Patents by Inventor Hajime Tanaka
Hajime Tanaka 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: 20190250225Abstract: According to one embodiment, an RF circuit includes a directional coupler, processing circuitry, and an adjuster. The directional coupler includes a first port for outputting at least a part of a traveling wave and a second port for outputting at least a part of a reflected wave. The processing circuitry is configured to calculate impedance of a load side that is viewed from the directional coupler, by using a voltage standing wave ratio based on respective outputs from the first port and the second port and a phase of the reflected wave based on an output from the second port. The adjuster is configured to adjust an output from at least one of the first port and the second port based on the impedance calculated by the processing circuitry.Type: ApplicationFiled: February 14, 2019Publication date: August 15, 2019Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Masaki TANJI, Hajime TANAKA, Hiroaki MURAKOSHI
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Patent number: 10232299Abstract: A honeycomb structure includes a honeycomb substrate having a porous partition wall that defines a plurality of cells that extend from an inlet end face as an inlet side for a fluid to an outlet end face as an outlet side for the fluid, and a porous circumferential wall that is monolithically formed with the partition wall, and a coat layer that is disposed on at least a part of the outer surface of the circumferential wall. Here, a part of the coat layer penetrates into the pores of the circumferential wall, and a thickness of the part of the coat layer that penetrates into the pores of the circumferential wall is from 1 to 90% of the thickness of the circumferential wall.Type: GrantFiled: September 8, 2015Date of Patent: March 19, 2019Assignee: NGK Insulators, Ltd.Inventors: Yoshitaka Ito, Hajime Tanaka
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Publication number: 20180373114Abstract: A multimode interferometer includes: a multimode waveguide mesa having a top face extending in a direction of a first axis, a first side face and a second side face that extend in the direction of the first axis, and a first end face and a second end face that are arranged in the direction of the first axis; and a waveguide mesa connected to the first end face at a port; first and second waveguide mesas connected to first and second ports on the second end face. The multimode waveguide mesa has a first side edge line shared by the top face and the first side face, and an end line shared by the top face and the first end face. The first side edge line forms an acute angle with the end line at an outer vertex where the first side edge line and the end line meet.Type: ApplicationFiled: June 25, 2018Publication date: December 27, 2018Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Hajime TANAKA
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Publication number: 20170282164Abstract: A honeycomb structure includes: a honeycomb structure body; and a convex part that protrudes outward from a part of circumference of the honeycomb structure body. The convex part surrounds the circumference of the honeycomb structure body like a ring. The convex part is of a tapered shape at least at one end having a tapered face. The convex part has a circumference coating layer making up the tapered face. The convex part has a maximum thickness of 1 to 20 mm, and a rough-face region on the tapered face, the rough-face region having surface roughness of 5 to 70 ?m. The rough-face region has a total of a rough-face region angle of 108° or more. An inclination angle formed between the tapered face and the extending direction of the cells is 10 to 80 degrees.Type: ApplicationFiled: March 21, 2017Publication date: October 5, 2017Applicant: NGK INSULATORS, LTD.Inventors: Hajime TANAKA, Tomokatsu AOYAMA
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Publication number: 20160074800Abstract: A honeycomb structure includes a honeycomb substrate having a porous partition wall that defines a plurality of cells that extend from an inlet end face as an inlet side for a fluid to an outlet end face as an outlet side for the fluid, and a porous circumferential wall that is monolithically formed with the partition wall, and a coat layer that is disposed on at least a part of the outer surface of the circumferential wall. Here, a part of the coat layer penetrates into the pores of the circumferential wall, and a thickness of the part of the coat layer that penetrates into the pores of the circumferential wall is from 1 to 90% of the thickness of the circumferential wall.Type: ApplicationFiled: September 8, 2015Publication date: March 17, 2016Inventors: Yoshitaka ITO, Hajime TANAKA
