Polarity indicator for battery charger
First Claim
1. In a battery charger having positive and negative output terminals, with positive and negative battery charger cables and clips connected thereto, for connection of the charger to the positive and negative terminals of the battery to be charged, a polarity indicator for indicating to the operator of the battery charger the correct terminals of the battery to be charged, said polarity indicator comprising:
- (a) test probe means mounted in conjunction with the second charger clip such that said test probe is electrically insulated from said second charger clip; and
(b) light emitting diode means connected between a first charger clip and the test probe means, so that upon connection of the first charger clip to a first battery terminal and contact of the test probe means with the other battery terminal, the polarity of the terminals is indicated by whether or not said light emitting diode lights up.
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Accused Products
Abstract
A polarity indicating system using a light emitting diode is mounted on the clip for a battery charger to provide an indication that the battery charger is properly connected to the battery being charged. In the preferred embodiment, the LED is connected to a test probe mounted in one of the handles of the negative clip and connected in series between the test probe and the positive cable. An alternate embodiment uses the polarity indicating system on battery booster cables.
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Citations
8 Claims
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1. In a battery charger having positive and negative output terminals, with positive and negative battery charger cables and clips connected thereto, for connection of the charger to the positive and negative terminals of the battery to be charged, a polarity indicator for indicating to the operator of the battery charger the correct terminals of the battery to be charged, said polarity indicator comprising:
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(a) test probe means mounted in conjunction with the second charger clip such that said test probe is electrically insulated from said second charger clip; and (b) light emitting diode means connected between a first charger clip and the test probe means, so that upon connection of the first charger clip to a first battery terminal and contact of the test probe means with the other battery terminal, the polarity of the terminals is indicated by whether or not said light emitting diode lights up. - View Dependent Claims (2, 3, 4)
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5. In a battery booster cable pair having positive and negative booster cable sets with positive and negative clips attached to each end of the conductors for the positive and negative cables, respectively, a polarity indicator for determining the polarity of the terminals of the batteries to be connected, said polarity indicator comprising:
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(a) test probe means mounted in conjunction with the second charger clip such that said test probe is electrically insulated from said second charger clip; and (b) light emitting diode means connected between the test probe and a first booster conductor, so that upon connection of a first clip of said first conductor to a selected first terminal of a battery and contact of the test probe to the other terminal of the battery, an indication of the polarity between the two battery terminals is provided by whether or not said light emitting diode lights up. - View Dependent Claims (6, 7, 8)
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Specification