Patents Assigned to Smart Electronics Inc.
-
Patent number: 11776716Abstract: The present invention relates to a circuit protection device including: a device comprising a heating element configured to comprise a body and a pair of electrodes formed on the body, and a pair of lead wires connected, respectively, to the pair of electrodes; and a case having an independent accommodating space formed therein to accommodate at least the heating element, wherein the case includes at least one heat insulating layer disposed in the vicinity of the accommodating space.Type: GrantFiled: February 22, 2022Date of Patent: October 3, 2023Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, Hwang Je Mun, A Lam Shin
-
Patent number: 11764547Abstract: A method for manufacturing a surge absorbing device is provided. The method includes providing an elongate ceramic tube having a hollow space defined therein and having open and opposite first and second end; forming a first plating layer and a second plating layer on the first end and the second end, respectively; placing a surge absorbing element within the hollow space within the ceramic tube; disposing first and second brazing rings on the first plating layer and the second plating layer, respectively; disposing first and second sealing electrodes on the first and second brazing rings respectively; and melting the first and second brazing rings in an inert gas atmosphere to attach the first and second sealing electrodes onto the first plating layer and the second plating layer, respectively.Type: GrantFiled: April 6, 2021Date of Patent: September 19, 2023Assignees: AJOU UNIVERSITYINDUSTRY-ACADEMIC COOPERATION FOUNDATION, SMART ELECTRONICS INC.Inventors: Chang-Koo Kim, Hae-Min Lee, Doo Won Kang, Hyun Chang Kim
-
Patent number: 11302505Abstract: Disclosed is a circuit protection device including a case, a first negative temperature coefficient thermistor which is accommodated in the case and includes a first resistant heating element, a pair of electrodes installed on both sides of the first resistant heating element, and a first lead wire and a second lead wire withdrawn from the pair of electrodes, respectively, a thermal fuse which is accommodated in the case and includes a thermal fuse body and a third lead wire and a fourth lead wire connected to both ends of the thermal fuse body, respectively, and a second negative temperature coefficient thermistor which is accommodated in the case and includes a second resistant heating element, a pair of electrodes installed on both sides of the second resistant heating element, and a fifth lead wire and a sixth lead wire withdrawn from the pair of electrodes, respectively.Type: GrantFiled: September 9, 2020Date of Patent: April 12, 2022Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, A Lam Shin
-
Patent number: 11087944Abstract: Disclosed is a circuit protection device including a case, a negative temperature coefficient thermistor which is accommodated in the case and includes a resistant heating element, a pair of electrodes installed on both sides of the resistant heating element, and a first lead wire and a second lead wire withdrawn from the pair of electrodes, respectively, and a thermal fuse which is accommodated in the case and includes a thermal fuse body and a third lead wire and a fourth lead wire connected to both ends of the thermal fuse body, respectively. Here, the second lead wire and the third lead wire are connected to each other in the case.Type: GrantFiled: September 10, 2020Date of Patent: August 10, 2021Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, A Lam Shin
-
Publication number: 20210226422Abstract: A method for manufacturing a surge absorbing device is provided. The method includes providing an elongate ceramic tube having a hollow space defined therein and having open and opposite first and second end; forming a first plating layer and a second plating layer on the first end and the second end, respectively; placing a surge absorbing element within the hollow space within the ceramic tube; disposing first and second brazing rings on the first plating layer and the second plating layer, respectively; disposing first and second sealing electrodes on the first and second brazing rings respectively; and melting the first and second brazing rings in an inert gas atmosphere to attach the first and second sealing electrodes onto the first plating layer and the second plating layer, respectively.Type: ApplicationFiled: April 6, 2021Publication date: July 22, 2021Applicants: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, SMART ELECTRONICS INC.Inventors: Chang-Koo Kim, Hae-Min Lee, Doo Won Kang, Hyun Chang Kim
-
