Patents by Inventor Hiroyuki Umeda

Hiroyuki Umeda 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: 20170329213
    Abstract: A polarization conversion element which is capable of improving the use efficiency of light, and capable of suppressing deterioration is provided. A polarization conversion element includes a main body provided with a light-transmitting member, a polarized light separation layer that transmits first polarized light of light to be incident, and reflects second polarized light, a reflection layer, disposed between the polarized light separation layer and the light-transmitting member, and a retardation layer, disposed on a light emitting end surface of the light-transmitting member, which converts one polarization direction of the first polarized light and the second polarized light into the other polarization direction; and a reflection suppression layer that suppresses reflection from a light emitting surface in the main body, wherein the main body includes an exposure region for exposing at least a portion of a region of a light emitting-side surface in the retardation layer.
    Type: Application
    Filed: September 17, 2015
    Publication date: November 16, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomohiro TAKAGI, Joji NISHIMURA, Masashi KATO, Shuho KOBAYASHI, Yuichiro INADA, Hiroyuki UMEDA
  • Patent number: 8201763
    Abstract: A mobile crushing system is for crushing inputted objects and dropping the crushed objects directly into an ore path. The mobile crushing system includes a crusher vehicle on which a crushing device for crushing the objects is mounted and which includes carriers, and a feeder vehicle on which a transfer device for transferring the objects to the crushing device and which includes carriers. The crusher vehicle and the feeder vehicle travel independently and include a crusher-side connecting portion and a feeder-side connecting portion that are connected to each other. During crushing operation, the ore path is interposed between the crusher vehicle and the feeder vehicle in the front-rear direction.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: June 19, 2012
    Assignee: Komatsu Ltd
    Inventors: Mitsunobu Yamada, Toshimasa Kanda, Hiroyuki Umeda, Koya Iizuka, Masaru Nakamura, Masaaki Uetake
  • Publication number: 20100116919
    Abstract: A mobile crushing system is for crushing inputted objects and dropping the crushed objects directly into an ore path. The mobile crushing system includes a crusher vehicle on which a crushing device for crushing the objects is mounted and which includes carriers, and a feeder vehicle on which a transfer device for transferring the objects to the crushing device and which includes carriers. The crusher vehicle and the feeder vehicle travel independently and include a crusher-side connecting portion and a feeder-side connecting portion that are connected to each other. During crushing operation, the ore path is interposed between the crusher vehicle and the feeder vehicle in the front-rear direction.
    Type: Application
    Filed: April 11, 2008
    Publication date: May 13, 2010
    Inventors: Mitsunobu Yamada, Toshimasa Kanda, Hiroyuki Umeda, Koya Iizuka, Masaru Nakamura, Masaaki Uetake
  • Patent number: 7648091
    Abstract: A movable wood crushing machine according to the present invention comprises a vehicle body 2 with a travel device provided therein; a rotary crushing device 6 provided at an edge of this vehicle body in the traveling direction for crushing the wood into wood chips; a tab-type feeder 7 provided on this rotary crushing device with an charging opening for charging wood to be crushed formed in an upper section thereof; a conveyer 4 extending from a position under the rotary crushing device 6 in the traveling direction of the vehicle body toward the other edge section of the vehicle body in the traveling direction for transferring and discharging wood chips crushed by the rotary crushing device 6 to the outside; and a drive unit 5 provided between the rotary crushing device 6 and the conveyer 4 for driving drive sources for the travel device 3, the rotary crushing device 6, the tab-type feeder 7, and the conveyer 4.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: January 19, 2010
    Assignee: Komatsu Ltd.
    Inventors: Hiroyuki Umeda, Noriyuki Yoshida
  • Patent number: 7523879
    Abstract: A rotary crushing apparatus having a hydraulic motor for driving a crusher includes a load detector for detecting a loading state of the hydraulic motor, a load judging device for judging the loading state of the hydraulic motor, a feeding amount controller that stops a feeding of an object to be crushed by a feeder when the load judging device judges as overloaded or that starts the feeding of the object to be crushed by the feeder when the load judging device judges as underloaded, and a motor capacity controller that changes a capacity of a capacity-variable motor to a large capacity when the load judging device judges as overloaded. Since the capacity of the hydraulic motor is switched to the large capacity when the feeder is stopped, it is possible to crush wood in the crusher with high torque and to reduce the load in order to recover to a former state in a short time.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: April 28, 2009
    Assignee: Komatsu Ltd.
