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Safety electric socket adapter

DC
  • US 5,919,060 A
  • Filed: 07/07/1998
  • Issued: 07/06/1999
  • Est. Priority Date: 07/07/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A safety electric socket adapter comprising:

  • a body, said body comprising an opened front side, an opened rear side, an elongated middle chamber, two side chambers at two opposite sides of said elongated middle chamber, two front sliding tracks longitudinally bilaterally provided at said opened front side, two rear sliding tracks longitudinally bilaterally provided at said opened rear side;

    a first metal rack made by stamping a metal sheet into shape and mounted in the elongated middle chamber of said body, said first metal rack having a plurality of clamping mouths for receiving the grounding prong of one of a set of electric plugs;

    two second metal racks respectively made by stamping a metal sheet into shape and mounted in the side chambers of said body, said second metal racks each having a plurality of clamping mouths for receiving the metal blades of one of a set of electric plugs;

    a face panel covered on the opened front side of said body, said face panel comprising two longitudinal side flanges respectively inserted into the front sliding tracks of said body, a plurality of grounding plug holes and power plug holes for receiving the grounding prong and metal blades of one of a set of electric plugs, spring means provided at a back side wall thereof, sliding gate means moved in respectively sliding ways at the back side wall and forced by said spring means to close said power plug holes, said gate means being moved away from said power plug holes upon the insertion of the power contact metal blades of an electric plug;

    a spring retainer mounted in said body to secure said back board in place, said spring retainer comprising a hooked portion at one end;

    a first metal contact plate mounted in said body and connected to said first metal rack;

    two second metal contact plates mounted in said body and respectively connected to said second metal racks; and

    a back board covered on the opened rear side of said body and secured in place by said spring retainer, said back board comprising two longitudinal side flanges respectively inserted into the rear sliding tracks of said body, a raised retaining portion which is forced into engagement with the hooked portion of said spring retainer when the side flanges of said back board are inserted into the rear sliding tracks of said body, a press rod controlled to disengage said raised retaining portion from the hooked portion of said spring retainer, a grounding prong and two power contact metal blades for inserting into the grounding plug hole and power plug holes of an electric socket, the grounding prong and power contact metal blades of said back board being retained in contact with said first metal contact plate and said second metal contact plates when said back board is coupled to said body, said power contact metal blades each having a front end protruded from a front side wall of said back board and a rear end protruded from a rear side wall of said back board for connection to said second metal racks, two spring-supported gate means forced by respective spring elements to cover the rear ends of said power contact metal blades, said spring-supported gate means of said back board being forced away from the rear ends of said power contact metal blades by said second metal contact plates when said back board is coupled to said body, enabling the rear ends of said power contact metal blades to be forced into contact with said second metal contact plates.

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