Mobile device charger

• US 10,461,552 B2
• Filed: 06/29/2016
• Issued: 10/29/2019
• Est. Priority Date: 06/29/2015
• Status: Active Grant

• Current Assignee: Bibicord, Inc.
• Original Assignee: Bibicord, Inc.
• Inventors: Loewen, Joanne
• Primary Examiner(s): Berhanu, Samuel
• Application Number:
  US15/197,413
• Publication Number:
  US 20160380446A1
• Time in Patent Office: 1,217 Days
• Field of Search: 320107
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A mobile device charger with a folding electrical plug and a battery on a key chain with a retractable cord is disclosed. Our invention allows the user to charge their mobile device either from the battery or using an electrical outlet while it is still attached to their bag so that they do not forget it in the outlet. Our invention allows the user to protect the cord and the metal tip used to charge mobile devices because the cord and metal tip retracts into the protective housing.

Claims

1. A mobile device charger, comprising:

an enclosure comprising;

a cylindrical shape defined by a first circular surface having a perimeter and connected to a second circular surface having a perimeter by a curved connecting surface having a first end at the perimeter of the first circular surface and a second end at the perimeter of the second circular surface, the perimeters of the first and second circular surface beveled at the connections to the curved connecting surface, and

an electrical plug;

an AC/DC converter circuit, comprising;

a rectifier,

a flyback controller,

a transformer,

a wake-up monitor and synchronous rectifier, and

an active charge indicator; and

a retractable cable with a charging connector extending out from the enclosure, which cable is able to be extended from the enclosure while in use and retracted into the enclosure for storage,

wherein the wake-up monitor and synchronous rectifier is configured to send a series of pulses through the transformer to signal the flyback controller to shut down when there is no mobile device connected to the mobile device charger.

2. A mobile device charger according to claim 1 wherein the electrical plug comprises a foldable electrical plug that, in a first configuration, sits flush with the enclosure and, in a second configuration, folds outward to connect to a power outlet.

3. A mobile device charger according to claim 1 with a pawl which holds the cable in a first configuration where the cable is extended from the enclosure until the cable is retracted into a second configuration inside the enclosure by a mechanism for displacing the pawl.

4. A mobile device charger, comprising:

an enclosure with a foldable electrical plug that, in a first configuration, sits flush with the enclosure and, in a second configuration, folds outward to connect to a power outlet;

a printed circuit board inside the enclosure and in electrical communication with the foldable electrical plug, the printed circuit board comprising an AC/DC converter circuit and two slipjoint contacts;

a retractable cable with a charging connector extending out from the enclosure, which cable is able to be extended from the enclosure while in use and retracted into the enclosure for storage; and

an internal battery,

wherein the printed circuit board is configured to provide current to the retractable cable via the two slipjoint contacts, and

wherein the AC/DC converter circuit comprises;

a rectifier;

a flyback controller;

a transformer;

a wake-up monitor and synchronous rectifier;

and an active charge indicator,

wherein the wake-up monitor and synchronous rectifier is configured to send a series of pulses through the transformer to signal the flyback controller to shut down when there is no mobile device connected to the mobile device charger.

5. A mobile device charger according to claim 4 with a pawl which holds the cable in a first configuration where the cable is extended from the enclosure until the cable is retracted into a second configuration inside the enclosure by a mechanism for displacing the pawl.

6. A mobile device charger according to claim 4 having a cylindrical shape.

7. A mobile device charger according to claim 4 having beveled edges.

8. A mobile device charger, comprising:

an enclosure with a foldable electrical plug and beveled edges;

an AC/DC converter circuit, comprising;

a rectifier,

a flyback controller,

a transformer,

a wake-up monitor and synchronous rectifier, and

an active charge indicator;

a retractable cable with a charging connector extending out from the enclosure, which cable is able to be extended from the enclosure while in use and retracted into the enclosure for storage; and

a connector on the enclosure configured to connect to a chain,

wherein the wake-up monitor and synchronous rectifier is configured to send a series of pulses through the transformer to signal the flyback controller to shut down when there is no mobile device connected to the mobile device charger.

9. A mobile device charger according to claim 8 with a foldable electrical plug that, in a first configuration, sits flush with the enclosure and, in a second configuration, folds outward to connect to a power outlet.

10. A mobile device charger according to claim 8 with a pawl which holds the cable in a first configuration where the cable is extended from the enclosure until the cable is retracted into a second configuration inside the enclosure by a mechanism for displacing the pawl.

11. A mobile device charger according to claim 8 having a cylindrical shape.

12. A mobile device charger according to claim 8 having an internal battery.

13. A mobile device charger according to claim 8 having a clip attached to the charger via a chain connected on one end to the clip and on the other end to the connector in the enclosure.