Patent Publication Number: US-2022211154-A1

Title: Wallet For Mobile Electronic Device Or Mobile Electronic Device Case

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation of U.S. patent application Ser. No. 16/452,085, filed Jun. 25, 2019, which is a continuation-in-part of U.S. patent application Ser. No. 16/241,363, filed Jan. 7, 2019, the disclosures of which are hereby incorporated herein by reference. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates to a wallet for a mobile electronic device or a mobile electronic device case. The wallet has a pocket or pouch configured to hold cards, such as credit cards, debit cards, personal ID cards, driver licenses, and the like. An axle connected with an elastomeric bumper is arranged inside the pocket or pouch. The elastomeric bumper applies a force to an edge of a card arranged in the pocket or pouch so as to securely hold the card in the pocket or pouch. 
     The wallet may be part of a wallet kit that includes a holder that is configured to be attached to the back of the case or mobile electronic device. The holder is also configured and sized to removably hold the wallet so that the wallet can be easily attached to and removed from the case or mobile electronic device via the holder. 
     Wallets for cases and mobile electronic devices have typically been designed either as part of the case (i.e., irremovable therefrom) or as a separate device that attaches to the back of a case or mobile electronic device via adhesive. Both of these designs present problems. For example, wallets that are part of the case can make the case too thick to allow for wireless electric charging (e.g., inductive charging) of the electronic device while it is in the case. This requires a user to remove the electronic device from the case in order to wirelessly charge the electronic device. Adhesive wallets that attach to the back of a case can also make the case too thick for wireless charging. And if such a separate adhesive wallet is attached directly to the back of the electronic device itself, then wireless charging can become completely impossible without removing the adhesive wallet, thereby destroying the adhesive and making the wallet useless for its intended purpose. 
     SUMMARY OF THE INVENTION 
     As such, it is desirable to provide a new wallet for a mobile electronic device or mobile electronic device case that can be removably attached to the back of the case of electronic device without adhesive. This assists in wireless electrical charging. It also makes it easy to temporarily separate the wallet from the case or electronic device so that the wallet can be slipped into a pocket or bag separately for ease of transportation or for being carried into an environment where electrical devices are not permitted. 
     Another advantage of the invention is the ability to attach the wallet to the case or electronic device in multiple configurations or orientations, so that in at least one configuration or orientation the items in the wallet are not accessible and cannot easily slip out or be removed. 
     It is also desirable to provide a new wallet that has a mechanism for securely retaining cards in the wallet without significantly increasing the thickness of the wallet. This may be achieved by incorporating an elastomeric bumper—for example as described below—into the inside of the wallet. The elastomeric bumper may hold cards inside the wallet by applying a force via an applied pressure in a length or width direction to an edge of the cards rather than in a thickness direction to one of the two faces of the cards. By incorporating a device that applies pressure in a length or width direction as opposed to a thickness direction, the thickness of the wallet may be reduced, possibly enabling wireless electrical charging even if the wallet is attached to the case or electronic device. That being said, an elastomeric bumper extending along a length such that the insert applies a force in the thickness direction to one of the two faces of the cards is encompassed by the scope of the present disclosure. 
     According to the present invention there is therefore provided a case for a mobile device as described by way of example below and in the accompanying claims. 
     In one embodiment of the invention there is provided a wallet kit ( 1 ,  101 ,  201 ) for a mobile electronic device or a mobile electronic device case. The wallet kit may include a wallet ( 2 ,  102 ,  202 ) with a housing ( 4 ,  104 ) that may have a front wallet wall ( 5 ,  105 ), a rear wallet wall ( 6 ,  106 ), an upper wallet wall ( 7 ,  107 ), a lower wallet wall ( 8 ,  108 ), a first wallet side wall ( 9 ), and a second wallet side wall ( 10 ). The rear wallet wall may be opposite to the front wallet wall. The upper wallet wall may connect an upper end of the rear wallet wall to an upper end of the front wallet wall. The lower wallet wall may be opposite to the upper wallet wall and may connect a lower end of the rear wallet wall to a lower end of the front wallet wall. The first wallet side wall may be between the upper wallet wall and the lower wallet wall and may connect a first side end of the rear wallet wall to a first side end of the front wallet wall. The second wallet side wall may be between the upper wallet wall and the lower wallet wall and may connect a second side end of the rear wallet wall to a second side end of the front wallet wall. A wallet pocket ( 11 ,  111 ) may be configured to hold a card. The wallet pocket may be formed by the front wallet wall, the rear wallet wall, the upper wallet wall, the lower wallet wall, and the second wallet side wall. A first wallet opening ( 12 ,  112 ) may be formed in the first wallet side wall and may be configured to accept insertion of the card into the wallet pocket. An elastomeric bumper ( 13 ,  113 ,  213 ) may be arranged inside the wallet pocket. 
     In another embodiment, the wallet kit further may include an axle ( 14 ,  114 ) around which the elastomeric bumper may be arranged. 
     In a further embodiment, the bumper may be in the form of a wheel ( 13 ,  113 ), while in another further embodiment, the bumper may be in the form of an elongated shaft or wedge ( 213 ) in which a longitudinal axis defined by the shaft or wedge extends in directions parallel to a direction of insertion of a card or cards ( 215 ) into the wallet pocket. 
     In yet another embodiment, the housing further may have an axle opening ( 27 ) that may be configured to accept insertion of the axle ( 14 ) with the elastomeric bumper ( 13 ) there-around into the wallet pocket. 
