assembly including at least one utility module and a mobile carrier unit configured to detachably support the at least one utility module.

[0029] Any one or more of the following features, designs, and configurations, can be implemented in the mobile carrier unit, according to the present disclosure, individually or in various combinations thereof:

[0030] • The mobile carrier unit can be a hand truck configured with a male / female coupler to detachably receive the at least one utility module.

[0031] • The mobile carrier unit can be a load dolly.

[0032] • The mobile carrier unit can be a load skates.

[0033] • The mobile carrier unit can be a stair climber.

[0034] • The mobile carrier unit can be a harbor freight. • The utility module can be a container modulef

[0035] • The utility assembly can be a container assembly or a tool caddy.

[0036] • The mobile carrier unit can be coupled with locomoting arrangement.

[0037] Examples of the utility modules can be any one or more of a cooler box, a workpiece grip, a power supply (e.g. power bank, generator), hand tools, power tools, a locomotive platform (e.g. a work dolly), powered or not, a tactical unit (e.g. military gear, scientific equipment, communications equipment, personal gear, outdoor gear, etc.).

[0038] BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to better understand the subject matter that is disclosed herein and to exemplify how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

[0040] Fig- 1 is a front view of a mobile carrier unit in unfolded condition, in accordance with an embodiment of the present disclosure, with a utility module attached thereto;

[0041] Fig- 2 is a perspective view of the mobile carrier unit in unfolded condition for detachably supporting at least one utility module;

[0042] Fig. 3A is a perspective skeletal view of the mobile carrier unit of Fig. 1;

[0043] Fig. 3B is a close-up view of detail D in Fig. 3 A;

[0044] Fig. 4 is a perspective view of a mobile carrier unit of Fig. 1 in folded condition;

[0045] Fig- 5 is a perspective view of a mounting plate of the mobile carrier unit with a locking module;

[0046] Fig. 6 is a perspective view of the mounting plate of Fig. 5, depicting a support bar and a locking module;

[0047] Fig. 7 is a perspective view of the locking module associated with the mobile carrier unit, depicting a locking latch locking a locking member; and

[0048] Fig. 8 is a perspective view of the locking module associated with the mobile carrier unit depicting locking member release from the locking latch and locking member associated with the mobile carrier unit. DETAILED DESCRIPTION OF EMBODIMENTS

[0049] Shown in Fig. 1, is a mobile carrier unit 2000, adapted to detachably receive and support at least one utility module 3001 forming the utility assembly 3000. The utility module can be of any type, shape, or size. The utility module may be referred to as a container, however the term utility module should be understood in its broad sense, including, without limitation, containers, toolboxes, organizers, transportation dollies, racks and mounts, tools, pieces of equipment and machinery.

[0050] A mobile mounting and carrying assembly in accordance with various implementations or configurations is shown in Figs. 2-8. The mobile mounting and carrying assembly may be referred to as the mobile carrier unit 2000 and will be used henceforth. The term carrier unit as used herein denotes any kind of a push / pull cart, a propelled cart configured for detachably attaching and carrying load. The carrier unit may be a hand cart, a mobile tool cart, a mobile workshop, travelling luggage cart, a trolley, etc.

[0051] The mobile carrier unit 2000 includes a carrier frame 2015 as seen in Figs. 3A- 3B. The carrier frame 2015 may extend with a defined length, width and height. The dimension of the carrier frame 2015 may vary based on the application of the mobile carrier unit 2000 and may be configured accordingly. The carrier frame 2015 may be a hollow frame adapted to receive and accommodate one or more components (not described in detail herein). The carrier frame 2015 can, alternatively, be a solid frame.

[0052] The carrier frame 2015 as described in the present disclosure may have a variety of configurations of which two configurations may be elucidated hereafter. Although two configurations are elucidated, the same should not be construed as a limitation of the present disclosure, as a person skilled in the art with the teachings of the present disclosure may make inconsequential / insignificant modifications and such modifications are construed to be within the purview of the present disclosure.