Patent number: 11005235Abstract: A method for manufacturing a surge absorbing device is provided. The method includes providing an elongate ceramic tube having a hollow space defined therein and having open and opposite first and second end; forming a first plating layer and a second plating layer on the first end and the second end, respectively; placing a surge absorbing element within the hollow space within the ceramic tube; disposing first and second brazing rings on the first plating layer and the second plating layer, respectively; disposing first and second sealing electrodes on the first and second brazing rings respectively; and melting the first and second brazing rings in an inert gas atmosphere to attach the first and second sealing electrodes onto the first plating layer and the second plating layer, respectively.Type: GrantFiled: August 10, 2016Date of Patent: May 11, 2021Assignees: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, SMART ELECTRONICS INC.Inventors: Chang-Koo Kim, Hae-Min Lee, Doo Won Kang, Hyun Chang Kim
-
Publication number: 20180254612Abstract: The present disclosure provides a method for manufacturing a surge absorbing device, the method comprising: providing an elongate ceramic tube having a hollow space defined therein and having open and opposite first and second end; forming a first plating layer and a second plating layer on the first end and the second end, respectively; placing a surge absorbing element within the hollow space within the ceramic tube; disposing first and second brazing rings on the first plating layer and the second plating layer, respectively; disposing first and second sealing electrodes on the first and second brazing rings respectively; and melting the first and second brazing rings in an inert gas atmosphere to attach the first and second sealing electrodes onto the first plating layer and the second plating layer, respectively.Type: ApplicationFiled: August 10, 2016Publication date: September 6, 2018Applicants: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUN DATION, SMART ELECTRONICS INC.Inventors: Chang-Koo KIM, Hae-Min LEE, Doo Won KANG, Hyun Chang KIM
-
Patent number: 9735551Abstract: A surge absorber and a manufacturing method thereof are disclosed. Since a ceramic material with excellent mechanical strength is used to form a ceramic tube and the ceramic tube is joined to sealing electrodes by use of brazing rings according to the method of manufacturing the surge absorber, durability of the surge absorber is considerably improved. Since the ceramic tube is completely sealed, the surge absorber may be stably used at a high voltage.Type: GrantFiled: November 11, 2013Date of Patent: August 15, 2017Assignee: SMART ELECTRONICS INC.Inventors: Jong il Jung, Doo Won Kang, Gyu Jin Ahn, Sang Joon Jin, Hyun Chang Kim, Kyung Mi Lee, Dong Ho Jeon, Dong Jin Kang
-
Patent number: 9722418Abstract: Disclosed is a complex protection device including a substrate, fuse terminals provided on the substrate, first resistive terminals provided on the substrate so as to be separated from the fuse terminals, second resistive terminals provided on the substrate opposite to the first resistive terminals across the fuse terminals, a fusible element connected to the fuse terminals, a first surface-mounted resistive element connected to the first resistive terminals, a second surface-mounted resistive element connected to the second resistive terminals, at least one printed resistive element connected to at least one of the first resistive terminals and the second resistive terminals and connected to at least one of the first surface-mounted resistive element and the second surface-mounted resistive element, and a switching element controlling flow of current to the first and second surface-mounted resistive elements and the at least one printed resistive element if overvoltage is applied.Type: GrantFiled: February 26, 2015Date of Patent: August 1, 2017Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, Hyun Chang Kim, Kwang Beom Kim, Saeng Soo Yun, Hyuk Jae Kwon
-
Patent number: 9697969Abstract: Disclosed is a fuse resistor provided on an electrical circuit to protect the electrical circuit and elements. The fuse resistor includes a substrate on which first and second resistive terminals and fuse terminals are formed, first and second resistive elements surface-mounted on the first and second resistive terminals and dividing applied current or voltage, and a temperature fuse surface-mounted on the fuse terminals and broken by heat generated from the first and second resistive elements. If overcurrent or overvoltage is applied, the first and second resistive elements generate heat and the temperature fuse is broken by the generated heat.Type: GrantFiled: March 12, 2015Date of Patent: July 4, 2017Assignee: Smart Electronics Inc.Inventors: Doo Won Kang, Hyun Chang Kim, Hwang Je Mun, A Lam Shin
-
Patent number: 9607795Abstract: A complex protection device for blocking an abnormal state of current and voltage is disclosed. In the complex protection device, a resistive element is configured in the form of a structure and thus the resistive element has enhanced durability and surface mounting technology suitable for automation may be utilized, and a plurality of resistive elements is configured in various resistances and sizes to be optimally designed for product characteristics.Type: GrantFiled: November 22, 2013Date of Patent: March 28, 2017Assignee: SMART ELECTRONICS INC.Inventors: Jong il Jung, Doo Won Kang, Gyu Jin Ahn, Sang Joon Jin, Hyun Chang Kim, Kyung Mi Lee, Eun Min Kim, Tae Hun Kang, Kwang Hoon Lee, Sang Min Ahn
