Modular backpack system

Abstract

A modular backpack system comprises a modular travel frame with telescoping extension bars having rotating arms configured to attach various travel accessories. The system includes shoulder straps with integrated attachment devices for hands-free carrying of accessories including cellular phone holders, umbrellas, and tumbler holders. Each telescoping extension bar extends to multiple locked positions and includes a rotating arm with attachment openings for detachable clips, bag holders, and luggage extenders. The bag holders and luggage extenders include release mechanisms and depressor buttons configured to interface with luggage handle buttons, allowing free movement of extendable luggage handles during parallel rolling and automatic locking during towing positions. The system accommodates a detachable travel pack via mating buckle parts, forming an integrated backpack system with compartments and pockets. Shoulder straps include reinforcement plates, USB ports, and power bank pockets for electronic device connectivity.

Description

Modular Backpack SystemClaim to Priority and Cross — Reference to Related Applications

[0001] This application claims priority to provisional patent application serial number 63 / 716,354, titled “Hands Free Backpack,” and filed on November 5, 2024. This application also claims priority to design patent application serial number 30 / 003,558, titled “Hands-Free Separable Backpack” filed on May 13, 2025.Background

[0002] Modern travelers frequently carry multiple bags, accessories, and electronic devices, creating challenges in managing and transporting these items efficiently while maintaining mobility and comfort. Traditional backpacks provide limited options for organizing and accessing travel accessories, often requiring users to hold items in their hands or struggle with cumbersome attachment systems.

[0003] Conventional travel systems typically consist of separate, incompatible components that cannot be easily reconfigured based on changing travel needs. For example, a traveler may need a large capacity system for initial transport, but prefer a smaller, lighter configuration for daily activities at their destination. Existing backpack designs do not provide the flexibility to separate into multiple functional units while maintaining the ability to carry accessories hands-free.

[0004] Additionally, current luggage management solutions require users to manually handle rolling luggage, which can be particularly challenging when navigating crowded spaces or when the user needs their hands free for other tasks. The lack of integrated systems that allow a backpack to interface with and control wheeled luggage creates inefficiencies and discomfort during travel.

[0005] There is a need for a modular backpack system that can adapt to different travel scenarios, provide hands-free carrying of accessories, and integrate with wheeled luggage to improve the overall travel experience while reducing physical strain on the user.

[0006] It is noted that the improvements needed in backpacks is not solely for their use in traveling. Backpacks find as much if not more use in other contexts, suchas for carrying books to school or work, or as a type of purse or bag when a user leaves their home, walks, stands, and even lays down. A backpack may find use in carrying groceries, workout clothes and equipment to the gym, shopping, food delivery, etc. Improvements to backpacks may also expand the uses for backpacks.Summary

[0007] A backpack system comprises a modular travel frame and a first plurality of attachment devices mounted on the modular travel frame, where the plurality of attachment devices are configured to detachably attach travel accessories. Shoulder straps are attached to the modular travel frame for carrying the modular travel frame as a backpack system, and a second plurahty of attachment devices are mounted on the shoulder straps or the sides, where the second plurahty of attachment devices are configured to detachably attach to travel accessories to form a modular backpack system.

[0008] In example implementations, the modular travel frame includes a pair of telescoping extension bars, each extension bar having a rotating arm at an end thereof, where each rotating arm is configured to rotate and lock into multiple positions and includes attachment openings for attaching accessories. Each telescoping extension bar includes a push-button mechanism configured to release the extension bar to extend outward in at least two locked positions, with each telescoping extension bar configured to extend to a first locked position and a second locked position, with a fully extended length of approximately four inches.

[0009] The rotating arms are spring-loaded and configured to rotate when pushed inward and to lock into multiple positions. Each rotating arm includes a plurality of attachment openings configured to receive detachable clips. A bag holder is configured to attach to one of the attachment openings in the rotating arm, where the bag holder includes a release button for quick disconnection from the attachment opening. The bag holder includes an opening configured to receive luggage handles and bag handles, and the bag holder is configured to rotate freely to remain upright as the rotating arm rotates.

[0010] The bag holder includes a top cover configured to secure items within the opening and prevent vertical and horizontal sliding of handles, where the top cover includes a depressor configured to depress a luggage handle button to allow free movement of an extendable luggage handle when rolling luggage parallel to the user's body. A luggage extender is configured to attach to one of the attachment openings in the rotating arm, where the luggage extender includes a release button for quick disconnection and hook and loop straps configured to secure around a luggage handle.

[0011] The luggage extender includes a depressor button configured to depress a luggage handle button for free movement of the luggage handle when rolling luggage parallel to the user's body, and the luggage extender is configured to rotate 90 degrees to move luggage from a parallel rolhng position to a towing position behind the user. The depressor button is automatically released when the luggage extender is rotated to the towing position, allowing the luggage handle to lock into a static position.

[0012] The second plurality of attachment devices include clips configured to mate with corresponding clip receptacles attached to accessories including cellular phone holders, telescoping arms, umbrellas, and tumbler holders. The attachment devices may also be used as anchor points with other anchor points such as buckles or rotating arms that might support firearms in the user’s shoulders. The shoulder straps are reinforced in areas of attachment of the clips with a stabilizing material to prevent distension of the shoulder straps. The accessories include a phone holder with a telescopic rod extendable to position a phone for viewing without requiring the user to hold the phone, where the telescopic rod includes an adjustable rod section configured to bend or twist to adjust positioning of the cellular phone holder.

[0013] A travel tray is attachable to the shoulder straps via telescoping arms having corresponding clip receptacles, where the travel tray includes elastic bands, bendable arms with rubberized tips or any other mechanism configured to hold an electronic device or book in place. A detachable tumbler holder is configured to attach to the modular travel frame or the shoulder strap. The first plurality of attachmentdevices comprises buckle parts positioned on sides and top of the modular travel frame.

[0014] A travel pack having a first mating buckle parts corresponding to the buckle parts on the sides of the modular travel frame and a second mating buckle parts corresponding to the buckle parts on the top of the modular travel frame may be provided. The travel pack includes compartments and pockets and forms a backpack system with the modular travel frame when attached by the mating buckle parts to the modular travel frame. The shoulder strap includes a USB port or other power / communications connector and a power bank pocket configured to hold a power pack connectable to the USB port, and the modular travel frame includes a mesh front wall with a power bank pocket and a back side pocket having a carrying volume.Brief Description of the Figures

[0015] FIG. 1 is an exploded isometric view of the modular backpack system showing the modular travel frame, shoulder straps, travel pack, and various attachment devices that enable the system's modular functionality.

[0016] FIG. 2A illustrates a front view of the modular travel frame showing internal components including mesh fining, lumbar support pad with a plate reinforcement, belt strap pockets, travel pack retention strap adjuster, shoulder strap flap retainer, and shoulder strap buckles.

[0017] FIG. 2B depicts a back side view of the modular travel frame showing compartments that allow the modular travel frame to function as a standalone backpack with organized storage areas.

