Mao-Chang
Mao-Chang Chuang, New Taipei TW
Patent application number | Description | Published |
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20140304841 | ELECTRONIC DEVICE USING DATA THEFT PROTECTION - An electronic device includes a washer, a printed circuit board, and a screw. The printed circuit board includes a copper foil, a detecting unit and a processing unit. The copper foil comprises a plurality of electrical signal interfaces surrounding a first via defined in the copper foil. The washer defines a second via and includes a transmission metal. The screw combines the printed circuit board and the washer through the second via and the first via. The detecting unit stores an original logic level signal, and detects logic level signals of the electrical signal interfaces in real-time. The processing unit compares the original logic level signal and the detected logic level signal, to determine whether the electronic device is disassembled. If the electronic device is disassembled, the electronic device stops working. | 10-09-2014 |
Mao-Chang Li, Shenzhen CN
Patent application number | Description | Published |
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20140356133 | FAN POWER SUPPLY CONTROL SYSTEM - A fan power supply control system includes a power supply module, a power control circuit, a signal control circuit, a PWM generator. The power supply is adapted to input a power signal to a fan. The power control circuit is between the power supply module and the fan and adapted to connect or disconnect the power supply module to the fan. The signal control circuit is connected the power supply module to the power control circuit and adapted to switch on or off the power control circuit. The PWM generator is adapted to generate a predetermined cycle square signal according to the power signal, to intermittently switch on or off the signal control circuit, and a switch on/off state of the power control circuit is synchronous with the signal control circuit. | 12-04-2014 |
Mao-Chang Lin, Taipei Hisen TW
Patent application number | Description | Published |
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20080257816 | Structure of filter - An engagement structure of a filter comprises an upper cover; a middle side of the upper cover being formed with an outer thread; a tapered portion being extended from a lower end of the portion of the upper cover having the outer thread; and a tube having a flange at an upper side thereof; an inner side of the tube being formed with an inner thread which is corresponding to the outer thread of the upper cover; a tapered hole being extended at an inner side of the tube and below the portion of the tube having the inner thread; the tapered hole having a shape corresponding to that of the tapered portion of the upper cover. An outer periphery of the tapered portion or an inner periphery of the tapered hole is formed with a plurality of annular grooves for receiving a plurality of washers. | 10-23-2008 |
Mao-Chang Yang, Taipei TW
Patent application number | Description | Published |
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20140078754 | LAMP WITH HEAT DISSIPATING APPARATUS - A lamp which includes an outer barrel, a light barrel, a plurality of fins, a heat-conducting disk, a LED module, a first lid and a second lid. The light barrel is received in the outer barrel, and has an inner thread. The fins connect an inner side of the outer barrel and an outer side of the light barrel. The heat-conducting disk has an outer thread on an edge which is to be meshed with the inner thread of the light barrel. The LED module is mounted on the heat-conducting disk. The first lid and the second lid engages two ends of the light barrel. An opening of the first lid communicates an opening at the end of the light barrel, and an opening of the second lid communicates another opening at the opposite side. Therefore, the heat generated by the LED module could be dissipated via the heat-conducting disk. | 03-20-2014 |