     In another embodiment, the front wallet wall ( 105 ) may cover the axle ( 114 ,  214 ) and the elastomeric bumper ( 113 ,  213 ) such that the axle and the elastomeric bumper may be unexposed when the front wallet wall is arranged facing away from the one of the mobile electronic device or the mobile electronic device case. 
     In a further embodiment, in which the housing further may have a second wallet opening ( 15 ) formed in the front wall ( 5 ,  105 ) which allows access to a card when arranged in the wallet pocket ( 11 ,  111 ). The second opening ( 15 ) may be different from the first wallet opening. 
     In yet a further embodiment, the first wallet opening may be formed in the front wall so that the front wallet wall has a shape in the form of an hourglass as a result of the first and the second wallet openings. 
     In another embodiment, the housing may include at least one material selected from the group consisting of hardened plastic materials, rigid or semi-rigid plastic materials, rigid rubber materials, polycarbonate materials, para-aramid materials, wood, and combinations thereof. 
     In yet another embodiment, the wallet kit ( 1 ,  101 ,  201 ) further may include a holder ( 3 ,  103 ) that may have a front side ( 16 ) that may be configured to attach to the wallet ( 2 ,  102 ,  202 ) and a rear side ( 17 ) opposite to the front side that may be configured to attach to a rear of the mobile electronic device or a mobile electronic device case. 
     In a further embodiment, the holder further may have a holder pocket ( 22 ,  122 ) that may be configured to accept the wallet. 
     In yet a further embodiment, the holder ( 3 ) further may have an attachment mechanism ( 23 ,  123 ,  24 ,  124 ) that may be configured to securely attach the wallet to the holder. 
     In another embodiment, the housing of the wallet may have a first attachment recess or opening ( 28 ,  128 ). The attachment mechanism may include a first protrusion ( 23 ,  123 ,  24 ,  124 ) that may be configured to fit into and to be accepted by the first attachment recess or opening when the wallet is arranged in the holder pocket with the rear wallet wall located between the holder and the front wallet wall. 
     In yet another embodiment, the housing of the wallet may have a second attachment recess or opening ( 29 ,  129 ). The attachment mechanism further may include a second protrusion that may be configured to fit into and to be accepted by the second attachment recess or opening when the wallet is arranged in the holder pocket with the rear wallet wall located between the holder and the front wallet wall . 
     In a further embodiment, the housing of the wallet may have a third attachment recess or opening ( 30 ,  130 ). The attachment mechanism may include a first protrusion that may be configured to fit into and to be accepted by the third attachment recess or opening when the wallet is arranged in the holder pocket with the front wallet wall located between the holder and the rear wallet wall. 
     In yet a further embodiment, the housing of the wallet may have a fourth attachment recess or opening ( 31 ,  131 ). The attachment mechanism further may include a second protrusion that may be configured to fit into and to be accepted by the fourth attachment recess or opening when the wallet is arranged in the holder pocket with the front wallet wall located between the holder and the rear wallet wall . 
     In another embodiment, the holder further may have a rear holder wall ( 32 ), an upper holder wall ( 18 ) that extends from an upper end of the rear holder wall ( 32 );, a lower holder wall ( 19 ) that is opposite to the upper holder wall and which extends from a lower end of the rear holder wall, a first holder side wall ( 20 ) that is between the upper holder wall and the lower holder wall and which extends from the rear holder wall , and a second holder side wall ( 21 ) that is between the upper holder wall and the lower holder wall and which extends from the rear holder wall. The holder pocket may be formed by the rear holder wall, the upper holder wall, the lower holder wall, the first holder side wall, and the second holder side wall. 
     In yet another embodiment, the first protrusion may extend from the upper end of the rear holder wall. The first protrusion may be separate from the upper holder wall and may be arranged between a first part ( 18   a ) of the upper holder wall ( 18 ) and a second part ( 18   b ) of the upper holder wall ( 18 ). 
     In a further embodiment, the first protrusion may extend from the lower holder wall. The first protrusion may be part of the lower holder wall. 
     In yet a further embodiment, a first holder opening ( 25 ) may be formed in the first holder side wall. The first holder opening may correspond to and may align with the first wallet opening or the second wallet opening when the wallet is arranged in the holder pocket. 
     In another embodiment, a second holder opening ( 26 ) may be formed in the second holder side wall. The second holder opening may correspond to and may be aligned with the first wallet opening or the second wallet opening when the wallet is arranged in the holder pocket. 
     In yet another embodiment, there is provided a wallet kit ( 1 ,  101 ,  201 ) for a mobile electronic device or a mobile electronic device case. The wallet kit may include a wallet ( 2 ,  102 ,  202 ) and a holder ( 3 ,  103 ). The wallet may include a housing ( 4 ,  104 ) that may have a front wallet wall ( 5 ,  105 ), a rear wallet wall ( 6 ,  106 ), an upper wallet wall ( 7 ,  107 ), a lower wallet wall ( 8 ,  108 ), a first wallet side wall ( 9 ), and a second wallet side wall ( 10 ). The rear wallet wall may be opposite to the front wallet wall. The upper wallet wall may connect an upper end of the rear wallet wall to an upper end of the front wallet wall. The lower wallet wall may be opposite to the upper wallet wall and may connect a lower end of the rear wallet wall to a lower end of the front wallet wall. The first wallet side wall ( 9 ) may be between the upper wallet wall and the lower wallet wall and may connect a first side end of the rear wallet wall to a first side end of the front wallet wall. The second wallet side wall may be between the upper wallet wall and the lower wallet wall and may connect a second side end of the rear wallet wall to a second side end of the front wallet wall. A wallet pocket ( 11 ,  111 ) may be configured to hold a card ( 215 ). The wallet pocket may be formed by the front wallet wall, the rear wallet wall, the upper wallet wall, the lower wallet wall, and the second wallet side wall. A first wallet opening ( 12 ,  112 ) may be formed in the first wallet side wall and may be configured to accept insertion of the card into the wallet pocket . The holder may have a front side ( 16 ) that may be configured to be removably attached to the wallet and a rear side ( 17 ) opposite to the front side ( 16 ) that may be configured to attach to a rear of the mobile electronic device or the mobile electronic device case. 
