The present invention relates to fasteners.
Fasteners and clasps on clothing can be a challenge for people who live with mobility restrictions. For example, over 16 million women in North America have mobility restrictions preventing them from donning and doffing a bra independently, or causing them to experience significant pain while doing so. Such mobility restrictions may include arthritis, Parkinson's disease, cerebral palsy, or upper-body amputation.
Front-closing bra clasps need to withstand a variety of forces without unclasping accidentally. Many bra clasp mechanisms are designed specifically for secure closures and unobtrusiveness. As a result, they can be difficult to engage and disengage, especially for users with dexterity problems such as arthritis in their hands, or missing or deformed fingers. Even a sore shoulder significantly impacts a person's ability to don and doff a bra. The hook and eye clasp was invented in 1900 and is the standard bra closure, yet the features that make it secure also make aligning and closing it difficult for most users and impossible for some.
Although magnetic front bra clasp mechanisms are known, these closures provide minimal mechanical support and merely rely on a strong magnetic coupling force to remain closed. This reliance on magnetic force is a potential hazard regarding the security of the clasp remaining in its locked position. This is true for magnetic front closures on bras, especially for larger-chested wearers for whom a front-closing clasp experiences greater forces in a variety of directions. These magnetic clasps sometimes come unfastened accidentally. This failure is unacceptable and particularly so in a bra clasp.
There is a need for a clasp that is secure, unobtrusive, and easy to lock and unlock for all users, including those with mobility restrictions.
In one aspect, the invention provides a fastener that comprises complementary male and female components that reversibly engage with each other magnetically and mechanically and exist in a locked position or an unlocked position, wherein the fastener is changed from locked position to unlocked position by applying a shearing force.
In another aspect, the invention provides a fastener that comprises complementary male and female components that reversibly engage with each other magnetically and mechanically and exist in a locked position or an unlocked position, wherein the fastener is changed from locked position to unlocked by moving the components in opposite directions on a longitudinal axis so that the components move toward one another.
In one embodiment, unlocking by moving the components toward one another is applying forces to shear the magnetic engagement. In one embodiment, unlocking by moving the components toward one another is applying forces such that the mechanical features disengage. In one embodiment, the moving the components toward one another comprises applying a first force to the male component in a longitudinal direction; and applying a second force to the female component in a longitudinal direction, wherein the first force is in an opposite direction from the second force such that the components move toward one another. In one embodiment, the male component comprises a mechanical feature adapted to reversibly attach to a complementary mechanical feature on the female component, and a magnetic feature that reversibly magnetically mates to a complementary magnetic feature on the female component. In one embodiment of the fastener in the locked position, the mechanical features of the male component and female component are located in a same plane. In one embodiment, the fastener further comprises two loops for attaching to fabric, wherein one loop is located on the male component and the other loop is located on the female component. In one embodiment, in the locked position, two loops for attaching to fabric are located in a same plane. In one embodiment, the fastener is a bra front closure. In one embodiment, the bra further comprises a pocket (25) under each cup. In one embodiment, a garment having the clasp assembly further comprises a pocket or loop near the attachment ends of the clasp assembly components. In one embodiment, the fastener is changed from locked position by gross motor movement.
In one aspect, the invention provides an article of clothing comprising the fastener of any of the above aspect and embodiments, wherein the article of clothing is a bra, swimwear, lingerie, garter, belt, skirt, trousers, blouse, shoe, blazer, coat, jacket, dress, shirt, or uniforms.
In one aspect, the invention provides an article that includes a strap, comprising a fastener of any one of the above aspect or embodiments.
In one embodiment, the article is selected from a suitcase, purse, handbag, wallet, back pack, wearable electronic device, watchband, computer bag, medical or athletic monitoring equipment, and helmet. In one embodiment, the helmet is selected from a cycling helmet, motorcycle helmet, ski or snowboard helmet, horse riding helmet, sports helmet, and safety helmet. In one embodiment, the locked clasp is disengaged by a shearing force that moves a male bar (24) within female recess (6), and moves a female sloped wall (8) against a male sloped wall (21) until the components disengage. In one embodiment, in the locked position, two attachment ends for attaching to fabric are located in a same plane. In one embodiment, the shearing force moves a male bar (24) within female recess (6) and female sloped wall (8) moves against male sloped wall (21) until the components disengage. In one embodiment, the shearing force is applied by moving the attachment end of the female component of the clasp assembly, and the attachment end of the male component of the clasp assembly, in a longitudinal direction such that they move toward one another. In one embodiment, the shearing force is applied using gross motor movements by the wearer by inserting each hand into a pocket or loop located near each attachment end. In one embodiment, a first magnetic feature is housed within the male clasp component and a second magnetic feature is housed within the female clasp component.
