EP2723212B1 - Flexible impact protective cases - Google Patents

Flexible impact protective cases Download PDF

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Publication number
EP2723212B1
EP2723212B1 EP12808015.7A EP12808015A EP2723212B1 EP 2723212 B1 EP2723212 B1 EP 2723212B1 EP 12808015 A EP12808015 A EP 12808015A EP 2723212 B1 EP2723212 B1 EP 2723212B1
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EP
European Patent Office
Prior art keywords
cover
panel
case
protective case
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12808015.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2723212A4 (en
EP2723212A1 (en
Inventor
Daniel M. Wyner
Richard B. Fox
Thomas Cafaro
Richard L. Garrard
Ami Newsham
David Foster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
G Form LLC
Original Assignee
G Form LLC
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Filing date
Publication date
Priority claimed from US13/271,594 external-priority patent/US20120091025A1/en
Application filed by G Form LLC filed Critical G Form LLC
Publication of EP2723212A1 publication Critical patent/EP2723212A1/en
Publication of EP2723212A4 publication Critical patent/EP2723212A4/en
Application granted granted Critical
Publication of EP2723212B1 publication Critical patent/EP2723212B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/02—Materials therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/10—Arrangement of fasteners
    • A45C13/1069—Arrangement of fasteners magnetic
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/10—Arrangement of fasteners
    • A45C13/1076—Arrangement of fasteners with a snap action
    • A45C13/1092—Arrangement of fasteners with a snap action of the socket-and-pin type
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00—Flexible luggage; Handbags
    • A45C3/001—Flexible materials therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C2011/003—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00 for portable computing devices, e.g. laptop, tablet, netbook, game boy, navigation system, calculator
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/02—Interior fittings; Means, e.g. inserts, for holding and packing articles
    • A45C2013/025—Interior fittings; Means, e.g. inserts, for holding and packing articles for holding portable computers or accessories therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F5/00—Holders or carriers for hand articles; Holders or carriers for use while travelling or camping
    • A45F2005/008—Hand articles fastened to the wrist or to the arm or to the leg
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F2200/00—Details not otherwise provided for in A45F
    • A45F2200/05—Holder or carrier for specific articles
    • A45F2200/0525—Personal portable computing devices, e.g. laptop, tablet, netbook, game boy, navigation system, calculator

Definitions

  • the disclosure relates to flexible impact protective cases.
  • Protective cases for sensitive equipment, devices or instruments are usually designed with padding on the interior or exterior, or both. Many times the padding is formed of continuous sheets of protective materials, such as neoprenes, foams and/or laminated materials, and the like. Such cases often do not offer sufficient protection from impact, vibration, and the like. Protection for the devices may be improved by using thicker materials, but increasing the thickness may not be desirable due to the added bulk or weight. Moreover, increased weight and bulk may be undesirable for streamlined electronic devices, for which users usually pay a premium in order to obtain slim and/or lightweight products.
  • screen interfaces used to display information to users, so it is necessary to expose the screen during use.
  • screen interfaces are known to be delicate, tending to break easily when dropped or otherwise impacted.
  • Portable electronic devices such as laptop computers, or medical equipment, also have screen interfaces, and to protect the screen interface, such devices often include a hinged protective cover that provides some protection from dropping or impact, when not in-use.
  • a hinged protective cover that provides some protection from dropping or impact, when not in-use.
  • many cell phones, media devices, and tablet-style computers or netbooks do not include such covers. Therefore, a screen or edge impact can easily cause severe damage to the screen and/or device.
  • some devices such as iPad devices, are very thin and delicate, which exacerbates their ability to withstand an impact.
  • a rigid plastic shell which may include internal or external padding, such as rubber or silicone.
  • the rigid shells offer some protection, there are some disadvantages.
  • the shells are made for specific device sizes and configurations, and therefore cannot be used for "next-generation" devices, such as when a device is upgraded or changed.
  • a store must stock multiple stock-keeping units ("SKU(s)") to accommodate the range of devices of even a like kind.
  • SKU(s) stock-keeping units
  • Another disadvantage is that such rigid shells, even with some soft added elements, may not protect well against a drop of the face or open screen. Even devices that include a protective bezel do not absorb energy, unless made very thick, so a drop on the screen side may result in a broken screen.
  • a soft "skin” generally made of rubber, silicone or other thermoplastic elastomeric (“TPE”) material.
  • TPE thermoplastic elastomeric
  • skins are made for specific device sizes and configurations, and therefore cannot be used for "next-generation" devices.
  • Other disadvantages are that they are generally thin, and therefore provide only minor impact protection and mostly scratch protection. They also may not be able to protect the device from a significant drop on the screen side, from corner or edge drops, and they offer no torsional protection if the devices bends or twists on impact.
  • case is a portfolio-style case, to which the electronic devices may be attached using clips, elastic bands or other features.
  • these types of cases do not provide screen side impact protection, and generally offer little impact protection.
  • US-A-2010/0089778 describes a bag for a laptop in which inter-engageable cover members may be secured at various positions to accommodate different sized laptops.
  • the bag has a leather outer surface and a nylex inner fabric with a shock absorbing polyethylene foam therebetween.