     In a further embodiment, the housing of the wallet may have a first attachment recess or opening ( 28 ,  128 ). The holder further may have an attachment mechanism ( 23 ,  123 ,  24 ,  124 ) that may be configured to securely attach the wallet to the holder. The attachment mechanism may include a first protrusion ( 23 ,  123 ,  24 ,  124 ) that may be configured to fit into and to be accepted by the first attachment recess or opening when the wallet is arranged in a holder pocket ( 22 ) defined by the holder with the rear wallet wall located between the holder and the front wallet wall. 
     In yet another embodiment, the holder may include an attachment mechanism to be attached to, such as by being clipped into, a rear of the mobile electronic device or the mobile electronic device case. 
     It is noted that the features of the above-described embodiments are not exclusive to each other, and that any one of the above embodiments/features can be combined with one or more of the other embodiments/features to arrive at further embodiments. 
     The inventive case can be designed to fit a variety of mobile devices—such as smartphones and other portable electronic devices. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete appreciation of the subject matter of the present invention and various advantages thereof may be realized by reference to the following detailed description and the accompanying drawings, in which: 
         FIG. 1  is an exploded perspective view of a wallet kit in accordance with an embodiment of the invention, shown in a state with a wallet of the kit detached from a holder of the kit; 
         FIG. 2  is a perspective view of the wallet of  FIG. 1 ; 
         FIG. 3  is a front view of the wallet of  FIG. 2 ; 
         FIG. 4  is a rear view of the wallet of  FIG. 2 ; 
         FIG. 5  is a left side view of the wallet of  FIG. 2 ; 
         FIG. 6  is a right side view of the wallet of  FIG. 2 ; 
         FIG. 7  is a top view of the wallet of  FIG. 2 ; 
         FIG. 8  is a bottom view of the wallet of  FIG. 2 ; 
         FIG. 9  is a perspective view of the holder of  FIG. 1 ; 
         FIG. 10  is a front view of the holder of  FIG. 9 ; 
         FIG. 11  is a rear view of the holder of  FIG. 9 ; 
         FIG. 12  is a left side view of the holder of  FIG. 9 ; 
         FIG. 13  is a right side view of the holder of  FIG. 9 ; 
         FIG. 14  is a top view of the holder of  FIG. 9 ; 
         FIG. 15  is a bottom view of the holder of  FIG. 9  in accordance with an embodiment of the invention; 
         FIG. 16  is a perspective view of the wallet kit of  FIG. 1  i, shown in a state with the wallet connected to the holder in a first orientation; 
         FIG. 17  is a perspective view of the wallet kit of  FIG. 1 , shown in a state with the wallet connected to the holder in a third orientation; 
         FIG. 18A  is a perspective view of a wallet kit in accordance with another embodiment of the invention, shown in a state with a wallet of the kit connected to a holder of the kit; 
         FIG. 18B  is a front cross-sectional view of the wallet kit taken along lines  18 B- 18 B as shown in  FIG. 18A ; 
         FIG. 18C  is a left side cross-sectional view of the wallet kit taken along lines  18 C- 18 C as shown in  FIG. 18A ; 
         FIG. 19  is a front view of the wallet kit of  FIG. 18A ; 
         FIG. 20  is a rear view of the wallet kit of  FIG. 18A ; 
         FIG. 21  is a right side view of the wallet kit of  FIG. 18A ; 
         FIG. 22  is a left side view of the wallet kit of  FIG. 18A ; 
         FIG. 23  is a top view of the wallet kit of  FIG. 18A ; 
         FIG. 24  is a bottom view of the wallet kit of  FIG. 18A ; 
         FIG. 25  is an exploded perspective view of the wallet kit of  FIG. 18A , shown in a state with the wallet detached from the holder; 
         FIG. 26  is a rear view of the wallet of  FIG. 18A ; 
         FIG. 27  is a perspective view of the holder of  FIG. 18A ; 
         FIG. 28  is a front view of the holder of  FIG. 18A ; 
         FIG. 29  is a rear view of the holder of  FIG. 18A ; 
         FIG. 30  is a right side view of the holder of  FIG. 18A ; 
         FIG. 31  is a left side view of the holder of  FIG. 18A ; 
         FIG. 32  is a top view of the holder of  FIG. 18A ; 
         FIG. 33  is a bottom view of the holder of  FIG. 18A ; 
         FIG. 34A  is a perspective cross-sectional view of a wallet kit in accordance with another embodiment of the invention, shown with a set of cards inserted into the wallet kit; and 
         FIG. 34B  is a left side cross-sectional view of the wallet kit of  FIG. 34A . 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     It is to be understood that the figures and descriptions of the present invention have been simplified to illustrate elements that are relevant for a clear understanding of the present invention, while eliminating, for purposes of clarity, many other elements which are conventional in this art. Those of ordinary skill in the art will recognize that other elements are desirable for implementing the present invention. However, because such elements are well known in the art, and because they do not facilitate a better understanding of the present invention, a discussion of such elements is not provided herein. 
