Patents Assigned to Denki Kogyo Company Limited
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Publication number: 20230378644Abstract: An object of the present invention is to make it possible to flexibly adjust the incidence wave directivity in a vertical plane or a horizontal plane by making the incident directivity reconfigurable. Provided is a variable reflect array, having a variable mechanism unit configured to change interval between the plurality of supercells, and, the variable mechanism unit is configured to change one of an incidence angle and a reflection angle with respect to the electromagnetic wave of the predetermined wavelength, and, keep the other of the incidence angle and the reflection angle constant with respect to the electromagnetic wave of the predetermined wavelength, by changing the interval between the plurality of supercells.Type: ApplicationFiled: October 25, 2021Publication date: November 23, 2023Applicant: Denki Kogyo Company, LimitedInventors: Takayoshi SASAKI, Tanan HONGNARA, Yoshiki SHIRASAWA, Katsumori SASAKI
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Patent number: 11570856Abstract: Provided is an induction heating device with which discharging can be easily avoided even when a large electric current is used. The induction heating device comprises a high-frequency power supply provided with a connection portion for an alternating-current power supply, and a heating coil portion connected to the high-frequency power supply. In the heating coil portion, a plurality of coils include n coils surrounding a cavity portion in a plane, wherein the plurality of coils are mutually connected in series via one of a plurality of capacitors.Type: GrantFiled: July 2, 2018Date of Patent: January 31, 2023Assignee: DENKI KOGYO COMPANY, LIMITEDInventors: Yohei Awata, Keiichi Kubo, Mitsunori Hayashi, Tetsuo Fusato
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Publication number: 20210092804Abstract: Provided is an induction heating device with which discharging can be easily avoided even when a large electric current is used. The induction heating device comprises a high-frequency power supply provided with a connection portion for an alternating-current power supply, and a heating coil portion connected to the high-frequency power supply. In the heating coil portion, a plurality of coils include n coils surrounding a cavity portion in a plane, wherein the plurality of coils are mutually connected in series via one of a plurality of capacitors.Type: ApplicationFiled: July 2, 2018Publication date: March 25, 2021Applicant: DENKI KOGYO COMPANY, LIMITEDInventors: Yohei AWATA, Keiichi KUBO, Mitsunori HAYASHI, Tetsuo FUSATO
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Patent number: 10665954Abstract: The present invention realizes a thin dual-polarized leaky-wave antenna which uses a CRLH (Composite Right/Left Handed) transmission line and capable of obtaining a high tilt angle in a directivity in the vertical plane while suppressing cross polarization and side lobe at a target operation frequency. Specifically, the present invention provides a leaky-wave antenna including a dielectric substrate, a ground surface formed on a bottom surface of the dielectric substrate, a ground unit formed on a top surface of the dielectric substrate, and a CRLH (Composite Right/Left Handed) transmission line which is arranged adjacent to the ground unit and formed on a top surface of the dielectric substrate and uses a coplanar transmission line with a ground, in which a series capacitor (CL) and a parallel inductor (LL) constituting the CRLH transmission line are formed on a top surface of the dielectric substrate.Type: GrantFiled: May 14, 2018Date of Patent: May 26, 2020Assignee: Denki Kogyo Company, LimitedInventors: Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima, Naobumi Michishita, Keizo Cho
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Patent number: 10422014Abstract: A heat-treatment device 10 includes a table 11 on which a ring-shaped workpiece W can be placed, and a pair of heat processing units 20 for heat-processing the peripheral surface of the workpiece W. The heat-treatment device 10 is used for obtaining the workpiece W having desired properties by the heat-processing the workpiece W while the pair of heat processing units 20 move in opposite directions along the peripheral surface of the workpiece W. The heat-treatment device 10 is configured in such a way that a pair of revolving arms 30 movable relative to the table 11 oscillate the pair of heat processing units 20 relative to the workpiece W, thereby heat-processing the peripheral surface of the workpiece W. By adopting such a configuration, it is possible to obtain a heat-treatment device heat-processing the entire circumference of a ring-shaped workpiece.Type: GrantFiled: March 11, 2015Date of Patent: September 24, 2019Assignees: THK CO., LTD., Denki Kogyo Company, LimitedInventors: Junzo Shimbe, Hiroshi Nakabayashi, Takayuki Sakanoue, Kazuki Yoshiya, Hiroyuki Kai, Shuji Masubuchi, Makoto Nagata
