Chang, HK
Frank Chang, Shang Hai HK
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20150265883 | Game Ball and Method for Making Game Ball - The invention discloses a method of making a game ball. The method comprises utilizing a mold to form a game ball section. The patterned surface is imprinted into the surface of the molded game ball section. The mold is utilized to create a plurality of grooves in the outer surface of the molded game ball section. The plurality of grooves creates a strength and resiliency in the molded game ball section. One or more molded game ball sections are combined edge to edge to create a final game ball. The mold used can be a male mold or a female mold. The molded game ball section can be made through vacuum forming, compression molding, or injection molding. | 09-24-2015 |
James Tseng Hsu Chang, Kowloon HK
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20100181178 | END CAP WITH SAFETY PROTECTION SWITCH - A protective end cap device that includes an end cap casing and a protection switch. The end cap casing includes one or two conductive pins and defines a notch located to one side of the conductive pin. The protection switch is disposed at least in part inside the end cap casing and within the notch, and includes a first switch pin and a second switch pin. The first switch pin is electrically connected to the conductive pin and the second switch pin is electrically connected to a power supply circuit board. | 07-22-2010 |
Kam Chau Chang, Kwai Chung HK
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20080268748 | PRODUCTION OF A BRASSIERE AND BRASSIERE PRODUCED THEREBY - A method of manufacture of a brassiere comprising the steps of providing a first substrate layer; providing thermoplastic polyurethane (hereinafter “TPU”) base material; heating the TPU base material to a molten state; providing a printing roller having recesses on its outer surface; transferring molten TPU material into a recess on a printing roller; transferring the molten TPU onto the first substrate layer by rolling the printing roller over at least part of a surface of the substrate layer; providing a second substrate layer; compressing the first substrate layer and second substrate layer together with the transferred TPU in between the first substrate layer and second substrate layer; heating the compressed first substrate layer and second substrate layer to melt the transferred TPU between the substrate layers, thereby bonding at least part of the first substrate layer and at least part of second substrate layer together to form a laminate; cutting the laminate to form a shape suitable for use in a brassiere; and merging the cut laminate to other components to form a brassiere. | 10-30-2008 |
Kin Fai Chang, Laguna City HK
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20080242193 | Toy Vehicle Booster and Track Set - A booster for accelerating toy vehicles. The booster includes a rotation source and first and second wheels operatively coupled to the rotation source. Each wheel includes a thin-walled member configured to engage toy vehicles passing between the wheels as the rotation source rotates the wheels in opposite directions. The thin walled member is characterized by an S-shape that allows the relative distance between the wheels to change, thereby accommodating differently sized vehicles. | 10-02-2008 |
Kin Fai Chang, Kowloon HK
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20110212667 | Toy Vehicle Booster and Track Set - A booster for accelerating toy vehicles. The booster includes a rotation source and first and second wheels operatively coupled to the rotation source. Each wheel includes a thin-walled member configured to engage toy vehicles passing between the wheels as the rotation source rotates the wheels in opposite directions. The thin walled member is characterized by an S-shape that allows the relative distance between the wheels to change, thereby accommodating differently sized vehicles. | 09-01-2011 |
Kwun Hok Chang, Cheung Sha Wan HK
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20100153774 | DATA STORAGE SYSTEM, METHOD AND DATA STORAGE AND BACKKUP SYSTEM - A data storage system, method and a data storage and backup system are provided. The data storage method comprises defining a local storage of the data processing system as a journal vault; storing data in the journal vault by journaling; sending the data from the journal vault to a transmitter; and transmitting the data from the transmitter to a secondary storage. The present invention enhances a write function of a low performance storage device by journaling. In a case where the present invention is applied to a backup system, the performance of the whole backup system can be improved significantly, and the backup system can be extended to a remote site easily. When a storage of a production system fails, the storage system of the present invention can be switched to “production mode” and service resumes to be provided with the shortest downtime. | 06-17-2010 |
Mei-Fang Chang, Kowloon HK
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20150305490 | Anti-Unfolding Leg Assembly for Foldable Table - An anti-folding leg assembly for a tabletop includes a leg frame for pivotally coupling at a bottom side of the tabletop to pivotally move between a folded position and an unfolded position, and an anti-folding arrangement including a table support having has a table coupling end adapted for pivotally coupling at the bottom side of the tabletop, and a leg support having a leg coupling end pivotally coupled at the leg frame. A pivot point is defined at a pivot connection between the table support and the leg support, and a centerline is defined between the table coupling end of the table support and the leg coupling end of the leg support when the leg frame is moved in the unfolded position, wherein the pivot point is located below the centerline when the leg frame is moved in the unfolded position. | 10-29-2015 |
Ming-Wen Chang, Kowloon HK
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20100309062 | DIAMOND-SHAPED ANTENNA RECEIVING DEVICE - An antenna device includes an enclosure defining a receiving compartment and having a back forming a mounting seat for mounting to a fixture and an end forming a connector for connection with a coaxial cable. A reflection case, which is received in the enclosure, includes reflection plates set around the case and has a bottom stamped to form partially cut tabs that are bent upward by an angle of approximately 90 degrees. The diamond-shaped antenna is composed of two quadrilateral antenna boards received in the reflection case and fixed to the bent tabs and has a central portion to which a waveguide is coupled for connection with the connector of the enclosure through a coaxial cable. The enclosure is closed by a cover plate to protect the diamond-shaped antenna from direct exposure to severe weather. | 12-09-2010 |