     The present invention will now be described in detail on the basis of exemplary embodiments. It is noted that any numerical ranges disclosed herein are included to individually disclose every sub-range and number, both whole integer and partial fraction, within the disclosed range. For example, a disclosed range of 1-100 is intended to individually disclose 20-90, 40-80, 30.5-50.2, 20, 67.3, 84.512924, and every other range and number that falls within the recited range. 
     Referring now to  FIGS. 1-17 , the wallet  2  is formed by a housing  4  that has a front wallet wall  5  a rear wallet wall  6 , an upper wallet wall  7 , a lower wallet wall  8 , a first wallet side wall  9 , a second wallet side wall  10 . 
     The upper wallet wall  7  connects an upper end of the rear wallet wall  6  to an upper end of the front wallet wall  5 . The lower wallet wall  8  is opposite to the upper wallet wall  7 , and connects a lower end of the rear wallet wall  6  to a lower end of the front wallet wall  5 . The first wallet side wall  9  is between the upper wallet wall  7  and the lower wallet wall  8 , and connects a first side end of the rear wallet wall  6  to a first side end of the front wallet wall  5 . The second wallet side wall  10  is between the upper wallet wall  7  and the lower wallet wall  8 , and connects a second side end of the rear wallet wall  6  to a second side end of the front wallet wall  5 . 
     The front, rear, upper, lower, and second wallet side walls ( 5 ,  6 ,  7 ,  8 ,  10 ) form a wallet pocket  11  that is configured to hold a card, such as an electronic payment card, credit card, debit card, personal ID card, driver license, RFID card, electronic access card, and the like. A first wallet opening  12  is formed in the first wallet side wall  9 , and is configured to accept insertion of the card into the wallet pocket  11 . 
     The housing  4  is preferably formed from a rigid or hard material to create a rigid/hard shell which provides at least some impact protection as well as protection from being punctured by impacts with sharp objects. Examples of suitable hard/rigid materials include hardened plastic material, a rigid or semi-rigid plastic material, a rigid/hard rubber material, a polycarbonate material, a para-aramid material, wood, and any combination thereof, and may be any color or texture. Preferred materials include thermosetting plastics with a hard durometer having shore 30D to shore 100D, polycarbonate, poly(methyl methacrylate) (“PMMA”), acrylonitrile butadiene styrene (“ABS”), PMMA, polyethylene terephthalate (“PET”), high durometer thermoplastic elastomers (“TPEs”) and thermoplastic polyurethanes (“TPUs”) having shore 30D to shore 100D, and any combination thereof. Preferably, the hard/rigid material of the housing  4  is non-elastomeric. The hard protective shell may be designed to mimic the finish of existing mobile electronic devices, such as phones, MP3/4 players, tablets, laptops, and other mobile electronic devices. Many users like the feel of the original phone and would like to maintain that feel. Alternatively, the exterior of the housing  4  could be formed with a textured surface to make it easier to grip and hold the wallet  2 . 
     The housing  4  may also include or be formed from at least one RF-shielding material that blocks, shields, or substantially interferes with RF (radio frequency) and/or RFID (radio-frequency identification) signals. Examples of suitable RF-shielding materials include metals (e.g., copper, nickel, a ferrous metal, ferrous sheet metal, steel plate, metal foils, and the like), a galvanized sheet metal plate, a sheet metal plate having a thickness of between 0.25 and 0.75 mm, and ferromagnetic materials. 
     Preferably the housing  4  is a single monobody unit formed, preferably molded, from a single piece of material. Alternatively, the housing  4  may be formed from two pieces of material that are bonded together, such as by ultrasonic welding or co-molding. 
     An elastomeric bumper  13  around an axle  14  is arranged inside the wallet pocket  11 . In one embodiment, the elastomeric bumper  13  and axle  14  are inserted into the wallet pocket  11  through an axle opening  27  formed in the housing  4 . The elastomeric bumper  13  is arranged in the wallet pocket  11  at a distance from the upper wallet wall  7  that is slightly less than the length dimension of the card to be arranged in the wallet pocket  11 . In this way, the elastomeric bumper  13  deforms when the card is inserted into the wallet pocket  11  so as to apply pressure or force to the card to bias the card against the upper wallet wall  7 . This biasing force securely retains the card in the wallet pocket  11  and prevents the card from accidentally falling out. 
     The elastomeric bumper  13  is preferably formed from a soft elastomeric material. Examples of suitable materials include thermoplastic elastomers (“TPEs”), thermoplastic polyurethane (“TPU”), polyolefins, silicone, rubber, and any combination thereof. 
     The axle  14  is preferably formed from any one of the rigid or hard materials listed above for the wallet  2 , or any combination thereof. 
     The housing  4  also has a second wallet opening  15  formed in the front wall  5  which allows access to a card when arranged in the wallet pocket  11 . This second wallet opening  15  can be used as a thumb or finger hole by a user to assist in removing objects inside the wallet pocket  11  via the first wallet opening  12 . 
     In the embodiment in the drawings, the first wallet opening  12  is also formed the front wall  5  so that the front wall  5  has a shape like an hourglass as a result of the first and second wallet openings  12 ,  15 . 
     The wallet  2  may be configured to attach directly to a mobile electronic device or mobile electronic device case, such as by an adhesive or adhesive strip arranged on the rear wallet wall  6 . Preferably though, the wallet  2  does not include any adhesive or adhesive strip, but instead attaches to the electronic device or case via a holder  3 , as will be described below. 
