1. Field of the Invention
The present invention relates to power products, and more particularly to a multiple outlet power cord.
2. Description of Related Art
Our contemporary society enjoys numerous electronic devices that help to make our lives more productive, more comfortable and more efficient. Such devices include, for example, notebook computers, personal digital assistants (PDAs), cell phones, computer printers, DVD players, DC players, MP3 players, digital cameras, camcorders, and other electronic devices. With advancements in technology allowing a decrease in size and improved efficiencies in battery life, portability of such items has improved dramatically. In fact, more users than ever can be seen traveling with one or more of the electronic devices listed above.
To enhance the portability, rechargeable batteries, although not required, are often provided. Examples of such rechargeable batteries include, among others, lithium, lithium ion, nickel cadmium (NiCad), and nickel metal hydride (NiMH). Such rechargeable batteries allow a user to operate the electronic device away from an AC power source for some period of time. However, even with a battery source to enhance the portability, an occasional or periodic hookup to an AC power source is typically made to either operate the device directly or to recharge the batteries (or both).
When traveling to certain locations, however, the accessibility to and availability of AC power outlets can be limited. As such, users traveling with multiple electronic devices may find difficulty powering or charging their electronic devices simultaneously.
In one embodiment, the present invention is directed toward a multiple outlet power cord, including: a main body having a first power connector; a power cord having first and second ends, the first end attached to the main body and electrically connected to the first power connector; a power plug attached to the second end of the power cord and configured to receive power from a power source; and a circuit breaker disposed in the main body. In one embodiment, the first power connector is shaped so as to directly interface to an AC power adaptor without the need for a cord between the first power connector and the AC power adaptor. The power cord can further include a connection adaptor, the connection adaptor having a first end configured to mate to the first power connector and a second end configured to mate to a power adaptor.
In one embodiment, a power product can include a fixed output power supply having a DC power output electrically connected to an output socket on the main body, which can be implemented for example using a USB socket. A network interface can also be provided to allow the power product to be connected to a network and to provide a network connection to the output socket.
Another embodiment of the invention is an apparatus to provide power to a power adaptor, including means for providing electrical power to a main body; means for mating a main body directly with a male AC power connector on a device; means for connecting the main body to a power source; and a circuit breaker means disposed in the main body; wherein the means for mating is shaped so as to directly interface to an AC power connector on a device without the need for a cord between the first power connector and the AC power connector on the device.
Yet another embodiment of the invention provides a multiple outlet power product that includes: a main body having a plurality of output power connectors; an input power connector electrically connected to the output power connectors; and a circuit breaker disposed in the main body; wherein at least one of the output power connectors is shaped so as to directly interface to an AC power adaptor without the need for a cord between the first power connector and the AC power adaptor. Removable connection adaptors having a first end configured to mate to the output power connector and a second end configured to mate to the AC power adaptor can also be included.
In still a further embodiment, a power product includes a main body having an output power connector configured to mate with an AC power adaptor, an input power connector electrically connected to the output power connectors, and a circuit breaker disposed in the main body. At least one of the output power connectors is shaped so as to directly interface to the AC power adaptor without the need for a cord between the first power connector and the AC power adaptor. The AC power adaptor is integrated into a device to be powered.
In yet a further embodiment, a power product, includes: a body; a power converter disposed within the body and configured to convert an input power signal into an output power signal adapted to power an electronic device; an input power connector electrically connected to the power converter configured to accept the input power signal; an output power connector electrically connected to the power converter and configured to mate with an input power connector of an electronic device; and a network interface in the housing configured to connect with a computer network and to provide a network connection to the electronic device. In one embodiment, the output power connector is shaped so as to directly interface to the AC power adaptor without the need for a cord between the output power connector and the AC power adaptor. In another embodiment, there is a power cord between the power converter and the output power connector. A power cord can also be provided between the power converter and the input power connector. The output power connector can be implemented using a USB socket configured to accept a USB plug from an electronic device, and the network connection can be provided via the USB socket.