    Inventors: Hiroyuki Umeda, Gosuke Nakashima, Noriyuki Yoshida
  • Patent number: 7234655
    Abstract: A travel control device of a self-propelled recycle machine includes: a mode selection means 25 adapted to select a work mode and a travel mode; a travel operation means for operating a drive of a base carrier, and a controller for controlling drives of the base carrier and a crusher or a soil improvement machine, the controller including: a mode judging means 611 for judging a mode selected by the mode selection means; a travel operation signal detecting means 613 for detecting a travel operation signal from the travel operation means; and a work mode control means 614 for controlling the drive of the base carrier, when it is judged that the work mode is selected and when the travel operation signal is detected, based on the travel operation signal while driving the crusher or the soil improvement machine.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: June 26, 2007
    Assignee: Komatsu Ltd.
    Inventors: Hiroyuki Umeda, Noriyuki Yoshida
  • Publication number: 20070131807
    Abstract: A rotary crushing apparatus having a hydraulic motor for driving a crusher includes a load detector for detecting a loading state of the hydraulic motor, a load judging device for judging the loading state of the hydraulic motor, a feeding amount controller that stops a feeding of an object to be crushed by a feeder when the load judging device judges as overloaded or that starts the feeding of the object to be crushed by the feeder when the load judging device judges as underloaded, and a motor capacity controller that changes a capacity of a capacity-variable motor to a large capacity when the load judging device judges as overloaded. Since the capacity of the hydraulic motor is switched to the large capacity when the feeder is stopped, it is possible to crush wood in the crusher with high torque and to reduce the load in order to recover to a former state in a short time.
    Type: Application
    Filed: October 29, 2004
    Publication date: June 14, 2007
    Inventors: Hiroyuki Umeda, Gosuke Nakashima, Noriyuki Yoshida
  • Publication number: 20060144974
    Abstract: A travel control device of a self-propelled recycle machine includes: a mode selection means 25 adapted to select a work mode and a travel mode; a travel operation means for operating a drive of a base carrier, and a controller for controlling drives of the base carrier and a crusher or a soil improvement machine, the controller including: a mode judging means 611 for judging a mode selected by the mode selection means; a travel operation signal detecting means 613 for detecting a travel operation signal from the travel operation means; and a work mode control means 614 for controlling the drive of the base carrier, when it is judged that the work mode is selected and when the travel operation signal is detected, based on the travel operation signal while driving the crusher or the soil improvement machine.
    Type: Application
    Filed: October 21, 2004
    Publication date: July 6, 2006
    Inventors: Hiroyuki Umeda, Noriyuki Yoshida
  • Publication number: 20060113412
    Abstract: A movable wood crushing machine according to the present invention comprises a vehicle body 2 with a travel device provided therein; a rotary crushing device 6 provided at an edge of this vehicle body in the traveling direction for crushing the wood into wood chips; a tab-type feeder 7 provided on this rotary crushing device with an charging opening for charging wood to be crushed formed in an upper section thereof; a conveyer 4 extending from a position under the rotary crushing device 6 in the traveling direction of the vehicle body toward the other edge section of the vehicle body in the traveling direction for transferring and discharging wood chips crushed by the rotary crushing device 6 to the outside; and a drive unit 5 provided between the rotary crushing device 6 and the conveyer 4 for driving drive sources for the travel device 3, the rotary crushing device 6, the tab-type feeder 7, and the conveyer 4.
    Type: Application
    Filed: September 16, 2004
    Publication date: June 1, 2006
    Applicant: Komatsu LTD.
    Inventors: Hiroyuki Umeda, Noriyuki Yoshida
  • Patent number: 7009858
    Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: March 7, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Hiroyuki Umeda, Toshikazu Kuwano
  • Patent number: 6903538
    Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: June 7, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Hiroyuki Umeda, Toshikazu Kuwano
  • Publication number: 20040165407
    Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 26, 2004
    Inventors: Hiroyuki Umeda, Toshikazu Kuwano
  • Patent number: 6752339
    Abstract: The invention provides a mobile crushing apparatus which is compact and light, has an improved assembling property and maintaining property, and has an improved operability for changing to a traveling attitude. Accordingly, in the apparatus provided with a crusher (10) crushing rocks or the like and a supply conveyor (41) for supplying a material to be crushed, which are mounted on a frame (2), the supply conveyor is provided in one side in a width direction of the frame, and an input shaft (16) for inputting a driving power to the crusher is provided in another side in the width direction of the frame. A power source (30) for the crusher and the supply conveyor is arranged in a stand (5) so as to constitute a power unit (4) and mounted to the frame via the stand.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 22, 2004
    Assignee: Komatsu Ltd.