  • the upper cover, lower cover and two side covers may be folded in to accommodate the laptop and secured with Velcro fasteners.
  • the present disclosure is directed to, in one embodiment, a protective case for a device having an exposed screen.
  • the case comprises a flexible structural panel comprising a panel interior surface and a panel exterior surface.
  • One of the structural panel interior and exterior surfaces comprises an extensible material
  • one of the structural panel interior and exterior surfaces comprises a non-extensible material.
  • At least one flexible retaining device is disposed on the panel interior surface positioned in order to grip the device while providing access to screen area of the exposed screen.
  • the at least one flexible retaining device comprises a layer of a rate dependent material disposed between an extensible inner material layer and an non-extensible outer material layer.
  • the protective case further comprises a cover defining an inner cover surface, an outer cover surface, and opposing first and second cover edges, the cover being interconnected to the structural panel at the first edge.
  • the cover can comprise an optional protective element.
  • Some embodiments can comprise fastening devices to maintain the cover in a closed position, and to position the case as an easel.
  • the present disclosure is directed to a protective case that allows full access to the device while the device is in the case and in-use, as well as protection for impacts to the front, back and sides of a device.
  • the present case provides improved protection for devices with screen interfaces, as are found in many electronic and medical devices.
  • the present cases are lightweight, flexible and provide improved impact protection, particularly for exposed screen or "in-use” devices.
  • the present cases protect the corner and edges of devices, as well as provide torsional protection against the device twisting or bending upon impact.
  • due to the flexible construction of the case it is not specific to one device size, but instead may accommodate a range of device sizes.
  • the case is also comfortable to hold and carry, due to its flexibility.
  • the case may also be used in a kneeboard or other body attachment with comfort, due to its flexibility.
  • the present case has the further advantage of being capable of accommodating a range of device shapes. Therefore, the cases can be designed and used for any type of sensitive device or item that may need protection, such as musical instruments, wine and liquor bottles, crystal, and the like.
  • the present cases and methods of making provide improved impact protection, lighter weight, reduced bulk, improved aesthetics, reduced manufacturing costs, improved fit, and less abrasion to the contained article.
  • the cases can be hygienic, as they may be designed so as to be able to be washed and to also withstand the high temperatures and caustic chemicals used in commercial-grade laundering.
  • FIGS. 1-11 when taken together, show one embodiment of an exemplary protective case 10 according to the present disclosure.
  • case 10 comprises a perimeter "P" and opposing front and back sides 12,14, each with corresponding front and back surfaces 12a, 14a.
  • a retaining device 30 is disposed in each corner of the panel 20 (hereinafter “corner-retaining device(s) 30).
  • the retaining devices 30 each have a substantially triangular shape, and are positioned in the corners of the case 10.
  • the retaining devices may be positioned elsewhere.
  • an alternative configuration for the retaining device 30 may comprise a single retaining device shaped like a bezel (not illustrated) extending around case 10, extending inwardly from the perimeter by a width sufficient to retain a device in the case.
  • Another alternative may comprise disposing one or more retaining devices 30 on the sides, such as on each of the four sides, or at multiple points along the sides, or a combination of corners and sides. The retaining devices may be positioned in order to grip the device, while providing access to, and not obscuring, the ports, controls, and screen area.
  • an optional binding 40 may be disposed around the case 10, for functional and aesthetics reasons.
  • Case 10 also may comprise a plurality of access ports to provide access to various functional devices on the device and/or to external devices, such as battery chargers, audio ports, camera lenses, and the like.
  • the access ports may be disposed in any location, as desired, to correspond with the location of such features as found on commercial electronic devices.
  • case 10 comprises an audio port 50 that extends through one of the corner-retaining devices 30, and a camera port 60 that extends through the panel 20.
  • Camera port 60 is disposed on a planar, raised pad 65 formed in the case, which is adapted to press against the backside of the device when in use.
  • the camera port 60 may comprise a film (not illustrated) integrated into the port, to minimize or eliminate debris from entering the port.
  • pad 65 may comprise a recessed region (not illustrated) disposed around the camera port 65, for receiving the film, which can be attached to the pad by, for example, welding, and the like. If a film is used, is may be desirable to use a non-yellowing optical film that can withstand laundering.
  • the case edges, including the binding can be flexed in order to expose and provide access to the various functional devices.
  • the edges of the case comprise the rate dependent foam, which leaves the edges of the device fully protected when in use, but also capable of being bent or folded in order to easily to accommodate, for example, the charge cable, etc.
  • Panel 20 may be formed from a variety of materials. Suitable materials and methods of making the panels are disclosed in U.S. Publication Nos. 2007/0261274 , 2008/003614 , 2009/0255625 .
  • the foregoing applications describe methods that can be used to mold the panels and retaining devices, and the molds for the panels and retaining devices can be designed to compress the layers together under conditions sufficient to minimize or eliminate the foam in the channels, while allowing the layers to bond together, either with a chemical or thermal bond, or both.
  • panel 20 may comprise a structural material, and additionally may comprise one or more layers of a variety of materials with different aesthetic and functional characteristics, and which may be varied as needed or desired for a particular application or design.