The present invention, in accordance with one or more various embodiments, is described in detail with reference to the following figures. The drawings are provided for purposes of illustration only and merely depict typical or example embodiments of the invention. These drawings are provided to facilitate the reader's understanding of the invention and shall not be considered limiting of the breadth, scope, or applicability of the invention. It should be noted that for clarity and ease of illustration these drawings are not necessarily made to scale.
The present invention is directed to combining the functionality of a multiplicity of AC power cords for powering (i.e., powering directly or recharging or both) portable electronic devices and for allowing connection to a multiplicity of AC adapters for powering portable electronic devices including, among others, notebook and laptop computers, personal digital assistants (PDAs), cell phones, computer printers, DVD players, DC players, MP3 players, digital cameras, camcorders, and battery chargers with a compact, easily transportable unit. Additional embodiments of the present invention can include further features, among others, such as (i) power and ground status indication, (ii) fuses and circuit breakers, (iii) power and power source switching, (iv) AC power line surge suppression, (v) AC power line RF interference filtering, and (vi) DC to AC and AC to DC power conversion. This allows for a single and preferably compact unit with one AC or DC power supply line cord to simultaneously power one or more similar or different electronic devices.
Optionally included stress relief member 25 transitions from the main body 24 to a power cord 30. Illustrated in
Portable electronic devices 18 and 18′ contain male AC power input connectors 16 and 16′, respectively, which mate with female AC power supply connectors 14 and 14′, respectively and which in the illustrated embodiment extend from the main body 24. Although illustrated as integrally formed with main body 24, AC power input connectors 16 and 16′ could be implemented as modular type connectors as further described herein in one or more of the alternative embodiments.
Optionally one or more status indicators (two, 56 and 58 are shown here for purposes of illustration) may be included with main body 24, for example, to signal the presence of AC voltage, or for an additional example, in the event that 32 is a grounded plug, to signal the presence of a good ground connection. Other status indicators could also be provided.
Note that in the illustrated embodiment, up to two devices can be simultaneously connected to main body 24, for simultaneous powering from a single AC power cord 30. Main body 24 can alternately be provided with more than two outlets to mate with the same or different types of connectors on portable electronic devices or AC adapters for portable electronic devices.
In this and other embodiments, one or more USB or other like standardized sockets can be provided on main body 24 to allow connection of devices such as, for example, cell phones, PDAs and other devices. Additionally, a fixed output power supply can be included to provide the voltage and current as specified for the standardized connector. For example, a USB socket may have a 5 volt, 500 milliamp feed such that a user's blackberry, cell phone or other device can be plugged in for charging.
Additionally, wireless or wired network capabilities can be included with the housing 24 such that the USB (or other) socket can provide the ability to provide power to as well as a network connection to a peripheral device with the power adaptor acting as a network hub, gateway or other portal. Thus, for example, a printer, scanner, digital camera, PDA or other device can be powered by the adaptor as well as connected to a local or wide area network via the power adaptor. Networking technologies are known to those of skill in the art and can include technologies such as wired Ethernet, IEEE 802.11, HPNA (Home Phoneline Networking Alliance), Bluetooth, and Power-Line Networking, just to name a few.
Status indicators such as 56 and 58, for example, may optionally be included. Optional status indicator 58 is actuated when AC power is present at mains 30 and the varistors 52 and 54 have not open-circuited. Optional status indicator 56 is actuated when AC power is present at mains 30, varistors 52 and 54 have not open circuited, and the ground is present resulting in a current flow between “hot” line 32 and ground line 34. Indicator lamps may be used as status indicators, such as any of a variety of lamps compatible with AC line voltages (in the U.S. typically 110V RMS), including, but not limited to: (i) gas discharge lamps such as neon lamps; (ii) incandescent lamps with or without a series dropping resistor; and (iii) light emitting diode lamps with a series dropping resistor. Alternately, status indication may be provided through different means such as LCDs or electromechanical visual or audio annunciators as is well known in the art.
