Power supply unit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9391474
SERIAL NO

13928058

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A power supply unit for supplying power to a device has a rechargeable, main battery; a charging arrangement for charging the main battery; a non-rechargeable back-up battery; load terminals for connection to a load; and a control unit for controlling supply of power to the load primarily from the main battery and secondarily from the back-up battery. The device is, in particular, a single bay, stand alone parking meter. In the event that the main battery runs low, the control unit is configured to supply power to the load from both the main battery and the back-up battery or only from the back-up battery. The back-up battery is easily replaceable, and the power supply unit has a bay, with connectors for receiving the back-up battery. The main battery is charged from solar panels. A communication device is provided to communicate status messages wirelessly to a control system.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
IPS GROUP INC.SAN DIEGO, CA61

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hunter, Stephen John Randpark, ZA 20 472
Joubert, Andre Malan Edenvale, ZA 5 169

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