Patents by Inventor Tamotsu Yamamoto
Tamotsu Yamamoto 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: 20140215820Abstract: An inner hole to which a driving shaft is inserted is formed in a cam piece of a camshaft, and a plurality of grooves extending in the insertion direction of the driving shaft are formed in the inner hole. The driving shaft is inserted into the inner hole with the cam piece heated to expand the diameter of the inner hole. By reducing again the diameter of the inner hole by cooling it in this state, an outer circumferential surface of the driving shaft is pressed and raised by the inner hole and enters the groove, by which the cam piece is firmly fixed onto the driving shaft.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicants: OTICS CORPORATION, FINE SINTER CO., LTD.Inventors: Tamotsu YAMAMOTO, Eiji ISOGAI, Kazumasa KINOSHITA, Kunihiro NISHIMURA, Hidekazu SATO
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Publication number: 20140147753Abstract: A lithium ionic conductor (solid electrolyte) contains lithium (Li), phosphorus (P), boron (B) and sulfur (S) as constituent elements and has a crystal structure that boron (B) is substituted for part of phosphorus (P) in the ? structure of Li3PS4.Type: ApplicationFiled: February 3, 2014Publication date: May 29, 2014Applicant: FUJITSU LIMITEDInventors: Kenji HOMMA, Tamotsu YAMAMOTO, Tsutomu TANAKA
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Publication number: 20140015633Abstract: A pressure-sensitive switch includes a pressing member, a flexible base member under the pressing member, a resistance layer on an underside of the base member, an electrode group, a third electrode, and a resistance element. The electrode group includes first and second electrodes and confronts the base member so as to be brought into contact with the resistance layer when the pressing member is pressed. The third electrode is disposed apart from the electrode group and confronts the base member same as the electrode group. The resistance element is connected to the first and second electrodes in series therebetween. The first electrode is located nearer a pressing center of the pressing member than the second electrode.Type: ApplicationFiled: September 13, 2013Publication date: January 16, 2014Applicant: Panasonic CorporationInventors: RYO NAKAE, TAMOTSU YAMAMOTO
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Publication number: 20130314347Abstract: A touch panel includes a first substrate, multiple translucent first electrodes, multiple first wirings, a second substrate, multiple translucent second electrodes, multiple second wirings, and a light-shielding layer. The first wirings include first ends connected to the respective first electrodes, and second ends extending to the edge of the first substrate. The second wirings include first ends connected to the respective second electrodes, and second ends extending to the edge of the second substrate. The light-shielding layer is formed on the first substrate in a position covering at least a part of the first wirings and also corresponding to at least a part of the second wirings.Type: ApplicationFiled: May 15, 2013Publication date: November 28, 2013Applicant: PANASONIC CORPORATIONInventors: Keisyu MURAOKA, Tamotsu YAMAMOTO
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Publication number: 20130302705Abstract: To provide an air secondary battery, which contains: an anion exchange membrane; an anode containing a metal, which is provided at one side of the anion exchange membrane; and a cathode, which is provided at the opposite side of the anode across the anion exchange membrane, and is in contact with air, wherein the cathode contains an amphoteric catalyst layer containing an amphoteric catalyst, and an oxygen reduction catalyst layer containing an oxygen reduction catalyst in this order from the side of the anion exchange membrane, where the amphoteric catalyst exhibits activity in oxygen reduction, and activity in oxygen generation, and the oxygen reduction catalyst exhibits activity in oxygen reduction.Type: ApplicationFiled: July 18, 2013Publication date: November 14, 2013Applicant: FUJITSU LIMITEDInventors: Kensuke YOSHIDA, Tsutomu TANAKA, Tamotsu YAMAMOTO, Masaaki SASA
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Patent number: 8558542Abstract: A magnetic detector includes a detecting section having a surface facing a magnetic body which moves and emits a magnetic flux. The detecting section includes plural magnetic sensors for detecting the magnetic flux. The magnetic sensors are arranged in a matrix form having three or more rows and three or more columns arranged along the surface of the detecting section. The magnetic detector provides an input device precisely detecting a moving direction and a moving amount of the magnetic body.Type: GrantFiled: March 5, 2010Date of Patent: October 15, 2013Assignee: Panasonic CorporationInventors: Tamotsu Yamamoto, Hiroaki Nishiono, Noritaka Hayama, Hiroto Inoue, Kenji Kataoka