  • Structural material means any material having sufficient structural integrity to be formed into predetermined shapes, sufficient strength to weight ratio to provide structure to the case, and that is capable of withstanding the environment in which it is intended to be used.
  • the structural material may comprise a variety of materials such as, but not limited to, polymeric materials, including foamed polymeric materials, composite materials, and the like.
  • the structural material can comprise a rate dependent material. Examples of rate dependent materials include, but are not limited to, d30 and Poron XRD.
  • rate dependent materials include, but are not limited to, d30 and Poron XRD.
  • One exemplary structural material is a rate dependent foam available from Rogers Corporation under the product name Poron XRD®.
  • the Poron XRD® foam density may range from between about 16 kg/m 3 (1 pound per cubic foot, "pcf") and about 640 kg/m 3 (40 pounds per cubic foot), more particularly from about 80 kg/m 3 (5 pcf) to about 480 kg/m 3 (30 pcf), more particularly from about 16 kg/m 3 (1 pcf) to about 400 kg/m 3 (25 pcf), and more particularly still from about 240 kg/m 3 (15 pcf) to about 400 kg/m 3 (25 pcf).
  • the structural material may be combined or co-molded with other materials including, but not limited to, synthetic and/or non-synthetic materials including, but not limited to, paper, fabric, metal, metallized plastic, plastic film, metal foil, and/or the like, as well as composites, laminates thereof, and/or combinations comprising at least one of the foregoing.
  • Other suitable materials include, bur are not limited to, fabrics, leather, vinyl, composites, laminates thereof, and/or combinations comprising at least one of the foregoing.
  • fabric it may be synthetic or non-synthetic, knit, woven, non-woven, laminates thereof, and combinations comprising at least one of the foregoing.
  • Any of the foregoing materials may be laminated and/or may comprise a coating on one or both surfaces, to impart desirable functional or aesthetic characteristics, such as water repellency, and the like.
  • the panel or portions of the panel requires stretch, then use of a material with elongation may be desirable. Therefore, in some embodiments, it may be desirable to combine or co-mold the structural material with materials than are extensible, because the extensible materials can improve the flexing of the case, as well as impart other desirable characteristics, such as water repellency, air or water permeability, increased surface tension, which may be desirable when non-slip characteristics are desired. For example, when greater air permeability is desired, it the extensible materials may be mesh.
  • Extensible material means any formable material that is capable of regaining its original shape or position after bending, stretching, compression, or other deformation, and that is capable of withstanding the methods used to form the material and the case, and that is capable of withstanding the environment in which it is intended to be used.
  • suitable extensible materials include, but are not limited to, any extensible substrate comprising a TPE film and/or coating, composites thereof, laminates thereof, and combinations thereof.
  • Polyester and polyether thermoplastic polyurethane (“TPU”) have been found suitable to be used alone, or in laminated form.
  • One exemplary material is a Polyester thermoplastic polyurethane (“TPU”) made by Bayer and sold under the name PS5400.
  • Suitable film thicknesses range from about 0.025 mm (1 milli-inch (“mil(s)”)) to about 0.38 mm (15 mils), more particularly between about 0.051 mm (2 mils)to about 0.254 mm (10 mils), and even more particularly from about 0.076 mm (3 mils) to about 0.178 mm (7 mils).
  • film thicknesses may be increased to, for example, 0.381 - 1.524 mm (15 - 60 mils), limited only by the characteristics and performance of the film after molding.
  • film thicknesses When used in laminated form, it may be possible to decrease film thicknesses, as laminating the film to a substrate may enhance strength and abrasion characteristics.
  • TPE film thicknesses When laminated to an extensible substrate (such as a circular knit or Lycra fabric), TPE film thicknesses of about 0.025 mm (1 mil) or less could readily be used in some applications.
  • Suitable extensible materials include, but are not limited to, synthetic and non-synthetic knit, woven and non-woven fabrics, composites thereof, laminates thereof, and combinations thereof.
  • suitable fabrics include those comprising fibers such as elastane, which is also known under the product names of Spandex, Lycra and Dorlastan which, when included in fabrics, either by wrapping the elastane fiber with a non-elastic thread (either natural or synthetic) or using pure elastane threads worked or woven into fabrics made from other fibers, may provides varying degrees of elasticity, depending on the percentage included in the fabric, which depends on the type of fabric and the end use. For example, about 2% may be sufficient to allow a garment to retains its shape, whereas compression applications, such as athletic wear, undergarments and sportswear may comprise up to about 40% elastane, or more, if desired.
  • Suitable extensible materials include the foregoing synthetic and non-synthetic knit, woven and non-woven fabrics, composites thereof, laminates thereof, and combinations thereof, including those comprising a TPE film and/or coating, composites thereof, laminates thereof, and combinations thereof.
  • non-extensible materials include, but are not limited to, nonwoven materials, including nonwoven fabrics, leather, woven materials, such as ballistic fabrics, and the like.
  • nonwoven materials include, but are not limited to, reinforced and un-reinforced polyester, nylon, rayon, polyamides (such as aramids and para-aramids), and the like, and combinations thereof.
  • Examples may include Cordura, Kevlar, Twaron, Spectra, Zylon, ripstop weaves thereof, and combinations thereof.
