Patent ID: 8801443

Claim:
An electrical jack for receiving insertion of an electrical plug having two or more plug contacts that are electrically insulated from other plug contacts, the electrical jack comprising: an enclosure defining an elongate cavity having a longitudinal axis and an opening at one end; a first jack contact positioned within the cavity and adapted to connect to a second circuit; a second jack contact positioned within the cavity so as to contact a first plug contact when the electrical plug is fully inserted; and a sliding switch element having a first position and a second position, wherein: in the first position the sliding switch element is closer to the opening than in the second position; the sliding switch element is biased in the first position; the sliding switch element is configured to be moved parallel to the longitudinal axis of the cavity into the second position as a result of full insertion of the electrical plug; and in the second position the sliding switch element electrically connects the first jack contact to the second jack contact and electrically connects the second jack contact to the first circuit.