WO2009057048A1 - Portable power supply system - Google Patents

Portable power supply system Download PDF

Info

Publication number
WO2009057048A1
WO2009057048A1 PCT/IB2008/054454 IB2008054454W WO2009057048A1 WO 2009057048 A1 WO2009057048 A1 WO 2009057048A1 IB 2008054454 W IB2008054454 W IB 2008054454W WO 2009057048 A1 WO2009057048 A1 WO 2009057048A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
base
supply system
power supply
power
Prior art date
Application number
PCT/IB2008/054454
Other languages
French (fr)
Inventor
Roelof Mulder
Richard Perez
Byron Qually
Original Assignee
Roelof Mulder
Richard Perez
Byron Qually
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roelof Mulder, Richard Perez, Byron Qually filed Critical Roelof Mulder
Publication of WO2009057048A1 publication Critical patent/WO2009057048A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This invention relates to portable power supply systems.
  • laptop computers and cellular telephones now play a significant part in the organisation and control of a film shoot. These require power supplies either to run them or to recharge their batteries.
  • the present invention provides a portable power supply system which provides power at voltages and currents suitable for running and charging electronic equipment.
  • a portable power supply system comprising a base casing and a top casing, the base casing containing a rechargeable battery and comprising circuitry for supplying power for charging said battery, a connector for enabling said circuitry to be connected to a source of power, and power output connector means on the top surface of said base casing, said battery being connected to said connector means to supply power thereto, the top casing comprising a plug socket into which the power cable of a piece of electronic equipment can be plugged, electrical connection means on the underside of said top casing and located so as to mate with the power output connector means of the base casing when the top casing is placed on the base casing, and circuitry within the top casing for providing a.c. power at mains voltage for charging portable electronic equipment, said circuitry of the top casing being connected between said connection means of the top casing and said socket.
  • said power output connector means and the connection means are at the centre of a top panel of the base casing and at the centre of a base panel of the top casing.
  • Interlocking studs and apertures can be provided for locating the top and base casings with respect to one another.
  • the studs and apertures can be such that they can be interlocked by turning the top casing with respect to the base casing.
  • carrying handles can be provided, preferably protruding upwardly from the top surface of the top panel of the top casing.
  • the base casing may comprise lights which illuminate when the battery is fully charged, and there may be optic fibres through which light is transmitted from said lights to a light cluster of the top casing so that the state of change of the batteries is displayed on the top panel.
  • Circuitry of the top casing may include an inverter, and circuitry of the base casing may include a rectifier
  • Figure 1 is a pictorial view of a portable power supply system in accordance with the present invention and comprising a base casing and a top casing;
  • Figure 2 is a pictorial view of a portable power supply system in an inverted position
  • Figure 3 is a pictorial view from above of the base casing
  • Figure 4 is an underneath pictorial view of the inverted top casing.
  • Figures 5 and 6 are "exploded" pictorial views showing the components of the top and base casings of the power supply system.
  • the power supply system 10 shown in Figures 1 to 4 comprises a base casing 12 and a top casing 14.
  • the base casing 12 has four supporting feet 16.
  • the top panel 18 of the base casing 12 comprises a power plug 20 positioned in a recess 22.
  • a cable (not shown) is attached to the plug 20 and is also stored in the recess 22.
  • a further plug (not shown) which is compatible with the socket designated 24.
  • a carrying strap 26 has its ends located in cavities 28 in the top panel 18.
  • One end of the strap, the left hand in Figure 3, is permanently fixed in its cavity and the other end of the strap 26 carries a metal tab 30 which can be releasably hooked onto a protrusion (not shown) within the cavity 28.
  • Four studs 32 protrude upwardly from the panel 18 and are positioned to be received in openings (described hereinafter) of the top casing 14 to locate the casings with respect to one another.
  • the top panel 18 comprises a sheet plastic decal 38 (see Figure 6) with holes punched in it and an underlying metal plate 40.
  • the plate 40 has four holes 42 in it arranged in an array about the component 34.
