Energy saving cable assemblies
DCFirst Claim
1. A cable assembly for use with an electrical device, the cable assembly comprising:
- a first portion for receipt of input power from a power source;
a second portion for electrical coupling with and for providing output power to the electrical device; and
switch circuitry electrically coupled between the first and second portions, the switch circuitry momentarily utilizing a current to power the switch circuitry in order to switch the cable assembly to an on state and to electrically couple the first portion with the second portion, wherein the output power is delivered to the electrical device when the cable assembly is in the on state, wherein the switch circuitry is operable to automatically disconnect input power from the electrical device.
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Litigations
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Reexamination
Accused Products
Abstract
A cable assembly for use with any power cable for an electrical device, the cable assembly including a remotely locatable switch for connecting or disconnecting the electrical device from power draw. Also, a cable assembly for a power device such as a charger for providing output power to an electronic device is disclosed, the cable assembly including two pairs of wires wherein a first pair provides output power for the electronic device and a second pair includes a switch for turning off the charger. The cable assembly allows the switch to be located remotely from a charger housing for the converter circuitry and remotely from a power source such as an outlet, and allows the switch to be generally co-located with and operable at the connector for connecting the power device with the electronic device.
123 Citations
52 Claims
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1. A cable assembly for use with an electrical device, the cable assembly comprising:
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a first portion for receipt of input power from a power source; a second portion for electrical coupling with and for providing output power to the electrical device; and switch circuitry electrically coupled between the first and second portions, the switch circuitry momentarily utilizing a current to power the switch circuitry in order to switch the cable assembly to an on state and to electrically couple the first portion with the second portion, wherein the output power is delivered to the electrical device when the cable assembly is in the on state, wherein the switch circuitry is operable to automatically disconnect input power from the electrical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A cable assembly for use with an electrical device having an on-board battery, the electrical device including a charger having a power plug for receiving power and a connector for removable connection with the electrical device for delivering power to the battery, and the electrical device including a connector port for electrical connection with further devices, the cable assembly comprising:
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a plug body including prongs for electrical connection with a power outlet to receive input power therefrom; a socket for receipt of and electrical connection with the charger power plug for delivering output power thereto, the charger converting said output power and delivering power to the laptop computer battery; a cord having a first end extending from the plug body; a plug connected at a second end of the cord, the plug being receivable in the electrical device connector port for receiving an electrical signal therefrom; a switch circuitry electrically connected with the plug, the switch circuitry automatically moving to an open position when the electrical signal from the connector port is not received by the plug, the open position cutting input power from the power outlet and cutting output power to the charger power plug. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. In combination with an electrical device, a cable assembly for connecting and disconnecting electrical power to the electrical device, the system comprising:
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an input portion for connection with a power source for receiving input electrical power; a converter portion including converter circuitry for converting electrical power; and switch circuitry for controlling an on and an off state for the system, wherein the switch circuitry automatically disconnects the input electrical power to switch the system to the off state in response to a reduced power state of the electrical device, wherein the cable assembly consumes substantially no power while in the off state. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. In combination with an electrical device, a cable assembly for connecting and disconnecting electrical power to the electrical device, the system comprising:
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an input portion for connection with power source for receiving input electrical power; a converter portion including converter circuitry for converting electrical power; and switch circuitry for controlling an on and an off state for the system, wherein the switch circuitry automatically connects the input electrical power to switch the system to the on state, wherein the cable assembly consumes substantially no power while in the off state. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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43. In combination with an electrical device, a cable assembly for connecting and disconnecting electrical power to the electrical device, the system comprising:
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an input portion for connection with a power source for receiving input electrical power; a converter portion including a transformer and converter circuitry for converting the input electrical power to output electrical power; sensing circuitry for measuring current drawn from the cable assembly by the electrical device; and switch circuitry for switching the cable assembly between a fully-powered state and a reduced power state, wherein the switch circuitry automatically switches the cable assembly to the reduced power state in response to a reduced current draw by the electrical device and without regard to an output voltage of the cable assembly, the switch circuitry disconnecting power from the transformer when in the reduced power state. - View Dependent Claims (44, 45, 46, 47)
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48. In combination with an electrical device, a cable assembly for connecting and disconnecting electrical power to the electrical device, the system comprising:
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an input portion for connection with a power source for receiving input electrical power; a converter portion including a transformer and converter circuitry for converting the input electrical power to output electrical power; switch circuitry for controlling an on and an off state for the system, the switch circuitry including a latching relay coupled to electrically connect or disconnect power to or from the transformer. - View Dependent Claims (49, 50, 51, 52)
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Specification