[0018] FIG. 2C is a front isometric view of the modular travel frame opened to show the internal space and an outline of the where the internal frame assembly is disposed within the internal compartment.

[0019] FIG. 2D is a side view of the modular travel frame illustrating the internal frame assembly with main frame rods, upper frame support, extension bar assembly with release button, side support straps, and rear support rod.

[0020] FIG. 2E is a rear view of the modular travel frame showing the lower frame support, frame rod retainer loops, and foundational components of the internal frame assembly.

[0021] FIG. 2F is a detailed view of the modular travel frame showing the extension bar assembly cover positioned around the opening of the extension bar assembly.

[0022] FIG. 2G is an isometric view of the internal frame assembly removed from the modular travel frame, showing the main frame rods, upper frame support, extension bar assembly, and lower frame support with storage space.

[0023] FIG. 2H is a rear view of the modular travel frame showing internal compartments, pocket, laptop compartment, and laptop closure strap integrated within the frame structure.

[0024] FIG. 3 A is a front view of the shoulder straps showing right and left shoulder strap configuration with integrated pocket, USB connector, clips, female buckles, and front buckled straps with retention slots.

[0025] FIG. 3B is a detailed view of the shoulder strap attachment system showing reinforcement plate, chp mount, and clip integrated within the shoulder strap structure.

[0026] FIG. 3C is a rear view of the shoulder strap assembly showing internal components including power pack, gel pads, pocket flap, shoulder strap flap with hook and loop layer, and plastic plate.

[0027] FIG. 3D is a view of the shoulder strap flap with pocket flap covering the opening for the plastic plate.

[0028] FIG. 3E is a front view of the plastic plate showing structural features and shape for strengthening the shoulder strap assembly.

[0029] FIG. 3F is a front isometric view of the modular travel frame showing attachment of the shoulder strap assembly with shoulder strap flap, strap flap receptacle, zippers, travel pack tension straps, tension strap adjustment mechanism, and travel frame hook and loop layer.

[0030] FIG. 3G is a front isometric view of the modular travel frame with integrated shoulder strap assembly showing the phone attachment rod, phone stabilizer cord with hook and male buckle end, female buckle, and mating clip connector in operational configuration.

[0031] FIG. 4 is a side view of the modular travel frame with shoulder straps aligned for attachment to the travel pack, showing the first plurality of attachment devices ahgned with corresponding mating buckle parts and extension bar assembly.

[0032] FIG. 5A is a top view of the modular travel frame showing attachment devices and luggage handle support gap.

[0033] FIG. 5B is a bottom view of the modular travel frame.

[0034] FIG. 5C is a top view of the travel pack showing male buckle parts configured to mate with the female buckle parts on the modular travel frame.

[0035] FIG. 5D is a bottom view of the travel pack.

[0036] FIG. 6A is an isometric view of the clip mechanism in its closed configuration, showing the clip cover positioned over the clip base with the clip release button accessible for user operation.

[0037] FIG. 6B depicts the clip mechanism with the clip cover removed from the clip base, reveabng the internal attachment components.

[0038] FIG. 6C is a detailed view of the clip release button on the clip base, showing the button in its depressed position to initiate the unlocking sequence.

[0039] FIG. 6D illustrates the inside of the clip cover showing the clip hook receptacle that engages with the clip release hook when the cover is attached to the clip base.

[0040] FIG. 6E shows the clip mechanism in its fully closed and latched configuration with the clip release hook engaged within the chp hook receptacle.

[0041] FIG. 7A depicts the phone attachment system with a mobile phone secured in the telescoping attachment rod and positioned via the adjustable rod section for hands-free viewing.

[0042] FIG. 7B illustrates the phone attachment rod chp and position adjustment lever with ribs that create preset positioning angles for the phone holder.

[0043] FIG. 7C shows the adjustment lever in its locked position, securing the attachment rod at the selected extension length.

[0044] FIG. 7D depicts a tumbler with an attached clip mechanism that allows attachment to the modular travel frame, shoulder strap assembly, or travel pack.

[0045] FIG. 8A illustrates the clip plate and its attachment to the frame rods using fasteners, with the clip base and cover assembly mounted on the clip plate.

[0046] FIG. 8B shows the clip plate attachment configuration from inside the modular travel frame, depicting the clip plate retainers that grip the frame rods for lateral stability.

[0047] FIG. 9A depicts the extension bar assembly showing arm openings that accommodate the telescoping arms and the extension bar release button for controlling arm extension.

[0048] FIG. 9B illustrates the extension bar assembly with the arms in a partially retracted position, demonstrating the telescoping range of motion.

[0049] FIG. 9C shows the baggage holder attached to one of the arms, featuring the baggage holder hook, ratchet surface, and luggage handle depressor in operational configuration.

[0050] FIG. 9D depicts the baggage holder with the cover in its closed position, showing the cover ratchet surface and baggage holder release button.

[0051] FIG. 9E illustrates the baggage holder with a luggage handle positioned within the holder, demonstrating engagement with the hook and ratchet surfaces.

[0052] FIG. 9F shows the baggage holder in an alternative configuration, illustrating the interaction between the luggage handle and the retention system components.

[0053] FIG. 9G depicts a detailed view of the baggage holder with the luggage handle fully secured and the cover in its completely closed position.

[0054] FIG. 10A shows the luggage extender attached to the attachment arm via the attachment mechanism, with the luggage handle holder positioned to accommodate telescoping luggage handles.

[0055] FIG. 10B illustrates the luggage extender positioned for parallel rolling transport, allowing the luggage handle to telescope freely during walking.

[0056] FIG. 10C depicts the luggage extender in a partially disengaged state with the release button activated to initiate disconnection from the attachment point.

[0057] FIG. 10D shows a detailed view of the luggage handle holder with the luggage handle oriented parallel to the direction of motion.

[0058] FIG. 10E illustrates the luggage extender rotated to the towing position, demonstrating the transition between parallel rolling and behind-the-user towing configurations.

[0059] FIG. 10F illustrates a sectioned view with an arm 610 rotated to LOCK, that is a clamp cam 630 urges a strapped handle (not shown) against a fixed anvil region of a strap plate 620 to inhibit telescoping.

[0060] FIG. 10G is a sectioned view with the arm 610 rotated to UNLOCK; the cam 630 clears and a longitudinal guide channel 632 aligns with the handle axis to allow sliding.

[0061] FIG. 10H is an exterior perspective of the strap plate 620 (elongate strap slots) and hub 600 seated in the arm opening 554 with a visual indicator showing LOCK.

[0062] FIG. 101 is an exterior perspective with the arm rotated to UNLOCK; indicator exposes the slide mode.Detailed Description

[0063] Described below is a modular backpack system that may be adapted for a variety of uses by travelers as well as anyone that desires to carry, use, tow or tote any object. It is noted that throughout this disclosure, the word “travel” shall be interpreted to mean simply moving while carrying, using, towing, or toting any object or objects. Backpacks may be used by travelers, but also by people going to a store, people going for a walk, people going for a walk while pushing a stroller or rolling luggage, people on their commute, people going to exercise. For purposes of this description, backpacks as described below may be used while reading, using their computer or e-book, or other activities while simply sitting or laying down.