     Alternatively, the wallet  2  may be part of a wallet kit  1  that additionally includes a holder  3  for holding the wallet  2  to a mobile electronic device or mobile electronic device case, thereby eliminating the need for an adhesive or adhesive strip arranged on the rear wallet wall  6 . The holder  3  has a front side  16  and a rear side  17 . The front side  16  is configured to attach to the wallet  2 . The rear side  17  is configured to attach to a rear of the mobile electronic device or a mobile electronic device case, such as by an adhesive or adhesive strip arranged on the rear side  17 . In some arrangements, the adhesive may have a pull strength of at least 25 lbs., and more preferably at least 50 lbs. The holder  3  has a holder pocket  22  configured to accept the wallet  2 . 
     In one embodiment, the holder  3  can be part of and integral with a case for a mobile electronic device. This would eliminate the need for an adhesive or adhesive strip arranged on the rear side  17  of the holder  3 . In all other respects, the integral holder  3  would be similar to and have the same components of the separate adhesively attachable holder  3 . 
     An attachment mechanism ( 23 ,  24 ) is configured to securely attach the wallet  2  to the holder  3 . For example, the housing  4  of the wallet  2  may have a first attachment recess or opening  28 , and the attachment mechanism ( 23 ,  24 ) may include a first protrusion  23  configured to fit into and be accepted by the first attachment recess or opening  28  when the wallet  2  is arranged in the holder pocket  22  with the rear wallet wall  6  located between the holder  3  and the front wallet wall  5 . 
     The housing  4  of the wallet  2  may also have a second attachment recess or opening  29 . The attachment mechanism ( 23 ,  24 ) may then further include a second protrusion  24  configured to fit into and be accepted by the second attachment recess or opening  29  when the wallet  2  is arranged in the holder pocket  22  with the rear wallet wall  6  located between the holder  3  and the front wallet wall  5 . 
     Preferably the first and second protrusions  23 ,  24  are formed symmetrically, as are the first and second attachment recesses or openings  28 ,  29 . In this way, the wallet  2  can be secured inside the holder pocket  22  with either the first protrusion  23  arranged in the first attachment recess or opening  28  and the second protrusion  24  arranged in the second attachment recess or opening  29 , or the first protrusion  23  arranged in the second attachment recess or opening  29  and the second protrusion  24  arranged in the first attachment recess or opening  28 . This allows the wallet  2  to be held by the holder  3  in at least two different orientations. 
     The housing  4  of the wallet  2  may also have a third attachment recess or opening  30 . The first protrusion  23  of the attachment mechanism ( 23 ,  24 ) may then be configured to fit into and be accepted by the third attachment recess or opening  30  when the wallet  2  is arranged in the holder pocket  22  with the front wallet wall  5  located between the holder  3  and the rear wallet wall  6 . 
     The housing  4  of the wallet  2  may also have a fourth attachment recess or opening  31 . The second protrusion  24  of the attachment mechanism ( 23 ,  24 ) may then be configured to fit into and be accepted by the fourth attachment recess or opening  29  when the wallet  2  is arranged in the holder pocket  22  with the front wallet wall  5  located between the holder  3  and the rear wallet wall  6 . 
     Preferably the first and second protrusions  23 ,  24  are formed symmetrically, as are the third and fourth attachment recesses or openings  30 ,  31 . In this way, the wallet  2  can be secured inside the holder pocket  22  with either the first protrusion  23  arranged in the third attachment recess or opening  30  and the second protrusion  24  arranged in the fourth attachment recess or opening  31 , or the first protrusion  23  arranged in the fourth attachment recess or opening  31  and the second protrusion  24  arranged in the third attachment recess or opening  30 . This allows the wallet  2  to be held by the holder  3  in an additional two different orientations. In this way, the wallet  2  may be held by the holder  3  in four different orientations. 
     When the wallet  2  is arranged in the holder pocket  22  in either of the first or second orientations with the rear wallet wall  6  located between the holder  3  and the front wallet wall  5  ( FIG. 16 ), the portion of the first wallet opening  12  formed in the front wallet wall  5  and the second wallet opening  15  are able to be accessed by a user so that one or more cards can be inserted into and removed from the wallet pocket  11 . 
     On the other hand, when the wallet  2  is arranged in the holder pocket  22  in either of the third or fourth orientations with the front wallet wall  5  located between the holder  3  and the rear wallet wall  6  ( FIG. 17 ), then the portion of the first wallet opening  12  formed in the front wallet wall  5  and the second wallet opening  15  are covered by the rear wallet wall  6 . 
     While a user may be able to insert cards into the wallet pocket  11  when the wallet  2  is arranged in the holder pocket  22  in either of the third or fourth orientations ( FIG. 17 ), such a user cannot access any of the cards arranged in the wallet pocket  11  to remove them without first detaching the wallet  2  from the holder  3 . The covering by the rear wallet wall  6  thus prevents cards from being accidentally removed from the wallet pocket  11  or easily removed from the wallet pocket  11  by a thief. This covering also provides visual security, as the cards may be fully covered, allowing the user to feel safer in public. 
     The holder  3  further has a rear holder wall  32 . An upper holder wall  18  extends from an upper end of the rear holder wall  32 . A lower holder wall  19  is opposite to the upper holder wall  18 , and extends from a lower end of the rear holder wall  32 . A first holder side wall  20  is arranged between the upper holder wall  18  and the lower holder wall  19 , and extends from the rear holder wall  32 . A second holder side wall  21  is arranged between the upper holder wall  18  and the lower holder wall  19 , and extends from the rear holder wall  32 . The holder pocket  22  is formed by the rear holder wall  32 , the upper holder wall  18 , the lower holder wall  19 , the first holder side wall  20 , and the second holder side wall  21 . 
