Patent ID: 7665997

Claim:
A rotatable electric plug comprising: a bottom case having a bottom surface; a top surface; an opening being formed through the top surface of the bottom case; and a tube being hollow, being formed through the bottom surface of the bottom case and having a top end; a lower end protruding from the bottom surface of the bottom case; and an inner surface; a rotatable brace being rotatably mounted in the inner surface of the tube, being positioned in the tube and having a brace body having a shape corresponding to and being movably surrounded by the inner surface of the tube and having a brace annular surface; a stand being formed on the brace body and having a top end; a bottom end being formed through the brace body; a mounting hole being coaxially formed in the stand from the top end through the bottom end; and a top surface having two contact holes being formed in the top surface and communicating with the mounting hole of the stand; two connectors being electronically conductible, being respectively and separately mounted on the top surface of the stand and corresponding to the two contact holes of the top surface of the stand, each connector having a contact arm being electronically conductible, protruding from the connector radially toward the brace annular surface of the brace body and having a distal contact end, where the two contact arms of the two connectors have different lengths to each other; and a connecting pin being electronically conductible, protruding from one of the connectors, being mounted through one of the contact holes and being placed inside the mounting holes; a plug head being detachably and rotatably mounted on the lower end of the tube and having an extending tube having a shape corresponding to and being detachably mounted in the mounting hole of the stand and having two plug holes, the plug holes being longitudinally and separately formed through the extending tube, being respectively aligned with the two contact holes of the stand and each plug hole having an electronically conductible inner surface detachably mounting on one of the connecting pins; and two plug pins being electronically conductible, being respectively mounted in the plug holes and being respectively and electronically connected to the two electronically conductible inner surfaces of the plug holes; a limit cover having a shape corresponding to and being mounted on the top end of the tube to limit the rotatable brace inside the tube, the limit cover having two connecting holes, the connecting holes being respectively formed through the limit cover and aligned respectively with the two connectors; and two conducting members being respectively mounted on the limit cover and being shaped as circles having different radiuses and being respectively deposited corresponding and continuously contacted with to the distal contact ends of the contact arms; and a top cover being mounted on the bottom case to close the opening of the bottom case.