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).

  • Publication number: 20190250225
    Abstract: 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: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Masaki TANJI, Hajime TANAKA, Hiroaki MURAKOSHI
  • Patent number: 10232299
    Abstract: 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: Grant
    Filed: September 8, 2015
    Date of Patent: March 19, 2019
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshitaka Ito, Hajime Tanaka
  • Publication number: 20180373114
    Abstract: 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: Application
    Filed: June 25, 2018
    Publication date: December 27, 2018
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Hajime TANAKA
  • Publication number: 20170282164
    Abstract: 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: Application
    Filed: March 21, 2017
    Publication date: October 5, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Hajime TANAKA, Tomokatsu AOYAMA
  • Publication number: 20160074800
    Abstract: 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: Application
    Filed: September 8, 2015
    Publication date: March 17, 2016
    Inventors: Yoshitaka ITO, Hajime TANAKA
  • Publication number: 20150209816
    Abstract: 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: Application
    Filed: September 9, 2013
    Publication date: July 30, 2015
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hajime Tanaka, Munenori Soejima
  • Patent number: 8875835
    Abstract: 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: Grant
    Filed: February 8, 2012
    Date of Patent: November 4, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoichi Fujinori, Hiromitsu Kageyama, Hajime Tanaka, Kenji Hayashi, Koichi Nishimura, Kenjiro Nagata, Naoki Yamaguchi, Akiya Taneda
  • Patent number: 8382159
    Abstract: 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: Grant
    Filed: September 14, 2009
    Date of Patent: February 26, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, JTEKT Corporation
    Inventors: Hajime Tanaka, Tomonari Yamakawa
  • Patent number: 8266980
    Abstract: 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: Grant
    Filed: June 26, 2009
    Date of Patent: September 18, 2012
    Assignees: Jtekt Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomonari Yamakawa, Hajime Tanaka
  • Publication number: 20120199413
    Abstract: 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: Application
    Filed: February 8, 2012
    Publication date: August 9, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoichi FUJINORI, Hiromitsu KAGEYAMA, Hajime TANAKA, Kenji HAYASHI, Koichi NISHIMURA, Kenjiro NAGATA, Naoki YAMAGUCHI, Akiya TANEDA
  • Patent number: 8201657
    Abstract: 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: Grant
    Filed: August 6, 2009
    Date of Patent: June 19, 2012
    Assignee: JTEKT Corporation
    Inventors: Tomonari Yamakawa, Hajime Tanaka
  • Patent number: 8100222
    Abstract: 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: Grant
    Filed: December 12, 2008
    Date of Patent: January 24, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hajime Tanaka, Tomonari Yamakawa
  • Publication number: 20110163526
    Abstract: 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: Application
    Filed: September 14, 2009
    Publication date: July 7, 2011
    Applicants: Toyota Jidosha Kabushiki Kaisha, Jtekt Corporation
    Inventors: Hajime Tanaka, Tomonari Yamakawa
  • Publication number: 20110079102
    Abstract: 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: Application
    Filed: June 26, 2009
    Publication date: April 7, 2011
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomonari Yamakawa, Hajime Tanaka
  • Publication number: 20100285889
    Abstract: 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: Application
    Filed: December 12, 2008
    Publication date: November 11, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hajime Tanaka, Tomonari Yamakawa
  • Publication number: 20100263474
    Abstract: 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: Application
    Filed: December 11, 2008
    Publication date: October 21, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hajime Tanaka, Tomonari Yamakawa
  • Patent number: 7677360
    Abstract: 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: Grant
    Filed: April 15, 2008
    Date of Patent: March 16, 2010
    Assignee: YKK Corporation of America
    Inventors: Hajime Tanaka, Tim Russell
  • Patent number: 7665575
    Abstract: 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: Grant
    Filed: June 29, 2006
    Date of Patent: February 23, 2010
    Assignee: YKK Corporation of America
    Inventors: Hajime Tanaka, Tim Russell
  • Publication number: 20100032230
    Abstract: 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: Application
    Filed: August 6, 2009
    Publication date: February 11, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Tomonari Yamakawa, Hajime Tanaka
  • Patent number: 7599052
    Abstract: 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: Grant
    Filed: August 13, 2008
    Date of Patent: October 6, 2009
    Assignee: NKK Corporation
    Inventors: 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