CA2552491A1 - Backpack and strap system - Google Patents

Abstract

A backpack and strap system are described herein. The backpack comprises a bag, shoulder straps, a chest strap and a posture strap releasably connected to each shoulder strap. Each posture strap extends across the proximal outer surface of the bag, and is connected thereto by a releasable one-way pull-through clasp, allowing tightening in one direction. In use, each posture strap extends around the upper-arm of the user. Tightening is accomplished when the user pulls outwardly on the lower end of each posture strap. A
strap system of this type may be integral to a backpack or other carrying devices such as a Camel-back.TM. water carrier, a baby-carrier pack or a golf club carry bag, or may be provided as an add-on system. The user is encouraged toward improved posture through activating mid-trapezius and rhomboid muscles during tightening, and by drawing arms and shoulders backwardly once tightened.

Description

BACKPACK AND STRAP SYSTEM
FIELD OF THE INVENTION

[0001] The present invention relates generally to a backpack and a strap system for use with articles such as backpacks or other type of carrying devices having straps that extend over the shoulders.

BACKGROUND OF THE INVENTION

[0002] Many people have poor posture. Poor posture can be attributed to a wide variety of different reasons including spending long periods of time in one position, driving long distances, carrying heavy loads, sitting at an ergonomically sub-optimal desk or computer station, or can simply be attributable to complacency and lack of awareness of the detrimental effects of poor posture. Whatever the reason for development of poor posture, it is usually within the ability of an individual to correct this habit and reap benefits in both appearance and physical well-being. Left uncorrected, poor posture can lead to a lifetime of physical problems.

[0003] A motivated individual can successfully achieve correct posture through intrinsic determination simply by constantly reminding herself to sit straight with her shoulders back. However, when self-determination wanes, an individual may look to extrinsic motivation or assistance. In order to improve posture, an individual may undertake a physical therapy or massage therapy regime, or may purchase devices intended for posture improvement. Most devices intended to encourage posture improvement may not be practical for a user during her everyday activities. If a device is only used sporadically, the user cannot develop or train muscle memory through regular frequent use.

[0004] The apparatus described in International patent publication number WO/2004/037155 (filed on September 29, 2003) is a garment that employs vibratory stimulation to the wearer in order to encourage appropriate muscle positioning for correct posture. While it is possible that a user may wear this device throughout a given day, it is likely that compliance would become sporadic, and eventually the user may find the device to be too onerous to employ on a daily basis. Additionally, such a device does not address what may be a core problem in poor posture: a heavy backpack.

[0005] Another device for use in posture correction is described in International patent publication number WO/2004/085002 (filed March 19, 2004). The device described requires the user to physically engage with a stationary exercise device.
While posture correction may be achieved, compliance with such a regime would be dependent on the amount of spare time a user may have in a given day to spend at the location of the device.

[0006] Backpacks and other over-the-shoulder carrying devices are worn on a daily basis by a variety of individuals, such as students and public transit commuters. While a backpack may or may not be causative of poor posture, the backpack itself does not encourage a user toward improved posture, especially if the backpack is laden with heavy items, such as books. Students of all ages may be required to carry to and from school a large number of weighty texts, as well as other supplies required for the day such as a laptop computer, food, and liquids. The heavier the contents of such a pack, the more the user is encouraged to round her shoulders in a forward direction to counter the weight being carried.
This dissuades the user from maintaining correct posture.

[0007] There is a need for a device that can encourage a user toward improved posture, and specifically toward drawing the shoulders back. There is a need for a device that can incorporate such posture correction into daily activities, that may encourage muscle memory, and which is readily portable.

SUMMARY OF THE INVENTION

[0008] It is an object of the present invention to obviate or mitigate at least one disadvantage of previously known backpacks, strap systems, or posture correction devices.

[0009] The invention described herein relates to a backpack, and a strap system which may be used for backpacks, for other types of carrying devices, or as a posture correction device on its own.

[0010] According to an embodiment of the invention, there is provided a backpack comprising a bag having a proximal outer surface, two shoulder straps extending from the bag, a chest strap extending between the shoulder straps, two posture straps releasably connected to each shoulder strap, each posture strap extending across the proximal outer surface of the bag, and a releasable one-way pull-through clasp disposed on the proximal outer surface of the bag, through which posture straps extend for pull-through tightening in one direction.

