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Electrical plug

  • US 5,302,135 A
  • Filed: 02/09/1993
  • Issued: 04/12/1994
  • Est. Priority Date: 02/09/1993
  • Status: Expired due to Fees
First Claim
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1. An electrical plug comprising:

  • a top shell having two parallel grooves on a flat bottom wall thereof;

    a bottom shell having two parallel grooves on a flat top wall thereof respectively connected to the parallel grooves on said top shell;

    an adjusting binding screw inserted through center holes on said top and bottom shells to bind up said top and bottom shells together;

    two contact tubes inserted in said parallel grooves and retained between said top and bottom shells, each contact tube having a rear end connected to an electric wire and a front end for receiving a respective contact pin of an electrical socket;

    a first washer fastened to said top shell on the outside by said adjusting binding screw;

    a plate spring retained between said top shell and said first washer;

    a second washer fastened to said bottom shell on the outside by said adjusting binding screw; and

    wherein each contact tube has a split front end, the diameter of the split front end being reduced by turning said adjusting binding screw inwards.

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