[0053] The carrier frame 2015 includes a base frame 2001, a handle frame 2002 that may be pivotally coupled to and may extend vertically (in use condition of the mobile carrier unit 2000) from the base frame 2001. The base frame 2001 includes a pair of support channels 2001a and 2001b, best seen in Fig. 3 A' . Each of support channels 2001a and 2001b is oriented horizontally, i.e. substantially parallel to ground (in use condition). The base frame 2001 has substantially an L-shaped configuration. Each of the support channels 2001a and 2001b is substantially L-shaped with a substantially larger section being parallel to the ground. A substantially smaller section of the support channels 2001a and 2001b typically extends substantially upwardly, perpendicular to the substantially larger section.

[0054] Each of the support channels 2001a and 2001b of the base frame 2001 can have a C-shaped cross-section, a U-shaped cross-section, or any other cross-sectional shape. The base frame 2001 can be adapted to receive and support a mounting plate 2005 as shown in Figs. 1-2.

[0055] Mounting plate 2005 is defined by a first major surface 2005a and a second major surface 2005b. The first major surface 2005a of the mounting plate 2005 faces the ground and the second major surface 2005b of the mounting plate 2005 faces away from the ground in use state of the mobile carrier unit 2000. The substantially longer section of the each of the support channels 2001a and 2001b of the base frame 2001 may be engaged in the mounting plate 2005. The base frame 2001 is typically engaged with the mounting plate 2005 to improve the structural rigidity of the mounting plate 2005. The mounting plate 2005 comprise at least one male connector or at least one female connector (not shown explicitly) for interlocking engagement in a detachable manner with the at least one utility module 3001.

[0056] The mounting plate 2005 can include a storage compartment 2013. The storage compartment 2013 is defined in an extension plate 200a (best seen in Figs. 2 and 5) extending upwardly from the mounting plate 2005, where the base frame 2001 and the handle frame 2002 are pivotally coupled. The extension plate 200a may be an integral part of the mounting plate 2005, or can be secured to the mounting plate 2005.

[0057] The storage compartment 2013 may be configured to receive the at least one utility module 3001, for example a tool caddy, a container, or any other suitable utility module. In an embodiment, the storage compartment 2013 may be configured as a charging dock, adapted to hold battery modules and / or dock the battery modules for charging.

[0058] The substantially smaller section of each of the support channels 2001a and 2001b extends through the extension plate 200a as shown in Fig. 2. The extension plate 200a associated with the mounting plate 2005 is defined with a plurality of through-holes on either side of the storage compartment 2013. The through-holes may be adapted to receive the smaller section of the support channels 2001a and 2001b. As noted, the mobile carrier unit 2000 includes a handle frame 2002 which extends upwardly and substantially vertically from the base frame 2001 (in use condition). The handle frame 2002 is typically pivotally coupled to the base frame 2001 and may be structured to be operable between an unfolded condition, shown in Fig. 2, and a folded condition, shown in Fig. 4. The handle frame 2002 is displaceable between the unfolded condition and the folded condition manually, by pressing on at least one actuator. The handle frame 2002 includes a pair of elongated columns 2003a and 2003b, each ingressed into a corresponding channel of the substantially smaller section of support channels 2001a and 2001b. The handle frame 2002 is pivotally coupled to the base frame 2001, in this specific example by a pivotal pin. However, any other suitable mechanism that can be employed to pivotally connect the handle frame 2002 and the base frame 2001 should be construed within the scope of the present disclosure.

[0059] One or more locking members 2014 (Figs. 7-8) are associated with the handle frame 2002, typically disposed proximal to the smaller section of the support channels 2001a and 2001b. The locking member 2014 may be a bar, a retention pin or a rod connected to each of the handle frame 2002. An end of the handle frame 2002 opposite to the end pivotally coupled to the support channels 2001a and 2001b is connected with a handle 2006, which may be used by an operator to operate the mobile carrier unit 2000.