    Inventors: Yukio Moriya, Toor Nakayama, Kaoru Nishihara, Hiroyuki Umeda
  • Patent number: 6738271
    Abstract: A first charge pump circuit and a second charge pump circuit are complementarily driven by a first driving circuit and a second driving circuit, and step up a DC input voltage by two times. Also, the first driving circuit stops its operation based on a light load judging signal, an input voltage judging signal or an output voltage judging signal, which is input in a control input terminal. For example, when the load is light, there is a margin for the load, and the light load judging signal becomes to be an “L” level. As a result, the first driving circuit stops outputting drive signals, such that the first charge pump circuit stops its operation.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: May 18, 2004
    Assignee: Seiko Epson Corporation
    Inventor: Hiroyuki Umeda
  • Patent number: 6710974
    Abstract: A tape cassette has a cassette case with top face, under face, front face, rear face, and a pair of right and left side face portions. A pair of supply and take-up tape containers sides is provided in the cassette case. A tape is wound around a pair of reels and contained in the pair of tape containers. A first wall portion connects the rear and right side face portion with each other and forms part of the take-up side tape container. A second wall portion connects the rear and left side face portion with each other and forms part of the supply side tape container. A first prism portion extends from the rear face portion to the right side face portion and refracts or reflects light from a light emission element of a recording and reproducing apparatus for detecting presence and absence of the tape cassette.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: March 23, 2004
    Assignee: Victor Company of Japan, Limited
    Inventors: Shigeru Ishikawa, Hiroyuki Umeda, Hisashige Fujiwara, Yasufumi Hashimoto
  • Patent number: 6680819
    Abstract: In a tape cassette having sensor optical path holes provided on respective wall portions on a straight line coupling a position of a light emission element with a position of a light reception element so that light from the light emission element is introduced into a tape container and light passing through a tape running path of the tape container comes out of the tape container and reaches a light reception element, a light shielding member having a light shielding effect is bonded around a sensor optical path hole right after the light from the light emission element comes out of the tape container.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: January 20, 2004
    Assignee: Victor Company of Japan
    Inventors: Shigeru Ishikawa, Hiroyuki Umeda, Hisashige Fujiwara, Yasufumi Hashimoto
  • Publication number: 20030202279
    Abstract: In a tape cassette having sensor optical path holes provided on respective wall portions on a straight line coupling a position of a light emission element with a position of a light reception element so that light from the light emission element is introduced into a tape container and light passing through a tape running path of the tape container comes out of the tape container and reaches a light reception element, a light shielding member having a light shielding effect is bonded around a sensor optical path hole right after the light from the light emission element comes out of the tape container.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 30, 2003
    Applicant: VICTOR COMPANY OF JAPAN, LIMITED
    Inventors: Shigeru Ishikawa, Hiroyuki Umeda, Hisashige Fujiwara, Yasufumi Hashimoto
  • Publication number: 20030189792
    Abstract: In a tape cassette having sensor optical path holes provided on respective wall portions on a straight line coupling a position of a light emission element with a position of a light reception element so that light from the light emission element is introduced into a tape container and light passing through a tape running path of the tape container comes out of the tape container and reaches a light reception element, a light shielding member having a light shielding effect is bonded around a sensor optical path hole right after the light from the light emission element comes out of the tape container.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 9, 2003
    Applicant: VICTOR COMPANY OF JAPAN, LIMITED
    Inventors: Shigeru Ishikawa, Hiroyuki Umeda, Hisashige Fujiwara, Yasufumi Hashimoto
  • Patent number: 6597158
    Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: July 22, 2003
    Assignee: Seiko Epson Corporation
    Inventor: Hiroyuki Umeda
  • Patent number: 6587306
    Abstract: In a tape cassette having sensor optical path holes provided on respective wall portions on a straight line coupling a position of a light emission element with a position of a light reception element so that light from the light emission element is introduced into a tape container and light passing through a tape running path of the tape container comes out of the tape container and reaches a light reception element, a light shielding member having a light shielding effect is bonded around a sensor optical path hole right after the light from the light emission element comes out of the tape container.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: July 1, 2003
    Assignee: Victor Company of Japan, Limited
    Inventors: Shigeru Ishikawa, Hiroyuki Umeda, Hisashige Fujiwara, Yasufumi Hashimoto