Although varistors 52 and 54 provide attenuation to low speed voltage transients on the AC mains line 30, series inductors 60 and 62, in combination with capacitors 66, 67, and 68 function as low pass filters that can be included to additionally provide attenuation to high speed voltage or current transients and radio frequency interference that may be present on the AC mains 31. Such high speed voltage transients and RF interference could potentially adversely impact the operation of the attached equipment. Alternate low pass filter circuit topologies and devices may also be implemented.
Main body 70 can allow for the simultaneous provision of AC power to multiple devices with different types of connectors (in this illustration female outlets 72a and 72b for standard AC wall plugs, and female intermediate connectors 74a, 74b, 74c, and 74d in conjunction with pin adapters such as 92, as discussed above, for specific portable equipment), using either a mains AC power supply (male connector 82 mating with female AC line cord connector 84), an airline DC power source (dc female connector 86 mating with female connector 80, and connected through a cable to airline DC connector 88), or an automotive electrical system power source (automotive pin adapter 90 connected to airline DC connector 88) as a power source. Switch 76 provides main power on and off control, as well as circuit breaker resetting. Switch 78 switches the input power source from AC to DC.
In this and other embodiments, one or more USB or other like standardized sockets can be provided on main body 70 to allow connection of other devices including cell phones, PDAs and other devices as examples. Additionally, a fixed output power supply can be provided (as a tap off from the main power converter or as a dedicated power supply) to provide the voltage and current as specified for the standardized connector. For example, a USB socket may have a 5 volt, 500 milliamp feed such that a user's blackberry, cell phone or other device can be plugged in for charging.
Additionally, wireless or wired network capabilities can be included with the power adaptor such that the USB (or other) socket can provide the ability to provide power to as well as a network connection to a peripheral device with the power adaptor acting as a network hub, gateway or other portal. Thus, for example, a printer, scanner, digital camera, PDA or other device can be powered by the adaptor as well as connected to a local or wide area network via the power adaptor. Networking technologies are known to those of skill in the art and can include technologies such as wired Ethernet, IEEE 802.11, HPNA (Home Phoneline Networking Alliance), Bluetooth, and Power-Line Networking, just to name a few.
In
Several embodiments of the present invention have been described above. In some cases the specific features were arbitrarily selected for purposes of illustration in a given embodiment. However, it is understood that these various embodiments and examples are exemplary only and should not serve to limit the scope of the invention. It is also readily understood by those of ordinary skill in the art how to design and implement the disclosed embodiments using alternative architectures, processes, functionality, structures, and implementations. Additionally, the inclusion of features from any one or more of the above embodiments in any one or more of the other above embodiments, or the elimination of some features from an embodiment, will be readily apparent to one of ordinary skill in the art after reading this description. In sum, after reading this description, various modifications of and alternatives to the preferred embodiments described above can be implemented by those of ordinary skill in the art, without undue experimentation. These various modifications and alternatives are contemplated to be within the spirit and scope of the invention. For example without limiting the generality of the foregoing, the circuit schematics of
Terms and phrases used in this document, and variations thereof, unless otherwise expressly stated, should be construed as open ended as opposed to limiting. As examples of the foregoing: the term “including” should be read as mean “including, without limitation” or the like; the term “example” is used to provide exemplary instances of the item in discussion, not an exhaustive or limiting list thereof; and adjectives like “conventional,” “traditional,” “normal,” “standard,” and terms of similar meaning should not be construed as limiting the item described to a given time period or to an item available as of a given time, but instead should be read to encompass conventional, traditional, normal, or standard technologies that may be available now or at any time in the future. Likewise, a group of items linked with the conjunction “and” should not be read as requiring that each and every one of those items be present in the grouping, but rather should be read as “and/or” unless expressly stated otherwise.
This application claims priority to U.S. Patent Provisional Application Ser. No. 60/642,859, filed on Jan. 10, 2005, the disclosures of which are herein incorporated by reference in their entirety.
Number | Date | Country | |
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60642859 | Jan 2005 | US |