[0060] The handle frame 2002 may be a unitary module having a defined length, with the elongated columns 2003a and 2003b having a defined length. In another arrangement, the handle frame 2002 includes telescopic columns 2003.

[0061] Each of the telescopic columns 2003 are pivotally coupled, at one end thereof, to a corresponding support channel of the pair of support channels 2001a and 2001b. At their opposite ends, telescopic columns 2003 are configured to receive a multi-stage telescopic section 2004. The multi-stage telescopic sections 2004 are adjustable between varying height, and operable between an extended condition and a retracted condition (not explicitly shown), typically by pressing onto a press-button 2007. The press-button 2007 is disposed on a cross member 2018 of the handle frame 2002. The press-button 2007 is operatively coupled to the multi-stage telescopic sections 2004 and operated to displace the multi-stage telescopic section between the extended condition and the retracted condition. As seen in Fig. 3B, an axial pin AP is provided in the cross member 2018 and operatively coupled the press-button 2007 and being selectively engageable or from the multi-stage telescopic section 2004. The axial pin AP is axially displaceable upon operation of the press-button 2007 to engage with the multi-stage telescopic section 2004 to displace the movement of the multi-stage telescopic section between the extended condition and the retracted condition.

[0062] The mobile carrier unit 2000 includes a locking module 2010 (Figs. 7-8) configured between a support member 2016 (Figs. 5-6) and a base frame 2001. A portion of the support member 2016 is secured to the base frame 2001 by the locking module, and remaining portion of the support member 2016 is secured to the extension frame of the mounting plate 2005. A space is defined between the base frame 2001 and the support member 2016, the space configured to receive the locking module 2010. The locking module 2010 is configured to selectively engage and disengage with the locking member 2014 configured in the handle frame 2002 to selectively lock and release the handle frame from the unfolded condition to the folded condition.

[0063] The locking module 2010 includes a lock bar 2017, operatively disposed in a space defined between the support bar 2016 and the base frame 2001. Further, the locking module 2010 includes a locking latch 2011 provided at either ends of the support bar 2016 or configured to engage with the locking member 2014 associated with the handle frame 2002. A release lever 2009 is operatively coupled to the locking latch 2011 through the lock bar 2017, and selectively operated the locking latch 2011 between a lock position and an unlock position. The locking latch 2011 is adapted to selectively lock and release (also referred to as engage and disengage, respectively) with the locking member 2014 associated with handle frame 2002. In the unfolded condition, the locking latch 2011 is engaged with the locking member 2014 to arrest the movement of the handle frame 2002 relative to the base frame 2001, as seen in Fig. 7.

[0064] Fig. 8 depicts the locking member 2014 disengaged from the locking latch 2011. To displace the handle frame 2002 to the folded condition from the unfolded condition, the release lever 2009 may be operated.

[0065] The base frame 2001 is provided with a locomoting arrangement 2012, e.g. wheels, operatively coupled to either ends of the base frame 2001 to provide locomotion to the frame 2002. In some examples, locomoting arrangement may be a motorized or propelled arrangement.

[0066] The release lever 2009 may be a lever that is operated manually to displace the locking latch 2011 between the lock position and the unlock position. In another configuration, the release lever 2009 may be a foot-operated lever. The release lever 2009 may be operated to displace the locking latch 2011 of the locking module 2010 from the lock position to the unlock position. The locking latch 2011 engaged with the locking member 2014 in the lock position is pivotally downwardly movable upon operation of the release lever 2009. Displacement of the locking latch 2011 from the lock position to the unlock position releases the locking member 2014, in turn enabling the handle frame 2002 to displace from the unfolded condition to the folded condition. As the locking latch 2011 is configured to be spring biased, upon releasing the release lever 2009 the locking latch 2011 displaces from the unlock position to the lock position.

[0067] A resilient member (not explicitly shown) may be disposed between the support member 2016 and the lock bar 2017. The resilient member may be integrally defined with the lock bar 2017, such as, but not limiting to, a resilient flap extending from the lock bar. In another example, the resilient member may be a torsional spring, or a bellow. Any other suitable resilient members may also be employed to spring bias the locking latch 2011 from the unlock position to the lock position without deviating from the scope of the present disclosure.