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Publication number: 20150209816Abstract: This lubricator device includes an upper roller brush unit that comes into contact with a bead section on the upper side of a tire rotated about a vertical axis and applies a lubrication liquid, a lower roller brush unit that comes into contact with a bead section on the lower side of the tire and applies the lubrication liquid, a lubricator body, and a brush movement unit that connects the upper roller brush units to the lubricator body, and moves the upper roller brush unit and the lower roller brush unit in contact with and away from the tire. The brush movement unit includes a link mechanism that brings the upper roller brush unit close to the tire while moving the upper roller brush unit downward and brings the lower roller brush unit close to the tire while moving the lower roller brush unit upward.Type: ApplicationFiled: September 9, 2013Publication date: July 30, 2015Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hajime Tanaka, Munenori Soejima
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Patent number: 8875835Abstract: A vehicular rear wheel steering device includes a housing, a rod being non-turnable with respect to the housing and movably supported in an axial direction of the rod, and a conversion mechanism arranged between the rod and the housing to convert a rotation of a rotational drive device to a drive force in the axial direction. The housing includes a tubular first bush disposed at a first end and a tubular second bush at a second end. Each bush is slidably engaged to an outer periphery of the rod and supports the rod to be movable in the axial direction. A rod supporting rigidity of the first bush is lower compared to that of the second bush. The first bush is arranged with an elastic body that deforms in a radial direction of the rod. The second bush is arranged with an inner periphery protrusion at which the rod tilts.Type: GrantFiled: February 8, 2012Date of Patent: November 4, 2014Assignee: Aisin Seiki Kabushiki KaishaInventors: Yoichi Fujinori, Hiromitsu Kageyama, Hajime Tanaka, Kenji Hayashi, Koichi Nishimura, Kenjiro Nagata, Naoki Yamaguchi, Akiya Taneda
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Patent number: 8382159Abstract: A steering-force transmitting apparatus including (a) an operating-member-side shaft; (b) a turning-device-side shaft offset from the operating-member-side shaft; and (c) a rotation transmitting mechanism having (c-1) an axially protruding portion provided in one of the two shafts and (c-2) a radially extending groove provided in the other of the two shafts such that the axially protruding portion is engaged in the radially extending groove. The rotation transmitting mechanism is configured to change a rotational phase difference between the two shafts while causing one of the two shafts to be rotated by rotation of the other of the two shafts. An axially end portion of a main body portion of one of the two shafts and an axially end portion of the other of the two shafts overlap with each other in the axial direction.Type: GrantFiled: September 14, 2009Date of Patent: February 26, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, JTEKT CorporationInventors: Hajime Tanaka, Tomonari Yamakawa
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Patent number: 8266980Abstract: A steering apparatus includes a first shaft coupled to a steering wheel, a second shaft arranged to be eccentric relative to the first shaft, and a joint mechanism for coupling the first shaft and the second shaft to each other. The joint mechanism includes a cam having a cam groove that extends in a direction perpendicular to the first shaft, a cam follower that can slide in the cam groove, an eccentric pin for coupling the second shaft and the cam follower to each other at a position eccentric relative to the second shaft. An outer cylinder serving as a protective member is arranged concentrically with the eccentric pin, so as to surround the outer circumference of the eccentric pin. At least part of the eccentric pin and the outer cylinder is arranged in the cam groove.Type: GrantFiled: June 26, 2009Date of Patent: September 18, 2012Assignees: Jtekt Corporation, Toyota Jidosha Kabushiki KaishaInventors: Tomonari Yamakawa, Hajime Tanaka
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Publication number: 20120199413Abstract: A vehicular rear wheel steering device includes a housing, a rod being non-turnable with respect to the housing and movably supported in an axial direction of the rod, and a conversion mechanism arranged between the rod and the housing to convert a rotation of a rotational drive device to a drive force in the axial direction. The housing includes a tubular first bush disposed at a first end and a tubular second bush at a second end. Each bush is slidably engaged to an outer periphery of the rod and supports the rod to be movable in the axial direction. A rod supporting rigidity of the first bush is lower compared to that of the second bush. The first bush is arranged with an elastic body that deforms in a radial direction of the rod. The second bush is arranged with an inner periphery protrusion at which the rod tilts.Type: ApplicationFiled: February 8, 2012Publication date: August 9, 2012Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yoichi FUJINORI, Hiromitsu KAGEYAMA, Hajime TANAKA, Kenji HAYASHI, Koichi NISHIMURA, Kenjiro NAGATA, Naoki YAMAGUCHI, Akiya TANEDA
