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US 6,604,954 B2Granted
Power plug with safety feature
AssigneePrimax Electronics Ltd.
InventorsKuen-Yan Chu, Yi-Te Ch
Life of this patent
Estimating the term…
Abstract
A power plug has a housing, a voltage prong, a neutral prong, and a ground prong, the prongs set in the housing, and a main body elastically set in the housing and encircling the prongs. When plugging the power plug into a socket, the main body retracts toward the housing. When unplugging the power plug from the socket, the main body is pushed outward to cover the prongs. In such a manner, only a small section of each prong is exposed to open air or the prongs are not exposed at all, increasing the safety of the power plug.
Claims6
A power plug comprising:
- an outer casing;
- a neutral prong and a voltage prong fixed inside the outer casing;
- a main body elastically installed on the outer casing encircling the neutral prong and the voltage prong;
- and
- a sleeve installed between the main body and the outer casing;
- wherein when the power plug is pushed toward a power outlet, the main body is and the sleeve are both retracted toward the outer casing;
- and when the power plug is pulled away from the power outlet, the main body and the sleeve are both pushed away from the outer casing.
4 more elements
Dependencies are inferred from the claim text.