Patents by Inventor Kengo Yoshioka
Kengo Yoshioka 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: 20240069280Abstract: A photodetector includes a substrate, a material layer, a first electrode made of a metal, a core, a second electrode and a light absorption layer made of graphene. The first electrode, the core, and the material layer constitute a hybrid plasmonic waveguide, and the light absorption layer is disposed thereon. Light guided in the hybrid plasmonic waveguide is absorbed by the light absorption layer, photoelectrically converted by the PTE effect, and extracted as an electric signal from the first electrode and the second electrode.Type: ApplicationFiled: February 8, 2021Publication date: February 29, 2024Inventors: Masaaki Ono, Katsumasa Yoshioka, Kengo Nozaki, Akihiko Shinya, Masaya Notomi
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Patent number: 6190294Abstract: A horizontal machine tool has a spindle head which supports a horizontal tool spindle. The spindle head is guided on a top surface portion of a base such that the spindle head is movable in two horizontal directions X and Z. A workpiece support for supporting a workpiece on its upper end is guided on the vertical front face portion of the base for movement in a vertical direction Y. When the spindle head is located at a machining position at the center in the X direction, a pair of guide portions of each of a front/back guide mechanism for the spindle head and a vertical guide mechanism for the workpiece support body take symmetrical positions with respect to a vertical plane including the axis of the tool spindle. A first index member and a second index member for supporting the workpiece are provided on the workpiece support body. Therefore, all surfaces of the workpiece excepting an attachment surface can be machined while being directed to a tool on the tool spindle.Type: GrantFiled: September 29, 1998Date of Patent: February 20, 2001Assignee: Toyoda Koki Kabushiki KaishaInventors: Yasuhiro Okada, Kengo Yoshioka, Fumio Sakamoto, Sentaro Sugita, Hidekazu Hirano, Takeshi Nishikayama, Hiroyuki Takahara
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Patent number: 4742706Abstract: A device for imparting strain to a steel sheet by which deformed regions spaced at a desired distance and having a minute linear shape are continuously formed, comprising: a strain imparting roll having projected portions on the surface thereof; a press roll provided opposite to the strain imparting roll; a row of a plurality of groups of back-up rolls for pressing against the press rolls, provided with spaces of a desired distance therebetween in a longitudinal direction of the press roll; and a fluid pressure cylinder connected to each group of the back-up rolls via a bearing, and a fluid supply source connected to the fluid pressure cylinder.Type: GrantFiled: April 29, 1986Date of Patent: May 10, 1988Assignees: Nippon Steel Corporation, Nittetsu Plant Designing CorporationInventors: Eiji Sasaki, Mitsuo Murata, Hisashi Kobayashi, Katsuro Kuroki, Hisao Kitsunezaki, Kengo Yoshioka, Mikio Nakamura
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Patent number: 4720221Abstract: In a cutting machine tool, a spindle head rotatably carries a vertical tool spindle, and an angle spindle attachment is detachably mounted on the lower surface of the spindle head. The angle spindle attachment carries an attachment spindle adapted to receive a cutting tool holder and rotatable by the tool spindle about an axis inclined relative to the axis of the tool spindle. The attachment spindle incorporates therein a draw bar mechanism wherein a draw bar is axially rearwardly urged by the resilient force of springs. To advance the draw bar against the springs, the angle spindle attachment is provided with a push rod movable in a horizontal direction. A thrust direction converting mechanism is further provided in the angle spindle attachment to axially moves the draw bar when the push rod is axially moved by an unclamping device. The unclamping device has an actuation rod, which is horizontally moved by a cylinder device to effect the axial movement of the push rod.Type: GrantFiled: November 12, 1986Date of Patent: January 19, 1988Assignee: Toyoda Koki Kabushiki KaishaInventors: Kengo Yoshioka, Yoshihiko Nishida
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Patent number: 4189963Abstract: An index apparatus for indexing a rotary table rotatably and vertically slidably received within a base, comprises a pair of coupling members secured to the rotary table and the base, respectively, and engageable with each other. The rotary table is lifted and lowered by a hydraulic actuator. The rotary table is rotated by a drive means including a drive motor. Generating means are provided to generate a signal each time the rotary table is rotated a unit angle. Control means are provided to reduce the rotational speed of the rotary table in response to the number of signals generated from the generating means, when the rotary table is rotated to a position spaced a predetermined angular distance from a desired angular position thereof. Control means also cause the rotation of the rotary table to stop in response to the number of signals from the generating means, when the rotary table is rotated to the desired angular position thereof.Type: GrantFiled: July 26, 1978Date of Patent: February 26, 1980Assignee: Toyoda-Koki Kabushiki-KaishaInventors: Yoshikazu Sano, Kyosuke Haga, Kengo Yoshioka
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Patent number: 4169700Abstract: A burner for a regenerative hot blast stove has an upper block containing a burner tile portion having a plurality of burner ports and being inserted removably into the bottom of the hot blast stove; a lower section containing a combustion gas header and a combustion air header and a plurality of unit burners extending from the burner ports into the lower section, said unit burners having a passage for combustion gas and a passage for combustion air, respectively communicating at their one end to the combustion gas header and the combustion air header, and communicating at their other end to the burner port.Type: GrantFiled: September 2, 1977Date of Patent: October 2, 1979Assignee: Nippon Steel CorporationInventors: Kengo Yoshioka, Teruichi Nozato, Haruki Uchiyama, Akira Satoh, Shigeo Inoue, Yuji Togino, Keisuke Mori, Ituro Satou
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Patent number: 4072236Abstract: An article transfer apparatus is provided in which a transfer arm, having a pair of pivotable grippers on each of its ends, is fixedly mounted upon one end of a shaft, extending radially therefrom, the shaft being supported so as to be rotatable and axially movable by actuators. The apparatus further comprises a wedge member movable axially of the shaft for simultaneously operating the pairs of grippers, the wedge member being supported to be floatable radially of the shaft, so that reliable gripping actions are effected on both pairs of grippers.Type: GrantFiled: January 26, 1977Date of Patent: February 7, 1978Assignee: Toyoda-Koki Kabushiki-KaishaInventors: Kenji Nomura, Kengo Yoshioka, Toshihiro Goto
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Patent number: 3979819Abstract: A machine tool having a turret head equipped with a plurality of multiple spindle units on the support stations thereof with the exception of one station rotatably supporting a tool spindle adapted to removably receive a tool, a tool storage magazine storing a plurality of "single" tools, and tool changing apparatus for interchanging the tools between the tool spindle and the tool storage magazine. The turret head may be rotated to successively position one of the multiple spindle units or the tool spindle at an operating position that confronts with the workpiece supported on the worktable such that the multiple spindle unit or the single tool on a tool spindle performs the machining operation on the workpiece.Type: GrantFiled: July 19, 1974Date of Patent: September 14, 1976Assignee: Toyoda Koki Kabushiki KaishaInventors: Kenzi Nomura, Yozi Kamiya, Kengo Yoshioka