[0011] Further, an embodiment of the invention provides a strap system for connection to a carrying device, the carrying device having a container with a proximal outer surface, and two shoulder straps extending from the container. The strap system comprises a chest strap for placement between the shoulder straps, two posture straps for releasable connection to each shoulder strap, each posture strap being of adequate length to extend across and beyond the proximal outer surface of the container, and a releasable one-way pull-through clasp for positioning on the proximal outer surface of the container of the carrying device, through which posture straps extend for pull-through tightening in one direction.

[0012] Additionally, an embodiment of the invention provides a strap system for posture improvement comprising a back-facing portion; two shoulder straps extending from the back-facing portion; a chest strap extending between the shoulder straps;
two posture straps for releasable connection to each shoulder strap, each posture strap extending from an outer edge of each shoulder strap, and each posture strap being of adequate length to extend across and beyond the back-facing portion; and a releasable one-way pull-through clasp disposed on the back-facing portion through which posture straps extend for pull-through tightening in one direction.

[0013] Advantageously, because a user is responsible for tightening the posture straps, the backpack or system of the invention can accommodate a variety of users, or can be adjusted differently for a single user, depending on the clothing a user is wearing. For example, the same user may wish to use a backpack according to the invention in winter conditions, when a large coat may be required, as well as in summer conditions when less clothing is required, thus changing the distance the posture straps must traverse around the upper arm and back.

[0014] When the posture straps are tightened, the user employs a pulling motion, which in itself encourages the user toward improved posture by activating mid-trapezius and rhomboid muscles in the outward pulling action. Once the tightening is achieved, the end result is that the portion of the posture straps traversing the upper arm of the user pulls backwardly on the upper arm and shoulders, providing a constant reminder to the user about pulling and keeping her shoulders back.

[0015] A further advantage of this backpack and system is that a user is encouraged towards a healthier stance while bearing heavy loads. However, even if a heavy load is not being carried, the user will nevertheless derive benefit from having her shoulders pulled backwardly, as well as the benefits of pulling in her shoulder blades tighter toward the spine.

[0016] Although the backpack and strap system described herein cannot singly correct defective posture, regular daily use of the pack or system will encourage muscle memory for an individual to learn what improved posture feels like. Benefits of the invention can thus be realized even when the invention is not in use through sustainable improvements in posture. Regular use of a backpack on a daily basis is, generally speaking, part of a student life-style, and thus would not represent any additional time requirement to be set aside, in contrast to other exercise-related devices that students, or others, may be too busy to use.

[0017] Advantageously, through regular frequent use of the backpack or strap system described herein, an individual's muscle memory can be trained to realize a beneficial effect that extends beyond the period of use. A user becomes more cognizant of the feeling of improved posture. The muscles of the user's arms, shoulders, neck and back become trained toward correct posture as a default or resting position. For example, when a user employs the backpack or strap system in conjunction with a recurrent environmental theme, such as waiting for pick-up after school, or a daily 6 am seniors' walking group, muscle memory is instigated so that even when not in use, the incitement to hold the shoulders back on one's own holds 'strong', in a way that is more than physical.

[0018] Many individuals already use a backpack on a daily basis. Thus, the invention as described herein is portable and is likely to be used regularly, instead of being left in the basement at home with other workout machines or other posture-improving devices.

[0019] Other aspects and features of the present invention will become apparent to those ordinarily skilled in the art upon review of the following description of specific embodiments of the invention in conjunction with the accompanying figures.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Embodiments of the present invention will now be described, by way of example only, with reference to the attached Figures.

[0021] Fig. 1 illustrates a typical backpack according to the prior art.

[0022] Fig. 2 illustrates a backpack according to an embodiment of the invention.

[0023] Fig. 3 illustrates a strap system according to an embodiment of the invention, for placement on a backpack or other carrying device.

[0024] Fig. 4 illustrates a backpack according to an embodiment of the invention having a single releasable one-way pull-through clasp disposed centrally on the proximal outer surface of the bag.

[0025] Fig. 5 illustrates a backpack according to an embodiment of the invention, employing a cover as a guide over top of the posture straps as they extend across the proximal outer surface of the bag.

[0026] Fig. 6 illustrates a backpack according to an embodiment of the invention having a sleeve through which the posture straps extend across the proximal outer surface of the bag, and having a releasable one-way pull-through clasp at the upper junction of the posture straps and proximal outer surface of the bag.

[0027] Fig. 7 illustrates a backpack according to an embodiment of the invention in which the posture straps do not overlap with each other as they extend across the proximal outer surface of the bag.

