Battery charging apparatus
This patent describes in combination: a portable module having a light mounted thereon, at least one rechargeable battery therein for operating the light, and a pair of contacts connected to the battery; an electrical system of an automotive vehicle having a second battery and an operation switch connected to the second battery, the switch having a normally open position; an apparatus for charging the rechargeable battery from the second battery. The apparatus has a charging circuit with a diode between the second battery and one of the contacts for the rechargeable battery, means for short circuiting the diode to permit a current flow around the diode, the means including a second switch having a normally closed position to complete a short circuit about the diode and an open position to interrupt the short circuit, and actuating means for actuating the second switch connected with the operation switch to move the second switch to the open position in response to closing of the operation switch.
- Assignee:
- NOV; EDB-87-169511; NOV-87-079446
- Patent Number(s):
- US 4691157
- OSTI ID:
- 5932620
- Country of Publication:
- United States
- Language:
- English
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