  • One suitable ballistic material is a woven 1680 denier ballistic Nylon sold by Rocky Woods, 418 8th Street SE, Loveland, Colorado, which has a weight of approximately 407 g/m 2 (12 ounces per square yard (oz/yd 2 )), a polyurethane coating of approximately 34 - 42.38 g/m 2 (1-1.25 oz/yd 2 ) on one side for water resistance, and a durable water repellent ("DWR”) finish on the opposite side.
  • DWR durable water repellent
  • Suitable materials include 1050 ballistic nylon and Cordura, both with and without the polyurethane coating and/or DWR, which are available from Rockywoods and Brookwood Roll Goods Group, 275 Putnam Road Wauregan, Connecticut. It may be desirable for the polyurethane coating on these fabrics to be heavier such as 68 g/m 2 (2.0 oz/yd 2 ) or more, which may provide greater moisture resistance or durability. In addition, a laminate of TPE on these fabrics may further enhance the water resistance.
  • panel 20 may comprise a layer of a structural material (hereinafter “structural layer”) and a layer of extensible material (hereinafter “extensible layer”) disposed adjacent to the structural layer.
  • structural layer a structural material
  • extensible layer a layer of extensible material
  • panel 20 may comprise a structural layer disposed between opposing extensible layers.
  • the inside 12a and outside 14a of the case may be formed from an extensible material that "grips" the electronic device, when it is disposed in the case, and also grips the surface on which the device may rest, or be held, during use.
  • the corner-retaining devices 30 may comprise any of the materials used for panel 20, as described above. It maybe desirable for the thumbprint side of the retaining device to be formed from a material that "grips" the electronic device, when it is disposed in the case. Therefore, the corner pieces may comprise a TPU or other film or material that has some "grip" properties, on the surface of the retaining device that faces the device. TPU has been found suitable for gripping a variety of devices, but a silicone or any TPE or possible certain fabrics or leather could also have such grip properties.
  • One exemplary material is a Polyester TPU made by Bayer and sold under the name PS5400. Other Polyether TPU could easily be used or any TPU or TPE would also be good choices.
  • Suitable film thicknesses range from about 0.025 mm (1 milli-inch, "mil(s)") to about 0.38 mm (15 mils), more particularly between about 0.05 mm (2 mils) to about 0.25 mm (10 mils), and even more particularly from about 0.075 mm (3 mils) to about 0.18 mm (7 mils).
  • the optional binding 40 may comprise any of the materials used for panel 20, as described above. However, in may be desirable to bind the edge with the ballistic Nylon or Cordura with DWR, or with any other highly abrasion resistant and stain or water resistant material, to provide durability and water resistance.
  • panel 20 is shown in FIGS. 4-6 , when taken together.
  • the composite panel 20 is sized to be larger than the device to be protected, in order to have edge protection that extends beyond the perimeter of the device.
  • panel 20 comprises a molded multilayer construction, comprising a structural layer disposed between a non-extensible inner layer 12 and an extensible outer layer 14.
  • the panel may be molded with "medallions," or areas of greater and lesser thickness, as described in the applications mentioned above, but it is not necessary to do so.
  • inclusion of regions of very thin or “near zero" foam thickness may improve the flex of the case, and improve durability by minimizing or preventing delamination of the foam.
  • the near-zero regions also allow flex, which may be helpful, as noted when the part is sewn under tension so that it may accommodate a range of device sizes.
  • Such regions also allow for sealing out moisture or dirt from areas completely surrounded by near zero foam thickness, as closed cell structures prevent or minimize the migration of moisture or dirt therethrough.
  • near zero areas also allow for areas to be readily heat sealed as the near zero areas can be welded more easily without any cell structure that absorbs or interferes with heat for welding. As noted this may be helpful in sealing film or other clear materials over a camera hole or for edge sealing the panels into a more water resistant structure. A near zero area around the edge perimeter may create a more durable structure for laundering.
  • Panel 20 also comprises an optional channel 22 spaced apart from and extending around the entire perimeter 24 of the sheet. If the retaining devices and/or optional binding are to be attached by stitching, then it may be advantageous to include such a channel.
  • the channel 22 defines a bumper portion 26 adjacent to the perimeter, which may be encapsulated in a binding material, as discussed previously.
  • the channel 22 has a width W 1 and a thickness T 1
  • the bumper 26 has a thickness T 2 and a width W 2 .
  • width W 1 may be selected to be sufficient to accommodate a stitching tool, and to be thin enough to stitch, while still being sufficiently thick to minimize or prevent defects from the stitching operation.
  • a thickness T 1 of about 0.076 cm (0.030”) and a bumper thickness T 2 of about 0.3175 cm (0.125”) have been found suitable, such that when stitched together with the corner-retaining devices 30, a larger bumper can be formed.
  • panel 20 and corner-retaining devices 30 are stitched together along the stitching lines, forming a supportive and protective edge, or bumper, for an electronic device disposed in the case.
  • FIG. 7-9 show an expanded perspective view of one exemplary corner- retaining device 30, which also comprises an optional channel 22 spaced apart from and extending around two sides 30a,b. If the retaining devices and/or optional binding are to be attached to the panel by stitching, then it may be advantageous to include such a channel.
