Patents by Inventor Yutaro Yoshida

Yutaro Yoshida 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: 20240088746
    Abstract: A case 31 has a total of first to sixth flat parts 32A to 32F arranged in a circumferential direction of the case 31 and a total of first to sixth arced parts 32a to 32f connecting adjacent flat parts with each other. When viewed in an axial direction of a shaft 44, inner circumferential surfaces CF of the first to sixth arced parts 32a to 32f are each formed in an arced shape having a radius R1 and a center AC of the case 31 as the center. In addition, since the stator 35 is only supported by the inner circumferential surfaces CF (six in total), the press-fit load of the stator 35 with respect to the case 31 can be reduced, and it is possible to increase the assembling accuracy.
    Type: Application
    Filed: August 14, 2023
    Publication date: March 14, 2024
    Applicant: MITSUBA Corporation
    Inventors: YASUSHI YOSHIDA, YUTARO JO
  • Patent number: 11841630
    Abstract: A fixing member includes a substrate having an endless shape; and an elastic layer on an outer peripheral surface of the substrate, the elastic layer containing a silicone rubber and fillers dispersed in the silicone rubber, a content of the fillers with respect to the elastic layer being 35 vol % or more and 50 vol % or less. The fillers includes at least a first filler and a second filler. The first filler is at least one selected from the group consisting of: magnesium oxide; and zinc oxide. The second filler is at least one selected from the group consisting of metal silicon and silicon carbide. A proportion of a sum of the first filler and the second filler to a total amount of the fillers in the elastic layer is 90 vol % or more. Further, the average of 6 sets of representative coefficient A is 1.4 or more.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: December 12, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Kitano, Matsutaka Maeda, Makoto Souma, Yutaro Yoshida, Yasuhiro Miyahara, Shigeo Kuroda
  • Patent number: 11829102
    Abstract: Toner classification apparatus comprising classification rotor comprising a plurality of vanes extending from rotation center side of classification rotor to outer circumference side of classification rotor; the plurality of vanes are disposed with prescribed gaps established between vanes; gaps form opening facing rotation center region of classification rotor; each of vanes is disposed such that portion of vane away from of center of rotation of classification rotor is located on more upstream side in a direction of rotation of classification rotor than portion of vane closer to center of rotation of classification rotor; each of vanes has elbow; and in a horizontal cross section provided by sectioning classification rotor in a rotational axis perpendicular direction of classification rotor, shape of vane satisfies prescribed formulae, as well as toner production method comprising classification step of carrying out classification process on particles to be classified by using toner classification apparatus
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Yamashita, Yuichi Mizo, Junichi Tamura, Ran Wakayama, Yutaro Yoshida
  • Publication number: 20230341800
    Abstract: An electrophotographic member having an endless shape comprises: a substrate; and an elastic layer on an outer peripheral surface thereof. The elastic layer contains a silicone rubber and metal silicon fillers dispersed in the silicone rubber. An average of area ratios of the metal silicon fillers in respective first binarized images is 42% or less, and an average of area ratios of the metal silicon fillers in respective second binarized images is 42% or less. The elastic layer has ? of 1.30 W/(m·K) or more, where ? is a thermal conductivity of the elastic layer in a thickness direction thereof, and the elastic layer has pV of 9.0 LOG?·cm or more, where pV is a common logarithm value of a volume resistivity thereof.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 26, 2023
    Inventors: YASUHIRO MIYAHARA, SHIGEO KURODA, MATSUTAKA MAEDA, YUJI KITANO, MAKOTO SOUMA, YUTARO YOSHIDA
  • Patent number: 11799233
    Abstract: A housing 20 includes a plurality of engaging portions 27 arranged at positions point-symmetrical in a back view on a peripheral edge part of a rear surface and protrusions 22 arranged to project rearward from the rear surface. A cover 70 includes engaged portions 81 to 85 to be engaged with and held by the engaging portions 27, a space portion 77 in which the protrusions 22 are located with the cover 70 properly assembled with the housing 20, and an interfering portion for interfering with the protrusions 22 when the cover 70 is in a posture opposite to the proper one with respect to the housing 20.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: October 24, 2023
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Yutaro Yoshida
  • Publication number: 20230205123
    Abstract: A fixing member includes a substrate having an endless shape; and an elastic layer on an outer peripheral surface of the substrate, the elastic layer containing a silicone rubber and fillers dispersed in the silicone rubber, a content of the fillers with respect to the elastic layer being 35 vol % or more and 50 vol % or less. The fillers includes at least a first filler and a second filler. The first filler is at least one selected from the group consisting of: magnesium oxide; and zinc oxide. The second filler is at least one selected from the group consisting of metal silicon and silicon carbide. A proportion of a sum of the first filler and the second filler to a total amount of the fillers in the elastic layer is 90 vol % or more. Further, the average of 6 sets of representative coefficient A is 1.4 or more.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 29, 2023
    Inventors: YUJI KITANO, MATSUTAKA MAEDA, MAKOTO SOUMA, YUTARO YOSHIDA, YASUHIRO MIYAHARA, SHIGEO KURODA
  • Publication number: 20230195015
    Abstract: A fixing member including: a substrate; and an elastic layer arranged on the substrate, wherein the elastic layer contains a silicone rubber and metal silicon powder dispersed in the silicone rubber, wherein the elastic layer has an elastic modulus of 0.10 MPa or more and 0.40 MPa or less, and wherein the metal silicon powder has an aspect ratio of 1.4 or more and 2.5 or less, and a repose angle of 35° or more and 52° or less.
