The present invention relates generally to closure systems and, more particularly, to magnetic closure system.
Magnetic closure systems have been utilized in various applications, to provide a closure that secures quickly while requiring minimal interaction from the user. Typically, such closures rely chiefly or exclusively upon the magnetic attraction between opposing components to maintain the closure.
Although current approaches are generally effective, shortfalls exist. For example, current magnetic closures can inadvertently open. Moreover, current magnetic closures can be expensive to manufacture.
It should be appreciated that there remains a need for closure system that addresses these concerns. The present invention fulfills this need and others.
Briefly, and in general terms, a magnetic closure system is provided that include a plurality of The closure system includes that mate which each other to secure the panels to each other along an elongated seam. The closure members comprise a plurality of magnetic pairs spaced along the elongated seam. The magnetic components are aligned with corresponding pairs, such that an upper contact surface of a female component is attracted to the upper contact surface of the male component via magnetic attraction, e.g., the male component and the female component configured with opposing polarity to provide magnetic attraction therebetween. In this manner, the closure system resists unintended separation.
More specifically, in an exemplary embodiment, the closure members include a generally planar, elongated support member having an upper surface and a lower surface and a plurality of magnetic components disposed on and attached to the upper surface of the support member in a linear manner. Each of the magnetic components has a lower side facing the upper surface of the support member and an upper side facing away from the upper surface of the support member, and each magnet is adjacent to a magnet having an upper surface of opposite polarity. The upper surfaces of the magnets of the support members can be joined to form a closure such that the magnets of one support members can be joined to the magnets of the other support member.
For purposes of summarizing the invention and the advantages achieved over the prior art, certain advantages of the invention have been described herein. Of course, it is to be understood that not necessarily all such advantages may be achieved in accordance with any particular embodiment of the invention. Thus, for example, those skilled in the art will recognize that the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.
All of these embodiments are intended to be within the scope of the invention herein disclosed. These and other embodiments of the present invention will become readily apparent to those skilled in the art from the following detailed description of the preferred embodiments having reference to the attached figures, the invention not being limited to any particular preferred embodiment disclosed.
Embodiments of the present invention will now be described, by way of example only, with reference to the following drawings in which:
This application references applicant's co-pending U.S. patent application Ser. No. 13/842,438, filed Mar. 15, 2013 (“the '438 application”), which is incorporated by reference for all purposes. At the time of invention, the inventions of the '438 application and the present application were and continue to be commonly owned.
Referring now to the drawings, and particularly
In the exemplary embodiment, the first closure member 102 comprises all female components 110, while the second closure member 103 comprising all male components 112 aligned with the corresponding female components. In other embodiments, male and female components can be distributed between both closures members, so long as (magnetic) pairs 108 of components are aligned with each across the first closure member 102 and the second closure member 103. For example, male and female-components can be alternatively spaced on each closure member 102, 103, i.e., every other component alternating between male and female components, with a male component aligned across a female component along the first and the second closure members.
With continued reference to
The supporting member 122 can be a longitudinally extending band of flexible material, such as fabric, cloth or a flexible polymer material, among others. The magnetic components 113 are attached to the supporting members 122. The prongs 120 of the magnetic components pierce through the supporting member, however, additional attachment means can be used such as adhesive, to secure the magnetic components to the supporting member.
With the support member 122 and the magnetic components 113, closure members 102, 103 can be disposed in a continuous roll (not shown), in which case desired lengths of closure members 102, 103 can be provided by cutting portions of the roll in between the magnet components. Such a closure member 102, 103 can also be provided in discrete pieces of predetermined length. The closure members can be used to form a closure system 100 as described herein, by being attached to a desired location to connect panels 104.
In other embodiments, the magnetic components 113 can be attached in any of a variety of ways known to the art with or without a supporting member 122 disposed between the magnetic components and the panel 104. For example, magnetic components can be directly adhered via adhesive. Alternatively, the magnetic components can be secured in a casing 130, which can then be sewn or otherwise mechanically attached to a panel. In yet other embodiment, magnetic components can be attached directly to the panels with prescribed spacing, excluding a supporting member entirely.