[0064] FIG. 1 is an exploded view of the modular backpack system 100 illustrating the primary components and their relationship to one another. The modular travel frame 102 forms the central structural component of the system, providing the foundation for attachment of various accessories and components. The modular travel frame 102 includes a first plurality of attachment devices 104 strategically positioned to enable detachable connection of travel accessories and components.

[0065] Mating buckle parts 105 are positioned on the modular travel frame 102 to facilitate secure attachment of additional components, such as a travel pack 110 having expanded compartment space for the backpack system 100. A pair of shoulder straps 108 attach to the modular travel frame 102 and are configured to allow the user to carry the assembled system as a backpack. The shoulder straps 108 include a second plurality of attachment devices 106 mounted thereon, providing additional points for attaching accessories in positions convenient for user access.

[0066] The travel pack 110 is shown separated from the modular travel frame 102, illustrating how the system can be configured in different arrangements depending on the user's needs. The travel pack 110 includes corresponding mating buckle parts 105 configured to engage with the mating buckle parts 104 on the modular travel frame 102, allowing the travel pack 110 to be securely attached to form an integrated backpack system.

[0067] A phone holder apparatus 120 is depicted as one of the accessories that can be attached to the system, demonstrating the modular nature of the design. The phone holder apparatus 120 is configured to connect to one of the attachment devices, allowing hands-free positioning and use of a mobile device. A USB connector 122 is shown integrated into the system, providing power connectivity for electronic devices. The USB connector 122 may include a power cord extending to a power pack concealed in a pocket as described below with reference to FIG. 2A.

[0068] Shoulder strap buckles 152 are positioned on the shoulder straps 108 to provide adjustability and secure fitting of the system to users of different sizes. Belt straps 150 are also shown as part of the system, providing additional securing mechanisms to enhance stability and comfort during use. The exploded view clearly illustrates how these various components work together to form a comprehensive, modular travel system that can be configured and reconfigured based on specific travel requirements.

[0069] FIG. 2A illustrates a front view of the modular travel frame 102 without the shoulder straps showing the internal organization and structural components. The modular travel frame 102 includes a mesh lining 116 to provide ventilation when a user is carrying the modular travel frame 102.

[0070] The modular travel frame 102 includes a lumbar support pad with a plate reinforcement 156 positioned in a pocket along the mesh panel to provide ergonomic support when the system is worn as a backpack. The lumbar support plate 156 is positioned to abgn with the user's lower back region, distributing weight evenly and reducing strain during extended carrying periods Belt strap pockets 154 are integrated into the design to accommodate and organize the belt straps 150, preventing tangling and providing easy access for adjustment. A travel pack retention strap adjuster 124 is positioned to allow fine-tuning of the travel pack’s attachment to the modular travel frame 102, preventing the travel pack 110 from separating from the modular travel frame 102. The travel pack retention strap adjuster 124 allows for precise adjustment of the connection tension between the travel pack 110 and themodular travel frame 102, accommodating different load configurations and user preferences.

[0071] Shoulder strap buckles 152 are shown in their operational position, demonstrating how they integrate with the shoulder straps 108 to provide adjustable and secure attachment points. A shoulder strap flap retainer 118 is positioned to maintain a flap portion of the shoulder strap 108 (described with reference to FIG. 3C.

[0072] FIG. 2B depicts a back side view of the modular travel frame 102. The modular travel frame 102 includes compartments 132 on the back side to allow for the modular travel frame 102 to be used as a standalone backpack. The compartments 132 may include a laptop pocket and other components that assist the user in organizing the contents.

[0073] FIG. 2C is a front isometric view of the modular travel frame 102 opened to show the internal space and an outline of where the internal frame assembly is disposed within the internal compartment. The internal frame assembly 147 provides structural rigidity and support to the modular travel frame 102, distributing loads evenly throughout the system when accessories and components are attached. The internal frame assembly 147 is positioned within the modular travel frame 102 to maintain the frame's shape under various loading conditions while allowing the frame to interface with the travel pack 110 and other modular components. The internal frame assembly 147 works in conjunction with the mesh lining 116 and lumbar support pad with a plate reinforcement 156 to provide both structural integrity and user comfort when the system is worn as a backpack.

[0074] FIG. 2D depicts a side view of the modular travel frame 102 showing the internal frame assembly 147 and its supporting structural components. The internal frame assembly 147 includes main frame rods 148 that provide the primary structural integrity of the modular travel frame 102, extending vertically to distribute loads and maintain the frame's rigidity under various carrying conditions. An upper frame support 146 is positioned at the top portion of the internal frame assembly 147to hold the main frame rods 148 and to provide additional structural reinforcement and serve as an attachment point for upper components of the system.

[0075] The extension bar assembly 130 is integrated into the internal frame assembly 147 at a lower frame support (described in further detail with reference to FIG. 2E), providing the mechanism for extending and retracting the telescoping extension bars described in more detail below. An extension bar release button 131 is positioned on the extension bar assembly 130 to allow controlled extension and retraction of the telescoping components. Side support straps 140 are attached to the shoulder straps 148 to provide lateral stability and distribute forces across the frame structure when the system is loaded with accessories or travel components.

[0076] A rear support rod 149 extends along the back portion of the internal frame assembly 147 in substantially a U-shape to provide maintain the shape and stability of the modular travel frame 102. The rear support rod 149 is mounted on a bottom frame plate that supports the lower frame support.

[0077] A clip 106 is shown as part of the attachment system, demonstrating how the internal frame assembly 147 integrates with the modular attachment points throughout the system. The internal frame assembly 147 and its components work together to provide a robust structural foundation that supports the modular functionality while maintaining the lightweight characteristics necessary for comfortable carrying.

[0078] FIG. 2E depicts a rear view of the modular travel frame 102 showing the lower structural components of the internal frame assembly 147. The lower frame support 162 is positioned at the base of the internal frame assembly 147 to provide foundational support for the main frame rods 148 and to serve as the mounting point for the extension bar assembly 130. The lower frame support 162 distributes the weight and forces from the telescoping extension bars and attached accessories throughout the frame structure, ensuring stability when the system is loaded with luggage or other travel components.

[0079] Frame rod retainer loops 158 are positioned along the lower frame support 162 to secure and guide the main frame rods 148, preventing lateralmovement and maintaining proper alignment of the structural components. The frame rod retainer loops 158 allow the main frame rods 148 to be properly seated within the internal frame assembly 147 while providing access points for maintenance or replacement of frame components. The frame rod retainer loops 158 work in conjunction with the upper frame support 146 to create a complete structural cage that maintains the integrity of the modular travel frame 102 under various loading conditions.