    Type: Application
    Filed: February 10, 2023
    Publication date: June 22, 2023
    Inventors: YUJI KITANO, MATSUTAKA MAEDA, MAKOTO SOUMA, YASUHIRO MIYAHARA, YUTARO YOSHIDA, SHIGEO KURODA
  • Patent number: 11573515
    Abstract: A fixing member for electrophotography having an endless shape has a base layer having an endless shape, and an elastic layer on the outer circumferential surface of the base layer. The elastic layer includes a silicone rubber and a filler dispersed in the silicone rubber. The total amount of the filler compounded in the elastic layer is 30 vol % or less based on the total volume of the elastic layer. The elastic layer satisfies the relation of ?td>?md>?nd. ?td is a thermal conductivity of the elastic layer in the circumferential direction, ?nd is a thermal conductivity of the elastic layer in the thickness direction, and ?md, is a thermal conductivity of the elastic layer in the longitudinal direction. ?td is 2.0 W/(m·K) or more, and ?nd is 1.3 W/(m·K) or more.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: February 7, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Miyahara, Matsutaka Maeda, Yuji Kitano, Makoto Souma, Yutaro Yoshida, Shigeo Kuroda
  • Publication number: 20220334522
    Abstract: A fixing member for electrophotography having an endless shape has a base layer having an endless shape, and an elastic layer on the outer circumferential surface of the base layer. The elastic layer includes a silicone rubber and a filler dispersed in the silicone rubber. The total amount of the filler compounded in the elastic layer is 30 vol % or less based on the total volume of the elastic layer. The elastic layer satisfies the relation of ?td>?md>?nd. ?td is a thermal conductivity of the elastic layer in the circumferential direction, ?nd is a thermal conductivity of the elastic layer in the thickness direction, and ?md, is a thermal conductivity of the elastic layer in the longitudinal direction. ?td is 2.0 W/(m·K) or more, and ?nd is 1.3 W/(m·K) or more.
    Type: Application
    Filed: April 11, 2022
    Publication date: October 20, 2022
    Inventors: Yasuhiro Miyahara, Matsutaka Maeda, Yuji Kitano, Makoto Souma, Yutaro Yoshida, Shigeo Kuroda
  • Publication number: 20220102905
    Abstract: A housing 20 includes a plurality of engaging portions 27 arranged at positions point-symmetrical in a back view on a peripheral edge part of a rear surface and protrusions 22 arranged to project rearward from the rear surface. A cover 70 includes engaged portions 81 to 85 to be engaged with and held by the engaging portions 27, a space portion 77 in which the protrusions 22 are located with the cover 70 properly assembled with the housing 20, and an interfering portion for interfering with the protrusions 22 when the cover 70 is in a posture opposite to the proper one with respect to the housing 20.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 31, 2022
    Inventor: Yutaro YOSHIDA
  • Publication number: 20210397104
    Abstract: Toner classification apparatus comprising classification rotor comprising a plurality of vanes extending from rotation center side of classification rotor to outer circumference side of classification rotor; the plurality of vanes are disposed with prescribed gaps established between vanes; gaps form opening facing rotation center region of classification rotor; each of vanes is disposed such that portion of vane away from of center of rotation of classification rotor is located on more upstream side in a direction of rotation of classification rotor than portion of vane closer to center of rotation of classification rotor; each of vanes has elbow; and in a horizontal cross section provided by sectioning classification rotor in a rotational axis perpendicular direction of classification rotor, shape of vane satisfies prescribed formulae, as well as toner production method comprising classification step of carrying out classification process on particles to be classified by using toner classification apparatus
    Type: Application
    Filed: June 10, 2021
    Publication date: December 23, 2021
    Inventors: Daisuke YAMASHITA, Yuichi MIZO, Junichi TAMURA, Ran WAKAYAMA, Yutaro YOSHIDA
  • Patent number: 11189963
    Abstract: A connector (female connector 1) is provided with an inner housing 20 from which wires W are pulled out to outside and which is connected to a mating housing 90, and a vibration transmitting member 30, 40 including a mating contact portion (inner peripheral surface 31A) capable of coming into contact with the mating housing 90. The vibration transmitting member 30, 40 includes a wire fixing portion 43 to which the wires W are fixed, and is capable of transmitting vibration from the wire fixing portion 43 to the mating housing 90 from the mating contact portion 31A. The inner housing 20 is allowed to relatively move with respect to the vibration transmitting member 30, 40.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: November 30, 2021
    Inventors: Naomichi Kawashima, Tomohiko Kobayashi, Yutaro Yoshida, Masatoshi Ito, Hirokazu Komori
  • Patent number: 11139607
    Abstract: A connector (1) is provided with an inner housing (20) to be fit to an inner periphery of a mating housing (M) and an outer housing (30) fittable to an outer periphery of the mating housing (M). The outer housing (30) is held on the inner housing (20) by first locks (50) before connection to the mating housing (M), is held connected to the mating housing (M) by a second lock (60) at the time of connection to the mating housing M, and is separated from the inner housing (20) and held connected to the mating housing (M) by releasing the first locks (50) at the time of separation from the mating housing (M).
