Patents by Inventor Hiroshi Hamada

Hiroshi Hamada 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: 20180130721
    Abstract: A stacked cooler includes flow pipes that are stacked, each of the flow pipes having a flat shape and including a medium passage in which a heat medium flows, a heat exchange object that is disposed between each adjacent two of the flow pipes and is clamped between their flat planes, a protruding pipe part that is connected to at least one of the flow pipes and protrudes in a stacking direction of the flow pipes, and a load restraining part that restrains a load applied to a connection portion of the at least one of the flow pipes to the protruding pipe part as compared with a load applied to the other portion of the at least one of the flow pipes.
    Type: Application
    Filed: January 10, 2018
    Publication date: May 10, 2018
    Inventors: Yasuhiro MIZUNO, Isao TAMADA, Tomohiro SHIMAZU, Hiroshi HAMADA, Yuusuke TAKAGI, Eiji NAKAGAWA
  • Publication number: 20180088293
    Abstract: The optical subassembly includes a photodetector including element terminal groups for light-receiving elements, and an electric signal controller including IC terminal groups, wherein any one of the element terminal group and the IC terminal group has a two-terminal configuration, and the other one has a three-terminal configuration, wherein, in a case where terminal groups at both ends where center positions thereof are disposed on the inner side together and have the two-terminal configuration, the first connection terminals are disposed on the outer side than a second connection terminals in the two-terminal configuration, and in a case where terminal groups at both ends where center positions thereof are on the outer side together and have the two-terminal configuration, a first connection terminal in the two-terminal configuration is disposed on the inner side than the second connection terminal.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Inventors: Takashi TOYONAKA, Hiroshi HAMADA
  • Publication number: 20180062277
    Abstract: A wire with terminal includes a wire in which a core is covered with a coating, and a terminal 20 including a wire barrel 24 to be crimped to the core exposed from the coating of the wire and an insulation barrel 26 to be crimped to the coating of the wire. The wire is pulled rearwardly from the terminal. Recesses 26B are provided on a surface of the insulation barrel 26 to be crimped and openings of the recesses 26B are shaped to become narrower toward a rear side. As the wire is pulled more rearwardly, the coating penetrating into the recesses 26B moves rearwardly of the recesses 26B to be compressed and hardened and becomes less likely to come out of the recesses 26B. Thus, impact strength can be enhanced.
    Type: Application
    Filed: February 16, 2016
    Publication date: March 1, 2018
    Inventors: Hiroshi Hamada, Satoshi Morikawa, Takehiro Nakata, Takuji Otsuka, Takanobu Shimada
  • Publication number: 20180062276
    Abstract: A female terminal 30 is connected to an end of a wire 20 in which a core 21 is covered with an insulation coating 22, and the wire 20 being pulled out rearward therefrom. The female terminal 30 includes two coating crimping pieces 39 that extend in a lateral direction intersecting a pull-out direction of the wire 20 and are crimped to an outer peripheral surface of the insulation coating 22. Compressing portions 41 are formed at a front end edge of each coating crimping piece 39 on the side of the insulation coating 22. The compressing portions 41 open forward and are formed by recessing the coating crimping piece 39 so that an internal space is narrowed toward a rear side from a front end edge of the coating crimping piece 39.
    Type: Application
    Filed: February 18, 2016
    Publication date: March 1, 2018
    Inventors: Hiroshi Hamada, Takanobu Shimada
  • Publication number: 20180034167
    Abstract: A terminal 20 disclosed by this specification is crimped to a wire 30, in which a core 31 is covered with an insulation coating 32, with the wire 30 pulled out rearward, and includes a core crimping portion 40 to be crimped to the core 31 and a coating crimping portion 50 to be crimped to the insulation coating 32. The coating crimping portion 50 in a state crimped to the insulation coating 32 includes flat portions 55 extending flat in a pull-out direction of the wire 30 and a projection 52 projecting more toward the core 31 than the flat portions 55 and having a projecting amount increased toward a rear side.
    Type: Application
    Filed: February 16, 2016
    Publication date: February 1, 2018
    Inventor: Hiroshi Hamada
  • Publication number: 20180020293
    Abstract: An electroacoustic transducer that can improve acoustic characteristics has a housing and a piezoelectric speaker. The piezoelectric speaker has a first vibration plate with a periphery part supported directly or indirectly on the housing, as well as a piezoelectric element placed at least on one side of the first vibration plate, and is constituted in such a way that its rigidity is asymmetric with respect to the center axis of the first vibration plate.
