Patents by Inventor Danny Liu
Danny Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Temperature adaptive control circuit for a light emitting diode, lighting and/or signaling apparatus
Patent number: 9854635Abstract: An embodiment of the present application provides a temperature adaptive control circuit for a light emitting diode and a lighting and/or signaling apparatus. The control circuit includes: a light emitting diode load circuit unit in which one or more light emitting diodes are connected; and a temperature adaptive circuit unit comprising a positive temperature coefficient thermistor and a negative temperature coefficient thermistor connected in series, wherein the temperature adaptive circuit unit is configured such that current flowing through the one or more light emitting diodes in the light emitting diode load circuit unit is a function of sum of resistance of the positive temperature coefficient thermistor and resistance of the negative temperature coefficient thermistor. It not only can compensate the variation of the luminescent intensity with the temperature in a desired working temperature for the LEDs, but also can achieve overheating protection for the LEDs to avoid damage thereof.Type: GrantFiled: December 5, 2016Date of Patent: December 26, 2017Assignee: VALEO LIGHTING HUBEI TECHNICAL CENTER CO. LTD.Inventors: Dan-Danny Liu, Sylvain Yvon, Biao-Robert Luo -
TEMPERATURE ADAPTIVE CONTROL CIRCUIT FOR A LIGHT EMITTING DIODE, LIGHTING AND/OR SIGNALING APPARATUS
Publication number: 20170164443Abstract: An embodiment of the present application provides a temperature adaptive control circuit for a light emitting diode and a lighting and/or signaling apparatus. The control circuit includes: a light emitting diode load circuit unit in which one or more light emitting diodes are connected; and a temperature adaptive circuit unit comprising a positive temperature coefficient thermistor and a negative temperature coefficient thermistor connected in series, wherein the temperature adaptive circuit unit is configured such that current flowing through the one or more light emitting diodes in the light emitting diode load circuit unit is a function of sum of resistance of the positive temperature coefficient thermistor and resistance of the negative temperature coefficient thermistor. It not only can compensate the variation of the luminescent intensity with the temperature in a desired working temperature for the LEDs, but also can achieve overheating protection for the LEDs to avoid damage thereof.Type: ApplicationFiled: December 5, 2016Publication date: June 8, 2017Applicant: VALEO LIGHTING HUBEI TECHNICAL CENTER CO. LTD.Inventors: Dan-Danny LIU, Sylvain YVON, Biao-Robert LUO -
Patent number: 6312292Abstract: An electrical connector for the specifications beyond CAT5e includes a plurality of metal contact assemblies and a connector entity. The connector entity includes a plurality of slits for inserting therein the metal contact assemblies, and includes a plurality of openings in order that the each of the metal contact assemblies makes an electric contact outside the connector entity. Each of the metal contact assembly includes a first metal contact and a second metal contact. Each of the first metal contact has a first contact part and each of the second metal contact has a third contact part. Both of the first and third contact parts are used for making an electric contact outside the connector entity. Further, each of the first metal contact has a second contact part and each of the second metal contact has a fourth contact part, and both of the second and fourth contact parts are used for making an electrical connection outside the connector entity.Type: GrantFiled: January 23, 2001Date of Patent: November 6, 2001Assignee: Dan-Chief Enterprise Co.Inventor: Danny Liu
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Publication number: 20010005650Abstract: An electrical connector for the specifications beyond CAT5e includes a plurality of metal contact assemblies and a connector entity. The connector entity includes a plurality of slits for inserting therein the metal contact assemblies, and includes a plurality of openings in order that the each of the metal contact assemblies makes an electric contact outside the connector entity. Each of the metal contact assembly includes a first metal contact and a second metal contact. Each of the first metal contact has a first contact part and each of the second metal contact has a third contact part. Both of the first and third contact parts are used for making an electric contact outside the connector entity. Further, each of the first metal contact has a second contact part and each of the second metal contact has a fourth contact part, and both of the second and fourth contact parts are used for making an electrical connection outside the connector entity.Type: ApplicationFiled: January 23, 2001Publication date: June 28, 2001Inventor: Danny Liu