[0028] Fig. 8 illustrates components of a strap system according to an embodiment of the invention which may optionally be attachable to a backpack or carrying device.

DETAILED DESCRIPTION

[0029] The backpack and strap system according to the invention enrolls the traditional backpack frame work toward a greater goal of posture improvement through the addition of posture straps.

[0030] The invention employs posture straps in order to focus the user on shoulder and arm positioning, encouraging a pulled back position as opposed to a hunched forward position which is detrimental to the user's posture.

[0031] An embodiment of the invention provides a backpack comprising a bag having a proximal outer surface, two shoulder straps extending from the bag, a chest strap extending between the shoulder straps, two posture straps releasably connected to each shoulder strap, each posture strap extending across the proximal outer surface of the bag, and a releasable one-way pull-through clasp disposed on the proximal outer surface of the bag, through which posture straps extend for pull-through tightening in one direction.

[0032] A guide may be provided adjacent the proximal outer surface of the bag through which posture straps slidably extend. The guide may comprise a sleeve, casing, clip or cover. Further, an optional stiffening means extending from the proximal outer surface of the bag.

[0033] Two releasable one-way pull-through clasps may be used, one disposed on each of the left and right sides of the proximal outer surface of the bag.

[0034] Each posture strap may comprise a connector allowing releasable connection to a shoulder strap. An elasticized portion of the posture strap may optionally be included in a region of the posture strap adjacent the connector.

[0035] According to an additional embodiment of the invention, there is provided a strap system for connection to a carrying device. Such a carrying device could have a container with a proximal outer surface, and two shoulder straps extending from the container. The strap system according to this embodiment comprises a chest strap for placement between the shoulder straps, two posture straps for releasable connection to each shoulder strap, each posture strap being of adequate length to extend across and beyond the proximal outer surface of the container, and a releasable one-way pull-through clasp for positioning on the proximal outer surface of the container of the carrying device, through which posture straps extend for pull-through tightening in one direction. This strap system may optionally include a guide for placement adjacent the proximal outer surface of the carrier, through which posture straps slidably extend. The guide may be, for example, a sleeve, casing, clip or cover. The system may include two releasable one-way pull-through clasps disposed on left and right sides of the proximal outer surface of the bag. Other optional features of the strap system may be included, for example each posture strap may comprise a connector allowing releasable connection to a shoulder strap. An elasticized portion may be integral to one or both of the posture straps, adjacent the connector.

[0036] A further embodiment of the invention provides a strap system for posture improvement, which can be added to a backpack or other carrying device, or which may be used alone as a posture improving device. The strap system comprises a back-facing portion; two shoulder straps extending from the back-facing portion; a chest strap extending between the shoulder straps; two posture straps for releasable connection to each shoulder strap, each posture strap extending from an outer edge of each shoulder strap;
each posture strap being of adequate length to extend across and beyond the back-facing portion; and a releasable one-way pull-through clasp disposed on the back-facing portion through which posture straps extend for pull-through tightening in one direction. A guide, such as a sleeve, casing, clip or cover, may be attached to the back-facing portion, through which posture straps slidably extend. Releasable one-way pull-through clasps may be disposed on left and right sides of the back-facing portion. Each posture strap may optionally comprises a connector allowing releasable connection to a shoulder strap, and each posture strap may comprise an elasticized portion adjacent the connector.

[0037] Figure 1 illustrates a typical conventional backpack. The conventional backpack (10) comprises a bag (12) in which articles to be carried are placed.
Shoulder straps (14) are employed, and can be tightened or loosened by the user by pulling on the distal end (16) of each strap. Releasable one-way pull-through clasps (18) are positioned at the lower edges of the proximal outer surface (20) of the bag (12). A chest strap (22) is found between the shoulder straps (14), which is used to maintain the shoulder straps at a standard distance, centrally on the chest of the user. The chest strap (22) depicted here includes a releasable connector, and may optionally be tightened in order to accommodate the comfort of the user.

[0038] When in use, a backpack according to this prior art design does not encourage the user to maintain her shoulders in a backward position. In fact, when the load contained within the backpack is particularly heavy, the user may intuitively hunch her shoulders forward in an effort to counter balance the weight within the pack.

[0039] In order to overcome the deficiencies of the prior art, the invention provides a backpack comprising a bag for carrying any variety of items. The bag has a proximal outer surface, meaning a surface on the exterior of the bag that is "proximal" or adjacent to the user when the bag is in use, specifically: placed adjacent to the user's back.
Additionally, two shoulder straps of any conventional type extend from the bag in such a way that they will be placed over the shoulders of the user when the backpack is in use.