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Publication number: 20190273324Abstract: The present invention realizes a thin dual-polarized leaky-wave antenna which uses a CRLH (Composite Right/Left Handed) transmission line and capable of obtaining a high tilt angle in a directivity in the vertical plane while suppressing cross polarization and side lobe at a target operation frequency. Specifically, the present invention provides a leaky-wave antenna including a dielectric substrate, a ground surface formed on a bottom surface of the dielectric substrate, a ground unit formed on a top surface of the dielectric substrate, and a CRLH (Composite Right/Left Handed) transmission line which is arranged adjacent to the ground unit and formed on a top surface of the dielectric substrate and uses a coplanar transmission line with a ground, in which a series capacitor (CL) and a parallel inductor (LL) constituting the CRLH transmission line are formed on a top surface of the dielectric substrate.Type: ApplicationFiled: May 14, 2018Publication date: September 5, 2019Applicant: Denki Kogyo Company, LimitedInventors: Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima, Naobumi Michishita, Keizo Cho
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Patent number: 10367268Abstract: To provide a leaky-wave antenna that allows dual-polarization without limiting an emission range to either side. The antenna includes as an element unit (AE) a CRLH transmission line configured by multiply connecting CRLH unit cells (UC) in a periodic fashion between one ends and the other ends of two parallel lines (La, Lb). The respective unit cells (UC) have a left-handed series capacitor (C1, C2) on each of the two parallel lines (La, Lb) and have a left-handed parallel inductor (L1) between the two parallel lines (La, Lb). When power is fed between the two parallel lines (La, Lb), the two parallel lines (La, Lb) and the series capacitor (C1, C2) serve to emit a vertical polarization component, and the parallel inductor (L1) and a conductor between the two parallel lines (La, Lb) serve to emit a horizontal polarization component.Type: GrantFiled: February 19, 2015Date of Patent: July 30, 2019Assignee: Denki Kogyo Company, LimitedInventors: Ichiro Oshima, Takuya Seki
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Patent number: 10056990Abstract: The apparatus automatically corrects deformation of directivity in a vertical plane caused by abnormality in transmission paths and receiving paths.Type: GrantFiled: August 12, 2014Date of Patent: August 21, 2018Assignees: DENKI KOGYO COMPANY, LIMITED, KDDI CorporationInventors: Yukitaka Takahashi, Keisuke Sato, Masayuki Nakano
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Publication number: 20180040961Abstract: To provide a leaky-wave antenna that allows dual-polarization without limiting an emission range to either side. The antenna includes as an element unit (AE) a CRLH transmission line configured by multiply connecting CRLH unit cells (UC) in a periodic fashion between one ends and the other ends of two parallel lines (La, Lb). The respective unit cells (UC) have a left-handed series capacitor (C1, C2) on each of the two parallel lines (La, Lb) and have a left-handed parallel inductor (L1) between the two parallel lines (La, Lb). When power is fed between the two parallel lines (La, Lb), the two parallel lines (La, Lb) and the series capacitor (C1, C2) serve to emit a vertical polarization component, and the parallel inductor (L1) and a conductor between the two parallel lines (La, Lb) serve to emit a horizontal polarization component.Type: ApplicationFiled: February 19, 2015Publication date: February 8, 2018Applicant: DENKI KOGYO COMPANY, LIMITEDInventors: Ichiro Oshima, Takuya Seki
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Publication number: 20170346576Abstract: The apparatus automatically corrects deformation of directivity in a vertical plane caused by abnormality in transmission paths and receiving paths.Type: ApplicationFiled: August 12, 2014Publication date: November 30, 2017Applicants: DENKI KOGYO COMPANY, LIMITED, KDDI CORPORATIONInventors: Yukitaka Takahashi, Keisuke Sato, Masayuki Nakano
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Patent number: 9581207Abstract: A structure of a transfer mechanism is supported by a bearing (15) attached to a disc (10) of a rotary table (1), connects between driven shafts (20) extending in a direction parallel to a rotation shaft (11) and a driving shaft (30) which rotates and drives the rotation shaft (11), and transfers rotation power from the driving shaft (30) to the driven shafts (20). Rollers (31) that turn around a radially extending shaft are arranged at intervals on an outer periphery of one of the driven shafts (20) and the driving shaft (30) in a circumferential direction, and at least one radially extending pins (23) are provided on an outer periphery of the other of the driven shafts (20) and the driving shaft (30), and the pins (23) enter among the rollers (31) arranged adjacent to one another in the circumferential direction in a state in which the driven shafts (20) and the driving shaft (30) are connected.Type: GrantFiled: May 28, 2013Date of Patent: February 28, 2017Assignee: Denki Kogyo Company, LimitedInventor: Makoto Tokieda
