US Patent No: 4,904,195

Number of patents in Portfolio can not be more than 2000

Twist-lock female-male plug adapter

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Abstract

An auxiliary male twist-lock plug-adapter for converting a female twist-lock plug-adapter to male. The male adapter is a disc defining an upper and a lower face. Three twist-lock electrode-prongs project from the upper surface, and three conventional electrode-prongs project from the lower surface. Either of the two sets of three prongs may be coupled to the female twist-lock plug adapter so that the other, uncoupled set may be connected to a conventional female plug or to another female twist-lock plug adapter.

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First Claim

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Patent Owner(s)

  • Assignment data not available. Check USPTO

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Thackeray, Michael 2380 Stafford Rd., Thousand Oaks, CA 91361 2 32

Cited Art

Patent Info (Count) # Cites Year
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (3)
4,232,260 Universal battery charger/adapter unit 26 1978
4,585,286 Universal electrical plug adapter 3 1985
4,726,780 Twist-lock female plug adapter 18 1986

Patent Citation Ranking

Forward Cites

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EMERSON CLIMATE TECHNOLOGIES, INC. (1)
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SHIROSHITA INDUSTRIAL CO., LTD. (1)
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OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (4)
6,464,519 Electrical extension cord with convertible plug and accommodating receptacle 7 2001
6,767,255 Temporary power outlet adapter 7 2003
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