[0040] A chest strap of any conventional type is employed between the shoulder straps. Such a chest strap may be releasable through the use of a connector, or may be elasticized or tightenable. Optionally, the chest strap would not need to be releasable, as the backpack could be installed onto the user's shoulders by placement of the backpack over the user's head through the orifice formed by the chest strap, shoulder straps, and bag.

[0041] Two "posture straps" are employed on such a backpack. The posture straps may be connected to the shoulder straps in any manner that will allow releasability. The posture straps may be connected onto the outer edge of each shoulder strap (the edge opposite to the chest strap), or may extend from another more central position on the shoulder strap. The terminology "posture strap" is used herein primarily to distinguish this type of strap from the shoulder straps or chest strap, but also to emphasize that it is the posture straps that have the primary effect on improving the posture of the user.

[0042] The posture straps can be formed of any acceptable type of material, and may be formed of more than one type of material. Acceptable types of material include fabrics formed of natural fibers or synthetic fibers, including natural or synthetic polymers, and may include flexible, inflexible, or elasticized portions.

[0043] The posture straps are of an acceptable length that would allow the strap to encircle the arm of a user, extend across the proximal outer surface of the bag portion of a backpack, and still provide adequate slack for a user to reach the distal end of each posture strap when the backpack is in use. The distal ends of the posture straps are the furthest end of the strap which, in use, is dangling at both sides of the user. The length of the posture straps may vary depending on whether the backpack is intended for use by a child or adult, and may also vary depending on whether the strap system is intended for items such as a backpack, versus a water-carrying device, such as a Camelback TM, or a golf bag carrying device.

[0044] The backpack comprises at least one releasable one-way pull-through clasp disposed on the proximal outer surface of the bag through which the posture straps extend in order that the posture straps may be pulled tight in one direction, but allowing a user to actuate release of the posture straps in the opposite direction. The releasable one-way pull-through clasp may be formed as one consolidated clasp through which both posture straps extend, or may be two separate clasps through which the posture straps separately extend.
The pull-through clasp may be disposed anywhere on the proximal surface of the bag, and optimally will be placed in such a way that it is comfortable to the user, and cannot be accidentally released. For example, in an instance where two clasps are used, they may be disposed at the left and right edges of the proximal outer surface of the bag, respectively, so as to avoid contact with the central region of the user's back. In this way, the user will not feel any poking or jutting into her back from the clasps. In an instance where one consolidated clasp is used, for example in a central portion of the proximal outer surface, such a clasp can be formed so that the actuating means through which the posture straps are released is positioned toward the left or right side so that regular movement of the user will not accidentally actuate release of the clasp.

[0045] According to an embodiment of the invention, the backpack may additionally comprise a guide placed on the proximal outer surface of the bag through which the posture straps slidably extend in order to keep the posture straps in an appropriate position, or to avoid entanglement of the straps when the pack is not in use. Such guides may take the form of a sleeve or casing extending across the proximal outer surface, or a clip or series of clips through which the straps readily extend, or which may cause some resistance, but not so much resistance as to prevent slidable movement of the posture straps in either direction.
Further, a cover may be used as a guide, which may be either permanent or removable, which would extend fully across the posture straps as they extend from the left to the right side of the proximal outer surface of the bag.

[0046] As a further option, a backpack according to an embodiment of the invention may additionally comprise a stiffening means either within the back-facing portion of the bag, or which may extend downwardly from the proximal outer surface of the bag, extending adjacent to the tailbone of the user. Such a stiffening means could be used either to further enhance posture-improving capability of the invention, or simply to ensure any desirable shape or structural integrity of the backpack itself.

[0047] According to a further aspect of the invention, a strap system may be provided separately for use with a conventional carrying device such as a backpack, or other device having a container for carrying items on a user's back. Such a strap system can be formed as an add-on system (or conversion kit) to convert a conventional device to a posture-improving device. The strap system can optionally comprise a chest strap for placement between the shoulder straps. However, should the carrying device to be converted already be fitted with a chest strap, an extra chest strap need not be provided as part of a conversion kit. The strap system includes two posture straps for releasable connection to each shoulder strap. Each posture strap is of adequate length to extend across and beyond the proximal outer surface of the carrying device. As a further component, at least one releasable one-way pull-through clasp can be included for positioning on the proximal outer surface of the container portion of the carrying device. This clasp can be positioned in any appropriate way in order to ensure that posture straps extend across the proximal outer surface and can be pulled-through in the tightening direction only, although a user can purposely actuate release of the clasp.

