Battery substitute to power and alarm small electronic devices on a display

Apparatus to enable convenient connection to an external power source and alarming means for a battery powered hand-held electronic device on a display, said device lacking means for said connection integral to said device, said device having a battery compartment comprising a pair of battery contacts with each pair consisting of a positive contact and a negative contact, said apparatus comprising:

• electrically insulating housing means having open first and second ends, and an opening intermediate between said ends, and
• an electrically conductive negative terminal on said first end and an electrically conductive positive terminal on said second end, and
• circuitry means within said housing means connected to said positive and negative terminals, said circuitry means further comprising reverse polarity protection means, and an electrical lead from said circuitry protruding through said intermediate opening in said housing and connected to an electrical connector, and
• a shaped metallic object having two ends to form an electrically conductive bridge between a terminal and contact, and with said negative terminal further comprising a cavity to receive an end of said metallic object, and
• wherein said apparatus fits within said battery compartment, with said positive terminal in operative electrical contact with said positive battery contact and with said shaped metallic object interposed between said negative battery contact and said negative terminal of said apparatus which receives an end of said metallic object within said cavity, wherein said metallic object makes operative electrical contact with said contact and said terminal, so that when said connector is connected to said external power source and alarming means, a connection is formed wherein DC current of correct polarity as required by said device is provided to power said device, and said alarm means is activated to transmit an alarm signal to an external alarm if said connection is broken or severed or said apparatus is removed from said device causing said shaped metallic object to be dislodged thereby breaking electrical contact between said apparatus with said device.

Apparatus to enable convenient connection to an external power source and alarming means for a battery powered hand-held electronic device on a display, said device lacking means for said connection integral to said device, said device having a battery compartment comprising a pair of battery contacts with each pair consisting of a positive contact and a negative contact, said apparatus comprising:

• a hollow cylindrically shaped electrically insulating housing comprised of polymeric material, having a first end and a second end, and having an opening intermediate between said ends, and
• a metallic cap mounted on said first end forming a negative terminal and a metallic cap mounted on said second end forming a positive terminal, and
• a printed circuit strip within said housing connected to said metallic caps, said circuitry further comprising reverse polarity protection means, and an electrical lead from said circuitry protruding through said intermediate opening and connected to an electrical connector, and
• a shaped metallic object having two ends to form a bridge between said negative terminal and a battery contact, wherein said negative terminal further comprises a cavity to receive an end of said object, and
• wherein said apparatus fits within said battery compartment, with said positive terminal in operative electrical contact with said positive battery contact and with said shaped metallic object interposed between and forming a bridge between said negative battery contact and said negative terminal which receives an end of said metallic object within said cavity, wherein said metallic object makes operative electrical contact with said contact and said terminal, so that when said connector is connected to said external power source and alarming means, a connection is formed wherein DC current of correct polarity as required by said device is provided to power said device, and said alarm means is activated to transmit an alarm signal to an external alarm if said connection is broken or severed or said apparatus is removed from said device causing said shaped metallic object to be dislodged thereby breaking electrical contact of said apparatus with said device.