  • the channel 22 defines a bumper portion 26 adjacent to the edges 30a,b of the device 30.
  • the channel 22 has a width Wi and a thickness Tl s and the bumper 26 has a thickness T2 and a width W2.
  • width Wi may be selected to be sufficient to accommodate a stitching tool, and to be thin enough to stitch, while still being sufficiently thick to minimize or prevent defects from the stitching operation.
  • width Wi may be selected to be sufficient to accommodate a stitching tool, and to be thin enough to stitch, while still being sufficiently thick to minimize or prevent defects from the stitching operation.
  • the same thicknesses and widths as used for panel 20 have been found suitable.
  • the corner-retaining devices 30 have a sufficient thickness to be able to protect the device, particularly when it includes a screen interface, from an impact.
  • the retaining devices may have a thickness ranging from about 0.102 cm(0.040") to about 1.270 cm (0.500”), more particularly about 0.254 cm (0.100") to about 0.889 cm (0.350”), and more particularly about 0.381 cm (0.150”) to about 0.762 cm (0.300").
  • Corner-retaining device 30 also comprises a notch 34, for stress relief during assembly and use, and a recessed region 38.
  • the recessed region 38 has a concave or thumbprint-like shape, which assists with insertion of a device into the case 10.
  • the presence of the recessed region also maximizes the exposure of the device and/or screen surface when the device is positioned in the case, which is advantageous for accessing functional keys that would otherwise be hidden under the retaining device 30.
  • Increasing or decreasing the thickness for the device may vary the exposure of the device and screen underneath the retaining device 30. For example, the exposure of the device may be increased by increasing the thickness T 3 of the device in region 31, which allows the recessed region to be further spaced from the device, when in use.
  • the corner may be contoured as shown for aesthetics and to provide access for a finger to remove and insert the device. Maximizing the thickness toward the sewn edge of the corner may assist with keeping the device from sliding too far to a corner or edge. Having film wrap the entire piece, as shown in the figures, may be desirable.
  • the recessed region in the corner-retaining device allows for a greater thickness in the corner where needed for protection, but the flexibility to insert the device and access under the corner retainer to touch the full area of the screen.
  • the recessed regions in the corner-retaining devices are not necessary, but may be advantageous, in some instances, because they allow the dimensions, including the thickness, of the corner-retaining device to be maximized.
  • the ability of the retaining devices to "lock" the device into the case increases, and provide the ability to accommodate a wide a range of device sizes.
  • the thicker regions of the corner-retaining device may compress to accommodate gripping different sizes of devices within a reasonable range.
  • the channel, bumper, recessed region and notch may be any size, shape and/or configuration desired or needed to allow ease of attachment of the retaining device 30 to the panel 20.
  • the result of the corners of molded foam locking in the device, the molded panel and the bound foam sewing flange edge is a case that is capable of protecting the device from almost any type or direction of drop.
  • the lateral movement of the device is limited because it is secured by the corner-retaining devices.
  • the corner-retaining devices absorb impact from a drop on the screen-side, because the thickness spaces the screen from the impact surface.
  • the back of the molded panel also absorbs energy.
  • the recessed areas of the corner-retaining devices are raised above the screen in that area, and while thinner, they also provide added protection as they have the capability to absorb energy in flexing of those areas during impacts.
  • case 10 involves attaching the retaining devices 30 to a substantially rectangular composite panel 20.
  • Retaining devices 30 may be attached to panel 20 using a variety of techniques including, but not limited to, stitching, gluing, welding, or a combination of the foregoing.
  • the retaining devices 30 may be attached to panel 20 under tension, such that panel 20 has a concave shape. When assembled, the retaining devices 30 are disposed so that the "gripping" surface is disposed adjacent to the iPad.
  • a relatively non-extensible material such as a Cordura or a Ballistic Nylon fabric or other non-extensible material for the composite panel when sewn into this concave shape has a unique synergistic effect of creating torsional or twisting protection for a delicate device.
  • the device is inserted into the concave non-extensible structure under fairly significant tension and presses against the corner retainers.
  • the device itself is given added torsional stability by the strength of the non-extensible fabric structure, and is restrained from flexing forward toward the open screen by the tension of the non-extensible panel.
  • the flexible case structure provides surprising torsional or twist protection during impact.
  • the foam thickness in the corner-retaining devices allows different dimensioned devices to be tightly gripped.
  • the optional binding 40 may be disposed around the circumference of the panel 20, such that it extends slightly beyond the channels on panel 20 and corner-retaining devices 30.
  • the optional binding 40 may be attached using a variety of techniques including, but not limited to, stitching, gluing, welding, or a combination of the foregoing.
  • the inside 12a be formed from an extensible material that "grips" the electronic device, when it is disposed in the case, and for the outside 14a of the case to be formed from a non-extensible material that can provide improved abrasion resistance and/or high strength and/or sliding characteristics for the intended application.
  • the ballistic fabric is not capable of being co-molded with the panel 20, then it could be attached to the outer surface using a variety of attachment techniques including, but not limited to, sewing, gluing, welding, and the like.