In one aspect, the invention provides a method of using the fastener of the above aspects and embodiments, wherein the male and female clasp components are changed from an unlocked to a locked position by moving the male and female clasp components into close proximity, engaging the position male and female clasp components by magnetic attraction forces moving the male and female clasp components into a locked position, whereby they are magnetically and mechanically mated. In one embodiment, the male and female clasp components are changed from an unlocked to a locked position by gross motor movements only
In one aspect, the invention provides a method of using the fastener of any one of the above aspects or embodiments, wherein the male and female clasp components are changed from a locked to an unlocked position by applying a shearing force by moving the attachment end of the female component of the clasp assembly relative to the attachment end of the male component of the clasp assembly, in a longitudinal direction such that they move toward one another.
For a Better Understanding of the Invention and to Show More Clearly how it May be Carried into Effect, Reference Will Now be Made, by Way of Example, to the Accompanying Drawings, Wherein:
One embodiment of the present invention provides a fastener that combines magnetic fastening with mechanical fastening. Due to this combination of both magnetic and mechanical fastening features, this fastener is referred to herein as a dual clasp. These clasps combine ease of accessibility of use and attractive product design. Once in a locked position, the mechanical features of the dual clasp have the capability to withstand disengaging forces for all directions in a 3D coordinate system except one. The mechanical features prevent disengagement of the closure from rotation around any axis or movement along any direction except one axis of disengagement. A force along this axis allows disengagement by shearing the magnets and disengaging the mechanical features.
When installed in a garment, this dual clasp is easily implemented by looping fabric through attachment ends and sewing the fabric to itself. The dual clasp assists bra wearers who have mobility restrictions to independently don and doff a bra since it provides an easy-to-use clasp option. In one embodiment, the dual clasp is used in a front-closing bra. In one embodiment, the dual clasp is used in a rear-closing bra.
Due to strong magnetic forces, a large gripping force from the user is required to unclasp such magnetic clasp mechanisms. For example, for a bra-wearer to unclasp the mechanism in the front position, the wearer must pinch each end of the magnetic clasp and twist them against the magnetic coupling force. For wearers with mobility restrictions, these magnet only clasps can be painful or impossible for the wearer to unclasp independently.
The present invention provides clasps suitable for use in apparel. The dual clasp is relevant to apparel that would benefit from a fastener that offers high security, is easy to lock and unlock, and is unobtrusive. Such apparel could include a bra, swimwear, lingerie, garters, belts, skirt, trousers, blouse, shoes, blazer, coat, jacket, dresses, shirts, and uniforms, etc.
The present invention provides clasps suitable for use as fasteners. This use may include the dual clasp secured to strap ends of any article that includes a strap. Non-limiting examples include: purses, handbags, wallets, suitcase, back packs, wearable electronic device, watchbands, computer bags, medical or athletic monitoring equipment, and helmet (e.g., cycling helmet, horse riding helmet, sports helmet, safety helmet).
In one embodiment, a front closure bra having the dual clasp, additionally has a pocket (25) located under each bra cup. The pockets aid the wearer to bring the clasp's male and female components into proximity to one another, and to aid in disengaging the clasp by applying force in an inward direction.
The dual clasp has two components, referred to as male and female components. These components reversibly engage with each other both magnetically and mechanically. See
To place the dual clasp in the locked position, the male and female components are brought into close proximity. As described herein, each component includes a magnetic feature, as well as a mechanical feature. Once close together, the components' magnetic features attract each other and, due to the magnetic force, they move closer together. This movement allows the complementary mechanical features to engage. Finally, as the magnetic features come in contact with each other, the mechanical features are mechanically mated in a locked position. In this locked position, the components are both magnetically mated and mechanically mated.
