Patents by Inventor Takuro Kohyama
Takuro Kohyama 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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Patent number: 7354213Abstract: In a printer, a sheet discharge port for discharging a sheet therefrom is provided on the upper surface of an exterior case, and a recess portion for preventing invasion of a foreign material into the sheet discharge port is formed in the neighborhood of the sheet discharge port. The recess portion passes by the sheet discharge port, and at least one of the ends thereof is opened to the side surface of the exterior case. The side surface of the exterior case to which the open end of the recess portion is adjacent forms a foreign material discharging passage along which a foreign material discharged from the open end of the recess portion falls down without invading the printer.Type: GrantFiled: March 16, 2005Date of Patent: April 8, 2008Assignee: Citizen Holdings Co., Ltd.Inventors: Yasuo Iwata, Kazumi Hasegawa, Takuro Kohyama
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Patent number: 7246960Abstract: A needle guide (5) is composed of a first guide wall (5a) and a second guide wall (5b) arranged at a distance x from each other. Each of these guide walls is formed with through holes through which needles penetrate and which extends parallel to the longitudinal direction of a needle bunch, the through holes of the first guide wall and the second guide wall for one needle is shifted from each other in the convergence direction of the needles with a shift amount ?n determined by the distance x and a convergence angle ?n of the needle.Type: GrantFiled: February 10, 2004Date of Patent: July 24, 2007Assignee: Citizen Watch Co., Ltd.Inventors: Takuro Kohyama, Kazumi Hasegawa, Yasuo Iwata
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Patent number: 7234149Abstract: A guide member (20) is disposed between a body chassis (2) of a disk driving apparatus (1) and an electric connection wire (15). The guide member (20) moves together with a tray (3) to prevent the body chassis (2) and the electric connection wire (15) from coming into contact with each other and moving. In a state in which the tray (3) is sufficiently pulled out from the body chassis (2), the guide member (20) projects from the tray (3) to prevent the electric connection wire (15) from coming into contact with the body chassis (2).Type: GrantFiled: August 6, 2002Date of Patent: June 19, 2007Assignee: Citizen Watch Co., Ltd.Inventors: Shoji Takahashi, Maki Wakita, Takuro Kohyama
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Patent number: 7207049Abstract: A disk drive device (1) comprises a body chassis (2) and a tray (3) movable relative to the body chassis (2). The body chassis (2) is provided with a stage (6) at one side thereof, which is higher than the central bottom face. On the other hand, a part of the disk protective portion (11) of the tray (3), which overlaps the stage (6), is cut out at its rear end (20a) in an arc shape. As a result, the disk protective portion (11) covers the whole area of a disk (14) and, at the same time, forms a large space between it and the front end (6a) of the stage (6).Type: GrantFiled: August 6, 2002Date of Patent: April 17, 2007Assignee: Citizen Watch Co., Ltd.Inventors: Shoji Takahashi, Maki Wakita, Takuro Kohyama
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Publication number: 20060147238Abstract: A needle guide (5) is composed of a first guide wall (5a) and a second guide wall (5b) arranged at a distance x from each other. Each of these guide walls is formed with through holes through which needles penetrate and which extends parallel to the longitudinal direction of a needle bunch, the through holes of the first guide wall and the second guide wall for one needle is shifted from each other in the convergence direction of the needles with a shift amount ?n determined by the distance x and a convergence angle ?n of the needle.Type: ApplicationFiled: February 10, 2004Publication date: July 6, 2006Inventors: Takuro Kohyama, Kazumi Hasegawa, Yasuo Iwata
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Publication number: 20050206709Abstract: In a printer, a sheet discharge port for discharging a sheet therefrom is provided on the upper surface of an exterior case, and a recess portion for preventing invasion of a foreign material into the sheet discharge port is formed in the neighborhood of the sheet discharge port. The recess portion passes by the sheet discharge port, and at least one of the ends thereof is opened to the side surface of the exterior case. The side surface of the exterior case to which the open end of the recess portion is adjacent forms a foreign material discharging passage along which a foreign material discharged from the open end of the recess portion falls down without invading the printer.Type: ApplicationFiled: March 16, 2005Publication date: September 22, 2005Applicant: CITIZEN WATCH CO., LTD.Inventors: Yasuo Iwata, Kazumi Hasegawa, Takuro Kohyama
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Patent number: 6934119Abstract: A disk drive apparatus according to the present invention includes a horizontal guide mechanism and a vertical guide mechanism, which are disposed between a frame (10) and a slider (60) for slidably guiding the slider (60). The horizontal guide mechanism includes an engaging piece (69b) disposed in at least one of the frame (10) and the slider (60) and an engaging hole (24a), which is disposed in the other and is engaged with the engaging piece (69b). One of the frame (10) and the slider (60), in which the engaging piece (69b) is formed, is made of a metallic sheet material while the engaging piece (69b) is formed by bending part of the metallic sheet material. Forming the engaging piece (69b) by bending part of the metallic sheet material in such a manner simplifies the structure of the disk drive apparatus according to the present invention so that the fabrication is facilitated, enabling fabricating cost to be reduced.Type: GrantFiled: June 26, 2001Date of Patent: August 23, 2005Assignee: Citizen Watch Co., Ltd.Inventors: Takuro Kohyama, Yoshiyuki Ohishi, Kiyoshi Mori