With reference now to
The magnets 108 of the closure system 100 can be disc magnets, and can be retained in a casing 130 having a pair of elongated prongs 120 extending away from the upper surface 116118 for attaching the magnet casing 130 to a support member 122, with the prongs being positioned at the periphery of the casing. The magnets can be formed from neodymium, and preferably have a magnetic strength of between 36 MGOe and 52 MGOe, more preferably a magnetic strength of 42 MGOe. The magnets can be disposed at approximately equal distances from one another on the support member 122.
In the exemplary embodiment, the housing 140 includes an outer housing portion 142 that defines the ridge 146, outer sidewall 148, and outer portions 150 of the prongs 120 (see, e.g.,
The male component 112 comprises a magnet disposed within a magnet compartment defined by the housing 164, that defines an outer surface 162 sized to be received within the cavity 134 of the female component 110. These magnetic components 113 are configured to be magnetically attracted to one another such that the male component is magnetically urged to be received within the cavity. In the exemplary embodiment, the housing 164 of the male component includes an outer housing portion 166 that defines the outer surface 162, outer sidewall 168, and outer portions of the prongs 170 (see, e.g.,
In other embodiments, the housings of the male and the female components can be formed of polymeric material(s). In assembly, the prongs puncture the supporting member and/or panel. The prongs and/or other portions of the housing are then melted to fuse with the supporting member and/or panel. For example, a thermoplastic polyurethane is coated over the magnet.
Alternatively, a support member or panel can be punctured by separate structure, thereafter, a melted polymer is dispensed onto the structure into which a magnet is positioned. As a result, the housing for the magnet can be formed by hardening of the polymer. The resulting housings can be structured as discussed herein.
It is further noted that hot melts adhesive can be provided to aid in securing the components together (e.g., magnet, housing, supporting member, panel or others). For example, hot melts adhesive can be disposed between the male component (or female component) and the supporting structure or panel, thereby forming a mechanical interlock between the fabrics and magnetic parts.
In another embodiment, best seen in
With reference now to
In the exemplary method of manufacture, the outer portion of the housing 142 is made of a unitary blank of material formed into shape. The disc-shaped magnet is disposed behind the wall of the cavity 134. Thereafter, the interior housing portion 156 is disposed behind the opposing side of the magnet. The interior portion of the housing is made of a unitary blank of material formed into shape.
With reference now to
The ring portion 184 can be similarly disposed about any compatible male component in order to make a corresponding female component. For example, the ring portion 184 can be disposed about the male component 230 depicted in
With reference now to
Magnets chosen for use in the closure system 100 (
In selected embodiments, examples of usable magnets for the closure system can include magnets and programmed magnets sold under the brand names MaxField® and Polymagnet®, available from Correlated Magnetic Research LLC. Such magnets can provide a concentrated magnetic flux proximate to the surface of the magnet. In many usages, magnets having a thickness ¾ × 1/32 or ¾ × 1/16 will often be used; however, the thickness of the magnet and the diameter of the magnet may vary according to its application. For example, magnets, e.g., neodymium, are often in the shape of a disc but may be a square or rectangle or uniquely designed shape for esthetics and fashion. Often, the magnets are axially magnetized in a grade N40 but may go up or down in its strength of the neodymium used depending on the intended application for its use.
Because strong, coupled magnets are difficult to separate by a straight pull-apart force, but separation of magnets by a sideways sliding action requires significantly less force, other embodiments are envisioned in accordance with the present invention, which allow for sliding action but not pulling action. One such embodiment involves a round male component 200 which includes a tab-like protrusion 204 around its magnet 201. This protrusion 204 slides into a rimmed containment wall 205 on a matching female component 202. Similarly, a square version of this embodiment would comprise a square male component 220 with tabs 224 alongside its magnet 221. These tabs 224 would slide into rimmed containment walls 225 around and above the magnet 223 on a corresponding female component 222. These embodiments are designed to prevent a male component from moving orthogonally away from the base of its mated female component, as is allowed by the periphery ridge 132 of the female components described in the embodiments above, while requiring less force of separation by allowing the male components to move slidingly away from the female components.