[0080] FIG. 2F depicts a detailed view of the modular travel frame 102 showing the extension bar assembly cover 164 positioned to cover the structure surrounding the opening of the extension bar assembly 130, which is enclosed within the lower frame support 162. The extension bar assembly cover 164 provides a protective frame around the opening of the extension bar assembly 130 while maintaining access to the extension bar release button 131. The extension bar assembly cover 164 is configured to allow the telescoping extension bars to extend and retract smoothly while protecting the internal components from debris, moisture, and mechanical damage during use. The cover 164 integrates seamlessly with the overall design of the modular travel frame 102, providing a finished appearance while ensuring the durability and reliability of the extension bar assembly 130 throughout the system's operational life.

[0081] FIG. 2G is an isometric view of the internal frame assembly 147 removed from the modular travel frame 102. The internal frame assembly 147 is shown with the main frame rods 148 extending vertically through the frame structure, providing the primary load-bearing capacity for the entire system. The upper frame support 146 is positioned at the top of the assembly to secure the main frame rods 148 and provide structural reinforcement for upper attachment points.

[0082] The extension bar assembly 130 is contained within the lower portion of the internal frame assembly 147, with the extension bar release button 131 accessible for operation of the telescoping extension bars. The lower frame support 162 provides the foundational mounting point for the extension bar assembly 130 while distributing forces throughout the frame structure. The lower frame support 162provides a space that a user may use for storing objects such as for example an Apple Airtag™ 163.

[0083] FIG. 2H depicts a rear view of the modular travel frame 102 showing the internal compartments 170 and organizational features integrated within the frame structure. The internal compartments 170 are strategically positioned within the modular travel frame 102 to provide organized storage space while maintaining the structural integrity of the system. These compartments 170 allow users to separate and organize different types of items, ensuring easy access and preventing items from shifting during transport.

[0084] A pocket 172 is integrated into the internal compartment structure to provide additional storage for smaller items such as documents, accessories, or personal belongings. The pocket 172 is positioned to be easily accessible while maintaining security of stored items during use of the modular backpack system. A laptop compartment 176 is specifically designed within the internal compartments 170 to accommodate and protect laptop computers or tablets during transport. The laptop compartment 176 may be padded and sized to securely hold electronic devices while preventing damage from impact or movement.

[0085] A laptop closure strap 174 is positioned across the laptop compartment 176 to secure laptops or tablets within the compartment and prevent movement during transport. The laptop closure strap 174 includes adjustment mechanisms to accommodate different sizes of electronic devices while maintaining secure retention. The internal compartments 170, pocket 172, laptop compartment 176, and laptop closure strap 174 work together to provide comprehensive organization and protection for the user's belongings while maintaining the modular functionality of the travel frame system.

[0086] FIG. 3A depicts a front view of the shoulder straps 200 showing the detailed configuration and attachment components that enable the modular functionality of the backpack system. The shoulder straps 200 comprise a right shoulder strap 202 and a left shoulder strap 204, each configured to distribute weightevenly across the user's shoulders while providing multiple attachment points for accessories and system components.

[0087] A pocket 210 is integrated into one of the shoulder straps to provide convenient storage for small items such as a phone stabilizer cord (described with reference to FIG. 3G). The pocket 210 is positioned to be accessible to the user while wearing the backpack system without requiring removal of the system. A USB connector 122 is incorporated into the shoulder strap assembly to provide power connectivity for electronic devices, allowing users to charge phones, tablets, or other USB-powered accessories while the system is in use. The USB connector 122 may include a USB-A port as well as a USB-C port. It is noted that while the USB connector 122 is indicated as using the USB standard, any type of electronic interface that operates as a power source may be used as well.

[0088] At least one clip 212 is mounted on the shoulder strap assembly as part of the second plurality of attachment devices, configured to mate with corresponding clip receptacles on various accessories such as phone holders, telescoping arms, or other modular components. The clip 212 provides a secure yet easily detachable connection point that allows users to quickly add or remove accessories based on their immediate needs.

[0089] Female buckles 208 are positioned on the shoulder straps 200 to provide an attachment for the phone stabilizer cord, which has a male buckle mechanism as described below with reference to FIG. 3G. The female buckles 208 work in conjunction with corresponding male buckle. Front buckled straps 152 extend from the shoulder strap assembly to provide additional securing mechanisms that enhance the stability and comfort of the system when worn. The front buckled straps 152 may be attached to the shoulder straps 202, 204 via strap retention slots 213 allowing the user to move the straps 152 up or down according to the user's comfort.

[0090] FIG. 3B depicts a detailed view of the shoulder strap attachment system showing a reinforcement plate 216 inserted and sewn into a space in the lower portion of one of the shoulder straps between the outer layer of the shoulder strap and the inner mesh lining. The reinforcement plate may be made of plastic or other rigidmaterial. A clip 212 on a clip mount 214 may be integrated with the reinforcement plate 216. The reinforcement plate 216 is positioned to provide structural support for the modular attachment components by distributing forces on the shoulder strap from the weight of the accessories. The reinforcement plate 216 is integrated into the shoulder strap assembly to distribute loads and prevent deformation when accessories are attached to the system. The reinforcement plate 216 provides a stable mounting surface that maintains the integrity of the shoulder strap while supporting the weight and forces generated by attached accessories during use.

[0091] A clip mount 214 is secured to the reinforcement plate 216 to provide a dedicated attachment point for the modular clip system. The clip mount 214 is positioned to allow secure mounting of the clip 212 while maintaining proper alignment and accessibility for the user. The clip mount 214 works in conjunction with the reinforcement plate 216 to create a robust attachment system that can withstand the repeated attachment and detachment of accessories without compromising the structural integrity of the shoulder strap.

[0092] The chp 212 is mounted on the clip mount 214 as part of the second plurality of attachment devices, configured to mate with corresponding clip receptacles on various accessories such as phone holders, telescoping arms, or other modular components. The chp 212 provides a secure yet easily detachable connection point that allows users to quickly add or remove accessories based on their immediate needs. The combination of the reinforcement plate 216, clip mount 214, and chp 212 creates a comprehensive attachment system that maintains the modular functionality while ensuring the durability and reliability of the shoulder strap assembly.

[0093] FIG. 3C depicts a rear view of the shoulder strap assembly showing the internal components and comfort features integrated within the shoulder strap structure. A power pack 221 may be positioned within a pocket flap 220 that also closes a space for a plastic plate234. The power pack 221 in the shoulder strap assembly may be used to provide portable power for electronic devices connected through the USB connector 122. The power pack 221 is strategically located tomaintain balance and comfort while providing convenient access to power for the user's electronic accessories.

[0094] Gel pads 218 are integrated into the shoulder strap assembly to provide enhanced comfort and cushioning for the user during extended carrying periods. The gel pads 218 are positioned in the shoulder strap assembly lining to cover the shoulder area during use. The gel pads 218 distribute weight evenly across the user's shoulders and reduce pressure points that could cause discomfort during prolonged use of the modular backpack system. The gel pads 218 conform to the user's shoulder contours to provide personalized comfort and support.