20100321254 | POLANAR MULTI-DIRECTIONAL ANTENNA - The planar multi-directional antenna mainly contains a flat casing and a double-layered circuit board housed inside the casing. The circuit board's two major sides are patterned in a symmetrical manner and traces are routed and extended along the circumference of the circuit board for producing multi-directional reception field pattern. A raised metallic plate is configured in the center on a first major side for avoiding the coupling effect from current converging in the center and for overcoming the dielectric loss by using air. A ferrite core is configured at the feeding terminal of the antenna as a means of impedance conversion. A SMD inductor and a SMD capacitor are provided on the other major side for increasing the antenna's capability of receiving signals of larger wavelength. | 12-23-2010 |
20110006951 | OUTDOOR MULTI-CHANNEL ANTENNA - The outdoor multi-channel antenna mainly contains a case, a reflection box, a reception plate, and a cover. The reflection box is placed inside the case. The reception plate has an antenna waveguide element and is placed inside the reflection box. The waveguide element is fixed and positioned by a support seat. The reception plate contains a curved piece and two wing pieces bended 90 degrees downward from the curved piece. The waveguide element is attached to a back side of the reception plate and is connected via a coaxial cable to a terminal threading through the through openings of the reflection box and the case. The cover tightly seals the case by a ring washer sandwiched therebetween and a waterproof plug sleeves over the terminal. | 01-13-2011 |
Ming-Wen Chang, Tsim Sha Tsui HK
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20110025578 | MULTI-DIRECTIONAL PANEL ANTENNA - A multi-directional panel antenna is provided for the reception of TV broadcast VHF and UHF signals. The panel antenna's circuit board has its current path substantially covers the surface of the circuit board so as to produce multi-directional reception patterns. An iron-core winding is configured at a feed-in terminal of the panel antenna for impedance matching and signal concentration. The panel antenna also uses air to reduce dielectric loss. A MMIC signal amplification device is provided for enhanced gain. Ceramic capacitors are provided to increase the reception wavelength of the panel antenna so that it falls within a lower section of the VHF band. | 02-03-2011 |
Po Wah Chang, Kowloon HK
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20110216559 | Constant-Current Control Module using Inverter Filter Multiplier for Off-line Current-Mode Primary-Side Sense Isolated Flyback Converter - A fly-back AC-DC power converter has a constant-current control loop that senses the primary output current in a transformer to control the secondary output without an expensive opto-isolator. A primary-side control circuit can use either a Quasi-Resonant (QR) or a Pulse-Width-Modulation (PWM) control loop to switch primary current through the transformer on and off. A feedback voltage is compared to a primary-side voltage sensed from the primary current loop to turn the switch on and off. A multiplier loop generates the feedback voltage using a multiplier. A level-shift inverter and a low-pass filter act as the multiplier by multiplying an off duty cycle of the switch by the feedback voltage to generate a filtered voltage. A high-gain error amp compares the filtered voltage to a reference voltage to generate the feedback voltage. The multiplier produces a simple relationship between the secondary current and the reference voltage, yielding simplified current control. | 09-08-2011 |
20120126901 | PROGRAMMABLE ELECTRO-MAGNETIC-INTERFERENCE (EMI) REDUCTION WITH ENHANCED NOISE IMMUNITY AND PROCESS TOLERANCE - A frequency dithering circuit reduces emissions that cause Electro-Magnetic Interference (EMI) by spreading the spectrum of a clock. The clock sequences a counter that drives a digital count value to a digital-to-analog converter (DAC). The DAC outputs a sawtooth wave with a wide voltage swing. A subtractor scales down the voltage swing to produce a reduced-swing sawtooth wave which is used as an upper limit voltage. Comparators trigger a set-reset latch to toggle the clock when current pumps charge and discharge a capacitor beyond voltage limits. Since the upper limit voltage is the reduced sawtooth wave from the subtractor, the amount of time to charge the capacitor varies, dithering the period of the clock. The degree of dithering can be adjusted by programming the feedback resistance in the subtractor. The subtractor reduces the sensitivity of dithering to errors in the DAC, allowing for an inexpensive, less precise DAC. | 05-24-2012 |
Rocky K.c. Chang, Kowloon HK
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20110128864 | METHOD FOR MEASURMENT OF NETWORK PATH CAPACITY WITH MINIMUM DELAY DIFFERENCE - A method for achieving fast and efficient measurement of path capacity of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local endpoint to a remote endpoint over a network path and each probe contains at least two outgoing packets and each probe can elicit at least two response packets from the remote endpoint; (b) determining a first minDelay by measuring RTT between the time sending the first probe packet and the time receiving the first response packet; (c) determining a second minDelay by measuring RTT between the time sending the second probe packet and the time receiving the second response packet; and (d) determining a minimum delay difference by subtracting said first minDelay from said second minDelay. The minimum delay difference divided by packet size can be used as a measurement of the network path capacity. | 06-02-2011 |
Ya-Huei Chang, Hk HK
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20150200057 | One-pot Synthesis of Nb2O5-doped TiO2 Nanoparticles - A one-pot synthesis of Nb | 07-16-2015 |
Ying-Nan Chang, Wan Chai HK
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20090113756 | SHOE STRUCTURE AND FABRICATING METHOD OF THE SAME - A method for fabricating a shoe which comprises at least an upper, an insole and an outsole. The lower edge of the upper is formed with a plurality of teeth-like extensions, and the insole has a plurality of slits for allowing the teeth-like extensions passing downward therethrough and to be glued and bonded with the outsole. The shoe structure may further include a peripheral shielding band stitched around the lower portion to avoid the rain, liquid or water running along the teeth-like extensions and penetrate through the slits. | 05-07-2009 |