[0048] More detailed aspects of particular embodiments according to the invention will be discussed hereinbelow with reference to Fig. 2 to Fig. 8.

[0049] Fig. 2 depicts a backpack (210) according to an embodiment of the invention.
The backpack includes a bag (212), shoulder straps (214), the shoulder straps having distal ends (216), clasps (218) for positioning the shoulder straps to the bag in a conventional manner, and a proximal outer surface (220) on the back-facing portion of the bag. Chest strap (222) is positioned between shoulder straps (214), and in this instance includes a releasable connector (224). Two posture straps are provided (226 and 228, respectively).
The posture straps are releasably connected to the outer edges of the shoulder straps via connectors (230 and 232, respectively). These connectors include two portions which mate together and require a user to actuate release in order to release the posture strap from the shoulder strap. The connector may include a mating portion that is permanently affixed to the shoulder strap.

[0050] Posture straps (226, 228) cross diagonally over the proximal outer surface (220) of the bag, and extend downwardly with enough slack to allow a user to grasp the distal ends (234, 236). A releasable one-way pull-through clasp (238, 240) is found at the right and left edges of the proximal outer surface. The releasable one-way pull-through clasps allow the posture straps to be pulled outwardly from the distal ends, but do not allow the posture straps to retract in the opposite direction, thus "loosening" of the posture straps is prevented until the user makes an attempt to actuate a release mechanism. The release mechanism component of the releasable one-way pull-through clasp may be, for instance, a liftable tab, or a spring-biased clamp that requires the user to depress the spring to allow release. Any such clasp allowing one-way tightening with releasable loosening would be acceptable for use with the invention.

[0051] Fig. 2 additionally depicts a guide in the form of a clip (242), only one of which is depicted in Fig. 2, the corresponding clip on the other side being hidden behind the depicted shoulder strap. The clip (242) is provided to maintain placement of the posture strap against the proximal outer surface of the bag when the connector (230 or 232) is released.

The posture straps can thus be held in place so as to avoid entanglement when the backpack is not in use.

[0052] Notably, the posture straps illustrated in Fig. 2 can be completely removed from the backpack, if it is desirable to do so. An instance in which removal would be desirable is when travelling through airports and checking such a backpack.
Often loose straps on bags and backpacks cause checked baggage to catch on baggage claim roundabouts. Thus, it is a convenience to the user that the posture straps can be removed.

[0053] Fig. 3 illustrates an embodiment of a strap system (310) according to the invention in which the posture straps (326, 328) are connected to the shoulder straps (314) via a releasable connector (330, 332). A chest strap (332) is provided on which a releasable connector (324) is found. A releasable one-way pull-through clasp (338) is shown on the left side posture strap (326), while the corresponding releasable one-way pull-through clasp on the right side is hidden behind the shoulder strap in the drawing, but is disposed in the corresponding position on the right side. In this embodiment, the straps do not require any type of guide for crossing the proximal outer surface of the backpack, or other carrying device to which the strap system would become attached. While the posture straps (326, 328) traverse the proximal outer surface, the distal ends of each strap (334, 336) are allowed to dangle freely at the sides of the user. Because the shoulder straps (314) are connected to the proximal outer surface via connectors (318), the posture straps would not fall downward vertically from the clasps, but would maintain the cross-over positioning.
This embodiment illustrates that it is not a necessary requirement of the invention to include any type of guide for the posture straps.

[0054] An additional optional component which may be used according to the invention is stiffening means (340). As depicted here, the stiffening means extends downwardly from the proximal outer surface of the backpack or other carrying device, in order to further encourage a straight back and correct posture.

[0055] It is emphasized that this strap system can be included as an add-on kit, for conversion of any conventional shoulder strap-based carrying device.

[0056] Fig. 4 illustrates a further embodiment of a backpack (410) according to the invention in which a single releasable one-way pull-through clasp (438) is employed, and is disposed in a centralized region of the proximal outer surface (420) of the bag (412). In this instance, the posture straps (426, 428) criss-cross the proximal outer surface, and at their crossing point, a single consolidated clasp (438) is located. In this embodiment, four clips (442) are used as guides to maintain the posture straps in a position disposed against the proximal outer surface of the bag. While these clips are not necessary, they advantageously serve to keep the straps in an orderly and out-of-the-way position. In this instance, the clips (442) provide a small amount of friction for the posture straps (426, 428) as they are pulled in either direction. This may be achieved in a number of ways, for example, by including a flexible material within the inner passage of the clip through which the strap extends, exemplary materials being closed self foam, latex, rubber or any other tacky polymer.
Regardless of how the friction is achieved, the clips are not intended to prevent slidable movement of the straps in either direction, but are simply employed as guides.

