Patents by Inventor Yoichi Okamoto
Yoichi Okamoto 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: 7865997Abstract: A dry type cleaning technology is disclosed. Dust adhering to a cleaning object is removed with a cleaning medium caused to flow by a high-speed airflow. The removed dust is separated from the cleaning medium with a porous member including holes through which air, dust, and granular material can pass but the cleaning medium cannot pass. An area on the porous member where air is received to cause the cleaning medium to flow and an area on the porous member where air is received to suction the dust separated from the cleaning medium are switched.Type: GrantFiled: October 31, 2006Date of Patent: January 11, 2011Assignee: Ricoh Company, Ltd.Inventors: Akihiro Fuchigami, Yoichi Okamoto, Tatsuya Satoh
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Patent number: 7854648Abstract: A cleaning medium flies with an air current in a cleaning tank to collide with an object to be cleaned so as to remove an extraneous substance attached to the object. The cleaning medium includes an outer surface that comes into contact with the object and an inner surface that remains out of contact with the object. The cleaning medium is flexible and formed in a shape that allows the air current to flow from the outside onto the inner surface of the cleaning medium.Type: GrantFiled: December 13, 2007Date of Patent: December 21, 2010Assignee: Ricoh Company, Ltd.Inventors: Tatsuya Satoh, Yoichi Okamoto, Akihiro Fuchigami, Yuusuke Taneda
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Publication number: 20100307535Abstract: A cleaning device (1) performs a cleaning of an article by blowing a cleaning medium (5) by an air stream onto the article (4). The cleaning device (1) includes a cleaning tank (6) that forms a space for the cleaning medium (5) to be blown, which includes an opening; a holding unit (3) that holds the article (4) at the opening; a pool member (19) that is arranged on an outer edge of the opening with a clearance between the pool member (19) and the article (4); and a cleaning-medium collecting unit (8) that brings the cleaning medium (5) leaked out of the outer edge and accumulated in the clearance back into the cleaning tank (6).Type: ApplicationFiled: February 24, 2009Publication date: December 9, 2010Inventors: Akihiro Fuchigami, Tatsuya Satoh, Yoichi Okamoto, Yuusuke Taneda
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Patent number: 7758700Abstract: A cleaning method for cleaning a powder container by introducing a cleaning medium into the powder container from a first opening part of the powder container for attaching powder in the powder container to the cleaning medium and discharging the cleaning medium together with the powder from a second opening part situated opposite from the first opening part is disclosed. The method includes a step of releasing the cleaning medium from a position higher than the first opening part of the powder container.Type: GrantFiled: August 12, 2005Date of Patent: July 20, 2010Assignee: Ricoh Company, Ltd.Inventors: Akihiro Fuchigami, Toshiyuki Mutoh, Yoichi Okamoto, Shigeru Yamada, Tomoyasu Hirasawa
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Patent number: 7743776Abstract: A dry cleaning apparatus which causes cleaning agent to fly in a gas current to impact an object to be cleaned so as to remove extraneous substance attached to the object includes a cleaning tank defining an interior space for accommodating the cleaning agent and the object with the attached extraneous substance, an inflow unit configured to guide a gas current into the cleaning tank through an inlet, an aspiration unit configured to discharge gas from the cleaning tank through an aspiration opening, and a separation unit disposed between the interior space of the cleaning tank and both the inflow unit and the aspiration unit, the separation unit having openings that allow the gas and the extraneous substance to pass through but do not allow the cleaning agent to pass through, wherein the inlet, the aspiration opening, and the separation unit are configured such that relative motion is created between the separation unit and both the inlet and the aspiration opening.Type: GrantFiled: May 31, 2006Date of Patent: June 29, 2010Assignee: Ricoh Company, Ltd.Inventors: Yoichi Okamoto, Akihiro Fuchigami, Toshiyuki Mutoh, Tomoyasu Hirasawa, Tatsuya Satoh
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Patent number: 7730896Abstract: A circulation-air generating unit directly generates circulation air that flows along a surface of a cleaning tank. The circulation air is applied to cleaning medium accumulated on the cleaning tank from a direction orthogonal to a direction of face of the cleaning medium to deliver and flow up the cleaning medium. The cleaning medium is flown up inside the cleaning tank by the force of the circulation air. The cleaning medium flowing inside the cleaning tank collides with a cleaning target object by high-velocity air supplied from a cleaning-medium accelerating unit to remove dust on the cleaning target object.Type: GrantFiled: August 29, 2007Date of Patent: June 8, 2010Assignee: Ricoh Company, LimitedInventors: Yoichi Okamoto, Yuusuke Taneda, Akihiro Fuchigami, Tatsuya Satoh
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Publication number: 20100109763Abstract: A standard voltage generation circuit is provided with a function of automatically stopping charging when a standard voltage reaches a stable voltage point by rapidly charging a standard voltage stabilization capacitor during transition from a standby state to a normal operation state. The standard voltage generation circuit is also provided with a function of precharging an output terminal of the circuit to a voltage close to the stable voltage by a potential division effect of the capacitor during transition from the standby state to the normal operation state. Thereby, it is possible to prevent an increase in the amount of time that is required until the standard voltage reaches the stable voltage when the state of an analog circuit included in the standard voltage generation circuit changes from its off state to its on state.Type: ApplicationFiled: January 13, 2010Publication date: May 6, 2010Inventors: Junichi Naka, Michiko Tokumaru, Yoichi Okamoto, Koji Oka