[0068] The handle frame 2002 is displaceable from the folded condition to the unfolded condition, and may be locked at the unfolded condition by the locking latch 2011. During the displacement of the handle frame 2002 to the unfolded condition, the locking member 2014 associated with the handle frame 2002 glides over the locking latch 2011, to partially displace the locking latch 2011 from the lock position to the unlock position. Upon displacing the handle frame 2002 to the unfolded position completely, the locking latch 2011 reverts to the lock position, thereby locking the locking member 2014 and locking the handle frame 2002 in the unfolded condition, while and restricting the pivotal displacement of the handle frame.

[0069] The utility module 3001 is detachably secured to the mobile carrier unit 2000, i.e. detachably engageable with the mounting plate 2005. As noted, the mounting plate 2005 is configured with at least one male connector or at least one female connector, that are adapted to receive a corresponding coupling member defined in the utility module 3001. For instance, the mounting plate 2005 may be defined with the female connectors which are configured to receive the corresponding male connectors on the utility module 3001.

[0070] The configuration of the mobile carrier unit 2000 ensures that the mobile carrier unit can be stored in a substantially smaller space as the handle frame 2002 and the base frame 2001 are displaceable to the unfolded and the folded conditions. The folding mechanism employed is simple and requires less maintenance. Also, the base frame 2001 of the mobile carrier unit 2000 may also be adapted to provide structural rigidity to the mounting plate 2005 on which the utility module 3001 may be detachably connected. For the purposes of promoting an understanding of the principles of the disclosure, reference has been made to specific embodiments illustrated in the drawings and specific language has been used to describe the same. For instance, in the description, the plurality of female connectors are considered to be defined on the carrier frame (in particular the on the cross member) and in some cases on the handle of the mobile carrier unit and the one or more male connectors are defined on the body of the at least one utility module. It should be appreciated that similar configuration of the engagement members i.e. the plurality of female connectors and the one or more male connectors can be interchangeably provided. That is the plurality of female connectors may be provided over the body of the at least one utility module and the one or more male connectors may be configured in the carrier frame of the mobile carrier unit. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended, such alterations and further modifications in the illustrated methods, and such further applications of the principles of the disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the disclosure pertains.

Claims

CLAIMS:

1. A mobile carrier unit comprising: a carrier frame compatible for interlocking engagement in a detachable manner with at least one utility module, the carrier frame comprising: a base frame, and a handle frame pivotally coupled to and extending vertically from the base frame in a state of use of the mobile carrier unit, wherein the handle frame being structured to be selectively operable to an unfolded condition and a folded condition relative to the base frame.

2. The mobile carrier unit of claim 1, wherein the base frame includes a pair of support channels, at least a portion of each the pair of support channels extending vertically and remaining portion of each of the pair of support channels extending horizontally in the state of use of the mobile carrier unit.

3. The mobile carrier unit of claim 2, wherein each of the pair of support channels is of substantially L shaped configuration.

4. The mobile carrier unit of claim 1, wherein cross-section of each of the pair of support channels is at least one of C-section or U-section.

5. The mobile carrier unit of claim 1, wherein the base frame being configured to receive and support a mounting plate.

6. The mobile carrier unit of claim 5, wherein the mounting plate being defined with at least one of one or male connectors or one or more female connectors for interlocking engagement in a detachable manner with the at least one utility module.

7. The mobile carrier unit of claim 5, wherein the mounting plate being defined with a storage compartment.

8. The mobile carrier unit of claim 7, wherein the storage compartment is a charging dock.

9. The mobile carrier unit of claim 1, wherein the handle frame includes a pair of elongated columns spaced apart from one another.

10. The mobile carrier unit of any one of the previous claims, wherein at least a portion of each of the pair of elongated columns is received by and pivotally coupled to at least one of the pair of support channels.