  • the binding is attached by stitching.
  • the panel 20 and retaining device 30 construction each include a stitching channel, and the binding is disposed around the circumference of the panel, and folded over the edge of the panel, after the retaining devices have been attached to the panel. The binding is then sewn to the panel at the stitching lines, through all of the layers.
  • FIGS. 10-11 when taken together, shows perspective and cross-sectional views of an electronic device 70 (hereinafter “device 70") disposed in case 10, such that the charging plug on device 70 is exposed to the corresponding audio port 50 on case 10, and the camera lens on the back of device 70 is exposed to the corresponding audio port 50.
  • device 70 is disposed in case 10 such that the corner-retaining devices 30 are disposed over the corresponding corners of device 70.
  • the retaining devices 30, in combination with the inner surface of the case 10, "grip" or retain the device 70 within the case 10.
  • corner-retaining devices 30 are under tension, such that panel 20 is forced into a concave shape, as shown in FIG. 11 .
  • a spacer region "S" is formed between the back surface of device 70 and the front surface of case 10.
  • the space S is advantageous because it provides heat dissipation, space for storage, and it minimizes or prevents sound waves emanating from the speaker, from being muffled or suppressed.
  • This case as described may be used as is or placed within a sleeve for transport and full screen protection.
  • FIGS. 12-14 when taken together, show another embodiment of an exemplary protective case 100 according to the present disclosure.
  • panel 20 comprises a molded multilayer construction, comprising a structural layer disposed between a non-extensible inner layer 12 and an extensible outer layer 14. Therefore, in the present embodiment, the surfaces of the case and the corner-retaining devices that contact the device, when inserted into the case, have "gripping" surfaces, to help retain the device in the case.
  • the case may be constructed such that the corner-retaining devices 30 are under tension, as in the previous embodiment, to force panel into a concave shape, as shown in FIG. 11 .
  • the case may be used as is or placed within a sleeve for transport and full screen protection.
  • FIGS. 15-17 when taken together, show one embodiment of an exemplary protective portfolio-style case 200 according to the present disclosure.
  • the portfolio configuration offers screen protection during transport but may not be needed for in field use.
  • the same materials and construction methods use in previous embodiments may be used to construct the present case.
  • case 200 comprises a retaining panel 202 and a cover panel 204, each of which comprise an optional binding 40 at the outer edge.
  • cover panel 204 may be attached to panel 202 using various attachment methods.
  • panels 202, 204 are the same size and shape, and are attached to one another along one edge by stitching, or by an intermediate device, such as a hinge (not illustrated).
  • panel 202 is identical in construction to case 100, comprising a perimeter "P" and opposing front and back sides 12,14, each with corresponding front and back surfaces 12a, 14a, and a retaining device 30 is disposed in each corner of the panel 20 (hereinafter “corner-retaining device(s) 30).
  • the retaining devices 30 each have a substantially triangular shape, and are positioned in the corners of the case 10.
  • case 200 comprises a zipper closure 25, but other types of closures may be used, such as hook and loop tape, a waterproof and/or gas resistant zipper, a plastic zipper (e.g., Zip-Loc-style), pillow flap type closures, or any other closure method.
  • the zipper closure 25 may be attached to the outer edge of the panels by stitching adjacent to the zipper teeth, along the stitching lines, and the panel at the closure end is sufficient thickness to minimize or prevent defects from the stitching operation, and is sufficient to provide protection in the zipper area.
  • the portfolio case utilizes a zippered edge, but the top may be attached using other fasteners including, but not limited to, a belt, Velcro, magnets clips, and the like.
  • the case may be constructed by sewing, but in the case of more water resistance being desired, the sewing could be replaced by heat sealing, gluing or welding of any kind.
  • cover panel 204 may comprise a liner 23, which may be attached to the interior surface of panel 204, for example, by stitching. Cover panel 204 also comprises a pocket 25, formed from the same material as the liner 23. If desired, panel 204 may comprise additional pockets or receptacles may be included for papers, writing instruments, cell phones, chargers, and the like.
  • Case 200 may include an optional insert (not illustrated) disposed between the liner and panel 204, which may comprise any rigid material or a composite structure that involves a rigid material or by itself is sufficiently rigid, preferably a relatively light-weight, rigid, impact-resistant plastic such as polycarbonate, acrylonitrile butadiene styrene (“ABS”), polyvinyl chloride (“PCV”), polypropylene (“PP”), laminates thereof, composites thereof, and combinations thereof.
  • ABS acrylonitrile butadiene styrene
  • PCV polyvinyl chloride
  • PP polypropylene
  • An optional binding 40 may be disposed around the circumference of the panels, such that it extends slightly beyond the stitching channels on the panels and corner-retaining devices.
  • the rigid support structure for the case.
  • the rigid material in the case may be designed to be larger in length and width than the electronic device stored in the device case, to provide even further edge impact protection for the edges of the device.
  • FIG. 17 shows a perspective view of a device 70 disposed in case 200, such that the charging plug on device 70 is exposed to the corresponding audio port 50 on case 10.
  • device 70 is disposed in case 10 such that the corner-retaining devices 30 are disposed over the corresponding corners of device 70.