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Publication number: 20090314312Abstract: A cleaning apparatus for cleaning an object to be cleaned by allowing a cleaning medium caused to fly by an air flow to collide with the object to be cleaned is provided. The cleaning apparatus includes a cleaning tank in which the cleaning medium is caused to fly by the air flow and which has an opening to allow the object to be cleaned to pass through; a cleaning medium accelerating part provided at a bottom part of the cleaning tank and to inject the air flow to cause the cleaning medium to fly; a hollow elongated member having substantially the same inner diameter as a diameter of the opening, connected outside the opening, and configured to form a movement path for the object to be cleaned; and a cleaning medium returning part to return the cleaning medium stagnant in the hollow elongated member into the cleaning tank.Type: ApplicationFiled: June 15, 2009Publication date: December 24, 2009Inventors: Akihiro FUCHIGAMI, Tatsuya SATOH, Yoichi OKAMOTO, Yuusuke TANEDA
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Patent number: 7488147Abstract: The spindle device 1 is provided with: a housing 10 formed with a support hole 10a; a spindle 12 which is supported to rotate freely about an axis within the support hole 10a of the housing 10 and of which distal end is attached with a tool T; a drive motor 20 for rotating the spindle 12 about the axis, the drive motor 20 being configured by a rotor 22 arranged to rotate freely on an outer circumferential surface of the spindle 12 and a stator 23 fixedly provided on an inner circumferential surface of the support hole 10a of the housing 10; an electromagnetic clutch 30 for transmitting intermittently a drive force of the drive motor 20 to the spindle 12; and a controlling device 40 for controlling an operation of the drive motor 20 and that of the electromagnetic clutch 30.Type: GrantFiled: December 21, 2007Date of Patent: February 10, 2009Assignees: Mori Seiki Co., Ltd., Intelligent Manufacturing Systems InternationalInventors: Kazuo Yamazaki, Makoto Fujishima, Yoichi Okamoto
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Publication number: 20080212625Abstract: Disclosed is a semiconductor apparatus comprising an N-type material which cools a silicon semiconductor using the current flowing through the silicon semiconductor.Type: ApplicationFiled: January 14, 2008Publication date: September 4, 2008Applicant: Kabusiki Kaisha Y.Y.L.Inventors: Sataro YAMAGUCHI, Yoichi Okamoto
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Publication number: 20080157861Abstract: A standard voltage generation circuit is provided with a function of automatically stopping charging when a standard voltage reaches a stable voltage point by rapidly charging a standard voltage stabilization capacitor during transition from a standby state to a normal operation state. The standard voltage generation circuit is also provided with a function of precharging an output terminal of the circuit to a voltage close to the stable voltage by a potential division effect of the capacitor during transition from the standby state to the normal operation state. Thereby, it is possible to prevent an increase in the amount of time that is required until the standard voltage reaches the stable voltage when the state of an analog circuit included in the standard voltage generation circuit changes from its off state to its on state.Type: ApplicationFiled: February 28, 2008Publication date: July 3, 2008Inventors: Junichi NAKA, Michiko Tokumaru, Yoichi Okamoto, Koji Oka
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Publication number: 20080152451Abstract: The spindle device 1 is provided with: a housing 10 formed with a support hole 10a; a spindle 12 which is supported to rotate freely about an axis within the support hole 10a of the housing 10 and of which distal end is attached with a tool T; a drive motor 20 for rotating the spindle 12 about the axis, the drive motor 20 being configured by a rotor 22 arranged to rotate freely on an outer circumferential surface of the spindle 12 and a stator 23 fixedly provided on an inner circumferential surface of the support hole 10a of the housing 10; an electromagnetic clutch 30 for transmitting intermittently a drive force of the drive motor 20 to the spindle 12; and a controlling device 40 for controlling an operation of the drive motor 20 and that of the electromagnetic clutch 30.Type: ApplicationFiled: December 21, 2007Publication date: June 26, 2008Applicants: MORI SEIKI CO., LTD., INTELLIGENT MANUFACTURING SYSTEMS INTERNATIONALInventors: Kazuo YAMAZAKI, Makoto FUJISHIMA, Yoichi OKAMOTO
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Publication number: 20080141484Abstract: A cleaning medium flies with an air current in a cleaning tank to collide with an object to be cleaned so as to remove an extraneous substance attached to the object. The cleaning medium includes an outer surface that comes into contact with the object and an inner surface that remains out of contact with the object. The cleaning medium is flexible and formed in a shape that allows the air current to flow from the outside onto the inner surface of the cleaning medium.Type: ApplicationFiled: December 13, 2007Publication date: June 19, 2008Inventors: Tatsuya Satoh, Yoichi Okamoto, Akihiro Fuchigami, Yuusuke Taneda