  • the top casing 14 (see Figure 1 ) comprises a top panel 44 which consists of a sheet plastics decal 46 and a metal plate 48 (see Figure 5). Plug pin holes are shown at 50 into which the power leads of portable electronic equipment such as laptop computers and cellular telephones can be inserted.
  • the socket structure below the holes 50 is designated 52 in Figure 5.
  • "On-off" switches 54 form part of the socket structure 52.
  • a light cluster is shown at 56 and two carrying handles 58 protrude upwardly from the top panel 44.
  • a plug socket 60 of the same kind as the plug socket 24 is provided in the panel 44, together with a power button 62, a reset button 64 and a cigarette lighter 66.
  • the top casing 14 further includes a base panel 68 ( Figure 4) which has, at the centre thereof, the other component 70 of the " Strix" connector.
  • each opening 72 is of keyhole shape. This enables the casings 12, 14 to be presented to one another in a slightly misaligned position and then, once the studs are in the openings, turned with respect to one another to lock the casings together.
  • FIG 5 shows the components of the top casing 14. Only those components not described above will be referred to in the following description.
  • the power button 62 is mounted on a p.c. board 82.
  • the light cluster 56 is constituted by the ends of optic fibres 84 which have their other ends secured to a carrier 86 and aligned with the openings 76.
  • An inverter is shown at 88 and a chassis plate at 90.
  • a fan 80 is mounted on the chassis plate 90 and is covered by a grid 92 and a filter 94 with a gasket 96 between them.
  • the main component of the casing 14 is in the form of a wall structure 98.
  • a gasket 100 fits into a recess of the structure 98 and below the metal plate 40.
  • the base plate 68 comprises a sheet plastics decal 102 and a metal plate 104 with upturned perforated flanges 106 which enter the lower end of the structure 98. Adhesive penetrates into the perforations and secures the flanges 106 to the wall structure 98.
  • the metal plate 48 ( Figure 6) has downturned flanges 108 which enter and are adhered to a wall structure 110.
  • a base plate is shown at 112, this fitting into the structure 110.
  • Two cradles 114 rest on the base plate 112 and two load spreading plates 116 are located on the cruciform base of each cradle.
  • Two motor vehicle batteries are shown at 118.
  • Gaskets 120 which are between the plate 48 and the batteries hold the batteries in place.
  • a rectifier is shown at 122 and a printed circuit board with four lights on it at 124. The lights are in register with the holes 42.
  • An upwardly open casing 126 bounds the recess 22.
  • the casings 12, 14 are separated and the power plug 20 and its cable are removed from the recess 22.
  • the power cable is plugged into the socket 24 and the plug 20 into a wall socket or other power source.
  • the lights on the board 124 illuminate.
  • the plug and cable are returned to the recess 22 and the strap 26, if it has been used, is returned to its recess 28.
  • the casing 14 is then placed on the casing 12, the studs 32 and openings 72 being interlocked.
  • the balls 74 enter the recesses 36.
  • Power at battery voltage is transmitted through the connectors 34, 70 to the inverter 88 where it is converted to a.c. power at mains voltage. This is made available at the sockets of the socket structure 52. Hence equipment which has a power lead with its own rectifier/transformer built in can be plugged in.
  • Light is transmitted through the optic fibres 84 to the light cluster 56 so that the state of charge of the batteries is displayed on the top panel 44.
  • the casing 14 can include a power source which provides temporary power at the sockets of the structure 52 whilst the casings 12, 14 are separated to enable the casing 14 to be mated with a casing 12 that has charged batteries.
  • a suitable temporary power source is a capacitor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Sources (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention is for a portable power supply system (10) that provides power at voltages and currents suitable for running and charging electronic equipment. The portable power supply system (10) comprises a base casing (12) and a top casing (14) which fits on the base casing (12). A rechargeable battery (118) is contained in the base casing (12) and circuitry is provided for supplying power for charging the battery (118). The circuitry includes a power output connector means (34) on the top surface of the base casing (12) that is connected to the battery (118), and an electrical connection means (70) on the underside of the top casing (14) that is located so as to mate with the power output connector means (34) of the base casing (12) when the top casing (14) is placed on the base casing (12). The top casing (14) has plug pin holes (50) into which power leads of portable electronic equipment such as laptop computers and cellular telephones can be inserted.

