# US 9,438,298 B2 · Floating base charger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,438,298 B2 - Document ID: US9438298B2 - Status: Granted - Kind: B2 - Application number: 14/911,728 - Filed: 2014-12-17 - Published: 2016-07-14 - Granted: 2016-09-06 - Earliest claimed: 2013-12-17 - Assignees: Jeffery Rudes - Applicants: Eyal Abramovich - Inventors: Eyal Abramovich - Web page: https://patentgrep.com/patent/US9438298B2 ## CPC - H04B 1/3888: Arrangements for carrying or protecting transceivers - H02J 7/70: characterised by the mechanical construction - H04B 1/3883: Arrangements for mounting batteries or battery chargers - H04M 1/04: Supports for telephone transmitters or receivers - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H04B: TRANSMISSION - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract Charger apparatus for charging a rechargeable device, the charger including a casing, AC pins, a charging circuit and a DC plug, the casing having a slim shape, the AC pins receiving AC voltage from an AC voltage source, the AC pins being rotatably coupled with the casing for rotating from a stowed configuration in which the AC pins conform to the slim shape of the casing, to a charging stance in which the AC pins extend normally posteriorly from the casing, the charging circuit transforming the AC voltage to DC voltage adapted for charging the rechargeable device and providing the DC voltage to a charging port of the rechargeable device, the DC plug moving from a stowed configuration in which the DC plug conforms to the slim shape of the casing, to a charging stance in which the DC plug is exposed from the casing. ## Claims ### Claim 1 Charger apparatus for charging a rechargeable device, comprising: a casing having a slim shape; AC pins for receiving AC voltage from an AC voltage source, said AC pins being rotatably coupled with said casing, said AC pins rotating from a stowed configuration in which said AC pins conform to the slim shape of said casing to a charging stance in which said AC pins extend normally posteriorly from said casing, in said stowed stance of said AC pins said AC pins rest in a respective niche within said casing; a charging circuit for transforming said AC voltage to DC voltage adapted for charging said rechargeable device; a floating base bar having a DC plug mounted thereon, said DC plug providing said DC voltage to a charging port of said rechargeable device, said floating base bar supporting said rechargeable device during charging, said floating base bar moving from a stowed configuration in which said floating base bar and said DC plug conform to the slim shape of said casing, to a charging stance in which floating said floating base bar projecting beyond said casing such that said DC plug is exposed from said casing, and such that said floating base bar can support said rechargeable device; and two flexible rails coupled with said casing, said floating base bar being mounted on said flexible rails, said DC plug being connected to said charging circuit via wiring running through at least one of said flexible rails and through said floating base bar, said flexible rails can be twisted for aligning said base bar to the direction of the pulling force applied by a user when disconnecting said rechargeable device from said charger. ### Claim 2 (depends on 1) The charger apparatus of claim 1, further comprising: Two rotating bars rotatably coupled with opposite bottom corners of said casing, said rotating bars rotating from a stowed stance in which said rotating bars conform to the slim shape of said casing, to a charging stance in which said rotating bars are rotated around a vertical axis such that said rotating bars extend anteriorly from said casing, wherein each of said flexible rails extending from a respective one of said rotating bars. ### Claim 3 (depends on 1) The charger apparatus of claim 1, wherein said AC pins are flat pins and are rotatable about a longitudinal axis thereof, and wherein in the stowed stance said AC pins are parallel to said casing, and in the charging stance said AC pins correspond to inclined sockets of said AC voltage source. ### Claim 4 (depends on 1) The charger apparatus of claim 1, wherein said charging circuit comprises: an input port, for receiving said AC voltage from said AC pins; a diode bridge, coupled with said input port, for rectifying said AC voltage into a rectified voltage; a capacitors matrix, coupled with said diode bridge, said capacitors matrix comprising at least two parallel columns, each said column comprising at least two in-series capacitors, said capacitors matrix producing a constant DC voltage from said rectified voltage, said capacitors matrix having a voltage range value equal to that of a high voltage capacitor, each capacitor of said capacitors matrix being a low voltage capacitor and having compact dimensions with respect to said high voltage capacitor; a transformer, coupled with said capacitors matrix, for transforming said constant DC voltage into a reduced voltage; an output circuit, coupled with said transformer, for producing said DC voltage adapted for charging said rechargeable device from said reduced voltage; and an output port, coupled with said output circuit, for providing said DC voltage adapted for charging said rechargeable device to said DC plug. ### Claim 5 (depends on 1) The charger apparatus of claim 1, further comprising an internal power source for charging said rechargeable device in case there is no AC voltage source. ### Claim 6 (depends on 5) The charger apparatus of claim 5, wherein said charger excludes said AC pins and said charging circuit and can charge said rechargeable device only from said internal power source. ### Claim 7 (depends on 1) The charger apparatus of claim 1, wherein said DC plug can be replaced by another DC plug adapted to another rechargeable device. ### Claim 8 (depends on 1) The charger apparatus of claim 1, wherein said rechargeable device is selected from the list consisting of a cellular telephone; a tablet computer; a media player; a digital book reader; a Personal Digital Assistant (PDA); a digital camera; and a shaving machine. ### Claim 9 (depends on 1) The charger apparatus of claim 1, further comprising a USB port coupled to said casing via a flexible USB connector, said USB port adapted to be connected to an external power source for receiving power for charging said rechargeable device. ### Claim 10 (depends on 9) The charger apparatus of claim 9, wherein said USB port provides data connection between an external device and said rechargeable device.