The tab-like protrusions 204, 224 as depicted in
For example, a designer may desire a magnetic closure system on a coat which only allows for separation when the front flaps of the coat are pulled closer together (i.e., making the jacket tighter) in order to prevent accidental separation. In this example, a square, tabbed male component 220 could be incorporated on the left front flap of a coat, overlapping a square female component 222 on the right front flap, with the female component 222 having horizontal rimmed containment walls 225 on the top and bottom edges of the magnet 223 and an additional rimmed containment wall located vertically on the left side of the magnet 223. The three rimmed containment walls on the female component 222 would thus form a bracket-shaped or three-sided square closure, allowing the tabbed male component 220 to slide in or out only through the right side of the female component 222. In this fashion, the male component 220 could be separated only by pulling the left front flap of the jacket to the right, tighter across the wearer's body, and sliding the male component 220 out of the rimmed containment walls 225 of the female component 222 to the right. Such an embodiment would prevent the coat from accidentally coming undone by either pulling the magnetic closure system apart or by sliding the corresponding magnets in any other direction except for to the right.
As another example, a canvas cover for a boat could be made to include circular tabbed male components 200 along the outer seam. Circular female components 202 could be attached to the hull of the boat, such that the C-shaped rimmed containment wall 205 extends across the top or innermost half of its magnet 203 with the opening of the C-shape along the edge of the magnet 203 closest to the ocean. In this embodiment, each male component 200 of the boat cover would be slid into the C-shaped rimmed containment wall 205 of each corresponding female component 222 of the boat's hull, with enough slack in the boat cover to allow the male component 220 to slide in and out of the female component 222, but with enough tension in the boat cover to pull the male components 220 against the rimmed wall brackets 225 of the female components 222 to prevent accidental separation.
With reference now to
The corresponding female component 250 of this embodiment includes a ring magnet 253 of opposing polarity to the ring magnet 243 of the male component 240, by which the male component 240 is magnetically attracted and held in place. Furthermore, the female component 250 has a peripheral ridge 255, into which the peripheral lip 245 of the male component 240 is inserted, to keep the male component 240 from slidingly detaching. This peripheral ridge 255 can also take the form of a rimmed containment wall as disclosed above, to prevent the male component from moving orthogonally away from the surface of the female component yet allow the male component to move slidingly away from the female component in a direction not blocked by the partial peripheral ridge. The female component 250 includes a male snap fastener 251, retained to the female component 250 by a rivet 254. This male snap fastener 251 allows the female component 250 to be affixed to a female snap component that is fastened to a support member or panel.
This “retrofit” embodiment allows the present invention to be quickly and easily installed over existing snap closures, wherever those traditional snap closures are located, whenever the magnetic closure system described herein is preferred.
With reference now to
In one version of this embodiment, a ferromagnetic material such as steel is used for the base 261. The permanent magnet 264 contained in the housing 262 induces a magnetic field in the ferromagnetic base 261, such that a complementary unisex component 265 is thereby attracted to the base 261. Similarly, in this version of the embodiment, the base 266 of the complementary unisex component 265 would be magnetically attracted to the permanent magnet 264 of the first unisex component 260.
The housing 262 of this unisex component 260 has peripheral ridges 263 along the side of the housing 262 which interfaces with the peripheral ridges 267 of a complementary unisex component 265. The peripheral ridges 263, 267 serve a purpose similar to that of the peripheral ridge with a rimmed containment wall 205 described in the embodiment of the female component 202 depicted in
Recitation of value ranges herein is merely intended to serve as a shorthand method for referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All references cited herein are incorporated by reference in their entirety.
Although the invention has been disclosed in detail with reference only to the exemplary embodiments, those skilled in the art will appreciate that various other embodiments can be provided without departing from the scope of the invention. Accordingly, the invention is defined only by the claims set forth below.
This application is a continuation-in-part of application Ser. No. 14/600,990, filed Jan. 20, 2015, which claims the benefit of application Ser. No. 61/929,261, filed Jan. 20, 2014, both of which are herein incorporated by reference.
Number | Date | Country | |
---|---|---|---|
61929261 | Jan 2014 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 14600990 | Jan 2015 | US |
Child | 14968059 | US |