Tamper resistant power receptacle having a safety shutter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8193445
APP PUB NO 20090236115A1
SERIAL NO

12412667

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A safety shutter for a power receptacle includes two identical sliding blocks engaged with each other and two biasing members. Each sliding block has a base and a platform extending from the base with a slanted surface. The slanted surfaces are disposed below the holes of the receptacle. The biasing members are helical torsion springs disposed at the end of the sliding blocks. The platform of each sliding block is disposed above the base of the other sliding block so the shutter normally blocks access to the conductors inside the receptacle. When two prongs of a plug are inserted into both holes, the prongs push on both slanted surfaces, causing the shutter to open. When a foreign object is inserted into only one hole, only one sliding block is moved by the foreign object and the base of the other sliding block still blocks access to the conductors.

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Patent Owner(s)

Patent OwnerAddress
BINGHAM MCCUTCHEN LLP2020 K STREET NW WASHINGTON DC 20006-1806

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Cheng-li Shanghai, CN 7 102

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