[0057] Fig. 5 illustrates a backpack (510) according to an embodiment of the invention incorporating a guide in the form of a cover (544) which is disposed on the proximal outer surface (520) of the bag (512). The cover (544) is affixed to the proximal outer surface in any manner which may be appropriate while still allowing the posture straps (526, 528) to be slidably tightenable when a user pulls on the distal ends (534, 536) of the posture straps.
In this instance, the posture straps cross over the proximal outer surface of the bag beneath the cover (544).

[0058] Releasable one-way pull-through clasps (538, 540) are also depicted in broken lines, as they are disposed beneath the cover (544). Each of the clasps has a release mechanism by which the user may depress a certain region to allow loosening of the straps.
In an instance where the clasps are disposed beneath a cover, the cover may include an outward indication for the user as to where the depressable region is located so that the user need not remove the cover in order to loosen the straps. The posture straps (526, 528) are shown in hatched lines beneath the cover (544) to indicate that the straps are continuous behind the cover.

[0059] In this embodiment, elasticized regions (546, 548) are included in posture straps (526, 528) at the junction of the connector (530, 532). This optional elasticized region may promote extra comfort to the user by providing some flexibility in the length of the posture strap once tightened, while still allowing the posture straps to tighten in a snug-fitting manner around the user's upper arm.

[0060] In this embodiment, downstream of the clasps (538, 540), no additional guide is required to maintain the distal ends (534, 536) of the posture straps in an appropriate position to be grasped by the user. This is because the cover may be attached in such a way that openings are found primarily at the corners of the cover in order to allow the posture straps to pass through.

[0061] The cover may be affixed to the proximal outer surface through any number of means, such as velcro, permanent attachment through stitching, zippers, snaps, buttons, or any similar means of attachment. The points of attachment may also be selected according to the desired design of the backpack.

[0062] Fig. 6 illustrates a backpack (610) according to an embodiment of the invention. In this embodiment, the posture straps (626, 628) are shown as thicker straps than depicted in previous embodiments, for example, Fig. 2. The thickness of the posture straps may be selected according to the desired design, and may be selected as thick or thin for any variety of reasons. In the embodiments shown here, thicker posture straps (626, 628) allow the user extra comfort and support when the straps are tightened against the upper arm. Releasable one-way pull-through clasps (638, 640) are shown at the upper junction of the posture straps with the proximal outer surface (620) of the bag (612). An "X"-shaped sleeve (646) is affixed to the proximal outer surface of the bag, and the posture straps extend therethrough in a criss-cross manner. No additional guide is included in this embodiment, because the sleeve (646) serves as a guide for the distal ends (634, 636) of the posture straps. Portions of the posture straps and clasps drawn in broken lines indicate that these features are behind other illustrated features; in the instance of the posture straps, these are shown behind the sleeve (646), and in the instance of the right side clasp (640), it is depicted behind the shoulder strap (614).

[0063] Fig. 7 illustrates a further embodiment of a backpack (710) according to the invention in which the posture straps (726, 728) extend across the proximal outer surface (720) of the bag (712) in such a way that the posture straps do not cross each other. In this embodiment, a cover (744) is used as a guide, to keep the posture straps in an appropriate position, but also to direct the right side posture strap through to the lower right side of the proximal outer surface, and the left side strap through to the lower left side of the proximal outer surface. Thus, a user will grasp the distal ends (734, 736) of the posture straps, and can achieve tightening without requiring the straps to cross each other.
Releasable one-way pull-through clasps (738, 740) are located at the upper junction of the posture straps with the proximal outer surface, but could equally be located at the lower ends. In this instance, an additional guide in the form of a clip (742) is provided at the lower end of the proximal outer surface, just before the posture straps extend from beneath the cover (744).
An additional optional feature in this embodiment is a barrier region (748, 750) disposed on the proximal outer surface, and beneath the cover (744), so as to guide the posture straps (726, 728) in an appropriate manner. In this instance, barrier regions (748, 750) are achieved by stitching the cover (744) directly onto the proximal outer surface, in which case, when the posture straps are threaded through the clasps (738, 740), past the interior region defined by the barrier regions (748, 750), and through clips (742), the straps take on a defined curve, allowing a user to pull downwardly and outwardly on the distal ends (734, 736) of the posture straps when tightening. This motion promotes the desired use of the mid-trapezius and rhomboid muscles, similar to the affect when the posture straps cross each other across the proximal outer surface of the backpack, similar to the manner shown in Fig. 2.

[0064] Releasable connectors (730, 732) are illustrated here as round instead of rectangular, simply to illustrate that any acceptable type of connector to affix the posture straps to the shoulder straps (714) in a releasable manner will be acceptable.
In this embodiment, although not specifically depicted, a stiffening means can be included within the bag (712) that would extend from the right to the left side of the bag. This would achieve an additional posture-correcting objective, by providing a straight-backed bag adjacent to the user's back. Such a stiffening means may span the entire area of the proximal outer surface of the bag, or may span only a portion of the proximal outer surface. The stiffening means may be an insert placed within a hidden pocket of the interior of the bag, so as to be removable as desired by the user.

[0065] The posture straps are connected to the shoulder straps via a readily releasable connector. The posture straps are tightened and loosened at the convenience of the user, but can also be quickly released. In order to loosen the posture straps through the releasable one-way pull-through clasps, it may be desirable for the user to remove the backpack from her back. In instances where there is a need for quick release of the posture strap, connectors can be readily disengaged without removing the backpack from the user's back. For example, a user may need to lift her arm to hold on to an overhead railing while standing in a crowded subway car. Due to lack of space, it may be impractical to remove the backpack. In such an instance, quick release of the connector allows detachment of the posture strap from the shoulder strap, and permits a full range of arm movement. Suitable connectors may allow single-point pressure releasability (for example, at the touch of one finger), but dual-point pressure release, or other forms of release may alternatively be used for the connector. The connecter may optionally be of the type that can be quickly released through a particular motion while alternatively releasable through a different motion of the user. When the user disengages the connector when removing the backpack, she may wish to simultaneously loosen the posture straps through the releasable one-way pull-though clasps after each use, so that when the backpack or strap system is worn the next time, it is ready for the user to execute the tightening motion again, thereby taking advantage of the benefits of the tightening motion.

[0066] Fig. 8 illustrates separate components of a strap system according to an embodiment of the invention which may optionally be attachable to a backpack or other carrying device. Such components may be provided individually, or together as a kit. Such a kit may be provided in order to convert an existing backpack or carrying device into one capable of improving the user's posture. The components shown are the chest strap (822), including releasable connector (824). This component is optional, because many backpacks and carrying devices already include a chest strap. The posture straps (826, 828) are provided as a removable component, including connectors (830, 832). The posture straps extend across the cover (844), which can be added to an existing backpack or carrying device to any appropriate means of affixation. In this particular illustration, a zipper (854, 856) is provided at both the upper and lower edges of the cover (844). Such zippers would be connectable to the appropriate region of the back-facing portion of the backpack or carrying device. For example, a manufacturer may wish to sew one side of each zipper onto the backpack or carrying device, so that the cover (844) could be removed, at the convenience of the user.

[0067] The releasable one-way pull-through clasp (838, 840) are depicted at the lower corners of the cover (840), in this instance and a guide in the form of a clip (842) is shown in each upper corner of the cover (844). In an instance where components are provided separately for conversion of an existing backpack or carrying device, it may be desirable to affix the clips (842) and one-way pull-through clasps (838, 840) to the interior surface of the cover (844), for the convenience of the manufacturer or user.

[0068] In use, the backpack, or other carrying device employing the strap system of the invention can be utilized by the user, or ignored and/or removed by the user when it is inconvenient to employ the strap system. Thus, a user dons the backpack or carrying device in a regular manner, putting shoulder straps over the shoulders, connecting the chest strap, and adjusting the distal ends of the shoulder straps to an appropriate length for optimal comfort. At this point, the user may choose to affix the posture straps around the upper arm of each arm, feeding one side of the connector adjacent the posture strap to the mating side of the connector on the shoulder strap. Once the connection of the posture strap to the shoulder strap is made, the user simply grasps the distal ends of the posture straps which should be dangling at the sides of the user. The user then pulls firmly in an outward and downward direction, thereby tightening the straps, pulling the shoulders back, tightening the shoulder blades in toward the spine, employing mid-trapezius and rhomboid muscles. The tightening action in itself is beneficial to the user, and the end result is that the user's posture is corrected for the duration of the time that the backpack or carrying device is worn.

[0069] For students or others carrying large backpacks for considerable distances over the better part of each day, the benefits of improved posture will be realized quickly. If a user is simply standing still, for example, waiting for a bus at a bus stop, or standing in a bus or subway, the corrected posture will assist the user in positive reinforcement and muscle memory of the appropriate posture position.

[0070] In an instance where a user has poor posture, but has no need to carry a backpack or other carrying device, it would be possible to provide the strap system without any type of bag or carrying device attached to it. In such an instance, it would only be necessary to provide straps, for example as shown in Fig. 8, that a user can tighten in an appropriate manner. For individuals who are required to sit at desk jobs for lengthy periods of time, or stand for lengthy periods of time, such as in retail work, the strap system may be incorporated into a garment which may be worn beneath regular clothing.
Alternatively, the strap system may be incorporated into a unified vest-type item that could be worn over-top of clothing, and which could be designed as an attractive article to wear. In such an instance, the shoulder straps and chest strap may be provided as one unified component, which could be slipped over the head of the user, instead of requiring conventional style backpack connectors.

[0071] The above-described embodiments of the present invention are intended to be examples only. Alterations, modifications and variations may be effected to the particular embodiments by those of skill in the art without departing from the scope of the invention, which is defined solely by the claims appended hereto.

Claims (19)

1. A backpack comprising:

a bag having a proximal outer surface, two shoulder straps extending from the bag, a chest strap extending between the shoulder straps, two posture straps releasably connected to each shoulder strap, each posture strap extending across the proximal outer surface of the bag, and a releasable one-way pull-through clasp disposed on the proximal outer surface of the bag, through which posture straps extend for pull-through tightening in one direction.

2. The backpack of claim 1 additionally comprising a guide adjacent the proximal outer surface of the bag through which posture straps slidably extend.

3. The backpack of claim 2 wherein the guide comprises a sleeve, casing, clip or cover.

4. The backpack of claim 1 additionally comprising a stiffening means extending from the proximal outer surface of the bag.

5. The backpack of claim 1 comprising two releasable one-way pull-through clasps disposed on left and right sides of the proximal outer surface of the bag.

6. The backpack of claim 1 wherein each posture strap comprises a connector allowing releasable connection to a shoulder strap.

7. The backpack of claim 6 wherein each posture strap comprises an elasticized portion adjacent the connector.

8. A strap system for connection to a carrying device, the carrying device having a container with a proximal outer surface, and two shoulder straps extending from the container, the strap system comprising:

a chest strap for placement between the shoulder straps, two posture straps for releasable connection to each shoulder strap, each posture strap being of adequate length to extend across and beyond the proximal outer surface of the container, and a releasable one-way pull-through clasp for positioning on the proximal outer surface of the container of the carrying device, through which posture straps extend for pull-through tightening in one direction.

9. The system of claim 8 additionally comprising a guide for placement adjacent the proximal outer surface of the carrier, through which posture straps slidably extend.

10. The system of claim 9 wherein the guide comprises a sleeve, casing, clip or cover.

11. The system of claim 8, comprising two releasable one-way pull-through clasps disposed on left and right sides of the proximal outer surface of the bag.

12. The system of claim 8 wherein each posture strap comprises a connector allowing releasable connection to a shoulder strap.

13. The system of claim 12 wherein each posture strap comprises an elasticized portion adjacent the connector.

14. A strap system for posture improvement comprising:

a back-facing portion;
two shoulder straps extending from the back-facing portion;
a chest strap extending between the shoulder straps;

two posture straps for releasable connection to each shoulder strap, each posture strap extending from an outer edge of each shoulder strap; each posture strap being of adequate length to extend across and beyond the back-facing portion; and a releasable one-way pull-through clasp disposed on the back-facing portion through which posture straps extend for pull-through tightening in one direction.

15. The system of claim 14 additionally comprising a guide attached to the back-facing portion, through which posture straps slidably extend.

16. The system of claim 15 wherein the guide comprises a sleeve, casing, clip or cover.

17. The system of claim 14, comprising two releasable one-way pull-through clasps disposed on left and right sides of the back-facing portion.

18. The system of claim 14, wherein each posture strap comprises a connector allowing releasable connection to a shoulder strap.

19. The system of claim 18 wherein each posture strap comprises an elasticized portion adjacent the connector.