Description

PORTABLE POWER SUPPLY SYSTEM
FIELD OF THE INVENTION
This invention relates to portable power supply systems.
BACKGROUND TO THE INVENTION
There are many instances where power is required at sites where there is no possibility of connecting to a mains supply. When filming on location, for example, power is provided by generators for flood lights and other apparatus which draw high currents.
Inevitably, laptop computers and cellular telephones (also called "mobiles") now play a significant part in the organisation and control of a film shoot. These require power supplies either to run them or to recharge their batteries.
The present invention provides a portable power supply system which provides power at voltages and currents suitable for running and charging electronic equipment.
BRIEF DESCRIPTION OF THE INVENTION
According to the present invention there is provided a portable power supply system comprising a base casing and a top casing, the base casing containing a rechargeable battery and comprising circuitry for supplying power for charging said battery, a connector for enabling said circuitry to be connected to a source of power, and power output connector means on the top surface of said base casing, said battery being connected to said connector means to supply power thereto, the top casing comprising a plug socket into which the power cable of a piece of electronic equipment can be plugged, electrical connection means on the underside of said top casing and located so as to mate with the power output connector means of the base casing when the top casing is placed on the base casing, and circuitry within the top casing for providing a.c. power at mains voltage for charging portable electronic equipment, said circuitry of the top casing being connected between said connection means of the top casing and said socket.
In the preferred form said power output connector means and the connection means are at the centre of a top panel of the base casing and at the centre of a base panel of the top casing.
Interlocking studs and apertures can be provided for locating the top and base casings with respect to one another. In one form there is a stud at each corner of the top panel of the base casing and an aperture at each corner of the base panel of the top casing. The studs and apertures can be such that they can be interlocked by turning the top casing with respect to the base casing.
To enable the system to be readily moved about, carrying handles can be provided, preferably protruding upwardly from the top surface of the top panel of the top casing. The base casing may comprise lights which illuminate when the battery is fully charged, and there may be optic fibres through which light is transmitted from said lights to a light cluster of the top casing so that the state of change of the batteries is displayed on the top panel.
Circuitry of the top casing may include an inverter, and circuitry of the base casing may include a rectifier
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings in which:-
Figure 1 is a pictorial view of a portable power supply system in accordance with the present invention and comprising a base casing and a top casing;
Figure 2 is a pictorial view of a portable power supply system in an inverted position;
Figure 3 is a pictorial view from above of the base casing;
Figure 4 is an underneath pictorial view of the inverted top casing; and
Figures 5 and 6 are "exploded" pictorial views showing the components of the top and base casings of the power supply system.
DETAILED DESCRIPTION OF THE DRAWINGS
The power supply system 10 shown in Figures 1 to 4 comprises a base casing 12 and a top casing 14. The base casing 12 has four supporting feet 16.
Referring specifically to Figure 3, the top panel 18 of the base casing 12 comprises a power plug 20 positioned in a recess 22. A cable (not shown) is attached to the plug 20 and is also stored in the recess 22. At the end of the cable remote from the plug 20 there is a further plug (not shown) which is compatible with the socket designated 24.
A carrying strap 26 has its ends located in cavities 28 in the top panel 18. One end of the strap, the left hand in Figure 3, is permanently fixed in its cavity and the other end of the strap 26 carries a metal tab 30 which can be releasably hooked onto a protrusion (not shown) within the cavity 28. Four studs 32 protrude upwardly from the panel 18 and are positioned to be received in openings (described hereinafter) of the top casing 14 to locate the casings with respect to one another.
At the centre of the panel 18 there is one of the components 34 of an electrical connector of the "Strix" type.
Four circular recesses are shown at 36.