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Publication number: 20080052953Abstract: A circulation-air generating unit directly generates circulation air that flows along a surface of a cleaning tank. The circulation air is applied to cleaning medium accumulated on the cleaning tank from a direction orthogonal to a direction of face of the cleaning medium to deliver and flow up the cleaning medium. The cleaning medium is flown up inside the cleaning tank by the force of the circulation air. The cleaning medium flowing inside the cleaning tank collides with a cleaning target object by high-velocity air supplied from a cleaning-medium accelerating unit to remove dust on the cleaning target object.Type: ApplicationFiled: August 29, 2007Publication date: March 6, 2008Inventors: Yoichi Okamoto, Yuusuke Taneda, Akihiro Fuchigami, Tatsuya Satoh
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Publication number: 20070295363Abstract: A cleaning method for cleaning a powder container by introducing a cleaning medium into the powder container from a first opening part of the powder container for attaching powder in the powder container to the cleaning medium and discharging the cleaning medium together with the powder from a second opening part situated opposite from the first opening part is disclosed. The method includes a step of releasing the cleaning medium from a position higher than the first opening part of the powder container.Type: ApplicationFiled: August 12, 2005Publication date: December 27, 2007Inventors: Akihiro Fuchigami, Toshiyuki Mutoh, Yoichi Okamoto, Shigeru Yamada, Tomoyasu Hirasawa
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Publication number: 20070107752Abstract: A dry type cleaning technology is disclosed. Dust adhering to a cleaning object is removed with a cleaning medium caused to flow by a high-speed airflow. The removed dust is separated from the cleaning medium with a porous member including holes through which air, dust, and granular material can pass but the cleaning medium cannot pass. An area on the porous member where air is received to cause the cleaning medium to flow and an area on the porous member where air is received to suction the dust separated from the cleaning medium are switched.Type: ApplicationFiled: October 31, 2006Publication date: May 17, 2007Inventors: Akihiro Fuchigami, Yoichi Okamoto, Tatsuya Satoh
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Publication number: 20060132225Abstract: A standard voltage generation circuit is provided with a function of automatically stopping charging when a standard voltage reaches a stable voltage point by rapidly charging a standard voltage stabilization capacitor during transition from a standby state to a normal operation state. The standard voltage generation circuit is also provided with a function of precharging an output terminal of the circuit to a voltage close to the stable voltage by a potential division effect of the capacitor during transition from the standby state to the normal operation state. Thereby, it is possible to prevent an increase in the amount of time that is required until the standard voltage reaches the stable voltage when the state of an analog circuit included in the standard voltage generation circuit changes from its off state to its on state.Type: ApplicationFiled: December 27, 2005Publication date: June 22, 2006Inventors: Junichi Naka, Michiko Tokumaru, Yoichi Okamoto, Koji Oka
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Publication number: 20040212421Abstract: A standard voltage generation circuit is provided with a function of automatically stopping charging when a standard voltage reaches a stable voltage point by rapidly charging a standard voltage stabilization capacitor during transition from a standby state to a normal operation state. Further, the standard voltage generation circuit is provided with a function of precharging an output terminal of the circuit to a voltage close to the stable voltage by a potential division effect of the capacitor during transition from the standby state to the normal operation state. Thereby, it is possible to prevent an increase in time required until the standard voltage reaches the stable voltage when the standard voltage generation circuit including an analog circuit changes from its off state to its on state.Type: ApplicationFiled: February 25, 2004Publication date: October 28, 2004Inventors: Junichi Naka, Michiko Tokumaru, Yoichi Okamoto, Koji Oka
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Patent number: 6700524Abstract: An A/D converter comprises a pipeline stage array in which plural pipeline stages are connected in series, each pipeline stage performing a pipeline operation on an inputted analog voltage to output a digital voltage; a number-of-bits control circuit for outputting a number-of-bits selection signal which indicates whether the operation of each pipeline stage should be carried out or halted, according to a number-of-bits control signal which indicates a resolution; and a correction circuit for compensating a digital value to be output, according to the number-of-bits control signal. Therefore, when resolution of the A/D converter, which is requested by the system, is changed, only the pipeline stages required for realizing the requested resolution are operated while the other pipeline stages are halted, whereby a reduction in power consumption of the A/D converter is realized and, simultaneously, a breakdown of an output from the A/D converter is avoided.Type: GrantFiled: September 27, 2002Date of Patent: March 2, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Junichi Naka, Yoichi Okamoto, Yoshitsugu Inagaki, Kenji Murata, Koji Oka
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Patent number: D487249Type: GrantFiled: August 30, 2002Date of Patent: March 2, 2004Assignee: Bridgestone CorporationInventor: Yoichi Okamoto