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: October 5, 2021
    Inventors: Naomichi Kawashima, Tomohiko Kobayashi, Yutaro Yoshida, Masatoshi Ito
  • Patent number: 11088493
    Abstract: A lever-type connector (1) is provided with a connector housing (10) including a wire holding portion (11). Wires W have end parts held in the wire holding portion (11) and extend from the connector housing (10). A lever (20) is assembled with the connector housing (10) and is rotatable from a connection start position to a connection end position. A cover (50) covers the wires W extending from the connector housing (10) by being assembled with the connector housing (10). The cover 50 includes positioning portions (55A), and the lever (20) includes positioning receiving portions for positioning the cover (50) at a proper mounting position by contacting the positioning portions (55A) when the lever (20) is at the connection end position.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 10, 2021
    Inventor: Yutaro Yoshida
  • Publication number: 20210175661
    Abstract: A connector (female connector 1) is provided with an inner housing 20 from which wires W are pulled out to outside and which is connected to a mating housing 90, and a vibration transmitting member 30, 40 including a mating contact portion (inner peripheral surface 31A) capable of coming into contact with the mating housing 90. The vibration transmitting member 30, 40 includes a wire fixing portion 43 to which the wires W are fixed, and is capable of transmitting vibration from the wire fixing portion 43 to the mating housing 90 from the mating contact portion 31A. The inner housing 20 is allowed to relatively move with respect to the vibration transmitting member 30, 40.
    Type: Application
    Filed: November 6, 2018
    Publication date: June 10, 2021
    Inventors: Naomichi Kawashima, Tomohiko Kobayashi, Yutaro Yoshida, Masatoshi Ito, Hirokazu Komori
  • Publication number: 20200313351
    Abstract: A lever-type connector (1) is provided with a connector housing (10) including a wire holding portion (11). Wires W have end parts held in the wire holding portion (11) and extend from the connector housing (10). A lever (20) is assembled with the connector housing (10) and is rotatable from a connection start position to a connection end position. A cover (50) covers the wires W extending from the connector housing (10) by being assembled with the connector housing (10). The cover 50 includes positioning portions (55A), and the lever (20) includes positioning receiving portions for positioning the cover (50) at a proper mounting position by contacting the positioning portions (55A) when the lever (20) is at the connection end position.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Inventor: Yutaro Yoshida
  • Publication number: 20200274285
    Abstract: A connector (1) is provided with an inner housing (20) to be fit to an inner periphery of a mating housing (M) and an outer housing (30) fittable to an outer periphery of the mating housing (M). The outer housing (30) is held on the inner housing (20) by first locks (50) before connection to the mating housing (M), is held connected to the mating housing (M) by a second lock (60) at the time of connection to the mating housing M, and is separated from the inner housing (20) and held connected to the mating housing (M) by releasing the first locks (50) at the time of separation from the mating housing (M).
    Type: Application
    Filed: November 6, 2018
    Publication date: August 27, 2020
    Inventors: Naomichi Kawashima, Tomohiko Kobayashi, Yutaro Yoshida, Masatoshi Ito
  • Patent number: 9917395
    Abstract: A lever-type connector 10 disclosed by this specification includes a housing (20), a lever (40), a cover (50) and a lever lock portion (23) provided to extend backward from a rear end (22) of the housing (20) and hold the lever (40) at a rear position by locking an operating portion (42). The cover (50) is composed of an upper cover (52) and a lower cover (51) to be assembled below the upper cover (52). The upper cover (52) includes an upper locking portion (56) configured to cover an upper lock receiving portion (24) provided on the rear end (22) of the housing (20) from above and lock the upper lock receiving portion (24) from front and the lever lock portion (23) is arranged along an upper surface of the upper cover (52).
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: March 13, 2018
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Yutaro Yoshida
  • Publication number: 20170229805
    Abstract: A lever-type connector 10 disclosed by this specification includes a housing (20), a lever (40), a cover (50) and a lever lock portion (23) provided to extend backward from a rear end (22) of the housing (20) and hold the lever (40) at a rear position by locking an operating portion (42). The cover (50) is composed of an upper cover (52) and a lower cover (51) to be assembled below the upper cover (52). The upper cover (52) includes an upper locking portion (56) configured to cover an upper lock receiving portion (24) provided on the rear end (22) of the housing (20) from above and lock the upper lock receiving portion (24) from front and the lever lock portion (23) is arranged along an upper surface of the upper cover (52).
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventor: Yutaro Yoshida