[0095] The pocket flap 220 is configured to cover and protect the power pack 221 while providing secure retention within the shoulder strap assembly. The pocket flap 220 includes closure mechanisms to prevent the power pack 221 from shifting or falling out during use while maintaining easy access for replacement or charging of the power pack. The pocket flap 220 integrates seamlessly with the overall design of the shoulder strap while providing functional protection for the internal components.

[0096] A shoulder strap flap 230 extends from the main shoulder strap structure to provide additional coverage and protection for the internal components while enhancing the overall appearance of the system. The shoulder strap flap 230 works in conjunction with the pocket flap 220 to create a comprehensive covering system that protects the power pack 221 and other internal components from environmental factors and mechanical damage.

[0097] A hook and loop layer 232 is applied to the shoulder strap flap 230 to bind to a hook and loop layer on the front lining of the modular travel frame 102 to more seculerly attach the shoulder strap assembly 200 to the modular travel frame 102. The should strap flap 230 may also form a pocket to receive the plastic plate 234 as shown in FIG. 3D.

[0098] A plastic plate 234 is integrated into the shoulder strap structure to provide rigid support and mounting points for the various components within the assembly. The plastic plate 234 maintains the structural integrity of the shoulderstrap assembly while supporting the weight and forces generated by the integrated components and attached accessories.

[0099] FIG. 3D shows the shoulder strap flap 230 with a pocket flap 238 to cover an opening to the pocket for the plastic plate 234. FIG. 3E is a front view of the plastic plate 234 showing an example of a shape and features that strengthen the plate when in use.

[0100] FIG. 3F is a front isometric view of the modular travel frame 102 illustrating attachment of the shoulder strap assembly 200 to the modular travel frame 102. The shoulder strap flap 230 is shown in its operational position, demonstrating how it integrates with the modular travel frame 102 to provide coverage and protection for the connection points between the shoulder straps and the frame structure. The shoulder strap flap 230 extends from the shoulder strap assembly to cover the attachment area and provide a finished appearance while protecting the internal components from environmental factors.

[0101] A strap flap receptacle 250 is positioned on the modular travel frame 102 to receive and secure the shoulder strap flap 230. The shoulder strap flap 230 may be placed into the receptacle 250, which may be opened via a pair of zippers 252, which may be closed when the shoulder strap flap 230 is in place. The strap flap receptacle 250 is configured to accommodate the shoulder strap flap 230 further securing it by allowing attachment of the hook and loop layer 232 on the shoulder strap flap 230 to a travel frame hook and loop layer 260 further securing the integration of the shoulder strap assembly 200 to the modular travel frame 102. The receptacle 250 works in conjunction with the shoulder strap flap 230 to create a comprehensive covering system for the attachment area.

[0102] The shoulder strap assembly 200 includes a pair of travel pack tension straps 240 positioned to provide additional securing mechanisms that enhance the connection between the travel pack and the modular travel frame 102 when the system is configured as a complete backpack unit. The travel pack tension straps 240 work in conjunction with the mating buckle parts to distribute loads and prevent shifting of the travel pack during use. A tension strap adjustment mechanism 242 isintegrated with the travel pack tension straps 240 to allow precise adjustment of the tension and fit between the travel pack and the modular travel frame 102. The tension strap adjustment mechanism 242 enables users to customize the connection based on the load configuration and personal preferences, ensuring optimal weight distribution and stability during transport. The adjustment mechanism 242 provides multiple adjustment positions to accommodate different travel pack configurations and user requirements.

[0103] FIG. 3G is a front isometric view of the modular travel frame 102 with the shoulder strap assembly 102 fully integrated and showing the phone attachment system 120 in its operational configuration.

[0104] The phone attachment rod 120 is shown extending from one of the attachment points (e.g. clip connector 214) on the shoulder strap assembly 108, demonstrating the hands-free phone positioning capability of the system. The phone attachment rod 120 is configured to position a mobile device at an optimal viewing angle for the user without requiring manual support. A phone stabilizer cord 290 extends from the phone attachment rod 120 to provide additional stability and security for the attached mobile device during use.

[0105] The phone stabilizer cord 290 includes a stabilizer cord hook 292 at one end configured to attach to the phone holder 120, and a stabilizer cord male buckle end 294 at the opposite end. The stabilizer cord male buckle end 294 is configured to mate with the female buckle 208 positioned on the shoulder strap assembly, creating a secure tethering system that prevents the mobile device from falling or swinging excessively during movement. The hook 292 allows the user to easily detach the stabilizer cord 290 if, for example, it is in the way of someone passing closeby, such as when a passenger needs to cross the user to get to his seat on an airplane. This stabilizer cord system works in conjunction with the phone attachment rod 120 to provide both positioning and security for the user's mobile device.

[0106] The mating clip connector 214 is shown as part of the attachment system, demonstrating how the various accessories and components integrate with the modular travel frame 102 and shoulder strap assembly. The mating clip connector214 provides a secure yet easily detachable connection point that allows users to quickly reconfigure the system based on their immediate needs while maintaining the structural integrity and functionality of the overall modular backpack system.

[0107] FIG. 4 depicts a side view of the modular travel frame 102 aligned for attachment to the travel pack 110. The modular travel frame 102 is shown with the shoulder straps 108 attached, illustrating how the system maintains its structural integrity while providing extended functionality for carrying additional luggage and accessories.

[0108] The first plurality of attachment devices 104, or buckle parts in FIG. 4, are shown aligned with corresponding buckle parts 105 on the travel pack 110. When engaged, the travel pack 110 and modular travel frame 102 form an integrated modular backpack system.

[0109] FIG. 5A is a top view of the modular travel frame 102 showing the attachment devices 104, or female buckle parts, and a luggage handle support 156 that forms a gap for a luggage handle if the user wishes to tow the modular travel frame 102 on top of the luggage with the luggage handle. FIG. 5B is a bottom view of the modular travel frame 102. FIG. 5C is a top view of the travel pack 110. The top of the travel pack 110 has male buckle parts 105 to mate with the female buckle parts 104 on the modular travel frame 102. It is noted that the female buckle parts 104 may receive male buckle parts 105 attached to any time of travel accessory, baggage, luggage, etc. FIG. 5D is a bottom view of the travel pack 110.

[0110] FIG. 6A is an isometric view of the clip mechanism 400 in its closed configuration, showing the structural components that enable secure attachment and release functionality for the modular backpack system accessories. The clip mechanism 400 comprises a clip cover 402 positioned over a clip base 404, creating an enclosed housing that covers the internal components while providing a streamlined exterior appearance. The clip cover 402 is configured to slide or pivot relative to the clip base 404 to provide access to the internal attachment components when the mechanism is activated.

[0111] A clip release button 406 is positioned on the clip mechanism 400 to provide user control over the attachment and release functions. The clip release button 406 is accessible from the exterior of the clip mechanism 400 while being protected by the overall housing design. When activated, the clip release button 406 initiates the release sequence that allows accessories to be detached from the modular backpack system quickly and safely.