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Patent number: 8201657Abstract: A cam follower includes an oval rotational body which is rotationally supported on a fixed pin, and in which an outer circumferential shape thereof is an oval, a long axis of the oval is longer than a width of the cam groove, and a short axis of the oval is shorter than the width of the cam groove, the oval rotational body being biased and being rotated by a biasing spring in one direction about the fixed pin. As a consequence, when a steering wheel is in a neutral position, the outer circumferential surface of the cam follower comes into contact with both side surfaces of the cam groove in the width direction of the cam groove and gaps therebetween can be eliminated. As a result, neutral stability of the steering wheel and steering feeling during straightforward traveling are improved.Type: GrantFiled: August 6, 2009Date of Patent: June 19, 2012Assignee: JTEKT CorporationInventors: Tomonari Yamakawa, Hajime Tanaka
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Patent number: 8100222Abstract: A steering apparatus includes an input shaft that transmits a steering force input from a steering wheel and an output shaft that transmits a steered force by which wheels are steered. The output shaft is arranged at a position that is radially offset from the input shaft. One of an eccentric cam and an adapting plate that form an eccentric pin mechanism is connected to the input shaft. The output shaft is connected to the other one of the eccentric cam and the adapting plate. A first connecting portion of the input shaft, which is connected to the eccentric pin mechanism, is connectable to a second connecting portion of the output shaft, which is connected to the eccentric pin mechanism.Type: GrantFiled: December 12, 2008Date of Patent: January 24, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hajime Tanaka, Tomonari Yamakawa
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Publication number: 20110163526Abstract: A steering-force transmitting apparatus including (a) an operating-member-side shaft; (b) a turning-device-side shaft offset from the operating-member-side shaft; and (c) a rotation transmitting mechanism having (c-1) an axially protruding portion provided in one of the two shafts and (c-2) a radially extending groove provided in the other of the two shafts such that the axially protruding portion is engaged in the radially extending groove. The rotation transmitting mechanism is configured to change a rotational phase difference between the two shafts while causing one of the two shafts to be rotated by rotation of the other of the two shafts. An axially end portion of a main body portion of one of the two shafts and an axially end portion of the other of the two shafts overlap with each other in the axial direction.Type: ApplicationFiled: September 14, 2009Publication date: July 7, 2011Applicants: Toyota Jidosha Kabushiki Kaisha, Jtekt CorporationInventors: Hajime Tanaka, Tomonari Yamakawa
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Publication number: 20110079102Abstract: A steering apparatus includes a first shaft coupled to a steering wheel, a second shaft arranged to be eccentric relative to the first shaft, and a joint mechanism for coupling the first shaft and the second shaft to each other. The joint mechanism includes a cam having a cam groove that extends in a direction perpendicular to the first shaft, a cam follower that can slide in the cam groove, an eccentric pin for coupling the second shaft and the cam follower to each other at a position eccentric relative to the second shaft. An outer cylinder serving as a protective member is arranged concentrically with the eccentric pin, so as to surround the outer circumference of the eccentric pin. At least part of the eccentric pin and the outer cylinder is arranged in the cam groove.Type: ApplicationFiled: June 26, 2009Publication date: April 7, 2011Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomonari Yamakawa, Hajime Tanaka