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Publication number: 20040233799Abstract: A guide member (20) is disposed between a body chassis (2) of a disk driving apparatus (1) and an electric connection wire (15). The guide member (20) moves together with a tray (3) to prevent the body chassis (2) and the electric connection wire (15) from coming into contact with each other and moving. In a state in which the tray (3) is sufficiently pulled out from the body chassis (2), the guide member (20) projects from the tray (3) to prevent the electric connection wire (15) from coming into contact with the body chassis (2).Type: ApplicationFiled: January 28, 2004Publication date: November 25, 2004Inventors: Shoji Takahashi, Maki Wakita, Takuro Kohyama
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Publication number: 20040205785Abstract: A tray-side terminal area of a disc drive unit (1) and a body-side terminal area on the body chassis side are connected electrically to each other by the use of a flat belt-shaped connecting wire (17). The belt-shaped connecting wire (17) is one general-purpose, belt-shaped FFC (17) with a given width and a given length that is folded at 45° at two positions (f, g) in its center. A part of the FFC (17) on the side of the body-side terminal area is fixed on a body chassis (2), while a part of the FFC (17) on the side of tray-side terminal area is lifted and bent in the shape of a horizontal U in the middle.Type: ApplicationFiled: September 24, 2003Publication date: October 14, 2004Inventors: Shoji Takahashi, Katsuhiko Fujinuma, Takuro Kohyama
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Publication number: 20040199928Abstract: A disk drive device (1) comprises a body chassis (2) and a tray (3) movable relative to the body chassis (2). The body chassis (2) is provided with a stage (6) at one side thereof, which is higher than the central bottom face. On the other hand, a part of the disk protective portion (11) of the tray (3), which overlaps the stage (6), is cut out at its rear end (20a) in an arc shape. As a result, the disk protective portion (11) covers the whole area of a disk (14) and, at the same time, forms a large space between it and the front end (6a) of the stage (6).Type: ApplicationFiled: January 28, 2004Publication date: October 7, 2004Inventors: Shoji Takahashi, Maki Wakita, Takuro Kohyama
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Publication number: 20040117807Abstract: Even after a carriage (8) of a disc drive unit is moved to a stop position, a screw shaft (22) continues to rotate, thereby compressing a spring (25) to advance an anchor member (21) in engagement with the screw shaft (22). Thereupon, a guide bar (24), which is integral with the anchor member (21) and in engagement with a carriage supporting portion (23), moves, so that a lock mechanism is actuated to unlock a tray from a body frame.Type: ApplicationFiled: July 21, 2003Publication date: June 17, 2004Inventors: Shoji Takahashi, Maki Wakita, Takuro Kohyama
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Patent number: 6747844Abstract: If a floppy disk (200) is inserted into a disk drive unit, a link member (52) rotates due to the movement of the floppy disk (200), and a slide piece (61) recedes from under a projecting piece (131) of an upper head support arm (121). In consequence, the distal end of the upper head support arm (121) descends, so that an upper head which is mounted on the distal end of the upper head support arm approaches a lower head which is mounted on the distal end of a lower head support arm.Type: GrantFiled: June 29, 2001Date of Patent: June 8, 2004Assignee: Citizen Watch Company, Ltd.Inventors: Isao Arai, Yoshiyuki Ohishi, Takuro Kohyama, Shigeru Obata
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Publication number: 20020114106Abstract: A disk drive apparatus according to the present invention includes a horizontal guide mechanism and a vertical guide mechanism, which are disposed between a frame (10) and a slider (60) for slidably guiding the slider (60). The horizontal guide mechanism includes an engaging piece (69b) disposed in at least one of the frame (10) and the slider (60) and an engaging hole (24a), which is disposed in the other and is engaged with the engaging piece (69b). One of the frame (10) and the slider (60), in which the engaging piece (69b) is formed, is made of a metallic sheet material while the engaging piece (69b) is formed by bending part of the metallic sheet material.Type: ApplicationFiled: February 25, 2002Publication date: August 22, 2002Inventors: Takuro Kohyama, Yoshiyuki Ohishi, Kiyoshi Mori
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Patent number: 6299664Abstract: A method of manufacturing a sliding part includes: an injection molding step of injection-molding a compacted member of a molding compound which is a mixture of powder material equivalent to SUS440C, graphite carbon corresponding to an oxygen content of the material, and a binder; a degreasing step of heating the compacted member thus obtained by the injection molding step under a neutral atmospheric condition to remove substantially all of the binder from the compacted member; and a baking step of heating the compacted member which is degreased under a vacuum condition of 0.1333 Pa or less from a room temperature up to 1000° C. to reduce an oxygen content of the compacted member to 0.02% or less by the reaction of C+O→CO, and then heating the compacted member under an argon atmospheric condition of 133.3 to 3999 Pa for two hours after the temperature is increased up to 1250° C.Type: GrantFiled: September 29, 1998Date of Patent: October 9, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Osamu Matsumoto, Masayuki Aota, Mamoru Sumida, Tsuyoshi Munezane, Takao Kasai, Takuro Kohyama