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Patent number: 8552981Abstract: A multidirectional input device includes ring-shaped resistance element layer 18, first conductive layer 22 and second conductive layer 23 shaping in arcs corresponding to resistance element layer 18, and knob 14 having ring-shaped protruded section 14D. Resistance element layer 18 has at least a pair of electrodes and is formed on flexible insulating substrate 16. Protruded section 14D brings resistance element layer 18 into contact with first conductive layer 22 or second conductive layer 23 when the knob is tilted. When a given voltage is applied to the electrodes and the knob is tilted, resistance element layer 18 comes in contact with first conductive layer 22 or second conductive layer 23, so that an output signal of a high resolution concerning a tilt angle can be obtained. The output signal is supplied to a microprocessor and calculated, then an angle or a direction is detected and recognized.Type: GrantFiled: August 10, 2004Date of Patent: October 8, 2013Assignee: Panasonic CorporationInventors: Hiroto Inoue, Hiroyasu Okada, Tamotsu Yamamoto, Masaki Sawada, Keiji Kaizaki
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Patent number: 8466872Abstract: An input apparatus includes a case, an operation body stored rotatably in the case, a magnetic body fixed to the operation body, a magnet provided around the operation body, a magnetic detection element for detecting a magnetic flux from the magnetic body, and a frame for retaining the case. The magnetic detection element faces the operation body with a predetermined space therebetween. The frame includes depression sections for causing the magnetic detection element to elastically contact the lower surface of the case. This input apparatus can accurately detect a rotation angle.Type: GrantFiled: December 16, 2010Date of Patent: June 18, 2013Assignee: Panasonic CorporationInventors: Masatoshi Enomoto, Tamotsu Yamamoto, Kenji Nishimura
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Patent number: 8390275Abstract: A left-side ring magnet and a right-side ring magnet are fastened to a roller-shaped operation part, circumferentially displaced from each other by a certain angle. Magnetic variation generated by rotation of the magnets is detected by a magnetism detection element. Additionally, a left-side stationary magnet and a right-side stationary magnet, with the same magnetic pole, are annexed correspondingly to the left-side ring magnet and the right-side ring magnet, respectively, so that the stationary magnets are arranged with the same proximal arrangement relative to the ring magnets, respectively. With such a structure, two attractive and repulsive forces between the left-side ring magnet and the left-side stationary magnet; and between the right-side ring magnet and the right-side stationary magnet are totally exerted on the operation part, thereby providing a sharp, clear click touch during rotation.Type: GrantFiled: April 4, 2008Date of Patent: March 5, 2013Assignee: Panasonic CorporationInventors: Hiroto Inoue, Tamotsu Yamamoto
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Patent number: 8368651Abstract: An input device includes a case, a ball, a magnetic detecting element, a wiring board, and a rocking part. The ball is rotatably accommodated in the case, exposed from an opening of the case, and is embedded with a magnetic substance having a plurality of protrusions or with a plurality of magnets. In a case the magnetic substance is embedded in the ball, a magnet is placed where its magnetism affects the plurality of protrusions. The magnetic detecting element is disposed facing the ball with a certain gap. The switch is mounted on the wiring board. The rocking part is placed between the case and the switch, supporting the case in a swingable manner with respect to the switch. The switch is turned on and off corresponding to a rocking motion of the rocking part. The ball and the magnetic detecting element are attached to the rocking part so that the gap is kept constant with each other when the rocking part rocks.Type: GrantFiled: February 18, 2009Date of Patent: February 5, 2013Assignee: Panasonic CorporationInventors: Tamotsu Yamamoto, Shinichi Takasaki
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Publication number: 20130003259Abstract: To provide an electrolyte solution, which contains an electrolyte compound, a molecular structure of which contains a molecular chain containing a repeating unit of alkylene oxide, and contains quaternary ammonium cations at both terminals of the molecular chain.Type: ApplicationFiled: September 14, 2012Publication date: January 3, 2013Applicant: FUJITSU LIMITEDInventors: Masaaki SASA, Tamotsu YAMAMOTO, Tsutomu TANAKA, Kensuke YOSHIDA
