Abstract: A lamp socket in which the socket body is formed of two symmetrical halves connected together a dovetail joint; a rubber packing ring is mounted around the bottom lamp hole of the socket body to prohibit water from passing to the inside of the socket body after the installation of the lamp bulb; a movable metal contact plate is suspending inside the socket body and adapted for connecting the tip contact of the lamp bulb to the positive metal contact plate upon the insertion of the lamp bulb in the socket body; a spring is mounted inside the socket body to force the movable metal contact plate downwardly away from the positive metal contact plate after the removal of the lamp bulb.

Abstract: A water-tight Christmas tree light which includes a lamp socket having an outward flange around one end thereof, an outer projecting wall raised around the periphery, and an outside annular groove around the periphery between the outward flange and the outer projecting wall; a lamp bulb fastened to the lamp socket; and a rubber sealing cap having a tapered, hollow, cylindrical cap body mounted on the lamp socket around the lamp bulb to seal the gap between the lamp socket and the lamp bulb, an inward top flange pressed on the periphery of the lamp bulb, a chamfered bottom edge forced into the outside annular groove of the lamp socket, an inside annular flange, an inside projecting wall disposed between the inside annular flange and the chamfered bottom edge, the inside annular flange stopped against and between the inside projecting wall and the periphery of the lamp bulb, and an inside annular groove defined within the cap body and the inside projecting wall to snugly receive the outer projecting wall of the

Abstract: A water-tight lamp socket which includes a rubber packing ring mounted around the socket body and having two recessed portions disposed at two opposite ends of the wire groove on the socket body, two water sealing retainers respectively mounted around the electric wire in the wire groove of the socket body and set in the recessed portions of the rubber packing ring and held down by the socket cap of the lamp socket to seal the gap of the wire groove, and a water sealing ring mounted within the socket body to seal the gap between the socket body and the lamp bulb.

Abstract: A lamp assembly for Christmas tree light sets, including a lamp socket having a positive metal contact plate with raised portions and a negative metal contact plate on the inside, and a lamp bulb threaded into the lamp socket to force its ring contact and tip contact into contact with the negative metal contact plate and the positive metal contact plate, wherein the lamp bulb has a plurality of grooves spaced around the topmost edge of the ring contact, the grooves causing the negative metal contact plate to make sound when they are moved over the raised portions of the negative metal contact plate during the installation of the lamp bulb in the lamp socket, so that the operator can sense that the lamp bulb is threaded into position when no sound is produced.

Abstract: A lamp socket in which the socket body is formed of two symmetrical halves, having opposite inside flanges transversely disposed at the top, which hold two opposite ends of the positive contact metal plate, and an inside receptacle, which holds the bottom end of the negative contact metal plate, the two symmetrical halves of the socket body having opposite longitudinal ribs of substantially triangular cross section, respectively fastened together by two fastening blocks through dovetail joints to securely hold the two symmetrical halves matched.

Abstract: A lamp socket of the type having a first contact metal plate and a second contact metal plate fastened to a socket body thereof, and a socket cap fastened to the socket body to hold down an electric wire causing the first and second contact metal plates to make a respective electric contact with either conductor of the electric wire, wherein two toothed locating plates are mounted within two vertical mounting holes on the socket body to mesh with the threaded base of the bulb so that the bulb is prohibited from being pulled out of the socket body in the axial direction without through a rotary motion.

Abstract: An improved structure of lamp socket in which the socket body consists of two hinged symmetrical halves retained in shape by a hoop; the positive contact metal plate is made of L-shaped configuration mounted in the top of the socket body on the inside and supported between two inside flanges; the negative contact metal plate is a flat plate vertically laterally disposed inside the socket body and having the bottom end stopped at a receptacle inside the socket body.

Abstract: A lamp socket of the type having a socket body to hold a lamp bulb. A socket cap is fastened to the socket body to hold an electric wire in place, and positive and negative contact plates are mounted in the socket body to connect the electric wire to the lamp bulb electrically. The negative contact plate is mounted in one L-shaped angle slot on the socket body, having a plurality of raised portions bearing against the inside wall of the socket body. A horizontal stop rod stops or rests against the socket body and a toothed projection meshes with a threaded ring contact of the lamp bulb. A locating plate is mounted in an L-shaped angle slot in the socket body remote from the negative contact metal plate, having a plurality of raised portions bearing against the inside wall of the socket body. A horizontal stop rod engages the socket body and a toothed projection meshes with the threaded ring contact of the lamp bulb.

Abstract: A lamp socket of the type having a first contact metal plate and a second contact metal plate fastened to a socket body thereof, and a socket cap fastened to the socket body to hold down an electric wire causing the first and second contact metal plates made a respective electric contact with either conductor of the electric wire, wherein a contact metal socket is fastened to the socket body on the inside through a screw joint to hold the lamp bulb, causing the ring contact of the lamp bulb electrically connected to the second contact metal plate and permitting the tip contact of the lamp bulb to extend out of a hole on the contact metal socket and to make an electric contact with the first contact metal plate, the contact metal socket having a serrated outward flange at the bottom engaging the inside wall of the socket body to secure the connection between the socket body and the contact metal socket.

Abstract: A lamp socket assembly comprises: (1) a socket shell with the top end being closed by a top wall with a central opening; (2) a socket cap fastened to the socket shell for holding down an electrical wire; (3) a first metal contact positioned between the socket cap and the top wall of the socket shell, the first metal contact for making electrical contact with the tip contact of a lamp bulb and with one conductor of the electrical wire; and (4) a second metal contact for making electrical contact with the ring contact of a lamp bulb and with at another conductor of the electrical wire. The first metal contact comprises an arched portion, which is received by and protrudes through the central opening in the top wall of the socket shell to make electrical contact with the tip contact of a lamp bulb.

Abstract: A lamp socket comprised of a socket shell, a socket body fitted into a socket shell to hold a lamp bulb, and a mounting device fastened to the socket shell to hold the electric wire of a light string, wherein the socket shell has stop blocks to stop the socket body from rotary motion relative to the socket shell; the mounting device has bottom blocks pressed on the electric wire against the socket shell; the socket body has two opposite projecting strips inserted through holes on the socket shell and respectively bent inward to hold down the electric wire.