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Publication number: 20100285889Abstract: A steering apparatus includes an input shaft that transmits a steering force input from a steering wheel and an output shaft that transmits a steered force by which wheels are steered. The output shaft is arranged at a position that is radially offset from the input shaft. One of an eccentric cam and an adapting plate that form an eccentric pin mechanism is connected to the input shaft. The output shaft is connected to the other one of the eccentric cam and the adapting plate. A first connecting portion of the input shaft, which is connected to the eccentric pin mechanism, is connectable to a second connecting portion of the output shaft, which is connected to the eccentric pin mechanism.Type: ApplicationFiled: December 12, 2008Publication date: November 11, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Tanaka, Tomonari Yamakawa
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Publication number: 20100263474Abstract: A steering apparatus includes: an input shaft that transmits a steering force input from a steering wheel; an output shaft that transmits a steered force by which wheels are steered; and an eccentric pin mechanism that includes an eccentric cam and an adapting plate. The output shaft is arranged at a position that is radially offset from the input shaft, and is connected to one of the eccentric cam and the adapting plate. The other one of the eccentric cam and the adapting plate is connected to the input shaft. A middle accommodation member that accommodates the eccentric pin mechanism is formed separately from an input-side accommodation member that accommodates the input shaft and an output-side accommodation member that accommodates the output shaft.Type: ApplicationFiled: December 11, 2008Publication date: October 21, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Tanaka, Tomonari Yamakawa
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Patent number: 7677360Abstract: A shock absorbing fabric structure is a one-piece webbing. The shock absorbing fabric structure has a tubular-shaped high strength sheath and a high elongation member inside of the sheath. The sheath and the high elongation member are secured together at spaced apart connection locations and the high elongation member is generally not secured to the sheath between the connection locations. Heat treatment shrinks the length of the high elongation member. The sheath does not substantially shrink from the heat treatment relative to the high elongation member and gathers together in an accordion-like arrangement. A tensile load applied to the fabric structure stretches the high elongation member and unfolds the gathered sheath. The high strength sheath supports the tensile load when completely unfolded while the high elongation member absorbs energy as it stretches or elongates.Type: GrantFiled: April 15, 2008Date of Patent: March 16, 2010Assignee: YKK Corporation of AmericaInventors: Hajime Tanaka, Tim Russell
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Patent number: 7665575Abstract: A shock absorbing fabric structure is a one-piece webbing. The shocking absorbing fabric structure has a sheath and an elongation member inside of the sheath. The sheath and the elongation member are secured together at spaced apart connection locations and the elongation member is generally not secured to the sheath between the connection locations. Heat treatment shrinks the length of the elongation member. The sheath does not substantially shrink from heat treatment relative to the elongation member and gathers together in an accordion-like arrangement. A tensile load applied to the fabric structure stretches the elongation member and unfolds the gathered sheath. The sheath supports the tensile load when completely unfolded while the elongation member absorbs energy as it stretches or elongates.Type: GrantFiled: June 29, 2006Date of Patent: February 23, 2010Assignee: YKK Corporation of AmericaInventors: Hajime Tanaka, Tim Russell
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Publication number: 20100032230Abstract: A cam follower (70) includes an oval rotational body (72) which is rotationally supported on a fixed pin (71), and in which an outer circumferential shape thereof is an oval, a long axis of the oval is longer than a width of the cam groove (64), and a short axis of the oval is shorter than the width of the cam groove (64), the oval rotational body (72) being biased and being rotated by a biasing spring (77) in one direction about the fixed pin (71). As a consequence, when a steering wheel (39) is in a neutral position, the outer circumferential surface of the cam follower (70) comes into contact with both side surfaces (64S) of the cam groove (64) in the width direction of the cam groove (64) and gaps therebetween can be eliminated. As a result, neutral stability of the steering wheel and steering feeling during straightforward traveling are improved.Type: ApplicationFiled: August 6, 2009Publication date: February 11, 2010Applicant: JTEKT CORPORATIONInventors: Tomonari Yamakawa, Hajime Tanaka
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Patent number: 7599052Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.Type: GrantFiled: August 13, 2008Date of Patent: October 6, 2009Assignee: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda