Lamp string with an open-circuit-proof structure
OwnerPi-Chu Wonginventor
Life of this patent
Estimating the term…
Abstract
A lamp string with an open-circuit-proof structure, which comprises a socket, a bulb receptacle, a bulb and a fuse assembly; the center hole of the socket is furnished with a rectangular cavity for receiving a fuse assembly, and an outer rectangular cavity for mounting bulb receptacle plugged with a bulb; the center of the socket is furnished with a fuse assembly; in case of the tungsten filament of a bulb being burned out, or a bulb receptacle of a socket being lost, the power-supply circuit can still be maintained in a closed circuit condition through the fuse assembly, i.e., the whole lamp string can be always in lighting-up condition.
Claims6
A lamp string with an open-circuit-proof structure, comprising:
- a socket having a rectangular cavity for mounting a fuse assembly, and a rectangular cavity for plugging a bulb receptacle;
- both sides of said two rectangular cavities being furnished with two contact copper plates respectively;
- a fuse assembly mounted in a rectangular cavity in said socket, and including a fastening member designed in a rectangular shape, and two parallel slots, and a recess;
- and
- a fuse member having a positioning bead for fixing two parallel magnesium-plating filaments;
- a short section of said two parallel magnesium-plating filaments at one end of said positioning bead being wound with a fuse wire;
- a longer section of said two magnesium-plating filaments on other end of said positioning bead extended through two parallel slots of said fastening member, and then being bent along planes thereof;
- a bulb receptacle for mounting a bulb, and two magnesium-plating filaments of said bulb being bent and attached to two planes, and finally being plugged into a plug-connection cavity.
Dependencies are inferred from the claim text.