Patents by Inventor YunLong Qiao
YunLong Qiao 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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Publication number: 20240372301Abstract: A connector assembly, configured to mate with a mating connector along a mating direction, includes a circuit board, at least one cable, an insulative housing, an electrically conductive unitary shield, a pull tab, and a retention feature. The cable includes a plurality of conductors having front ends terminated at conductive pads of the circuit board. The housing is tightly overmolded around at least a portion of the circuit board. A mating end of the circuit board extends forwardly from a mating face of the housing. The shield includes a top wall extending between a back end and a front end thereof. The pull tab is rotatably attached to the shield near a front end of a top wall of the shield. The retention feature of the shield engages a corresponding retention feature of the mating connector to prevent the connector assembly from unmating from the mating connector.Type: ApplicationFiled: March 24, 2022Publication date: November 7, 2024Inventors: Chin Hua Lim, Saujit Bandhu, YunLong Qiao, Kok Hoe Lee, Siang Sin Foo
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Patent number: 12137521Abstract: A multilayer circuit board includes an upper surface and an opposing lower surface. An electrically insulating layer is disposed between the upper and lower surfaces. A plurality of electrically conductive upper and lower rear pads are disposed proximate a rear edge on the respective upper and lower surfaces for termination of a plurality of wires. The upper and lower rear pads include respective upper and lower rear ground pads substantially aligned with each other and configured for termination of ground wires. A plurality of electrically conductive front pads are disposed proximate a front edge for insertion into a connector and electrically connected to the upper and lower rear pads. An electrically conductive via extends from the upper rear ground pad to the lower rear ground pad and makes electrical and physical contact with each of the upper and lower rear ground pads.Type: GrantFiled: February 24, 2021Date of Patent: November 5, 2024Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee
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Publication number: 20240258742Abstract: A cable assembly is disclosed. The cable assembly includes a housing and a latch connected to the housing, the latch defining a lower pull cross member. The cable assembly also includes a pull disposed proximate the latch. A portion of the pull at least partially travels around the lower pull cross member such that two pull portions extending away from the lower pull cross member are separated by an angle of at least about 30 degrees.Type: ApplicationFiled: April 18, 2022Publication date: August 1, 2024Inventors: Chin Hua Lim, Saujit Bandhu, YunLong Qiao, Kok Hoe Lee
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Publication number: 20240250462Abstract: A cable assembly is disclosed. The cable assembly includes a first cable including a first conductor and a first insulator, a second cable including a second conductor and a second insulator, and a printed circuit board (PCB). A PCB first cable pad is disposed on the PCB, and the first conductor is in electrical communication with the PCB first cable pad. A PCB second cable pad is disposed on the PCB, and the second conductor is in electrical communication with the PCB second cable pad. The first conductor and first insulator each bend at least 30 degrees proximate the PCB first cable pad, the second conductor bends at least 30 degrees proximate the PCB second cable pad, and the second insulator bends proximate the PCB second cable pad less than the second conductor does proximate the PCB second cable pad.Type: ApplicationFiled: May 19, 2022Publication date: July 25, 2024Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Chin Hua Lim
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Publication number: 20240170878Abstract: A connector assembly is disclosed. The connector assembly includes a base extending along a Y-axis and a channel extending through the base along an X-axis. A contact is disposed at least partially within the channel, the contact defining a securement portion and at least one additional portion. The securement portion and the additional portion are defined at different points along the contact as measured along the X-axis, and the securement portion secures to the base at the channel. When the securement portion is at least partially disposed within the channel and secured to the base at the channel, the additional portion is disposed lower than the securement portion as measured along the Z-axis.Type: ApplicationFiled: March 22, 2022Publication date: May 23, 2024Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee
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Publication number: 20230100232Abstract: A multilayer circuit board includes an upper surface and an opposing lower surface. An electrically insulating layer is disposed between the upper and lower surfaces. A plurality of electrically conductive upper and lower rear pads are disposed proximate a rear edge on the respective upper and lower surfaces for termination of a plurality of wires. The upper and lower rear pads include respective upper and lower rear ground pads substantially aligned with each other and configured for termination of ground wires. A plurality of electrically conductive front pads are disposed proximate a front edge for insertion into a connector and electrically connected to the upper and lower rear pads. An electrically conductive via extends from the upper rear ground pad to the lower rear ground pad and makes electrical and physical contact with each of the upper and lower rear ground pads.Type: ApplicationFiled: February 24, 2021Publication date: March 30, 2023Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee
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Patent number: 11462845Abstract: A connector assembly for mounting on and making solderless electrical contact with a printed circuit board includes a plurality of stacked wafer assemblies. Each wafer assembly includes a wafer, a plurality of terminals partially embedded in the wafer where each terminal includes a connecting portion embedded in the wafer, a resiliently compressible mating portion for making solderless contact with a corresponding conductive pad of a PCB and a contact portion. The wafer is molded over the terminals. The wafer assembly also includes a plurality of wires terminated in termination regions at the contact portions of the terminals, and a shield disposed in the recess of the wafer and extending across the wafer. The connector assembly further includes a housing molded over the stacked wafers and the termination regions.Type: GrantFiled: September 28, 2017Date of Patent: October 4, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kok Hoe Lee, Saujit Bandhu, Yunlong Qiao, Rao L. Vittapalli
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Publication number: 20220304149Abstract: A multilayer circuit board includes a plurality of electrically conductive rear pads for termination of a plurality of wires and a plurality of electrically conductive front pads for insertion into a connector. A plurality of pairs of substantially parallel traces extend between and connect the front pads to the rear pads. At least a first pair of traces and the front and rear pads connected thereto are disposed in a same layer of the multilayer circuit board. At least a second pair of traces is disposed in a same layer, and the rear and front pads connected thereto are disposed in a different layer of the multilayer circuit board. At least a third pair of traces are disposed in different layers of the multilayer circuit board. For each trace extending between and connecting the front and rear pads corresponding to the trace, the trace comprises no more than two vias.Type: ApplicationFiled: June 3, 2020Publication date: September 22, 2022Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Vincent Tan
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Publication number: 20220271457Abstract: In a specific embodiment, a connector 100 is disclosed. The connector 100 comprises an insulative housing 102 defining a rear opening 108 for receiving a plurality of electrical wires 110 and a front opening 106 and a circuit board 104 disposed in the housing 102 and comprising a mating section 112 for mating with a corresponding mating section of a mating connector. The mating section 112 protrudes outwardly from the front opening 106 and terminates at a front edge 118 disposed between opposing side edges 114,116 of the mating section 112.Type: ApplicationFiled: February 9, 2022Publication date: August 25, 2022Inventors: Kok Hoe Lee, Saujit Bandhu, YunLong Qiao, Rao L. Vittapalli, Chin Hua Lim
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Patent number: 11355876Abstract: An electrical connector provides electrical connection between first, second, and third printed circuit boards (PCBs). The connector defines spaced apart substantially parallel, first, second and third mating slots and includes a plurality of pairs of first terminals and a plurality of pairs of second terminals. For each pair of first terminals: the first terminals are electrically connected to each other; one of the first terminals is disposed in the first mating slot; and the other of the first terminals is disposed in the third mating slot. For each pair of second terminals: the second terminals are electrically isolated from each other; one of the second terminals is disposed in the second mating slot; and the other of the second terminals is disposed in the third mating slot.Type: GrantFiled: January 27, 2021Date of Patent: June 7, 2022Assignee: 3M Innovative Properties CompanyInventors: YunLong Qiao, Saujit Bandhu, Johannes P. M. Kusters
