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公开(公告)号：US20240348970A1
公开(公告)日：2024-10-17
申请号：US18621548
申请日：2024-03-29
申请人： EM-TECH Co., Ltd.
发明人： Young Seok Noh
CPC分类号： H04R1/1091 , H04R1/1016 , H04R1/24
摘要： A hybrid receiver includes: a first driver configured to reproduce sound in a first frequency range; a second driver configured to reproduce sound in a second frequency range which is higher than the first frequency range; and a bracket having a side wall covering a side of the first driver, an upper side attached to a top of a diaphragm of the first driver, and a sound emitting hole formed in the upper side and configured to emit sound produced by the first driver. A second driver receiving space is provided in the upper side of the bracket. A back hole of the second driver communicates with an upper space of the diaphragm of the first driver. A communicating hole is formed in the side wall of the bracket and through which air flows in or out of the upper space of the diaphragm of the first driver.
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公开(公告)号：US20230371582A1
公开(公告)日：2023-11-23
申请号：US18112829
申请日：2023-02-22
申请人： EM-TECH Co., Ltd.
发明人： Seung Kiu Jeong , Joong Hak Kwon , Dong Wook Lim , Seung An Lee , Hwan Ock Choe , Ji Hye Jang
IPC分类号： A24D1/20 , A24D1/04 , A24B15/167 , A24D1/00
CPC分类号： A24D1/20 , A24D1/045 , A24B15/167 , A24D1/002
摘要： An electrically heated smoking article includes a filter rod, an aerosol medium rod stacked at a lower end of the filter rod and including an aerosol medium that generates an aerosol by heating and a moisture absorbent accommodating or absorbing the aerosol medium, and a wrapping portion surrounding and wrapping the filter rod and the aerosol medium rod to maintain a stack structure. The aerosol medium, including glycerin and a thickener, is maintained in a semi-solid or solid state in a first temperature range including room temperature and is in a liquefied state in a second temperature range higher than the first temperature range. The glycerin vaporizes in a third temperature range higher than the second temperature range to generate an aerosol. The thickener does not vaporize in the third temperature range but remains in the moisture absorbent.
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公开(公告)号：US20230353944A1
公开(公告)日：2023-11-02
申请号：US18136962
申请日：2023-04-20
申请人： EM-TECH Co., Ltd.
发明人： Gang Tae Kim , Heung Woo Jeong , Hyun Woo Jeong , Hyeon Sik You
摘要： A waterproof microspeaker includes: a frame; a magnetic circuit provided below the frame and including a yoke, inner and outer magnets, and a top plate; a voice coil located between the magnets and configured to vibrate by a magnetic field of the magnetic circuit and mutual electromagnetic force when an electric signal is applied; and a diaphragm housing provided above the frame. The diaphragm housing includes: a sidewall portion provided above the frame and having a predetermined height; an edge dome portion protruding upwardly or downwardly along an inner circumference of the sidewall portion; and a diaphragm provided inside the edge dome, allowing an upper end of the voice coil to be fixed thereto, and configured to generate sound by vibration of the voice coil. The diaphragm includes a polymeric material including metal or plastic and is inserted into an inner circumferential portion of the edge dome portion.
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公开(公告)号：US11696059B2
公开(公告)日：2023-07-04
申请号：US17563655
申请日：2021-12-28
申请人： EM-TECH Co., Ltd.
发明人： Jun Hee Han , Yong Ju Ji
摘要： A two-way receiver includes a cylindrical frame, a yoke dividing an internal space of the frame and including a cylindrical portion, a first flange portion formed at an outer periphery of the cylindrical portion, a connection wall bent downward from the first flange portion, a second flange portion formed at an outer periphery of the connection wall, and a communication hole formed by deleting a portion of the connection wall and second flange portion. A first speaker unit is installed above the yoke, and a second speaker unit below the yoke. A protector coupled to a lower portion of the frame protects the second speaker. A bass duct formed on an outer periphery of the first speaker unit has a sound emission hole for emitting a sound of the first speaker unit emitted to the communication hole of the yoke to a position spaced apart from the communication hole.
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公开(公告)号：US20220400772A1
公开(公告)日：2022-12-22
申请号：US17777181
申请日：2020-11-18
申请人： EM-TECH Co., Ltd.