The top panel 18 comprises a sheet plastic decal 38 (see Figure 6) with holes punched in it and an underlying metal plate 40. The plate 40 has four holes 42 in it arranged in an array about the component 34. Four lights, which will be described hereinafter, lie immediately below the holes 42. The top casing 14 (see Figure 1 ) comprises a top panel 44 which consists of a sheet plastics decal 46 and a metal plate 48 (see Figure 5). Plug pin holes are shown at 50 into which the power leads of portable electronic equipment such as laptop computers and cellular telephones can be inserted. The socket structure below the holes 50 is designated 52 in Figure 5. "On-off" switches 54 form part of the socket structure 52.
A light cluster is shown at 56 and two carrying handles 58 protrude upwardly from the top panel 44.
A plug socket 60 of the same kind as the plug socket 24 is provided in the panel 44, together with a power button 62, a reset button 64 and a cigarette lighter 66.
The top casing 14 further includes a base panel 68 (Figure 4) which has, at the centre thereof, the other component 70 of the " Strix" connector. When the casings 12 and 14 are placed one on the other, the circuits (to be described) of the two casings are placed in electrical contact with one another through the connector components 34, 70.
Four openings 72 are provided at the corners of the panel 68 for receiving the studs 32 of the top panel of the base casing. It will be noted that each opening 72 is of keyhole shape. This enables the casings 12, 14 to be presented to one another in a slightly misaligned position and then, once the studs are in the openings, turned with respect to one another to lock the casings together.
Four spring loaded balls 74 are provided, these protruding through the base panel 68. When the casings are properly aligned, the balls 74 snap fit into the recesses 36.
Four circular openings 76 are provided in an array around the component 70. These openings are aligned with the holes 42 in the panel 18.
Turning now to Figure 5, this shows the components of the top casing 14. Only those components not described above will be referred to in the following description.
The power button 62 is mounted on a p.c. board 82. The light cluster 56 is constituted by the ends of optic fibres 84 which have their other ends secured to a carrier 86 and aligned with the openings 76. An inverter is shown at 88 and a chassis plate at 90. A fan 80 is mounted on the chassis plate 90 and is covered by a grid 92 and a filter 94 with a gasket 96 between them.
The main component of the casing 14 is in the form of a wall structure 98. A gasket 100 fits into a recess of the structure 98 and below the metal plate 40.
The base plate 68 comprises a sheet plastics decal 102 and a metal plate 104 with upturned perforated flanges 106 which enter the lower end of the structure 98. Adhesive penetrates into the perforations and secures the flanges 106 to the wall structure 98.
The metal plate 48 (Figure 6) has downturned flanges 108 which enter and are adhered to a wall structure 110.
A base plate is shown at 112, this fitting into the structure 110. Two cradles 114 rest on the base plate 112 and two load spreading plates 116 are located on the cruciform base of each cradle. Two motor vehicle batteries are shown at 118.
Gaskets 120 which are between the plate 48 and the batteries hold the batteries in place.
A rectifier is shown at 122 and a printed circuit board with four lights on it at 124. The lights are in register with the holes 42.
An upwardly open casing 126 bounds the recess 22.
To charge the batteries 118, the casings 12, 14 are separated and the power plug 20 and its cable are removed from the recess 22. The power cable is plugged into the socket 24 and the plug 20 into a wall socket or other power source. When the batteries are fully charged the lights on the board 124 illuminate. The plug and cable are returned to the recess 22 and the strap 26, if it has been used, is returned to its recess 28.
The casing 14 is then placed on the casing 12, the studs 32 and openings 72 being interlocked. The balls 74 enter the recesses 36.
Power at battery voltage is transmitted through the connectors 34, 70 to the inverter 88 where it is converted to a.c. power at mains voltage. This is made available at the sockets of the socket structure 52. Hence equipment which has a power lead with its own rectifier/transformer built in can be plugged in.
By inserting the plug 20 and its power lead into the socket 60 of the casing, and into a source of power when available, power can be supplied to the sockets of the structure 52 at mains voltage.
Light is transmitted through the optic fibres 84 to the light cluster 56 so that the state of charge of the batteries is displayed on the top panel 44.
The casing 14 can include a power source which provides temporary power at the sockets of the structure 52 whilst the casings 12, 14 are separated to enable the casing 14 to be mated with a casing 12 that has charged batteries. A suitable temporary power source is a capacitor.