  • FIGS. 18-23 when taken together, show one embodiment of an exemplary protective "in-use" style case 400 according to the present disclosure.
  • the in-use style case offers screen protection during transport, and may be configured in a variety of ways, including for use as a kneeboard. The same materials and construction methods use in previous embodiments may be used to construct the present case.
  • case 400 comprises a retaining panel 402 and a cover panel 404, each of which comprise an optional binding 40 at the outer edge.
  • cover panel 404 is attached to panel 402 by an intermediate hinge device 90.
  • cover panel 404 comprises three (3) fold lines 410.
  • Cover panel 404 also may comprise an optional liner (not illustrated), which may be attached to the interior surface of panel 404, for example, by stitching. If desired, panel 404 also may comprise additional pockets or receptacles may be included for papers, writing instruments, cell phones, chargers, and the like.
  • Cover panel 404 also may comprise at least one optional protective element 420.
  • the protective element 420 may be co-molded with the liner material, or formed separately and attached to the liner using a variety of techniques such as sewing, gluing, welding, and the like.
  • the present embodiment comprises a single rectangular protective element 420 extending between opposing edges of panel 404, which is stitched to the liner between two of the fold lines 410.
  • Case 400 also may include one or more optional inserts (not illustrated).
  • panel 404 comprises three optional inserts (not illustrated) disposed in pockets (not illustrated) created by stitching the liner along fold lines 410.
  • the optional inserts may comprise any relatively lightweight, rigid, impact-resistant material, as described above.
  • panel 402 is identical in construction to case 100, comprising a perimeter "P" and opposing front and back sides 12,14, each with corresponding front and back surfaces 12a, 14a, and a retaining device 30 is disposed in each corner of the panel 20 (hereinafter "corner-retaining device(s) 30).
  • the retaining devices 30 each have a substantially triangular shape, and are positioned in the corners of the case 10.
  • the present case may comprise at least one fastener, to maintain the cover in a close position, when not in use.
  • case 400 comprises two interconnectable fastening devices 75, 77, used to close the case. In use, when closed, the buckles pinch the two edges together.
  • Fastener 75 comprises webbing 75s attached to opposing exterior surfaces of the case, with corresponding quick-release buckle style fasteners 75a,b attached to the ends of the webbing 75s.
  • fastener 77 comprises webbing 77s attached to opposing exterior surfaces of the case, with corresponding quick-release style fasteners 77a,b attached to the ends of the webbing 77s.
  • the webbing is attached to the case body by stitching, but those of ordinary skill in the art will recognize that a variety of other attachment methods may be used.
  • the present case comprises a buckled closure, but those of ordinary skill in the art will recognize that a variety of other closures can be used in place of, or in addition to, the buckle closure, such as a zipper, Velcro, magnets, clips, and the like.
  • FIG. 24 shows a perspective view of case 400 in an in-use configuration, such that the exterior surfaces face inwardly, and with a device 70 disposed in the case.
  • device 70 is disposed in case 40 such that the corner-retaining devices 30 are disposed over the corresponding corners of device 70.
  • the present in-use case can be attached to a variety of support members as desired, such as user's arm, leg, thigh, luggage, backpacks, medical instruments, kitchen handles (e.g., for cook's ease of use), and the like.
  • FIG. 25 shows a perspective view of case 400 in an in-use kneeboard configuration, attached to a user's thigh.
  • the exterior surface of the case is disposed adjacent to the user's thigh, and depending on the outer material, can "grip" the user's thigh.
  • the webbing 75 may be elasticized, which also may assist in gripping the case to the thigh/support. It is a unique aspect of the present cases, that the exterior surface of the case is sufficiently flexible to comfortably wrap a user's thigh, arm, etc., while still providing full device protection. This is achieved through the use of the exterior surface with longitudinal supports and longitudinal optional protective elements that allow wrapping of an arm or thigh etc., but when used as a cover still can offer appropriate screen protection.
  • panel 404 may be folded along fold lines 410 to form an easel configuration.
  • FIGS. 27-30 when taken together, show another embodiment of an exemplary protective in-use style case 500 according to the present disclosure, with a magnetic closure and retractable carrying handle 560.
  • the same materials and construction methods use in previous embodiments may be used to construct the present case, including the retractable handle 560.
  • case 500 comprises a retaining panel 502 and a cover 504, each of which comprise an optional binding 40 at the outer edge.
  • cover 504 is attached to panel 502 by an intermediate hinge device 90.
  • retaining panel 502 is similar in construction to case 100, comprising a perimeter "P" and opposing front and back sides 12,14, each with corresponding front and back surfaces 12a, 14a, and a retaining device 30 disposed in each corner.
  • the retaining devices 30 each have a substantially triangular shape, and are positioned in the corners of the case 500.
  • cover 504 comprises an opposing cover panel 506 and liner panel 508.
  • cover panel 504 comprises four (4) pockets defined by at least partially stitching the cover panel 506 and liner panel 508 together from the opposing short edges of the cover panel, along fold lines 510.
  • Cover panel 504 also may include one or more optional inserts to provide stability to the cover. Prior to attaching the optional binding, four (4) optional inserts 520 are disposed in the pockets.