     While the embodiments of the drawings show the rear holder wall  32  as a solid wall, the rear holder wall  32  may alternatively include an opening or window to expose the rear side of the case or mobile electronic device to assist in wireless electrical charging. 
     Preferably the first protrusion  23  extends from the upper end of the rear holder wall  32 , and is separate from the upper holder wall  18  and arranged between a first part  18   a  of the upper holder wall  18  and a second part  18   b  of the upper holder wall  18 . This allows the first protrusion  23  to be a flexible protrusion that bends or rotates, with respect to the rear holder wall  32 , away from the upper holder wall  18 . This flexible protrusion  23  makes it easier to connect the wallet  2  to the holder  3  and to remove the wallet  2  from the holder  3 . 
     The second protrusion  24  may extend from the lower holder wall  19 , the first protrusion being part of and integral to the lower holder wall  19 . In this way the second protrusion  24  is an inflexible rigid protrusion that does not bend or rotate with respect to the rear holder wall  32  or the lower holder wall  19 . This rigid protrusion  24  assists in securely connect the wallet  2  to the holder  3  so that the wallet  2  does not accidentally or unintentionally disconnect from the holder  3 . 
     While the embodiments in the drawings show the first protrusion  23  as a flexible protrusion, the first protrusion  23  may instead be formed as a rigid protrusion. Similarly, while the embodiments in the drawings show the second protrusion  24  as an inflexible rigid protrusion, the second protrusion  24  may instead be formed as a flexible protrusion. As such, both the first and second protrusions  23 ,  24  may be formed as flexible protrusions, or both the first and second protrusion  23 ,  24  may be formed as rigid protrusions. Preferably, at least one of the first and second protrusions  23 ,  24  is a flexible protrusion to assist in attaching and removing the wallet  2  to and from the holder  3 . 
     The holder  3  may also include a first holder opening  25  formed in the first holder side wall  20  to correspond to and align with the first wallet opening  12  when the wallet  2  is arranged in the holder pocket  22  in the first or fourth orientations, or the second wallet opening  15  when the wallet  2  is arranged in the holder pocket  22  in the second or third orientations. 
     As shown, the holder  3  optionally may include a second holder opening  26  formed in the second holder side wall  21  to correspond to and align with second wallet opening  15  when the wallet  2  is arranged in the holder pocket  22  in the first or fourth orientations, or the first wallet opening  12  when the wallet  2  is arranged in the holder pocket  22  in the second or third orientations. 
     While the embodiments of the drawings show four attachment recesses or openings  28 - 31 , the housing  4  may alternatively have only two attachment recesses or openings, each attachment recess or opening being formed in the center of the upper and lower wallet walls  7 ,  8  rather than offset therefrom. This would allow the wallet  2  to still be arranged in the four orientations described above, but with fewer recesses or openings that could potentially get clogged with debris when not in use. 
     In some alternative arrangements, the holder  3  may include additional protrusions on holder rear side  17 , which may be but are not limited to being similar to flexible and rigid protrusions  23 ,  24  and their alternative configurations discussed previously herein. Such arrangements would allow the holder  3  to be attached to a mobile device or a case for a mobile device via recesses or openings on such mobile device or mobile device case corresponding to the additional protrusions on the holder rear side  17  without the use of an adhesive. 
     The outside surface of the wallet  2  may be provided with a scratch resistant UV hardcoat, which resists scratches and prevents discoloration of the case due to UV exposure. 
     The outside surface of the wallet  2  may have an antimicrobial material coated on one or more surfaces (e.g., one or more exterior surfaces of the wallet  2  facing away from the wallet pocket  11 ) or embedded within the housing  4 . 
     Examples of antimicrobial materials include silver or silver alloy (e.g., silver sodium hydrogen zirconium phosphate), copper or copper alloy, organosilanes, quaternary ammonium compounds (e.g., dimethyloctadecyl (3-trimethoxysilyl propyl) ammonium chloride, alkyldimethylbenzylammonium chloride, and didecyldimethylammonium chloride), chlorhexidine, chlorhexidine incorporated hydroxyapatite materials, chlorhexidine-containing polymers (e.g., chlorhexidine-containing polylactide), and antibiotics (e.g., gentamicin, cephalothin, carbenicillin, amoxicillin, cefamandol, tobramycin, vancomycin). 
     Examples of antimicrobial coatings include coatings containing one or more of the above antimicrobial materials, chlorhexidine-containing polylactide coatings on an anodized surface, and polymer and calcium phosphate coatings with chlorhexidine. 
     In addition, or alternatively, the housing  4  may include an antimicrobial surface treatment. For example, one or more surfaces (e.g., one or more exterior surfaces of the wallet  2  facing away from the wallet pocket  11 ) may be formed as or made to be a superhydrophobic surface—such as a low energy, generally rough surface on which water has a contact angle (i.e., the angle at which the liquid—vapor interface meets the solid—liquid interface) of &gt;150°. 
     Forming the housing  4  with an antimicrobial material, antimicrobial coating, antimicrobial surface treatment, or any combination thereof helps to keep the outside of the wallet  2  clean and reduce/minimize the presence of microbes (e.g., bacteria, fungi, viruses, etc.), thereby helping to prevent the hand-to-hand spread of related sicknesses, illnesses, or diseases. 
     The holder  3  optionally may be configured so that there are no gaps between the housing  4  of the wallet  2  and the surfaces of the holder  3  forming the holder pocket  22 . This enables the holder  3  to have a very solid connection to the wallet  2 . 
