Safety plug with switch means
First Claim
1. A safety plug comprising a base having first longitudinal trough and a second longitudinal trough, a first metal contact plate and a first metal blade respectively mounted in said first longitudinal trough, a second metal contact plate and a second metal blade respectively mounted in said second longitudinal trough, a cartridge fuse connected between said second metal contact plate and said second metal blade, a housing covered on said base, and an electric wire having two conductors respectively connected to said first metal contact plate and said second metal contact plate, wherein said first metal blade has a rear contact strip retained inside said first longitudinal trough and spaced from said first metal contact plate;
- said housing has a switch mounting hole for mounting a switch;
said base comprises a post and projecting strip disposed inside said first longitudinal trough to hold said first metal contact plate in a suspended position above the rear contact strip of said first metal blade;
a switch is mounted in the switch mounting hole of said housing, having a bottom projection pressed on said first metal contact plate and moved between a first position, in which said first metal contact plate is forced into contact with the rear contact strip of said first metal blade to close the circuit, and a second position, in which said first metal contact plate is released from the rear contact strip of said first metal blade to cut off the circuit.
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Accused Products
Abstract
A safety plug which includes a first metal contact plate and a second metal contact plate respectively connected to the two conductors of an electric wire, and a first metal blade and a second metal blade for connection to an electric power outlet. A cartridge fuse is connected between the second metal contact plate and the second metal blade. A switch is controlled to force the first metal contact plate into contact with the first metal blade to close the circuit. A base is mounted within a housing to hold the above members therein which has a rear panel and two plug holes on the rear panel for the insertion of an external electric plug for connection the first metal blade and the second metal blade, and a slide controlled to close/open the plug holes of the rear panel.
44 Citations
8 Claims
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1. A safety plug comprising a base having first longitudinal trough and a second longitudinal trough, a first metal contact plate and a first metal blade respectively mounted in said first longitudinal trough, a second metal contact plate and a second metal blade respectively mounted in said second longitudinal trough, a cartridge fuse connected between said second metal contact plate and said second metal blade, a housing covered on said base, and an electric wire having two conductors respectively connected to said first metal contact plate and said second metal contact plate, wherein said first metal blade has a rear contact strip retained inside said first longitudinal trough and spaced from said first metal contact plate;
- said housing has a switch mounting hole for mounting a switch;
said base comprises a post and projecting strip disposed inside said first longitudinal trough to hold said first metal contact plate in a suspended position above the rear contact strip of said first metal blade;
a switch is mounted in the switch mounting hole of said housing, having a bottom projection pressed on said first metal contact plate and moved between a first position, in which said first metal contact plate is forced into contact with the rear contact strip of said first metal blade to close the circuit, and a second position, in which said first metal contact plate is released from the rear contact strip of said first metal blade to cut off the circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- said housing has a switch mounting hole for mounting a switch;
Specification