Claims

CLAIMS:
1. A portable power supply system (10) comprising a base casing (12) and a top casing (14), characterized in that the base casing (12) contains a rechargeable battery (118) and comprises circuitry for supplying power for charging said battery (118), a connector (24) for enabling said circuitry to be connected to a source of power, and power output connector means (34) on the top surface of said base casing (12), said battery (118) being connected to said connector means (34) to supply power thereto, and the top casing (14) comprising a plug socket (60) into which the power cable of a piece of electronic equipment can be plugged, electrical connection means (70) on the underside of said top casing (14) and located so as to mate with the power output connector means (34) of the base casing (12) when the top casing (14) is placed on the base casing (12), and circuitry within the top casing (14) for providing a.c. power at mains voltage for charging portable electronic equipment, said circuitry of the top casing (14) being connected between said connection means (70) of the top casing (14) and said socket (60).
2. The power supply system (10) as claimed in claim 1 , wherein said power output connector means (34) and the connection means (70) are at the centre of a top panel (18) of the base casing (12) and at the centre of a base panel (68) of the top casing (14).
3. The power supply system (10) as claimed in claim 1 or claim 2, wherein interlocking studs (32) and apertures (72) are provided for locating the top (14) and base (12) casings with respect to one another.
4. The power supply system (10) as claimed in claim 3, wherein there is a stud (32) at each corner of the top panel (18) of the base casing (12) and an aperture (72) at each corner of the base panel (68) of the top casing (14).
5. The power supply system (10) as claimed in claim 3 or claim 4, wherein the studs (32) and the apertures (72) are interlocked by turning the top casing (14) with respect to the base casing (12).
6. The power supply system (10) as claimed in any one of claims 1 to 5, which includes carrying handles (58).
7. The power supply system (10) as claimed in claim 6, wherein the carrying handles (58) protrude upwardly from the top surface of the top panel (44) of the top casing (14).
8. The power supply system (10) as claimed in any of the preceding claims, wherein the base casing (12) further comprises lights which illuminate when the battery (118) is fully charged, there being optic fibres (84) through which light is transmitted from said lights to a light cluster (56) of the top casing (14) so that the state of charge of the batteries is displayed on the top casing (14).
9. The power supply system (10) as claimed in any preceding claim, wherein said circuitry of the top casing (14) includes an inverter (88).
10. The power supply system (10) as claimed in any preceding claim, wherein circuitry of the base casing (12) includes a rectifier (122).
PCT/IB2008/054454 2007-10-31 2008-10-29 Portable power supply system WO2009057048A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2007/09361 2007-10-31
ZA200709361 2007-10-31

Publications (1)

Publication Number Publication Date
WO2009057048A1 true WO2009057048A1 (en) 2009-05-07

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ID=40434890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/054454 WO2009057048A1 (en) 2007-10-31 2008-10-29 Portable power supply system

Country Status (1)

Country Link
WO (1) WO2009057048A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014003687A3 (en) * 2012-06-25 2014-04-17 Singapore Technologies Dynamics Pte Ltd Portable charger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1301082A (en) * 1968-11-14 1972-12-29 Richmond Electronics Markyate Specific gravity and refractive index measurements
US4300087A (en) * 1978-08-12 1981-11-10 Diehl Gmbh & Co. Portable, rechargeable power supply
DE19614435A1 (en) * 1996-04-12 1997-10-16 Ee Signals Gmbh & Co Kg Power supply
WO2003073581A1 (en) * 2002-02-27 2003-09-04 William Tan A power supply
US20060049695A1 (en) * 2004-09-03 2006-03-09 Advanced Connectek Inc. Portable power supply with computer ports
US20060208695A1 (en) * 2005-03-21 2006-09-21 Eveready Battery Company, Inc. Direct current power supply

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1301082A (en) * 1968-11-14 1972-12-29 Richmond Electronics Markyate Specific gravity and refractive index measurements
US4300087A (en) * 1978-08-12 1981-11-10 Diehl Gmbh & Co. Portable, rechargeable power supply
DE19614435A1 (en) * 1996-04-12 1997-10-16 Ee Signals Gmbh & Co Kg Power supply
WO2003073581A1 (en) * 2002-02-27 2003-09-04 William Tan A power supply
US20060049695A1 (en) * 2004-09-03 2006-03-09 Advanced Connectek Inc. Portable power supply with computer ports
US20060208695A1 (en) * 2005-03-21 2006-09-21 Eveready Battery Company, Inc. Direct current power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014003687A3 (en) * 2012-06-25 2014-04-17 Singapore Technologies Dynamics Pte Ltd Portable charger

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