[0112] FIG. 6B shows the clip cover 402 removed from the clip base after the cover is removed. FIG. 6C is a close up view of the clip release button 406 on the clip base 404. The chp release button 406 is depressed to initiate the unlocking sequence. When the clip release button 406 is pressed, it actuates a clip release hook 408 within the clip base 404.

[0113] FIG. 6D is a view of the inside of the chp cover 402 showing a clip hook receptacle 410, which holds the clip release hook 408 when the clip cover 402 is engaged with the clip base 404. A user can attach a travel accessory to the chp base 404 mounted on the modular travel frame 102 or the shoulder strap assembly 108 or a travel pack 110 where the travel accessory has a clip receptacle having a structure similar to the inside of the chp cover 402 as shown in FIG. 6D.

[0114] FIG. 6E depicts the clip mechanism 400 in its fully closed and latched configuration, demonstrating the secure attachment state of the system. In this configuration, the chp cover 402 is positioned over the clip base 404 with the clip release hook 408 fully engaged within the clip hook receptacle 410. The chp release button 406 is shown in its normal, non-depressed position, indicating that the clip mechanism 400 is locked and ready to provide secure retention of attached accessories. This view illustrates the compact, streamlined appearance of the chp mechanism 400 when properly engaged, showing how the system maintains a clean profile while providing robust attachment functionality for the modular backpack system components.

[0115] FIG. 7 A depicts a detailed view of the phone attachment system 450 showing the mobile phone 458 secured within the system and positioned for handsfree viewing. The phone attachment system 450 comprises a telescoping attachmentrod 456 that extends from the phone attachment rod clip 452, allowing the user to position the mobile phone 458 at an optimal distance and height for comfortable viewing without requiring manual support. The telescoping attachment rod 456 provides adjustable length to accommodate different user preferences and viewing scenarios while maintaining stable support for the mobile phone 458.

[0116] FIG. 7 A shows the phone attachment system 450 with an adjustable rod section 460 positioned between the telescoping attachment rod 456 and the mobile phone 458. The adjustable rod section 460, which may be referred to as a gooseneck, provides flexible positioning capability, allowing the mobile phone 458 to be oriented and angled according to the user's viewing preferences. The adjustable rod section 460 is configured to bend and twist while maintaining sufficient rigidity to support the weight of the mobile phone 458 and resist movement during normal use of the modular backpack system.

[0117] The adjustable rod section 460 is shown in a curved configuration, demonstrating its flexibility in positioning the mobile phone 458 at various angles relative to the telescoping attachment rod 456. This configuration allows users to achieve optimal viewing angles while maintaining the stability and security of the mobile phone 458 within the phone attachment system 450. The combination of the telescoping attachment rod 456 and adjustable rod section 460 provides comprehensive positioning control for hands-free use of the mobile phone 458.

[0118] Referring to FIG. 7B, the phone attachment rod clip 452 is configured to attach to one of the attachment devices on the modular backpack system, providing a secure mounting point for the entire phone attachment system 450. A phone attachment rod position adjustment lever 454 is positioned on the phone attachment system 450 to control the positioning and locking mechanism of the telescoping attachment rod 456. The adjustment lever 454 allows users to extend, retract, and lock the telescoping attachment rod 456 at desired positions while ensuring stable retention of the mobile phone 458 during use.

[0119] Ribs 462 are integrated into the phone attachment system 450 to provide structural support and create preset positioning angles for the mobile phone458. The ribs 462 work in conjunction with the adjustment mechanisms to ensure stable positioning while allowing controlled movement and adjustment of the mobile phone 458. The ribs 462 may be configured to create multiple preset angles that correspond to common viewing positions, providing users with consistent and repeatable positioning options for optimal viewing comfort.

[0120] FIG. 7C illustrates the adjustment lever in a locked position keeping the attachment rod 456 in the selected position.

[0121] FIG. 7D depicts a tumbler 500 having a clip mechanism similar to the clip cover 404 attached to the tumbler to allow the user to clip the tumbler to a clip on the modular travel frame, the shoulder strap assembly, or the travel pack. FIG. 7D illustrates how the modular attachment system accommodates different types of accessories beyond the phone attachment system 450. The tumbler 500 represents another example of the travel accessories that can be attached to the modular backpack system using the standardized clip cover 404 attachment mechanism. The clip cover 404 provides a universal attachment point that allows various accessories, including the tumbler 500 and phone attachment system 450, to be quickly and securely attached to or removed from the modular backpack system based on the user's immediate needs and preferences.

[0122] FIGS. 8A and 8B depict a clip plate 472 and its attachment mechanism to the frame rods 148 of the modular travel frame. The clip plate 472 is configured to provide a mounting surface for the clip base and cover assembly 470, creating a secure attachment point for modular accessories within the backpack system. The clip plate 472 is positioned to interface directly with the frame rods 148, distributing attachment forces throughout the structural framework of the modular travel frame.

[0123] Fasteners 476 are shown securing the clip plate 472 to the frame rods 148, providing a robust mechanical connection that maintains the integrity of the attachment system under various loading conditions. The fasteners 476 are configured to allow secure mounting while enabling potential removal or repositioning of the clip plate 472 if required for maintenance or systemreconfiguration. The fasteners 476 may be screws, bolts, rivets, screws with nuts and washers, or any other suitable fastening mechanism.

[0124] The chp base and cover assembly 470 is shown mounted on the chp plate 472, demonstrating how the modular attachment system integrates with the structural framework of the travel frame. The assembly 470 provides the interface point for attaching various accessories to the modular travel frame while maintaining the secure connection to the frame rods 148 through the clip plate 472 and fastener system.

[0125] FIG. 8B illustrates view of the clip plate 472 attachment configuration from inside the modular travel frame 102. A plurality of clip plate retainers 474 are positioned integrated with the chp plate to grip the frame rods 149 to provide lateral stability and prevent rotation of the clip plate 472 relative to the frame rods 148 during use. This configuration ensures that the clip base and cover assembly 470 remains properly aligned and functional when accessories are attached to or removed from the modular backpack system.

[0126] FIG. 9A depicts a detailed view of the extension bar assembly 130 showing the arm 550 disposed in the side of the modular travel frame while the extension bar is in a retracted position. The arm 550 includes a plurality of arm openings 554 positioned to accommodate the accessory holders as discussed below.

[0127] The extension bar release button 552 is positioned on the extension bar assembly 130 to control the extension and retraction of the arms 550. When activated, the extension bar release button 552 allows the extension bar to extend to a desired extension length. The extension bar may be configured to lock in multiple positions before allowed to reach full extension. The extension bar release button 552 may be pressed to allow the bar to further extend or to be pushed back in a retracted position. The extension bar release button 552 provides positive locking at predetermined positions to ensure stable positioning of the arms 550 during use with attached accessories.

[0128] FIG. 9B illustrates the pressing of the extension bar release button 552. FIG. 9C shows the extension bar 557 extending from the retracted position afterpushing the extension bar release button 552. As shown in FIG. 9D, the arm 550 may be pushed inward to allow for rotation to a desired angular position. The ability to position the arm 550 in different angular positions allows for accommodation for the different heights of the user and for adjustment according to whether the user is pushing or towing or toting.