    Type: Application
    Filed: July 5, 2017
    Publication date: January 18, 2018
    Inventors: Shigeo ISHII, Takashi TOMITA, Hiroshi HAMADA, Yutaka DOSHIDA
  • Publication number: 20170356430
    Abstract: A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 14, 2017
    Inventors: Kazuhiro IRIE, Masaaki TONEGAWA, Hiroshi HAMADA
  • Patent number: 9838799
    Abstract: In an embodiment, an electroacoustic converter has an enclosure, piezoelectric sounding body, electromagnetic sounding body, passage, and wiring members. The piezoelectric sounding body includes a first vibration plate supported directly or indirectly on the enclosure, and a piezoelectric element placed at least on one side of the first vibration plate. The piezoelectric sounding body divides the interior of the enclosure into a first space and a second space. The electromagnetic sounding body has a second vibration plate and is placed in the first space. The passage is provided at the piezoelectric sounding body or around the piezoelectric sounding body, to connect the first space and second space. The wiring members are electrically connected to the piezoelectric element and led out toward the electromagnetic sounding body, from the piezoelectric element, through the first space or second space.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: December 5, 2017
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Yutaka Doshida, Yukihiro Matsui, Hiroshi Hamada
  • Publication number: 20170311086
    Abstract: In an embodiment, an electronic device 1 has a panel 20, a housing 10 that holds the panel 20, and a piezoelectric element 30 installed on the rear side of the panel 20, wherein the piezoelectric element 30 is installed at a position that allows for the vibration amplitude of the panel 20 to become the highest on the side closer to the center of the panel 20 in the longitudinal direction from the installed position of the piezoelectric element 30. The electronic device is capable of causing an entire panel to vibrate in a stable manner.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 26, 2017
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo ISHII, Yukihiro MATSUI, Hiroshi HAMADA, Keiichi KOBAYASHI
  • Publication number: 20170309658
    Abstract: Provided is aback illuminated photo detector enabling easy determination of whether or not the radius of a beam spot on a light absorption layer is an appropriate size. The back illuminated photo detector includes: a semiconductor substrate having a first surface for receiving light; a semiconductor layer that is laminated on a second surface and includes a light absorption layer; a passivation film so as to expose a contact portion that is part of an upper surface of the semiconductor layer; and an electrode that is in contact with the semiconductor layer in the contact portion, and has a reflectance lower than that of the passivation film. The contact portion includes a center portion located on an optical axis, and an area of the center portion is smaller than a design cross-sectional area of a beam spot.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 26, 2017
    Inventors: Hiroshi HAMADA, Takashi TOYONAKA
  • Patent number: 9756427
    Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. A passage 35 is provided in or around the piezoelectric sounding body 32, to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: September 5, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yutaka Doshida, Yukihiro Matsui, Hiroshi Hamada
  • Publication number: 20170222118
    Abstract: An electroacoustic transducer includes: a polygonal-shaped laminated piezoelectric element including alternately stacked piezoelectric layers and electrode layers, with the piezoelectric layers placed between at least one pair of electrode layers having different polarities; and a circular vibration plate on which the laminated piezoelectric element is placed. Of the piezoelectric layers sandwiched between the at least one pair of electrode layers, the total volume (V) of those effective layers that overlap the at least one pair of electrode layers as viewed from the stacking direction satisfies the condition below: 0.2?R2×ts?V?2.0?R2×ts wherein ? represents the ratio of the circumference of a circle to its diameter, R represents the radius of the vibration plate, and ts represents the thickness of the vibration plate.