     The walls  5 ,  6 ,  7 ,  8 ,  9 ,  10 ,  18 ,  19 ,  20 ,  21 ,  32  of each of the housing  4  and holder  3  are preferably 0.5-4.0 mm thick. Preferably one or more of the walls is 0.6-3.0 mm thick. More preferably, one or more of the walls is 0.8-2.0 mm thick. Even more preferably, one or more of the walls is 0.9-1.3 mm thick. 
     The holder  3  may be formed from any of the rigid or hard materials listed above for the wallet  2 , or any combination thereof. Preferably the holder  2  is not formed from and does not include any of the RF-shielding materials listed above so that the holder  3  does not interfere with wireless electrical charging of an electronic device connected to the holder  3 . As such, it is preferably to form the holder  2  from a rigid or hard nonmetallic material that is RF-transparent such that RF transmissions can be transmitted through the holder  3 . Examples of suitable nonmetallic RF-transparent hard/rigid materials include hardened plastic material, a rigid or semi-rigid plastic material, a rigid/hard rubber material, a polycarbonate material, a para-aramid material, wood, glass, quartz, and any combination thereof, and may be any color or texture. Preferred materials include thermosetting plastics with a hard durometer having shore 30D to shore 100D, polycarbonate, poly(methyl methacrylate) (“PMMA”), acrylonitrile butadiene styrene (“ABS”), PMMA, polyethylene terephthalate (“PET”), high durometer thermoplastic elastomers (“TPEs”) and thermoplastic polyurethanes (“TPUs”) having shore 30D to shore 100D, and any combination thereof. The holder  3  may be designed to mimic the finish of existing mobile devices, such as phones, MP3/4 players, tablets, laptops, electronic safety devices, and other mobile electronic devices. Many users like the feel of the original electronic device and would like to maintain that feel. The material used for the holder  3  preferably has a low coefficient of friction. This allows the electronic device attached to the holder  3  to be slipped in and out of pockets easily with little resistance and without gripping to clothing materials like elastomeric materials do. 
     Referring now to  FIGS. 18A-33 , a wallet kit  101  includes a wallet  102  and a holder  103  that is attachable to the wallet  102  such that a rear wallet wall  106  or a front wallet wall  105  of the wallet faces a holder pocket  122  of the holder  103 . Such attachment of the wallet  102  and the holder  103  is possible in two orientations of each of these interfaces as described previously herein with respect to wallet  1 . 
     The wallet  102  is the same as the wallet  2  or the variations of the wallet  2  described previously herein with specific exceptions. First, the wallet  102  includes an upper wallet part  133  attachable to lower wallet part  134  to define wallet housing  104 . As in the example shown, the upper and lower wallet parts  133 ,  134  may be snapped together. In some arrangements, the upper and lower wallet parts may be attached by way of an interference fit, by an adhesive, or by any combination of a snap-fit, an interference fit, and an adhesive. 
     Second, the wallet housing  104  defines a first wallet opening  112  that is longer at the interface of the first wallet opening with a front wallet wall  105  of the wallet housing than the corresponding interface of the wallet  2 . In this manner, the first wallet opening  112  provides access to a greater surface area of an exposed surface of a card that may be inserted into a wallet pocket  111  of the wallet  102  than is provided by the first wallet opening  12 . 
     Third, as shown in  FIGS. 18B and 18C , a bumper cavity  136  in the wallet housing  104  configured for receiving and maintaining elastomeric bumper  113  arranged around axle  114  does not extend to the exposed surface of the front wallet wall  105  such that the wallet housing  104  excludes the axle opening  27  and is flush in the area of the front wallet wall  105  corresponding to the area of the front wallet wall  5  where the axle opening  27  is located in the wallet housing  4 . In this manner, the bumper  113  and the axle  114  is not exposed by the wallet  102  and is not susceptible to being removed through the exposed surface of the front wallet wall  105 . Indeed, the axle  114  does not include the cap included on the axle  14  that provides the cover for axle opening  27 . The use of the separable upper and lower wallet parts  133 ,  134  allows the axle  114  to be inserted between the upper and lower wallet parts before assembly of these parts. 
     Fourth, each of first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  defined by the wallet housing  104  have a greater width in a direction along the respective upper and lower wallet walls  107 ,  108  than the respective widths of counterpart first attachment recess or opening  28 , second attachment recess or opening  29 , third attachment recess or opening  30 , and fourth attachment recess or opening  31  defined by the wallet housing  4  in a direction along the respective upper and lower wallet walls  7 ,  8 . In this manner, each of first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  are configured to receive wider flexible protrusion  123  and wider rigid protrusion  124  of the holder  103 . 
     The holder  103  is the same as the holder  3  or the variations of the holder  3  with two other specific differences in addition to the wider protrusions  123 ,  124 . The first of these other differences is that the flexible protrusion  123  of the holder  103  has a greater length in a direction parallel to the holder first and second holder side walls  120 ,  121  than the length of the flexible protrusion  23  of the holder  3  in a direction parallel to the holder first and second holder side walls  20 ,  21 . As such, the flexible protrusion  123  has sufficient surface area such that a user may press the flexible protrusion like a button to release the wallet  102  when the wallet is assembled to the holder  103 , i.e., when the flexible protrusion  123  is received in any one of the first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  and the rigid protrusion  124  is received in the opposing first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131 . In this manner, a greater, and preferably a much greater, amount of pull force may need to be applied to the wallet  102  to separate the wallet  102  from the holder  103  than is required to be applied to the wallet  2  to separate the wallet  2  from the holder  3 . In such configurations, a flange portion of protrusions  123 ,  124  to be received in each of first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  and such recesses or openings themselves preferably may be configured such that at least a 0.8 mm depth (in a direction towards a middle of the holder  103 ) of the flange portion of the protrusions is received in opposing ones of the recesses or openings when the wallet  102  is connected with the holder  103 . 