[0129] FIG. 9E depicts the baggage holder 560 attached to one of the arms 550, showing the baggage holder in its operational configuration for securing luggage handles and bag straps. The baggage holder 560 includes a baggage holder hook 572 positioned to engage with luggage handles and provide secure retention during transport. The baggage holder hook 572 is configured with a curved profile that accommodates various handle sizes and shapes while maintaining positive engagement. It is noted that the word “baggage” shall mean any bag or purse or container having a handle or holding mechanism that allows the user to carry it.

[0130] A baggage holder ratchet surface 568 is integrated into the baggage holder 560 to provide adjustable clamping force and secure retention of luggage handles within the holder. The baggage holder ratchet surface 568 works in conjunction with the baggage holder hook 572 to create a secure gripping mechanism that prevents slippage of handles during use. A luggage handle depressor 564 is positioned within the baggage holder 560 to engage with luggage handle release buttons, allowing telescoping luggage handles to move freely when the baggage is positioned parallel to the user's body for rolling transport.

[0131] FIG. 9F shows the baggage holder 560 with a luggage or baggage handle 561 disposed in the hook 572 portion of the baggage holder 560. FIG. 9G shows the baggage holder 560 with the baggage holder cover 562 in its closed position, demonstrating the complete enclosure system that secures luggage handles within the holder. The baggage holder cover 562 is configured to pivot or slide over the baggage holder hook 572 and secured by the ratchet surfaces 568, 570 to create a fully enclosed retention system. A baggage holder release button 566 is positioned on the baggage holder 560 to provide quick release functionality, allowing users to rapidly detach the baggage holder from the arm 550 when needed. The luggage handledepressor 564 is positioned to contact the release mechanism of the luggage handle 561, allowing the handle to telescope freely when the baggage is being rolled parallel to the user’s body.

[0132] The baggage holder cover 562 includes a cover ratchet surface 570 that interfaces with the baggage holder ratchet surface 568 to create an adjustable clamping system. The cover ratchet surface 570 allows the baggage holder cover 562 to be positioned at various closure positions to accommodate different handle sizes while maintaining secure retention. The interaction between the cover ratchet surface 570 and baggage holder ratchet surface 568 provides positive locking at multiple positions to ensure reliable retention of luggage handles during transport.

[0133] FIG. 10A depicts the attachment of a luggage extender 580 to an attachment opening 554 in the attachment arm 550 via a luggage extender fastener 582 configured to releasably lock into the arm opening 554.. The luggage extender 580 is configured to provide a secure interface between the modular backpack system and wheeled luggage, allowing hands-free transport of rolling bags. The luggage handle holder 584 is positioned to accommodate standard telescoping luggage handles while maintaining positive retention during transport operations. A luggage extender release button 585 is positioned on the luggage extender 580 to provide quick disconnection capability, allowing users to rapidly detach the luggage extender when reconfiguring the system or when independent use of the luggage is required.

[0134] FIG. 10B illustrates the luggage extender 580 positioned for parallel rolling transport. In this configuration, the luggage handle holder 584 may secure the luggage handle 561 while allowing the handle to telescope freely as the user walks. The luggage extender 580 maintains lateral control of the luggage while permitting the natural up-and-down movement of the telescoping handle that occurs during normal walking gait when the luggage is rolled parallel to the user's body.

[0135] FIG. 10C illustrates the luggage extender 580 in a partially disengaged state, showing the luggage extender release button 585 activated to initiate disconnection from the attachment point. The luggage handle 561 remains secured within the luggage handle holder 584 while the luggage extender attachmentmechanism 582 is shown in the process of releasing from the rotating arm. This configuration demonstrates the quick-release functionality that allows users to rapidly reconfigure the system or remove the luggage extender for independent luggage operation.

[0136] FIG. 10D depicts a detailed view of the luggage handle holder 584 showing the internal retention mechanism that secures the luggage handle 561. The luggage extender 580 in FIG. 10D is oriented so that the luggage handle 561 is parallel with the direction of motion. The attachment arm 550 is rotated to a forward position with an angle that corresponds to the height of the user.

[0137] FIG. 10E shows the luggage extender 580 rotated to the towing position, demonstrating the system's abihty to transition between parallel rolling and behind- the-user towing configurations. When rotated to this position, the luggage handle holder 584 secures the luggage handle 561 in a fixed position, preventing telescoping movement and providing stable towing characteristics. The luggage extender release button 585 remains accessible in this configuration, allowing quick disconnection when needed.

[0138] The luggage extender described with reference to FIGS. 10A-10E may be implemented using the example strap plate lift section described with reference to FIGS. 10F-10I. FIG. 10F illustrates a sectioned view with an arm 610 rotated to LOCK, that is a clamp cam 630 urges a strapped handle (not shown) against a fixed anvil region of a strap plate 620 to inhibit telescoping.

[0139] FIG. 10G is a sectioned view with the arm 610 rotated to UNLOCK; the cam 630 clears and a longitudinal guide channel 632 aligns with the handle axis to allow sliding.

[0140] FIG. 10H is an exterior perspective of the strap plate 620 (elongate strap slots) and hub 600 seated in the arm opening 554 with a visual indicator showing LOCK.

[0141] FIG. 101 is an exterior perspective with the arm rotated to UNLOCK; indicator exposes the slide mode. 1

[0142] Referring to FIGS. 10F-10I, a rotary hub 600 mates tool-lessly to the attachment arm opening 554 via interface 602. The arm 610 supports the strap plate 620, which presents two or more elongated slots sized for hook-and-loop straps that wrap directly around the luggage pull handle (cross-grip or posts). The plate’s central region allows the luggage push button release to either be pressed (unlocked) or inactive (locked)

[0143] A cam 630 formed on the arm cooperates with the plate to create, in the LOCK orientation, a wedge / clamp that compresses the strapped handle against the high-friction pad — preventing axial translation of the handle. When rotated to UNLOCK, the cam disengages and guide profile 632 aligns with the handle axis to form a longitudinal track, retaining lateral control while permitting free telescoping of the pull handle during stride. The detent 640 / 642 provides tactile indexing between states.

[0144] As Item 610, 630, and 632 rotate, they are locked in position by Item 602. Item 630 and 640 via the cam ramp elevate (unlock) the assembly or drops (locks) the luggage carry handle. The luggage carry handle button will rest inside the T handle bracket (lock) or be pushed in by the protrusion on item 632 (unlock). This will also keep the luggage handle from moving about.

[0145] Item 660 is used to manually UNLOCK luggage handle

[0146] Operation of the luggage extender proceeds as follows:

[0147] 1. Mount the hub into the backpack receiver.

[0148] 2. Strap the luggage pull handle to the plate via the longitudinal slots.

[0149] 3. Rotate to LOCK (detent chck): the cam clamps the handle height — optimized for tow-behind stability.

[0150] 4. Rotate to UNLOCK (second detent): the plate / guide allows the handle to slide up and down, accommodating hip and shoulder motion for comfortable tow- beside use.

