Abstract: A lamp holder includes a body provided with a recessed room, a metal helical cylinder fitted in the recessed room for a lamp bulb to screw with. The body has a through hole vertically in the body, and an elastic conductive unit is positioned in the through hole. A central conductor is fixed at the bottom side of the body, located at one side of the through hole and connected with one terminal of electricity. The elastic conductive unit consists of a coil spring and a conductive rod fitted around by the coil spring. The conductive rod has its lower end normally separated from the central conductor by the elasticity of the coil spring. Unless a lamp bulb is screwed in the helical cylinder completely, it cannot push down enough the conductive rod to let electricity get through to light up the lamp bulb. Thus the safety of the lamp holder is enhanced.

Abstract: An ground fault circuit interrupter includes two conductive wires, an AC-DC converter, a switch circuit, two annular magnets each having a induction coil, a signal treating and controlling circuit, a manual switch driving circuit, and an electronic switch driving circuit. The switch circuit is connected in series with the conductive wires for cutting off power to the output terminals of the conductive wires. The signal treating and controlling circuit electrified by the AC-DC converter receives signals from the conductive wires and sends out its controlled signal. The connecting point of the input of the switch circuit and the output of the signal treating and controlling circuit is connected in parallel with a manual switch driving circuit and an electronic switch driving circuit, for keeping safety of the electricity between the input of power and the output or a load.

Abstract: A compact fluorescent lampholder includes a fundamental base and a holder body combined together. The fundamental base is provided with a female thread post inside. Electric current is transmitted to two conducting members beside the female threaded post. The holder body is fixed with a center male-threaded post on the topside to be combined with the female threaded post and two conducting posts beside the center threaded post. The conducting posts contacts with the conducting members for receiving electric current after the center male-threaded post is combined with the female threaded post. The conducting posts transmits electric current to a circuit board in the socket body and then to the conducting posts of a CFL under the holder body for starting the CFL to give out light. The holder body and the fundamental base can be separated for facilitating installing of CFLs.

Abstract: A light modulating lamp stand includes a columnar holder having a chamber for receiving a lamp and formed with a first and a second electrode terminal, a circuit board installed on the holder and formed with a first and a second power connecting terminal and a SCR connected with the second electrode terminal of the circular holder and the second power connecting terminal of the circuit board. The SCR has its anode and cathode connected in parallel with an adjustable resistance and a capacitor connected in series. The capacitor has one terminal connected with the second power connecting terminal of the circuit board, and a trigger diode is connected with the other terminal of the capacitor and the gate electrode of the SCR. Thus, brightness of the lamp can be modulated by adjusting and changing resistance value of the adjustable resistance.

Abstract: A cover for terminal screws of a receptacle, which has plug holes with a positive and a negative pole connected with terminal screws with a power line, is composed of a pivotal column, a locking hook and a cover case. The pivotal column is fixed on a sidewall of the receptacle, having a pivotal pin on its top and its bottom. The locking hook is fixed on the other side of the pivotal column on the sidewall. The cover case has a flat projection on the top and the bottom of its inner side, with each flat projection bored with a locking hole, and a locking bar with a rear opening provided at its other side. Then the pivotal pins may insert in the pivotal holes of the flat projections, and the locking bar is to lock with the locking hook, which is then to be confined in the opening, enabling the cover case to close stably on the terminal screws.

Abstract: A compact fluorescent lampholder includes a cap, a shell, an electric board and a base. The cap and the shell are combined together by hooking, and the electric board is combined with the base by plural pins, and then the electric board assembled together with the base is inserted in a hollow space of the shell. A compact fluorescent lamp (CFL) is to be inserted in a groove in the base. Then wires are connected properly between the electric board and electric power so as to light up a CFL fitted in the base. The shell is easily separated from the cap to fall down a little owing to some spare preset length of the wires so it is convenient to replace a CFL or to repair the socket.

Abstract: A halogen lampholder includes a base, a locking spring, two clipping members, two sliding members, a bottom cover, an outer shell and an outer ring. The base is assembled with the locking spring, the clipping members and the sliding members and then, with the bottom cover and the outer shell orderly. The base has a vertical plugging chamber for a fitting portion and two conducting teeth of a lamp to plug in. The locking spring clamps the fitting portion of the lamp. The clipping members connect with the conducting teeth. The sliding members are placed in the base to restrain the locking spring. The bottom cover restrains the locking spring and the clipping members. The outer shell covers the bottom cover, combined with an outer ring and a power-wire tube for a power wire to pass through and reach the clipping members.

Abstract: A chain controlled lamp stand with multi-stage light modulation includes a control device to modulate brightness of a lamp. The control device consists of a chain-controlled switch and a light modulation circuit board controlled by the chain-controlled switch to modulate the brightness of the lamp. The chain-controlled switch in the lamp stand is combined with a rotatable disc, which can be actuated to rotate at its original location by a pull chain. The rotatable disc is assembled thereon with a conducting metal contact strip, and the light modulation circuit board is provided with multi-stage connecting strips, which are able to change, and control voltage waveform. Thus, the metal contact strip is actuated to contact respectively with the multi-stage connecting strips to carry out multi-stage light modulation of the lamp stand.