     The second of the other differences is that the holder pocket  122  of the holder  103  includes a shallow recess  135  that extends inwardly from the holder front side  116  and a holder bumper  137  that may be received in the shallow recess. Examples of suitable materials for the holder bumper  137  include thermoplastic elastomers (“TPEs”), thermoplastic polyurethane (“TPU”), polyolefins, silicone, rubber, and any combination thereof. Upon the placement of the wallet  102  against the holder  103 , the wallet  102  compresses the holder bumper  137  such that the holder bumper reacts to push the respective first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  against flange portions of the protrusions  123 ,  124  received in such recesses or openings. In particular, the holder bumper  137  pushes the wallet  102  such that the flange portions of the protrusions  123 ,  124  are maintained against the side of the respective first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  into which the protrusions are received that is closest to the holder  103 . In this manner, play between the flange portions of the protrusions and the respective first attachment recess or opening  128 , second attachment recess or opening  129 , third attachment recess or opening  130 , and fourth attachment recess or opening  131  into which the protrusions are received is reduced or eliminated, thereby dampening noise or other vibration due to contact between the wallet  102  and the holder  103 . 
     Referring now to  FIGS. 34A and 34B , a wallet kit  201  is the same as the wallet kit  101  with the exception that the wallet kit  201  includes an elastomeric bumper  213 , in place of the bumper  113 , arranged around the axle  114 . In this example, the elastomeric bumper  213  and the axle  114  are placed between the upper and lower wallet parts  133 ,  134  in the same manner that the elastomeric bumper  113  and the axle  114  are placed between the upper and lower wallet parts. As shown in  FIG. 34A , the elastomeric bumper  213  acts as a wedge such that upon insertion of one or more cards  215  into the pocket  111  of the wallet  202 , the bumper  213  presses the card or cards  215  against an upper wallet wall defined by the upper and lower wallet parts  133 ,  134  in the same manner that the bumpers  13 ,  113  press a card or cards inserted into the respective wallets  2 ,  102 . The elastomeric bumper  213  extends a greater distance into the pocket  111  than the bumpers  13 ,  113  to provide a greater surface area for contacting the card or cards  215  and thus exerts a greater force against the cards to hold the cards in place in the wallet  202  when the axle  114  is placed in the corresponding bumper cavity  136  defined by the upper and lower wallet parts  133 ,  134 . 
     It is noted that the terminology used above is for the purpose of reference only, and is not intended to be limiting. For example, terms such as “upper”, “lower”, “above”, “below”, “rightward”, “leftward”, “clockwise”, and “counterclockwise” refer to directions in the drawings to which reference is made. As another example, terms such as “inward” and “outward” may refer to directions toward and away from, respectively, the geometric center of the component described. As a further example, terms such as “front”, “rear”, “side”, “left side”, “right side”, “top”, “bottom”, “horizontal”, and “vertical” describe the orientation of portions of the component within a consistent but arbitrary frame of reference which is made clear by reference to the text and the associated drawings describing the component under discussion. Such terminology will include the words specifically mentioned above, derivatives thereof, and words of similar import. 
     While this invention has been described in conjunction with the specific embodiments outlined above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. Indeed, the disclosure set forth herein includes all possible combinations of the particular features set forth above, whether specifically disclosed herein or not. For example, where a particular feature is disclosed in the context of a particular aspect, arrangement, configuration, or embodiment, that feature can also be used, to the extent possible, in combination with and/or in the context of other particular aspects, arrangements, configurations, and embodiments of the invention, and in the invention generally. Moreover, the disclosure set forth herein includes the mirror image, i.e., mirror configuration, taken from any perspective of any drawing or other configuration shown or described herein. Accordingly, the preferred embodiments of the invention as set forth above are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the inventions as defined in the following claims. 
     In addition, it is noted that citation or identification of any document in this application is not an admission that such document is available as prior art to the present invention. 
     REFERENCE NUMBERS 
     
         
           1 ,  101 ,  201  wallet kit 
           2 ,  102 ,  202  wallet 
           3 ,  103  holder 
           4 ,  104  wallet housing 
           5 ,  105  front wallet wall 
           6 ,  106  rear wallet wall 
           7 ,  107  upper wallet wall 
           8 ,  108  lower wallet wall 
           9  first wallet side wall 
           10  second wallet side wall 
           11 ,  111  wallet pocket 
           12 ,  112  first wallet opening 
           13 ,  113 ,  213  elastomeric bumper 
           14 ,  114  axle 
           15  second wallet opening 
           16  holder front side 
           17  holder rear side 
           18  upper holder wall 
           19  lower holder wall 
           20 ,  120  first holder side wall 
           21 ,  121  second holder side wall 
           22 ,  122  holder pocket 
           23 ,  123  flexible protrusion 
           24 ,  124  rigid protrusion 
           25  first holder opening 
           26  second holder opening 
           27  axle opening 
           28 ,  128  first attachment recess or opening 
           29 ,  129  second attachment recess or opening 
           30 ,  130  third attachment recess or opening 
           31 ,  131  fourth attachment recess or opening 
           32  rear holder wall 
           133 ,  233  upper wallet part 
           134 ,  234  lower wallet part 
           135  shallow recess 
           136  bumper cavity 
           137  holder bumper 
           215  card or cards