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Publication number: 20220166157Abstract: A connector assembly comprising a housing, first and second circuit boards, and substantially flat cables. The housing includes a mating end for mating with a mating connector and an opposite cable end for receiving a cable. The first and second circuit boards are disposed inside the housing. Each circuit board includes a plurality of conductive front pads disposed closer to the mating end of the housing and a plurality of conductive rear pads disposed closer to the cable end of the housing and electrically connected to the front pads. At least one front pad of the first circuit board faces, aligns with, and is electrically connected to, at least one rear pad of the second circuit board. The substantially flat cables include a plurality of conductors. The uninsulated front ends of the conductors of the cables terminate at the corresponding rear pads of the first circuit board.Type: ApplicationFiled: March 23, 2020Publication date: May 26, 2022Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Vincent Tan
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Patent number: 11283218Abstract: An electrical connector assembly includes a housing having an upper housing half removably assembled to a lower housing half via a plurality of fasteners. A circuit board is at least partially disposed in a housing cavity formed by the upper and lower housing halves. The circuit board includes a plurality of conductive front and rear pads electrically connected to each other. Flat cables terminate at the conductive rear pads disposed on upper and lower major surfaces of the circuit board. A plurality of alternating ridges and channels is disposed on a top side of the upper housing half, extending along a length of the housing. Bottom surfaces of the channels along a length of the channels are at a same height or higher than uppermost surfaces of the fasteners in the plurality of fasteners. The channels are configured to transfer heat generated by the connector assembly.Type: GrantFiled: July 7, 2020Date of Patent: March 22, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee
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Patent number: 11276949Abstract: In a specific embodiment, a connector 100 is disclosed. The connector 100 comprises an insulative housing 102 defining a rear opening 108 for receiving a plurality of electrical wires 110 and a front opening 106 and a circuit board 104 disposed in the housing 102 and comprising a mating section 112 for mating with a corresponding mating section of a mating connector. The mating section 112 protrudes outwardly from the front opening 106 and terminates at a front edge 118 disposed between opposing side edges 114,116 of the mating section 112.Type: GrantFiled: April 14, 2020Date of Patent: March 15, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kok Hoe Lee, Saujit Bandhu, Yunlong Qiao, Rao L. Vittapalli, Chin Hua Lim
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Publication number: 20210313718Abstract: A connector assembly includes a circuit board that includes conductive front pads conductive rear pads, a cable terminated at the rear pads, and a unitary front housing assembled to the front end the circuit board. The connector assembly also includes flexible contacts assembled to the unitary front housing. The front pads make contact with and deflect the flexible contacts away from the circuit board. The connector assembly also includes a conductive shield assembled to the unitary front housing, and a unitary rear housing tightly overmolded around at least the circuit board and portions of the unitary front housing, the cable, and the shield.Type: ApplicationFiled: September 30, 2019Publication date: October 7, 2021Inventors: Chin Hua Lim, Kok Hoe Lee, Saujit Bandhu, YunLong Qiao, Rao L. Vittapalli
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Publication number: 20210296804Abstract: A connector assembly for mounting on and making solderless electrical contact with a printed circuit board includes a plurality of stacked wafer assemblies. Each wafer assembly includes a wafer, a plurality of terminals partially embedded in the wafer where each terminal includes a connecting portion embedded in the wafer, a resiliently compressible mating portion for making solderless contact with a corresponding conductive pad of a PCB and a contact portion. The wafer is molded over the terminals. The wafer assembly also includes a plurality of wires terminated in termination regions at the contact portions of the terminals, and a shield disposed in the recess of the wafer and extending across the wafer. The connector assembly further includes a housing molded over the stacked wafers and the termination regions.Type: ApplicationFiled: September 28, 2017Publication date: September 23, 2021Inventors: Kok Hoe Lee, Saujit Bandhu, Yunlong Qiao, Rao L. Vittapalli