    Type: Application
    Filed: August 31, 2015
    Publication date: August 3, 2017
    Inventors: Takashi TOMITA, Shigeo ISHII, Hiroshi HAMADA, Yutaka DOSHIDA
  • Patent number: 9714841
    Abstract: A satellite and/or dead-reckoning navigation integrated positioning device with improved accuracy including position, velocity, etc. is disclosed. A tracking processing module performs, based on a GPS signal, acquisition and tracking thereof and demodulation of a navigation message. A GPS calculation module calculates position, velocity, and the like based on pseudo-range and Doppler frequency observations, and ephemeris data and gives the calculations to output judgment and tracking processing modules. Based on external support information including inertial sensor output, map information or information about differences between map position and measured position, along with the pseudo-range and Doppler observations, an integrated positioning calculation module estimates position, velocity, and the like, and gives the estimates to the output judgment module.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: July 25, 2017
    Assignee: FURUNO ELECTRIC COMPANY LIMITED
    Inventors: Hiroyuki Toda, Masaki Suyama, Hiroshi Hamada, Mika Tanaka (Ninomiya), Kunihiko Hashimoto
  • Patent number: 9686615
    Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a first vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 has a second vibration plate and divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. The passage 35 is provided in or around the piezoelectric sounding body 32 to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: June 20, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yutaka Doshida, Yukihiro Matsui, Hiroshi Hamada
  • Patent number: 9601859
    Abstract: A terminal fitting (20) has a main body (30) with a bottom wall (31), first and second facing walls (32, 33) extending from opposite sides of the bottom wall (31), an inner ceiling wall (34) extending from an extending end (33A) of the first facing wall (33) toward the second facing wall (32) and an outer ceiling wall (35) extending from an extending end (32A) of the second facing wall (33) toward the second facing wall (33) along an outer surface (34A) of the inner ceiling wall (34). A stabilizer (36) is formed by folding a projecting piece (37) standing up from the outer ceiling wall (35) toward the extending end (33A) of the first facing wall (33). A tip (37D) of the projecting piece (37) can contact the first facing wall (33) and the inner ceiling wall (34) in a recess (38) formed on a corner therebetween.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: March 21, 2017
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Takashi Nagasaki, Shohei Nagasaki, Hiroshi Hamada
  • Publication number: 20160268718
    Abstract: A terminal fitting (20) has a main body (30) with a bottom wall (31), first and second facing walls (32, 33) extending from opposite sides of the bottom wall (31), an inner ceiling wall (34) extending from an extending end (33A) of the first facing wall (33) toward the second facing wall (32) and an outer ceiling wall (35) extending from an extending end (32A) of the second facing wall (33) toward the second facing wall (33) along an outer surface (34A) of the inner ceiling wall (34). A stabilizer (36) is formed by folding a projecting piece (37) standing up from the outer ceiling wall (35) toward the extending end (33A) of the first facing wall (33). A tip (37D) of the projecting piece (37) can contact the first facing wall (33) and the inner ceiling wall (34) in a recess (38) formed on a corner therebetween.
    Type: Application
    Filed: November 6, 2014
    Publication date: September 15, 2016
    Inventors: Takashi Nagasaki, Shohei Nagasaki, Hiroshi Hamada
  • Publication number: 20160240698
    Abstract: Provided are a semiconductor light receiving device, an optical receiver module, and a manufacturing method thereof in which characteristics of the device are improved when the device has a structure in which a mesa structure including layers formed of a common material is buried by a buried layer. The semiconductor light receiving device includes the mesa structure including the layers formed of a commonmaterial, the layers including an absorbing layer, the mesa structure being buried by the buried layer formed so as to surround side surfaces of the mesa structure. The mesa structure has a cross section having a forwardly tapered portion and a reversely tapered portion.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 18, 2016
    Inventors: Masahiro EBISU, Hiroshi HAMADA, Yasushi SAKUMA, Shigenori HAYAKAWA
  • Publication number: 20160211193
    Abstract: A stacked cooler includes flow pipes that are stacked, each of the flow pipes having a flat shape and including a medium passage in which a heat medium flows, a heat exchange object that is disposed between each adjacent two of the flow pipes and is clamped between their flat planes, a protruding pipe part that is connected to at least one of the flow pipes and protrudes in a stacking direction of the flow pipes, and a load restraining part that restrains a load applied to a connection portion of the at least one of the flow pipes to the protruding pipe part as compared with a load applied to the other portion of the at least one of the flow pipes.
    Type: Application
    Filed: August 28, 2014
    Publication date: July 21, 2016
    Inventors: Yasuhiro MIZUNO, Isao TAMADA, Tomohiro SHIMAZU, Hiroshi HAMADA, Yuusuke TAKAGI, Eiji NAKAGAWA
  • Publication number: 20160183006
    Abstract: A piezoelectric speaker has a piezoelectric element and vibration plate. The piezoelectric element has a base body with a mounting surface, as well as first and second terminals that are formed on the mounting surface with a distance between them. The vibration plate has a conductive body joined to the piezoelectric element and having a principle surface facing the mounting surface, as well as a first hole with or without a bottom which is formed on the principle surface in a region facing the first terminal to form a space between the body and first terminal. The piezoelectric speaker is capable of preventing the external electrodes of the piezoelectric element from shorting to each other.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 23, 2016
    Inventors: Yasukazu TOKUHISA, Takashi TOMITA, Hiroshi HAMADA, Shigeo ISHII, Yutaka DOSHIDA, Yoshiyuki WATANABE
  • Publication number: 20160119720
    Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a first vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 has a second vibration plate and divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. The passage 35 is provided in or around the piezoelectric sounding body 32 to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.
    Type: Application
    Filed: September 2, 2015
    Publication date: April 28, 2016
    Inventors: Yutaka DOSHIDA, Yukihiro MATSUI, Hiroshi HAMADA