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Publication number: 20160369366Abstract: A heat-treatment device 10 includes a table 11 on which a ring-shaped workpiece W can be placed, and a pair of heat processing units 20 for heat-processing the peripheral surface of the workpiece W. The heat-treatment device 10 is used for obtaining the workpiece W having desired properties by the heat-processing the workpiece W while the pair of heat processing units 20 move in opposite directions along the peripheral surface of the workpiece W. The heat-treatment device 10 is configured in such a way that a pair of revolving arms 30 movable relative to the table 11 oscillate the pair of heat processing units 20 relative to the workpiece W, thereby heat-processing the peripheral surface of the workpiece W. By adopting such a configuration, it is possible to obtain a heat-treatment device heat-processing the entire circumference of a ring-shaped workpiece.Type: ApplicationFiled: March 11, 2015Publication date: December 22, 2016Applicants: THK CO., LTD., Denki Kogyo Company, LimitedInventors: Junzo Shimbe, Hiroshi Nakabayashi, Takayuki Sakanoue, Kazuki Yoshiya, Hiroyuki Kai, Shuji Masubuchi, Makoto Nagata
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Publication number: 20160123406Abstract: A structure of a transfer mechanism is supported by a bearing (15) attached to a disc (10) of a rotary table (1), connects between driven shafts (20) extending in a direction parallel to a rotation shaft (11) and a driving shaft (30) which rotates and drives the rotation shaft (11), and transfers rotation power from the driving shaft (30) to the driven shafts (20). Rollers (31) that turn around a radially extending shaft are arranged at intervals on an outer periphery of one of the driven shafts (20) and the driving shaft (30) in a circumferential direction, and at least one radially extending pins (23) are provided on an outer periphery of the other of the driven shafts (20) and the driving shaft (30), and the pins (23) enter among the rollers (31) arranged adjacent to one another in the circumferential direction in a state in which the driven shafts (20) and the driving shaft (30) are connected.Type: ApplicationFiled: May 28, 2013Publication date: May 5, 2016Applicant: Denki Kogyo Company, LimitedInventor: Makoto Tokieda
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Patent number: 5563978Abstract: The sleeve holder for an optical connector capable of preventing slip-off or disconnecting of the sleeve holder from a housing and eliminating breaking of a split sleeve due to the increase of an insertion force of the ferrule by maintaining always no-load state for engaging pieces. A tube-shaped main body inserted and held in the housing is mounted therein with a slider slidable in an axis direction. A split sleeve inserting and holding the ferrule is mounted at the insides of a tube body and the slider fixedly engaged coaxially with the main body, and such mount of the split sleeve together with the slider is slidable by a predetermined stroke in the axis direction.Type: GrantFiled: June 20, 1994Date of Patent: October 8, 1996Assignees: Sanwa Denki Kogyo Company Limited, Nippon Telegraph and Telphon Corporation, Honda Tsushin Kogyo Company LimitedInventors: Akira Kawahara, Yuji Shinagawa, Shin'ichi Iwano, Kazunori Kanayama, Yasuhiro Ando, Toshiaki Nakano, Hiromasa Okamura
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Patent number: 4662903Abstract: An electrostatic dust collector is provided with an electrode unit including first and second electrodes arranged to oppose each other across a solid insulator and having positive and negative potentials respectively applied thereto, the second electrode being so disposed that a leading edge portion thereof is located at a position inwardly of a leading edge portion of the first electrode. A gas passageway is formed on a side of the second electrode opposite the first electrode, and an electrically conductive filter element is arranged in the gas passageway so as to be in contact with the second electrode. A gas to be purified, such as air, is forcibly passed through the passageway by a motor-driven fan. The filter element consists of a material, such as steel wool, made up of a multiplicity of fine fibers to provide a large surface area. Owing to its electrical contact with the second electrode, the filter element traps airborne particles on the fine fibers by electrostatic induction.Type: GrantFiled: June 2, 1986Date of Patent: May 5, 1987Assignee: Denki Kogyo Company LimitedInventor: Motoo Yanagawa