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Publication number: 20210273357Abstract: A connector that is configured to mate with different mating connectors by virtue of having different removably assembled interchangeable front housing portions includes a rear housing portion that includes a plurality of rear contacts. When the connector is to mate with a particular mating connector, a particular front housing portion of the connector that corresponds to the particular mating connector is selected from a plurality of available different front housing portions. The particular front housing portion is removably assembled to the rear housing portion, so that a plurality of front contacts of the particular front housing portion makes solderless physical and electrical contact with the plurality of rear contacts of the rear housing portion. The plurality of front contacts of the front housing portion are adapted to mate with corresponding contacts of the particular mating connector.Type: ApplicationFiled: June 17, 2019Publication date: September 2, 2021Inventors: KokHoe Lee, Saujit Bandhu, Rao L. Vittapalli, Chin Hua Lim, YunLong Qiao
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Publication number: 20210159619Abstract: A connector assembly includes, a housing, a circuit board that includes a conductive front pad and a conductive rear pad electrically connected to the front pad, and a cable that includes an insulated conductor having a conductor surrounded by an insulating material. The conductor has a diameter not greater than 24 AWG. The uninsulated front end of the conductor is terminated at the rear pad and includes a preformed bend. The connector assembly also includes a recess formed in an external surface and on a lateral side of the housing. The recess is designed to receive and house a spring member of a pull tab that is assembled to the housing. The vertical separation between the recess and the circuit board is h, the average thickness of the cable is t, and h?3t. The preformed bend may include first and second portions connected by a substantially flattened joint.Type: ApplicationFiled: February 4, 2021Publication date: May 27, 2021Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Vincent Tan
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Publication number: 20210151917Abstract: An electrical connector provides electrical connection between first, second, and third printed circuit boards (PCBs). The connector defines spaced apart substantially parallel, first, second and third mating slots and includes a plurality of pairs of first terminals and a plurality of pairs of second terminals. For each pair of first terminals: the first terminals are electrically connected to each other; one of the first terminals is disposed in the first mating slot; and the other of the first terminals is disposed in the third mating slot. For each pair of second terminals: the second terminals are electrically isolated from each other; one of the second terminals is disposed in the second mating slot; and the other of the second terminals is disposed in the third mating slot.Type: ApplicationFiled: January 27, 2021Publication date: May 20, 2021Inventors: YunLong Qiao, Saujit Bandhu, Johannes P.M. Kusters
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Patent number: 10957997Abstract: A connector assembly includes, a housing, a circuit board that includes a conductive front pad and a conductive rear pad electrically connected to the front pad, and a cable that includes an insulated conductor having a conductor surrounded by an insulating material. The conductor has a diameter not greater than 24 AWG. The uninsulated front end of the conductor is terminated at the rear pad and includes a preformed bend. The connector assembly also includes a recess formed in an external surface and on a lateral side of the housing. The recess is designed to receive and house a spring member of a pull tab that is assembled to the housing. The vertical separation between the recess and the circuit board is h, the average thickness of the cable is t, and h?3t. The preformed bend may include first and second portions connected by a substantially flattened joint.Type: GrantFiled: October 29, 2019Date of Patent: March 23, 2021Assignee: 3M Innovative Properties CompanyInventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Vincent Tan
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Publication number: 20210075161Abstract: An electrical connector assembly includes a housing having an upper housing half removably assembled to a lower housing half via a plurality of fasteners. A circuit board is at least partially disposed in a housing cavity formed by the upper and lower housing halves. The circuit board includes a plurality of conductive front and rear pads electrically connected to each other. Flat cables terminate at the conductive rear pads disposed on upper and lower major surfaces of the circuit board. A plurality of alternating ridges and channels is disposed on a top side of the upper housing half, extending along a length of the housing. Bottom surfaces of the channels along a length of the channels are at a same height or higher than uppermost surfaces of the fasteners in the plurality of fasteners. The channels are configured to transfer heat generated by the connector assembly.Type: ApplicationFiled: July 7, 2020Publication date: March 11, 2021Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee