Abstract: A group wiring device which has built-in light emitting means and switch mechanism coupled with wire pair receptacle thereof. The switch mechanism is normally on a “CLOSE” status but can be switched to an “OPEN” status when a plug mates with the wire pair receptacle. When the switch mechanism is “CLOSE” and a testing voltage is applied to the circuit of the light emitting means, the light emitting means will emit light for assisting wire pair identification. After the process of wire pair identification is complete, the group wiring device is deemed to be in normal operation, that is, to perform ordinary signal transmitting functions. The wire pair receptacle will then be mated with plug of network cable so as to drive the switch mechanism to become “OPEN”. Therefore, the circuit of light emitting means becomes an open circuit and provides no function at all.

Abstract: A kit for identifying fiber optic connections in a fiber optic cabling system comprises a plurality of indication optic terminators and at least one test light generator. The fiber optic system comprises a patching device, a plurality of ports furnished on the patching device, a plurality of outlets remote from the patching device, and a plurality of fiber optic cables for optically connecting the ports and the outlets. Plurality of indication optic terminators are attached onto each of the ports of the patching device. By using the test light generator to apply a test light to one of the outlets, the test light reaches a corresponding connected port of the patching device through the connection of fiber optic cable so as to make the corresponding indication optic terminator attached onto that connected port to light.

Abstract: A kit for identifying fiber optic connections in a fiber optic cabling system comprises a plurality of indication optic terminators and at least one test light generator. The fiber optic system comprises a patching device, a plurality of ports furnished on the patching device, a plurality of outlets remote from the patching device, and a plurality of fiber optic cables for optically connecting the ports and the outlets. Plurality of indication optic terminators are attached onto each of the ports of the patching device. By using the test light generator to apply a test light to one of the outlets, the test light reaches a corresponding connected port of the patching device through the connection of fiber optic cable so as to make the corresponding indication optic terminator attached onto that connected port to light.

Abstract: A group wiring device which has built-in light emitting means and switch mechanism coupled with wire pair receptacle thereof. The switch mechanism is normally on a “CLOSE” status but can be switched to an “OPEN” status when a plug mates with the wire pair receptacle. When the switch mechanism is “CLOSE” and a testing voltage is applied to the circuit of the light emitting means, the light emitting means will emit light for assisting wire pair identification. After the process of wire pair identification is complete, the group wiring device is deemed to be in normal operation, that is, to perform ordinary signal transmitting functions. The wire pair receptacle will then be mated with plug of network cable so as to drive the switch mechanism to become “OPEN”. Therefore, the circuit of light emitting means becomes an open circuit and provides no function at all.

Abstract: A group wiring patching device which has built-in light emitting device and filtering device coupled with wire pair receptacle thereof. When a testing voltage is applied to the circuit of the light emitting device, the light emitting device will emit light for assisting wire pair identification. The filtering device can minimize or even eliminate loop back shorting resulted by the circuit of the connected light emitting when communication signals or low voltage signals being applied thereto. Therefore, the group wiring patching device of the present invention will be able to perform ordinary signal transmitting functions without the need to remove the light emitting device after the wire pair identification process is done.

Abstract: A group wiring patching device which has built-in light emitting means and filtering means coupled with wire pair receptacle thereof. When a testing voltage is applied to the circuit of the light emitting means, the light emitting means will emit light for assisting wire pair identification. The filtering means can minimize or even eliminate loop back shorting resulted by the circuit of the connected light emitting means when communication signals or low voltage signals being applied thereto. Therefore, the group wiring patching device of the present invention will be able to perform ordinary signal transmitting functions without the need to remove the light emitting means after the wire pair identification process is done.

Abstract: A portable computer includes: a main body having keyboard formed thereon, a cover pivotally secured to the main body and operatively covering the main body, a liquid crystal display panel formed on the cover, a backlight cartridge having a backlight and a light diffusion plate normally positioned under the liquid crystal display panel for illuminating the liquid crystal display (LCD) panel for normally displaying the image on the LCD panel, a bottom projection cartridge alternatively substituting the backlight cartridge and positioned under the LCD panel when adapted for overhead projection purpose, a supporting device pivotally secured and normally folded on the cover (or on the main body) and operatively telescopically extended from the cover (or from the main body) to be uprightly erected on the cover (or the main body), and an overhead projection cartridge detachably mounted on the supporting device for projecting light towards the bottom projection cartridge, through which the light is then reflected and

Abstract: A connector includes a body having an interior space for receiving de-twisted wires of a cable therein. The body has a plurality of channels for the insertion of the wires. The channels have openings formed on a front end face of the body so as to allow a portion of the wires to expose outside the front end face of the body to be pulled by an operator's hand to the desired position. The body also has a plurality of slots each receiving a metal contact therein. The metal contacts have piercing ends to penetrate into the wires for holding them in position. The exposed portions of wires are then cut off after being held by the metal contacts and a retainer for retaining the connector to a counterpart connector is removably attached to the body. The body has an open bottom defined by two opposite side walls, each having a reduced height defined by an arc connecting segment so as to allow the operator's finger to insert therein for temporarily holding the wires in position.