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Patent number: 6206734Abstract: An electrical connector for the specifications beyond CAT5e includes a plurality of metal contact assemblies, a housing, and a slit base. The slit base has a plurality of slits for inserting therein the plurality of metal contact assemblies, and the housing has a slot for slidably receiving the slit base and has a plurality of openings for exposing a portion of the metal contact assemblies. Each of the metal contact assembly includes a first metal contact and a second metal contact. Each of the first metal contact has a first contact part and each of the second metal contact has a third contact part. Both of the first and third contact parts are used for making an electrical contact external to the housing.Type: GrantFiled: January 12, 2000Date of Patent: March 27, 2001Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 6135821Abstract: An adapter structure for providing an interface between an external wire and a circuit board includes an inner unit, an outer unit separable from the inner unit, and a first set of terminals mounted between the inner unit and the outer unit, wherein the terminals respectively include feet for being electrically connected with the circuit board. The adapter structure further includes a second set of terminals mounted between the inner unit and the outer unit, wherein the second terminals respectively include feet for being electrically connected with the circuit board. The first and second sets of terminals are respectively mounted at two opposite sides of the inner unit. The inner unit and the outer unit form a mounting which includes plural positioning elements respectively having plural protrusions and plural grains for positioning the first and the second sets of terminals respectively having plural slots and plural holes thereon.Type: GrantFiled: August 20, 1999Date of Patent: October 24, 2000Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 6042419Abstract: A securing device for securing on a panel a jack, wherein the panel has a window, an outer side and an inner side. The device includes: a plate having a hole for inserting a plug therethrough from the outer side of the panel into the jack located on the inner side of said panel; and an engaging means including two pieces extruding from one side of the plate, having thereon tenons respectively for positioning and securing the engaging means and the plate on the windows of the panel, and slots for engaging therein the at least one barb of the jack to secure the jack.Type: GrantFiled: June 3, 1997Date of Patent: March 28, 2000Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 5688145Abstract: An adapter socket structure and a method for manufacturing the same are disclosed. The adapter socket structure can effectively prevent the external electromagnetic interference effect. The structure includes a signal-transmitting interface device for providing an interface between two networks; and a metal case tightly enveloping the signal-transmitting interface device for preventing the interference of the external noise and reducing the radiation leakage of the transmitted signal, the metal case comprising a first case member and a second case member.Type: GrantFiled: January 29, 1996Date of Patent: November 18, 1997Assignee: Dan Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 5632648Abstract: An adapter fixing device configured to fix an adapter on a panel comprises an upper member held attached to the panel, a lower member coupled with the upper member for fixing therebetween the adapter, and an engaging device combining together the upper member and the lower member. The present invention not only engages an adapter to a wire collecting frame but costs less than other device using the prior art does. The design of the present invention reduces the use of screws or even abandons screws which lowers the chance of losing screws. People skilled in the art will readily appreciate the design.Type: GrantFiled: April 19, 1995Date of Patent: May 27, 1997Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 5488201Abstract: A low crosstalk electrical signal transmission medium includes a plurality of input ends, a plurality of output ends and a plurality of signal transmission lines respectively electrically connected between the input ends and the output ends. The signal transmission line is folded into bends to form a mutually corresponding capacitive arrangement for restoring electric balance of the signal transmission line and reducing crosstalk between signal transmission lines.Type: GrantFiled: December 16, 1994Date of Patent: January 30, 1996Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: 5356311Abstract: A network wall plate includes a wall plate shell, a plurality of transmission-line adapting sockets removably installed on the wall plate shell, a plurality of transmission-line connectors which can be respectively plugged into the transmission-line adapting sockets, and two screw bases capable of passing therethrough screws to fix the wall plate onto a wall surface, wherein at least one of the transmission-line connectors can be removably plugged into one of the transmission-line adapting sockets. The present wall plate is designed to be diversified, to have an increased socket density and/or to provide an improved appearance.Type: GrantFiled: March 25, 1993Date of Patent: October 18, 1994Inventor: Danny Liu
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Patent number: 5228872Abstract: A replaceable and desirable modular jack adapter capable of easily discharging static electricity is provided. The adapter includes a modular jack having a socket, spacedly disposed spring wires, an insulation displacement connector for positioning therein terminals, a printed circuit board respectively electrically connecting the spring wires with the terminals, and a conducting shell mounted around the socket and electrically connected to one of the terminals capable of discharging therethrough any static electricity in the shell.Type: GrantFiled: May 5, 1992Date of Patent: July 20, 1993Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: D400178Type: GrantFiled: April 24, 1997Date of Patent: October 27, 1998Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu
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Patent number: D403568Type: GrantFiled: October 16, 1996Date of Patent: January 5, 1999Assignee: Dan-Chief Enterprise Co., Ltd.Inventor: Danny Liu