发明人： Young-je Kim , Kyeong-seong Park
摘要： The present invention relates to a portable aerosol generator that vaporizes a liquid type inhalation material, and more particularly, to a portable aerosol generator that can control the operation by recognizing whether a liquid cartridge or a heater module is genuine and/or whether the liquid cartridge or the heater module is already used. According to the present invention, the portable aerosol generator includes: a main body having a microcontroller and a battery; and a liquid cartridge that is electrically detachably mounted on the main body and that has an identifier, a heating part, and a liquid part for receiving a liquid type inhalation material.
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公开(公告)号：US11528563B2
公开(公告)日：2022-12-13
申请号：US17480227
申请日：2021-09-21
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Jun Hee Han
IPC分类号： H04R11/02
摘要： A hybrid receiver includes a dynamic driver including a frame, magnetic circuit, voice coil vibrated by the magnetic circuit and a mutual electromagnetic force, and a diaphragm to which the voice coil is attached to vibrate, a balanced armature driver including a housing, a magnetic circuit, a coil, an armature magnetized by a magnetic field of the coil to interact with the magnetic circuit, a rod vertically connected to the armature, and a diaphragm vibrated by the rod, and a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emission port configured to emit sound of the dynamic driver. The bracket has a balanced armature driver accommodation space on an upper surface thereof. The balanced armature driver is disposed such that the diaphragm is parallel to the upper surface of the bracket. The housing has a sound emission hole above the diaphragm.
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公开(公告)号：US20220280109A1
公开(公告)日：2022-09-08
申请号：US17668060
申请日：2022-02-09
发明人： Seung Wan Kang , Tae-gyun Jeong , Jong Myung Kim , Bo Hyon Sim
摘要： The present disclosure relates to an EEG measuring device which is in close contact with a head of a subject while having an adjustable size to fit the head of the subject.
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公开(公告)号：US11381898B2
公开(公告)日：2022-07-05
申请号：US17176311
申请日：2021-02-16
申请人： EM-TECH Co., Ltd.
发明人： Cheon Kyu Choi , You Lim Choi
摘要： Disclosed is a canal-type earphone having a pressure equilibrium structure. The canal-type earphone includes: a microspeaker including a frame, a magnetic circuit, a voice coil, and a diaphragm; an earphone housing including an accommodation space accommodating the microspeaker and a nozzle extending to one side of the accommodation space; a vent hole formed at the earphone housing, installed in at least one of portions located in front of the microspeaker in the nozzle and the accommodation space, and allowing air to flow outside and inside the earphone housing; and an eartip coupled to outside of the nozzle of the earphone housing.
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公开(公告)号：US20220210574A1
公开(公告)日：2022-06-30
申请号：US17563715
申请日：2021-12-28
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Ji Hoon Kim , Jong Soo Yoon , Kil Dong Park , Gi Hun Song , Tae Hyun Park
摘要： Provided is a diaphragm for a high water pressure waterproof microspeaker. The diaphragm for a waterproof microspeaker includes an annular dome portion formed of an elastic membrane material and having a dome portion protruding upward or downward, an annular outer periphery portion attached to an outer periphery of the dome portion and injection-molded with a material having rigidity, an annular inner periphery portion attached to an inner periphery of the dome portion and injection-molded with a material having rigidity, and a center diaphragm attached to a center of the inner periphery portion, wherein the outer periphery portion and the inner periphery portion are attached to an edge portion by double-shot injection molding.
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10.发明授权公开(公告)号：US11368784B2
公开(公告)日：2022-06-21
申请号：US17094090
申请日：2020-11-10
申请人： EM-TECH Co., Ltd.
发明人： Yong Hue Kim
摘要： Disclosed is a receiver unit having a pressure equilibrium structure and a compensation structure for a low frequency, including a receiver including a frame, a magnetic circuit, a voice coil, and a diaphragm, an upper casing covering an upper portion and a side surface of the receiver and having a sound insulation hole, and a lower casing attached to a lower surface of the receiver and coupled to the upper casing, wherein a ventilation recess is provided on an outer surface of the upper casing to allow air to flow between an upper space of the upper casing and a lower space of the lower casing, the receiver includes a back hole, and the lower casing includes a duct connecting the back hole and the lower space of the lower casing.
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