-
Patent number: 9589711Abstract: A resistor and a manufacturing method thereof are disclosed. Since a ceramic tube formed of a ceramic material is used and the ceramic tube is joined to sealing electrodes by use of brazing rings, joining strength and durability of the resistor are considerably improved. The resistor may be stably used at a high voltage due to excellent heat dissipation characteristics thereof.Type: GrantFiled: November 7, 2013Date of Patent: March 7, 2017Assignee: SMART ELECTRONICS INC.Inventors: Jong il Jung, Doo Won Kang, Gyu Jin Ahn, Sang Joon Jin, Hyun Chang Kim, Kyung Mi Lee
-
Patent number: 9508519Abstract: A fuse and a manufacturing method thereof are disclosed. Since a nonconductive member formed of a ceramic material with excellent mechanical strength and a ceramic tube are used and the ceramic tube is joined to sealing electrodes by use of brazing rings, durability of the fuse is considerably improved. The fuse may be stably used at a high voltage by improving time-lag characteristics.Type: GrantFiled: November 6, 2013Date of Patent: November 29, 2016Assignee: SMART ELECTRONICS INC.Inventors: Jong il Jung, Doo Won Kang, Gyu Jin Ahn, Sang Joon Jin, Hyun Chang Kim, Kyung Mi Lee, Kwang Beom Kim, So Young Kim
-
Publication number: 20150303011Abstract: A complex protection device for blocking an abnormal state of current and voltage is disclosed. In the complex protection device, a resistive element is configured in the form of a structure, and thus, the resistive element has enhanced durability, surface mounting technology suitable for automation may be used, and an insulation distance may be sufficiently secured when a fusible element is blown out.Type: ApplicationFiled: November 22, 2013Publication date: October 22, 2015Applicant: SMART ELECTRONICS INC.Inventors: Jong il JUNG, Doo Won KANG, Gyu Jin AHN, Sang Joon JIN, Hyun Chang KIM, Kyung Mi LEE, Eun Min KIM, Tae Hun KANG, Kwang Hoon LEE, Sang Min AHN
-
Publication number: 20130118004Abstract: Disclosed are a small fuse and a method of manufacturing the same. A cover made from thermosetting resin is coupled with is a base to receive a fusing element therein. The fusing element does not cause damage to the cover even if the fusing element makes contact with an inner wall of the cover due to size reduction of the cover.Type: ApplicationFiled: January 7, 2013Publication date: May 16, 2013Applicant: SMART ELECTRONICS INC.Inventor: SMART ELECTRONICS INC.
-
Patent number: 8400252Abstract: Disclosed is a fuse resistor representing superior manufacturing efficiency and assembling reliability. The fuse resistor includes a resistor, a thermal fuse that is disconnected by heat generated from the resistor, and a case receiving the resistor and the thermal fuse therein and having a space section for transferring radiant heat of the resistor to the thermal fuse. Fillers are not required so that the manufacturing process is simplified. Since the assembling process is completed by covering a body of the case with a cap after the resistor and the thermal fuse have been inserted into the body, the manufacturing efficiency is improved.Type: GrantFiled: April 21, 2010Date of Patent: March 19, 2013Assignee: Smart Electronics Inc.Inventors: Jong Il Jung, Doo Won Kang, Gyu Jin Ahn, Sung Kwang Kim, Kyung Mi Lee
-
Patent number: 8400253Abstract: Disclosed are a thermal fuse resistor having a case injection-molded by using thermosetting resin having heat resistance less than that of a filler, a manufacturing method of the thermal fuse resistor, and a method of installing the thermal fuse resistor such that a resistor and a thermal fuse are laid down on a printed circuit board. In the thermal fuse resistor, through changing a material of the case, the case has a lighter weight and is not easily broken, so that the thermal fuse resistor is advantageously used for an electronic appliance because of its lightness and slimness. The thickness of the case of the thermal fuse resistor serves as the thickness of the electronic appliance employing the thermal fuse resistor, so that the thermal fuse resistor allows the electronic appliance to have a slim structure.Type: GrantFiled: April 21, 2010Date of Patent: March 19, 2013Assignee: Smart Electronics Inc.Inventors: Jong II Jung, Doo Won Kang, Gyu Jin Ahn, Sung Kwang Kim, Kyung Mi Lee
-
Patent number: D933023Type: GrantFiled: March 12, 2020Date of Patent: October 12, 2021Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, A Lam Shin
-
Patent number: D933024Type: GrantFiled: March 12, 2020Date of Patent: October 12, 2021Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, A Lam Shin
-
Patent number: D933025Type: GrantFiled: March 12, 2020Date of Patent: October 12, 2021Assignee: SMART ELECTRONICS INC.Inventors: Doo Won Kang, A Lam Shin