Accordingly, when a bra having the dual clasp is in use, the wearer would place the bra straps over their shoulders and with minimal guidance, the magnetic coupling force would attract both sides of the bra together and lock the present invention in the mechanically mated position. Advantageously, it is possible to move the clasp components toward one another using gross motor movements only. For example, a wearer or user who cannot perform fine motor skills could place the clasp components near each other using arm and shoulder movements. Once the clasp components are close to each other, their magnetic features then attract one another, which leads to the components moving into the locked position.
The user would then be able to participate in their normal daily activities, regardless of their chest size or physical abilities, and would be able to feel confident and independent. The mechanical features of the dual clasp prevent accidental disengagement of the clasp assembly.
To unlock the dual clasp, an inward force is applied to each of the male and female components along the longitudinal axis, where the forces are in opposite direction so that the components move towards each other. That is, the components are pushed inward with a force that is sufficient to shear the dual clasp's magnetic features. This shear force causes disengagement of the mechanically mated male and female components, thereby completing the disengagement. Applying the force to disengage the dual clasp can be done with gross motor movements and therefore is more accessible to individuals with mobility restrictions.
This disengaging force can be applied with a gross movement from two hands, wrists, or arms. There is no need for fine motor movement such as pinching, which is an asset for users experiencing conditions such as arthritis. The unlocking force can also be applied by a single hand using a pinching motion, which enables use of the bra clasp by single-arm amputees. In the case of an able-bodied individual, the dual clasp provides a secure front clasp option that is unobtrusive and alleviates many of the frustrations experienced while struggling with bra clasps such as the traditional hook and eye clasp.
That is, the present invention is disengaged when a subject pushes the attachment ends towards each other along the x axis. In one embodiment, when the two components of the clasp assembly are in the locked position, the two attachment ends are located in the same plane. See
In some embodiments, the disengagement direction is opposite to the tension exerted by the garment being clasped. A force that is applied along any other axis does not lead to disengagement of the mechanically mated components nor does it separate the magnets. The dual clasp also resists disengagement by twisting-which is the disengagement method used by currently-existing magnetic bra clasps. This ability to remain fastened while undergoing twisting is advantageous. Twisting forces on front bra closures are known to occur when a bra wearer is running or performing other movements. This is true especially for large-chested wearers. Such forces may cause accidental disengagement in currently-existing magnetic bra clasps.
In one embodiment, the male and female components include a housing for the magnetic feature. The housing may include one or more friction elements that holds the magnet in the housing (e.g., press fit in place). In one embodiment, the magnetic feature is attached to the male (or female) component via adhesive. In one embodiment, the complementary magnetic features of the male and female components are opposite poles relative to one another. In one embodiment, one of them is a magnet, and the other is a metallic surface that is attracted to a magnet (e.g., steel).
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A protrusion (7) located on the female component, resists tension forces in the garment, which are in an outward lateral, or x, direction. This protrusion (7) mechanically mates with a corresponding opening (22, see
Recess 6 on the female component is a cavity which is complementary to male bar (24) of the male component. When disengaging forces are applied, the magnetic features shear apart, and, at the same time, male bar (24) moves within female recess (6) and female sloped wall (8) moves against male sloped wall (21) until the two components are fully disengaged. In the locked position, male bar (24) rests within female recess (6) and female sloped wall (8) sits against male sloped wall (21).
Female chamfer (5) is a sloped surface that guides male bar (24) into female recess (6) during the engagement step. This positioning of male bar (24) in female recess (6) allows the attachment ends of the female (see loop 13) and male (see loop 19) components to be in the same plane when the dual clasp is engaged. Fabric, from an article to which the clasp is attached can be passed through female loop hole (3) and male loop hole (18). When engagement of the dual clasp causes tension in a garment, this tension force acts upon loops (13 and 19). The female bar (4) and female hollow (2) are analogous to male bar (24) and male hollow (14). These features connect the attachment end of each component to the main body of each component of the dual clasp. Surface (12) is a smooth wall which faces away from the wearer and, in the case of a bra garment, is in contact with the wearer's shirt.
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Surface (17) is a smooth surface that, in the case of a bra garment, is in contact with the wearer's skin.
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It will be understood by those skilled in the art that this description is made with reference to certain embodiments and that it is possible to make other embodiments employing the principles of the invention which fall within its spirit and scope.
This application claims the benefit of the filing date of U.S. Application No. 63/602,100, filed on Nov. 22, 2023, the contents of which are incorporated herein by reference in their entirety.
Number | Date | Country | |
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63602100 | Nov 2023 | US |