  • the optional inserts may comprise any relatively lightweight, rigid, impact-resistant material, as described above, such as polycarbonate.
  • Cover panel 504 also may comprise at least one optional protective element, to provide impact resistance for the front side of a device disposed in the case.
  • the present embodiment comprises two (2) rectangular protective elements 530 extending between opposing short edges of the cover 504.
  • the protective elements may be formed from a variety of materials, and may be may be co-molded with the liner material, or formed separately and attached to the liner panel 508 using a variety of techniques such as sewing, gluing, welding, and the like.
  • the protective elements 530 are the same material as the corner retaining devices and panels, and are stitched to the liner panel 508 between the fold lines 510.
  • case 500 may comprise at least one fastener, to maintain the cover in a closed position, when not in use.
  • case 500 comprises an optional magnetic fastener, which comprises a tab 530 extending from the retaining panel 502.
  • Two magnets M 1 , M 2 are disposed in the tab 530, which allow the case to be closed using the magnetic closure.
  • Two additional and optional magnets M 3 , M 4 are disposed in the cover panel 504, which allow the cover to be folded into an easel configuration, with the magnets retaining the case in the easel configuration.
  • Tab 540 can comprise a variety of materials, including the same material as the cover panel, described above. In the present embodiment, the magnets M are stitched into place, but any technique can be used to maintain the position of the magnets.
  • FIGS. 31-33 when taken together, show another exemplary sleeve-style case 600 according to the present disclosure.
  • Case 600 can be constructed from, for example, two (2) panels 20 that are mirror images of one another, and can be attached together. As shown, two panels 20 are stitched together along the stitching lines with the outer surfaces 14a facing one another. As shown, case 600 comprises a zipper closure 25 as in previous embodiments, but other types of closures may be used, as described above.
  • the case is inverted, such that the edges are positioned adjacent to one another and form a supportive interior bumper 610, with a channel 620 adapted to suspend a device (not illustrated) within the case 600.
  • the cases disclosed herein can comprise one or more of the following advantages: 1) they provide lightweight impact resistance; 2) the cases are flexible, and can accommodate devices of different dimensions, in contrast to other types of cases, which are designed specifically for one type of device; 3) improved economics as a result of the methods of making the panels and retaining devices; 4) the ability to provide a single-panel, lightweight, "in-use” case with screen protection; 5) the ability to provide a protective cover for an "in-use” case, with the linear protective medallion on the inside cover; 6) folding cover provides easel configuration; 7) the clip on strap extenders provide a knee board for in-use applications; 8) the clip extenders provide a knee strap which, when combined with the flexible panel, allow the case to be strapped to a user's limb, unlike rigid portfolios 9) the flexible panel allows the case to be attached to display poles, etc., such an oven panel (for cook's ease of use); 10) the cover provides a place for embroidering or embossing e.g.,
  • ranges disclosed herein are inclusive and combinable (e.g., ranges of "up to about 25 weight percent (wt.%), with about 5 wt.% to about 20 wt.% desired, and about 10 wt.% to about 15 wt.% more desired,” are inclusive of the endpoints and all intermediate values of the ranges, e.g., "about 5 wt.% to about 25 wt.%, about 5 wt.% to about 15 wt.%", etc.).
  • the notation "+/-10% means that the indicated measurement may be from an amount that is minus 10% to an amount that is plus 10% of the stated value.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Casings For Electric Apparatus (AREA)
  • Buffer Packaging (AREA)
EP12808015.7A 2011-06-24 2012-06-25 Flexible impact protective cases Not-in-force EP2723212B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161501140P 2011-06-24 2011-06-24
US13/271,594 US20120091025A1 (en) 2010-10-12 2011-10-12 Flexible impact protective cases and methods of making
US201161556749P 2011-11-07 2011-11-07
PCT/US2012/044000 WO2013006294A1 (en) 2011-06-24 2012-06-25 Flexible impact protective cases, methods of making and methods of using

Publications (3)

Publication Number Publication Date
EP2723212A1 EP2723212A1 (en) 2014-04-30
EP2723212A4 EP2723212A4 (en) 2015-03-04
EP2723212B1 true EP2723212B1 (en) 2019-02-13

Family

ID=47437355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12808015.7A Not-in-force EP2723212B1 (en) 2011-06-24 2012-06-25 Flexible impact protective cases

Country Status (7)

Country Link
EP (1) EP2723212B1 (zh)
JP (1) JP6117777B2 (zh)
KR (1) KR20140044876A (zh)
CN (1) CN103987292B (zh)
CA (1) CA2840519A1 (zh)
TW (1) TW201323289A (zh)
WO (1) WO2013006294A1 (zh)

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Also Published As

Publication number Publication date
TW201323289A (zh) 2013-06-16
WO2013006294A1 (en) 2013-01-10
JP6117777B2 (ja) 2017-04-19
EP2723212A4 (en) 2015-03-04
EP2723212A1 (en) 2014-04-30
JP2014523773A (ja) 2014-09-18
CA2840519A1 (en) 2013-01-10
CN103987292B (zh) 2017-11-17
CN103987292A (zh) 2014-08-13
KR20140044876A (ko) 2014-04-15

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