Shock-proof electrical outlet
First Claim
Patent Images
1. An electrical safety device, for connection between a high voltage electrical power source and a load, comprising:
- an outlet comprising a positive voltage terminal and a negative voltage terminal;
means for receiving a high voltage input from a high voltage electrical source;
means for providing low voltage to the outlet from the source high voltage input, the low voltage being less than the source high voltage input;
means for monitoring current flow across the outlet positive voltage terminal and the negative voltage terminal and providing an electrical output when such flow occurs, the current flow indicative of whether a load is connected to the outlet;
a first means for switching from a first state to a second state when current flows across the outlet positive and negative terminals and providing an electrical output in the second state; and
a second means for switching comprising a plurality of sets of contacts, the second switching means configured to change the plurality of contacts from a first state to a second state upon receiving an electrical input from the first switching means, and configured to provide a connection from the high voltage source to the outlet in the second state.
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Abstract
The present invention relates to a shock-proof electrical output device, which comprises a power outlet having a positive and a negative terminal, a voltage converter with a high voltage input and a low voltage output, a current monitoring relay device, a latching relay device, and a changeover relay device.
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Citations
23 Claims
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1. An electrical safety device, for connection between a high voltage electrical power source and a load, comprising:
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an outlet comprising a positive voltage terminal and a negative voltage terminal; means for receiving a high voltage input from a high voltage electrical source; means for providing low voltage to the outlet from the source high voltage input, the low voltage being less than the source high voltage input; means for monitoring current flow across the outlet positive voltage terminal and the negative voltage terminal and providing an electrical output when such flow occurs, the current flow indicative of whether a load is connected to the outlet; a first means for switching from a first state to a second state when current flows across the outlet positive and negative terminals and providing an electrical output in the second state; and a second means for switching comprising a plurality of sets of contacts, the second switching means configured to change the plurality of contacts from a first state to a second state upon receiving an electrical input from the first switching means, and configured to provide a connection from the high voltage source to the outlet in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electrical output device comprising:
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an outlet having a positive terminal and a negative terminal; a voltage converter comprising a high voltage input having a positive a terminal and negative terminal, and a low voltage output having a positive and negative terminal; a current monitoring relay configured to monitor current flowing across the negative and positive terminals of the outlet indicating a device with a load is connected across the outlet, and configured to provide an electrical output when current flows across the outlet; a latching relay comprising a trigger button, a reset button, a first contact, a second contact, and a common contact, wherein the common contact is in communication with the voltage converter low voltage output positive terminal; and a changeover relay comprising a switch, a first set of switch contacts, a second set of switch contacts, and a third set of switch contacts, each set having a first contact, a second contact, and a common contact, wherein the first contact of the first set of switch contacts is in communication with the latching relay trigger button, the second contact of the first set of switch contacts is in communication with the positive terminal of a high voltage power line, and the common contact of the first set of switch contacts is in communication with the negative terminal of the outlet; wherein the second contact of the second set of switch contacts in communication with the output of the current monitoring relay device and the common contact is in communication with the reset button of the latching relay device; wherein the first contact of the third set of the changeover relay is in communication with the negative terminal of the high voltage power line and the common contact is in communication with the positive terminal of the low voltage output; and wherein the switch of the changeover relay device is in communication with the second contact of the latching relay device. - View Dependent Claims (19)
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20. An electrical safety device, for connection between a high voltage electrical power source and a load, comprising:
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high voltage input terminals for receiving high voltage from a source, the high voltage input terminals comprising a positive terminal and a negative terminal; output terminals for connecting to a load, the output terminals comprising a positive terminal and a negative terminal; a voltage converter comprising a high voltage input side connected to the positive and negative high voltage input terminals, and a low voltage output side having a positive terminal and a negative terminal; a current monitor device configured to monitor current flowing across the negative and positive output terminals and provide an electrical output if high voltage current is flowing across the output terminals, the current flow indicating a load is connected to the negative and positive output terminals; a latching relay configured to switch from a first state to a second state when current flows across the positive and negative voltage output terminals, and provide an electrical output in the second state, and configured to receive the current monitoring device electrical output and reset from the second state to the first state based on the current monitoring electrical output; and a changeover relay comprising a plurality of sets of contacts, the changeover relay configured to change the plurality of contacts from a first state to a second state upon receiving an electrical input from the latching relay, configured to provide a connection from the low voltage output side of the voltage converter to the output terminals in the first state, and configured to provide a connection from the high voltage source to the output terminals in the second state. - View Dependent Claims (21, 22, 23)
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Specification