[0151] 5. To detach the luggage, release the straps or decouple the hub from the backpack.

[0152] It is understood that various attributes and elements from any one configuration can also be included in other configurations. Although the present disclosure has been described in detail with reference to certain preferred configurations thereof, other versions are possible. The actual scope of the disclosure encompasses not only the disclosed configurations, but also all equivalent ways of practicing or implementing the disclosure. The above detailed description of the configurations of the disclosure is not intended to be exhaustive or to limit the disclosure to the precise form disclosed above or to the particular field of usage mentioned in this disclosure. While specific configurations of, and examples for, the disclosure are described above for illustrative purposes, various equivalent modifications are possible within the scope of the disclosure, as those skilled in the relevant art will recognize. The elements and acts of the various configurations described above may be combined to provide further configurations. Further, the teachings of the disclosure provided herein may be applied to products and systems other than backpacks.

Claims

ClaimsWe claim:

1. A backpack system comprising: a modular travel frame; a first plurality of attachment devices mounted on the modular travel frame, where the plurality of attachment devices are configured to detachably attach travel accessories; shoulder straps attached to the modular travel frame for carrying the modular travel frame as a backpack system; and a second plurality of attachment devices mounted on the shoulder straps, where the second plurality of attachment devices are configured to detachably attach to travel accessories to form a modular backpack system.

2. The backpack system of claim 1 , wherein the modular travel frame includes a pair of telescoping extension bars, each extension bar having a rotating arm at an end thereof, wherein each rotating arm is configured to rotate and lock into multiple positions and includes attachment openings for attaching accessories.

3. The backpack system of claim 2, wherein each telescoping extension bar includes a pushbutton mechanism configured to release the extension bar to extend outward in at least two locked positions.

4. The backpack system of claim 3, wherein each telescoping extension bar is configured to extend to a first locked position and a second locked position, with a fully extended length of approximately four inches.

5. The backpack system of claim 2, wherein each rotating arm is spring-loaded and configured to rotate when pushed inward and to lock into multiple positions.

6. The backpack system of claim 2, wherein each rotating arm includes a plurality of attachment openings configured to receive detachable clips.

7. The backpack system of claim 6, further comprising a bag holder configured to attach to one of the attachment openings in the rotating arm, wherein the bag holder includes a release button for quick disconnection from the attachment opening.

8. The backpack system of claim 7, wherein the bag holder includes an opening configured to receive luggage handles and bag handles, and wherein the bag holder is configured to rotate freely to remain upright as the rotating arm rotates.

9. The backpack system of claim 8, wherein the bag holder includes a top cover configured to secure items within the opening and prevent vertical and horizontal sliding of handles.

10. The backpack system of claim 9, wherein the top cover includes a depressor configured to depress a luggage handle button to allow free movement of an extendable luggage handle when rolling luggage parallel to the user's body.

11. The backpack system of claim 6, further comprising a luggage extender configured to attach to one of the attachment openings in the rotating arm, wherein the luggage extender includes a release button for quick disconnection.

12. The backpack system of claim 11 , wherein the luggage extender includes hook and loop straps configured to secure around a luggage handle.

13. The backpack system of claim 11, wherein the luggage extender includes a depressor button configured to depress a luggage handle button for free movement of the luggage handle when rolling luggage parallel to the user's body.

14. The backpack system of claim 13, wherein the luggage extender is configured to rotate 90 degrees to move luggage from a parallel rolling position to a towing position behind the user.

15. The backpack system of claim 14, wherein the depressor button is automatically released when the luggage extender is rotated to the towing position, allowing the luggage handle to lock into a static position.

16. The backpack system of claim 13, wherein the luggage extender includes a depressor button configured to depress a luggage handle button for free movement of the luggage handle when in a parallel rolling position.

17. The backpack system of claim 16, wherein the luggage extender is configured to rotate 90 degrees to move luggage from a parallel position to a towing position.

18. The backpack system of claim 17, wherein the depressor button is automatically released when the luggage extender is rotated to the towing position.

19. The backpack system of claim 13, wherein the luggage extender includes a side button configured to extend a luggage handle to a fully extended locked position for towing.

20. The backpack system of claim 13, wherein the luggage extender includes a release button configured to allow quick disconnection from the rotating arm.

21. The backpack system of claim 2, wherein the modular travel frame includes two extension bar systems for attaching multiple bags simultaneously.

22. The backpack system of claim 2, wherein each extension bar is configured to be used as a carrying handle or anchor point when positioned over the rotating arm.

23. The backpack system of claim 1, wherein the first plurality of attachment devices comprises buckle parts positioned on sides and top of the modular travel frame.

24. The backpack system of claim 1, wherein the second plurality of attachment devices include clips configured to mate with corresponding clip receptacles attached to accessories selected from the group consisting of cellular phone holders, telescoping arms, umbrellas, and tumbler holders.

25. The backpack system of claim 24, wherein the shoulder straps are reinforced in areas of attachment of the clips with a stabilizing material to prevent distension of the shoulder straps.

26. The backpack system of claim 24, wherein the accessories include a phone holder with a telescopic rod extendable to position a phone for viewing without requiring the user to hold the phone.

27. The backpack system of claim 26, wherein the telescopic rod includes an adjustable rod section configured to bend or twist to adjust positioning of the cellular phone holder.

28. The backpack system of claim 1, further comprising a travel tray attachable to the shoulder straps via telescoping arms having corresponding clip receptacles.

29. The backpack system of claim 28, wherein the travel tray includes elastic bands configured to hold an electronic device or book in place.

30. The backpack system of claim 1, further comprising a detachable tumbler holder configured to attach to the modular travel frame or the shoulder strap.

31. The backpack system of claim 23, further comprising a travel pack having first mating buckle parts corresponding to the buckle parts on the sides of the modular travel frame and second mating buckle parts corresponding to the buckle parts on the top of the modular travel frame.

32. The backpack system of claim 31, wherein the travel pack includes compartments and pockets and forms a backpack system with the modular travel frame when attached by the mating buckle parts to the modular travel frame.

33. The backpack system of claim 31, wherein the shoulder strap includes a USB port and a power bank pocket configured to hold a power pack connectable to the USB port.

34. The backpack system of claim 31, wherein the modular travel frame includes a mesh front wall with a power bank pocket.

35. The backpack system of claim 31, wherein the modular travel frame includes a back side pocket having a carrying volume.

36. The backpack system of claim 1, further comprising a phone holder attachment system including a cradle with adjustable ribs that create preset angles for positioning the phone holder.

37. The backpack system of claim 26, wherein the phone holder includes a threaded shaft connected to a lever configured to secure the phone holder at a selected angle, wherein the threaded shaft threads into an insert on an opposite side of the cradle.

38. The backpack system of claim 37, wherein a 180 degree turn of the lever threads the shaft deeper into the insert to tighten walls of the cradle against an arm.

39. The backpack system of claim 36, wherein the ribs create three preset angles for positioning the phone holder.

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