Patents by Inventor Hak Rok KIM
Hak Rok KIM 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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Patent number: 10683599Abstract: Provided is a washing machine including: a washing tub connected with an outer rotor and an outer shaft; a pulsator connected with an inner rotor and an inner shaft; and a planetary gear set mounted between the inner rotor and the pulsator and between the outer rotor and the washing tub, to thus reduce a rotational force of the inner shaft, wherein at least one of the pulsator and the washing tub is rotated during performing a washing stroke by allowing the washing tub to be rotated for a period of time when the pulsator is stopping, to thus minimize a washing machine stop time during performing a washing stroke to thereby enhance a running rate and improve washing efficiency.Type: GrantFiled: June 15, 2015Date of Patent: June 16, 2020Assignee: AMOTECH CO., LTD.Inventors: Byung Soo Kim, Hyung Hwan Ko, Hak Rok Kim, Se Ki Lee
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Patent number: 10385498Abstract: Provided is a washing machine including: a washing tub connected with an outer rotor and an outer shaft; a pulsator connected with an inner rotor and an inner shaft; and a planetary gear set mounted between the inner rotor and the pulsator and between the outer rotor and the washing tub, to thus reduce a rotational force of the inner shaft, wherein the rotational force of the inner rotor is transmitted to the washing tub by the planetary gear set when a load is applied to the pulsator at the time of an initial start of the inner rotor, to thus lower a starting current and lower an end current at a time when the inner rotor is stopped, to thereby reduce power consumption.Type: GrantFiled: June 15, 2015Date of Patent: August 20, 2019Assignee: AMOTECH CO., LTD.Inventors: Byung Soo Kim, Hyung Hwan Ko, Hak Rok Kim, Se Ki Lee
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Patent number: 10301761Abstract: A washing machine driving apparatus comprises: a drive motor of a double rotor-double stator structure where the drive motor comprises an inner rotor and an outer rotor controllable independently by a double stator, and optionally generating inner rotor output and outer rotor output; a first inner shaft transferring the inner rotor output as a first input; a first outer shaft rotatably coupled to an outer periphery of the first inner shaft, and transferring the outer rotor output as a second input; a planetary gear unit where a gear ratio of a transmission output generated from a carrier is controlled by the second input applied to a ring gear through the first outer shaft, when the first input is applied to a sun gear through the first inner shaft; and a protection unit protecting the inner rotor where an outer peripheral portion of protection unit is supported by the double stator.Type: GrantFiled: April 29, 2015Date of Patent: May 28, 2019Assignee: AMOTECH CO., LTD.Inventors: Byung Soo Kim, Hyung Hwan Ko, Hak Rok Kim, Se Ki Lee
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Patent number: 10050502Abstract: A double stator includes: a stator core; a bobbin wrapped on an outer circumferential surface of the stator core; and a first coil wound on one side of the stator core and a second coil wound on the other side of the stator core. The stator core includes: a lamination type core portion formed by laminating a plurality of iron pieces, on an outer surface of which a first press-fit groove is formed, and on an inner surface of which a second press-fit groove is formed; a first integration type core portion fixed to the first press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a first coil is wound; and a second integration type core portion fixed to the second press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a second coil is wound.Type: GrantFiled: February 3, 2016Date of Patent: August 14, 2018Assignee: AMOTECH CO., LTD.Inventors: Byung Soo Kim, Hak Rok Kim, Hyung Hwan Ko
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Publication number: 20170204551Abstract: Provided is a washing machine including: a washing tub connected with an outer rotor and an outer shaft; a pulsator connected with an inner rotor and an inner shaft; and a planetary gear set mounted between the inner rotor and the pulsator and between the outer rotor and the washing tub, to thus reduce a rotational force of the inner shaft, wherein the rotational force of the inner rotor is transmitted to the washing tub by the planetary gear set when a load is applied to the pulsator at the time of an initial start of the inner rotor, to thus lower a starting current and lower an end current at a time when the inner rotor is stopped, to thereby reduce power consumption.Type: ApplicationFiled: June 15, 2015Publication date: July 20, 2017Applicant: Amotech Co., Ltd.Inventors: Byung Soo KIM, Hyung Hwan KO, Hak Rok KIM, Se Ki LEE
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Publication number: 20170191203Abstract: Provided is a washing machine including: a washing tub connected with an outer rotor and an outer shaft; a pulsator connected with an inner rotor and an inner shaft; and a planetary gear set mounted between the inner rotor and the pulsator and between the outer rotor and the washing tub, to thus reduce a rotational force of the inner shaft, wherein at least one of the pulsator and the washing tub is rotated during performing a washing stroke by allowing the washing tub to be rotated for a period of time when the pulsator is stopping, to thus minimize a washing machine stop time during performing a washing stroke to thereby enhance a running rate and improve washing efficiency.Type: ApplicationFiled: June 15, 2015Publication date: July 6, 2017Inventors: Byung Soo KIM, Hyung Hwan KO, Hak Rok KIM, Se Ki LEE
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Publication number: 20170044705Abstract: A washing machine driving apparatus comprises: a drive motor of a double rotor-double stator structure where the drive motor comprises an inner rotor and an outer rotor controllable independently by a double stator, and optionally generating inner rotor output and outer rotor output; a first inner shaft transferring the inner rotor output as a first input; a first outer shaft rotatably coupled to an outer periphery of the first inner shaft, and transferring the outer rotor output as a second input; a planetary gear unit where a gear ratio of a transmission output generated from a carrier is controlled by the second input applied to a ring gear through the first outer shaft, when the first input is applied to a sun gear through the first inner shaft; and a protection unit protecting the inner rotor where an outer peripheral portion of protection unit is supported by the double stator.Type: ApplicationFiled: April 29, 2015Publication date: February 16, 2017Inventors: Byung Soo KIM, Hyung Hwan KO, Hak Rok KIM, Se Ki LEE
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Publication number: 20160190874Abstract: A single stator includes: a stator core; a bobbin wrapped on an outer circumferential surface of the stator core; and a coil wound on an outer circumferential surface of the bobbin. The stator core comprises: a plurality of integration type core portions that are integrally formed by metal powders, and on which a coil is wound; and a lamination type core portion that is formed in an annular shape by laminating a plurality of iron pieces, and that has at least one press-fit groove is formed in which each of the plurality of integration type core portions is press-fitted into and combined with the at least one press-fit groove.Type: ApplicationFiled: August 25, 2014Publication date: June 30, 2016Inventors: Byung Soo KIM, Hak Rok KIM, Hyung Hwan KO
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Publication number: 20160156255Abstract: A double stator includes: a stator core; a bobbin wrapped on an outer circumferential surface of the stator core; and a first coil wound on one side of the stator core and a second coil wound on the other side of the stator core. The stator core comprises: a lamination type core portion formed by laminating a plurality of iron pieces, on an outer surface of which a first press-fit groove is formed, and on an inner surface of which a second press-fit groove is formed; a first integration type core portion fixed to the first press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a first coil is wound; and a second integration type core portion fixed to the second press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a second coil is wound.Type: ApplicationFiled: February 3, 2016Publication date: June 2, 2016Inventors: Byung Soo KIM, Hak Rok KIM, Hyung Hwan KO