Abstract: A chain controlled lamp stand with multi-stage light modulation includes a control device to modulate brightness of a lamp. The control device consists of a chain-controlled switch and a light modulation circuit board controlled by the chain-controlled switch to modulate the brightness of the lamp. The chain-controlled switch in the lamp stand is combined with a rotatable disc, which can be actuated to rotate at its original location by a pull chain. The rotable disc is assembled thereon with a conducting metal contact strip, and the light modulation circuit board is provided with multi-stage connecting strips, which are able to change, and control voltage waveform. Thus, the metal contact strip is actuated to contact respectively with the multi-stage connecting strips to carry out multi-stage light modulation of the lamp stand.

Abstract: A multi-directional switch grip includes an insulating body, a lamp socket and an insulating disc positioned between the insulating body and the lamp socket. A pair of terminals, an intermediate contact member and a rotating member with a ratchet respectively on two sides is fixed in the insulating body. A conductive member fits around a large ratchet and has half numbers of contact pieces as that of the large ratchet. One of the terminals and the intermediate contact member contact the teeth of the large ratchet in a turned off condition, or contact the contact pieces in a turned-on condition. A switch grip is provided to be pulled or bent in any direction to move a hooking member, which moves and rotates the large ratchet for a set angle to turn on the switch and the switch is turned off by repeating the same action.

Abstract: A lamp socket having a double-deck center contact strip includes a socket body having an inner hollow provided with a metal threaded sleeve for receiving a lamp. The socket body is provided inside with a curve-shaped center contact strip having one side fixed on the socket body, and the other side turning upward and located in the center of the threaded sleeve but separating from the threaded sleeve. The double-deck center contact strip is composed of a copper and a steel contact strip, the copper contact strip located on top for contacting with the contact under a lamp and conducting elasticity, while the steel contact strip positioned under the copper contact strip for reinforcing the elasticity of the center contact strip, thus maintaining good contact between the lamp socket and the lamp for conducting electricity well, prolonging service life and ensuring safety.

Abstract: A lamp stand with multi-stage light modulation includes plural resistors annularly arranged to form a circular space. The resistors have terminals soldered on the outer walls of U-shaped contact blades, with an empty position terminal provided in the circular space. A light-modulating controller extends in the lamp stand, having a rotor formed with plural slopes on an outer wall for rotor copper strips to rest thereon. A trigger diode is connected to the gate of a triac AC switch and a capacitor is connected to the trigger diode and the paralleled terminals of the resistors and to the main terminals of the triac AC switch. The light-modulating controller is rotated to let the rotor copper strips contact the contact strips of the resistors to turn on power and charge the capacitor. Different resistance values change the breakdown speed of the DIAC and control the gate of the TRIAC to change the voltage effective value of the lamp, thus reaching a goal of light modulating.

Abstract: A rotatable socket for a halogen-lamp. The socket includes a porcelain base having two insert grooves at its bottom and an H-shaped upright post standing on the bottom. A plus and minus contact members respectively positioned in two opposite recessed sides of the H-shaped upright post. The top end of the plus contact member rests on a protruding lug on the top center of the H-shaped upright post. The top end of the minus contact member rests on the top of the right side wing of the H-shaped post. A mica plate is fitted on the H-shaped post and a metal threaded sleeve surrounds the H-shaped post and is fixed with it by rivets, permitting the top end of the plus contact member to protrude out in order to function as a plus terminal and an upper rim of the threaded sleeve presses the top section of the minus contact member to function as a minus terminal.

Abstract: A revised structure of a distribution box of an on-line switch essentially comprised of a distribution box base, wherein four separated wire slots are formed and the left, right and base of the slot are in the shapes triangular of pyramid convexes, a box cover, wherein wire-pressing convexes which correspond to the convexes of the distribution box base are made, and a control element, which is inserted in the space created after the distribution box base and the box cover; after the electric wire being inserted in the wire slots and the distribution base and the box cover being assembled, the convexes can compress the electric wires in four directions and in turn grip the electric wires firmly, preventing the electric wires the risks form loosening, or even falling off, under improper pulling.

Abstract: A lamp socket with a pull string switch includes a socket body, a screw base, and a pull string switch combined in the socket body. The improved feature is two power lead protectors formed on an upper end surface of the socket body for separating two power leads so that the power lead protectors may hamper accidental force of pulline the power leads from directly transmitted to connect points of the power leads. Thus the connect points may not disconnected from the terminals or become badly connected with the terminals, keeping good quality of the power leads in transmitting electricity and safety of using electricity.

Abstract: A lamp base includes a base body, a lamp socket fixed under the base body, a housing protecting the base body and the lamp socket, and a cap closing up the housing. To terminals are provided in the base body to connect to two power wires passing through an upper wire hole of the cap. The cap has a short tube portion extending down from the wire hole to press down the power wires on an upper surface of the base body to secure the power wires tightly so as not to loosen off the two terminals if exterior force should pull the power wires by accident.

Abstract: a pusher switch light socket essentially relates to one to provide a terminal for receiving and holding in position of lead-in wires, one lead-in wire support is provided to the stand of the socket allowing segregation for the installation of the lead-in wires so to stop any improper pull to the lead-in wire from directly transferring to the terminal to prevent the terminal from falling away or causing poor contact, thus to ensure good transmission quality and safe use of the lighting fixture.