11. The mobile carrier unit of any one of the previous claims comprises a support member secured to the base frame.

12. The mobile carrier unit any one of the previous claims 1 comprises a locking module configured on the support member, the locking module being adapted to selectively lock and release the handle frame from the unfolded condition to the folded condition relative to the base frame.

13. The mobile carrier unit of claim 12, wherein the locking module includes: a lock bar operatively disposed on the support member; a locking latch coupled to either ends of the lock bar, the locking latch being configured to be selectively engageable with a locking member associated with the handle frame; and a release lever coupled to the lock bar, the release lever when actuated operates the locking latch at either ends of the lock bar between a lock position and an unlock position.

14. The mobile carrier unit of any one of previous claims, wherein the locking latch is spring biased towards the lock position.

15. The mobile carrier unit of any one of the previous claims, wherein in the unfolded condition of the handle frame, the locking latch being engaged with the locking member to arrest the pivotal displacement of the handle frame relative to the base frame.

16. The mobile carrier unit of any one of the previous claims, wherein the handle frame is displaceable to the folded condition by operating the release lever which in turn operates the locking latch to the unlock position from the lock position.

17. The mobile carrier unit of claim 13, wherein the release lever is a foot lever.

18. The mobile carrier unit of claim 13, wherein the locking member is at least one of a bar, a retention pin or a rod associated to each of the handle frame.

19. The mobile carrier unit of any one of the previous claims, wherein each of the pair of elongated columns is a telescopic column, each having a multi-stage telescopic section adjustable between varying height, one end of the multi-stage telescopic section is ingressed into the telescopic column and an end opposite to the one end is defined with a handle.

20. The mobile carrier unit of any one of the previous claims, wherein the multistage telescopic section is operable between an extended condition and a retracted condition.

21. The mobile carrier unit of any one of the previous claims, wherein the multistage telescopic section is operable between the extended condition and the retracted condition by a press button, the press button is disposed on a cross member and is operatively coupled to the multi-stage telescopic section.

22. The mobile carrier unit of claim 1, wherein base frame is fitted with a locomoting arrangement.

23. The mobile carrier unit of claim 1, wherein the at least one utility module detachably connected to the mobile carrier unit is a container, a container assembly, a tool caddy, travel luggage, organizers, compacted work benches, cable storage, tools, communication modules, carrying platforms, locomotion platform, and battery modules.

24. The mobile carrier unit of claim 1, wherein the handle frame being pivotable selectively between the unfolded condition and the folded condition relative to the base frame by at least one actuator.

25. The mobile carrier unit of claim 19, wherein the multi-stage telescopic section is operable between the extended condition and the retracted condition by at least one actuator upon operating the switch, the switch is disposed on the cross member and is operatively coupled to the multi-stage telescopic section.

26. A mobile carrier unit comprising: a carrier frame compatible for interlocking engagement in a detachable manner with at least one utility module, the carrier frame comprising: a base frame; a pair of telescopic columns pivotally coupled to and extending vertically from the base frame in a state of use of the mobile carrier unit, wherein the pair of telescopic columns being structured to be selectively operable to an unfolded condition and a folded condition relative to the base frame.

27. The mobile carrier unit of claim 26, wherein each of the pair of telescopic columns includes a multi-stage telescopic section, wherein, one end of each of the pair of elongated columns is adjustable between varying height, one end of the multi-stage telescopic section is ingressed into the telescopic column and an end opposite to the one end is defined with a handle.

28. The mobile carrier unit of claim 26, wherein the multi-stage telescopic section is operable between an extended condition and a retracted condition.

29. The mobile carrier unit of claim 25, wherein the multi-stage telescopic section is operable between the extended condition and the retracted condition by a press- button, the press-button is disposed on the cross member and is operatively coupled to the multi-stage telescopic section.

30. A utility assembly, comprising: at least one utility module; and a mobile carrier unit of at least one of claims 1 and 25 being configured to detachably support the at least one utility module.

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