BATTERY CHARGING APPARATUS FOR A PORTABLE HANDHELD DEVICE
Publication Date: 2011-Oct-11
The IP.com Prior Art Database
 The present disclosure is directed at a charging apparatus and more specifically at a battery charging apparatus for a portable handheld device.
 The use of portable electronic devices continues to increase and new functionality and accessories are continually being developed for these portable devices. Many of these portable devices include a rechargeable power pack, such as a rechargeable battery, so that once the power has been drained, the battery may be recharged so that the portable device may be operational again.
 Current charging apparatuses or adapters typically have one end plugged into a wall socket and then the other end is inserted or mated with the portable device through a charging port. The power is directly transferred between the wall socket and the device with the charging apparatus acting as a facilitator for this transmission.
 For various reasons, safety measures are incorporated within these charging apparatus in order to reduce the risks that may be associated with the apparatus. For example, shorting of terminals (such as pins) may result in undesirable heating or arcing.
BRIEF DESCRIPTION OF THE DRAWINGS
 Figure 1 is a schematic diagram of a charging apparatus for a portable handheld device;
 Figure 2 is a perspective view of one embodiment of a charge plug for the charging apparatus of Figure 1;
 Figure 3 is a schematic diagram of circuitry for the charging apparatus;
 Figure 4 is a schematic diagram of another embodiment of circuitry for a charging apparatus;
 Figure 5 is a perspective view of another embodiment of a charge plug for a charging apparatus;
 Figure 6 is a perspective view of yet a further embodiment of a charge receptacle for a charging apparatus;
 Figure 7 is a perspective view of a portable electronic device for use with a charge apparatus; and
 Figure 8 is a perspective view of another embodiment of a portable electronic device for use with a charging apparatus.
 In one aspect of the disclosure, the charging apparatus, or adapter, includes a system that may improve safety, such as concerns with respect to overheating or arcs being developed when a power pin is shorted. In another aspect, a portable electronic or handheld device may be configured to mate to the charging apparatus, and in another aspect, the system may operate independently of a portable handheld device.
 In another aspect of the disclosure, there is provided a charging apparatus, or adapter, which supplies full power for charging a power pack (or other chargeable power element) after the apparatus has been connected with a portable handheld device and not when the apparatus has been connected to a metal plate, a body part or any other undesirable material. In general, a material is “undesirable” when the material is sufficiently conductiv...