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Publication number: 20120242580Abstract: An input device including a touch panel, and a control circuit which is electrically coupled to the touch panel and which determines a pressing force on the touch panel. When the pressing force is not larger than a predetermined first value, the control circuit sets the touch panel to an input state; when the pressing force is larger than the first value and not larger than a predetermined second value, the control circuit sets the touch panel to a standby state; and when the pressing force is larger than the second value, the control circuit decides an input to the touch panel and sets the touch panel to the input state.Type: ApplicationFiled: March 7, 2012Publication date: September 27, 2012Applicant: PANASONIC CORPORATIONInventor: TAMOTSU YAMAMOTO
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Patent number: 8212767Abstract: An input device has a circular arc resistive layer and a metal plate as a conductive layer that is faced to the circular arc resistive layer, and can detect a position operated by partial contact between them. The input device has an element unit where a linear insulating layer as a contact preventing unit for preventing both ends of the circular arc resistive layer from simultaneously coming into contact with the metal plate during operation is disposed on one end of the circular arc resistive layer.Type: GrantFiled: April 10, 2007Date of Patent: July 3, 2012Assignee: Panasonic CorporationInventors: Masaki Sawada, Tamotsu Yamamoto, Hiroto Inoue
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Publication number: 20120133586Abstract: An input device comprises a rotatable magnet member, a lower casing and an upper casing. The rotatable magnet member has a magnet, a spherical part and a rod-like shaft. The magnet is formed into a ring-shaped disc with a through hole in the center, and magnetized with N and S poles alternately along the circumferential direction. The rod-like shaft having a flange portion near a first end is inserted in the through hole, and both ends protrude from the through hole. The lower casing rotatably supports the rod-like shaft of the rotatable magnet member. There is a space provided between an outer peripheral surface of a part of the rod-like shaft inside the through hole and an inner wall of the through hole over the entire peripheries, and the flange portion is press-fitted and fixed to the spherical part.Type: ApplicationFiled: November 15, 2011Publication date: May 31, 2012Applicant: Panasonic CorporationInventors: Kenji Nishimura, Masaki Sawada, Tamotsu Yamamoto
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Patent number: 8184023Abstract: A rotary input device includes a circular ring shaped operation body, a magnetic first guide plate fixed to the bottom of the operation body, movable magnets disposed on the bottom of a first flat plane of the first guide plate concentrically with the operation body, a base for rotatably supporting the operation body from beneath, a detection element for detecting a change in magnetic field from the movable contacts due to rotating operation of the operation body without making contact, and a magnetic second guide plate fixed to the base having a plurality of second flat planes opposite to the position of the movable magnets so as to be opposite to each one of the movable magnets. The movable magnets face to or depart from each one of the second flat planes of the second guide plate depending on the rotation of the operation body.Type: GrantFiled: September 3, 2008Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Yoshio Naka, Tamotsu Yamamoto, Takumi Nishimoto
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Patent number: 8139033Abstract: An input device includes a ball having a magnetic body therein. The magnetic body includes projections radially extending from the core toward the outer periphery of the ball. The device also includes a ring magnet and magnet detection elements surrounded by a lower area of the ball so as to be opposite thereto. The structure allows the input device to be protected from dust and dirt during long-term use so as to maintain a good tactile feel in a simple structure. Because, the input device has no components such as rollers that are in contact with the ball.Type: GrantFiled: October 22, 2008Date of Patent: March 20, 2012Assignee: Panasonic CorporationInventors: Tamotsu Yamamoto, Shinichi Takasaki, Yoshio Naka
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Patent number: 8130123Abstract: A rotary actuator includes a roller having a center shaft protruding along a center axis, a bearing for supporting the center shaft of the roller to allow the roller to rotate about the center axis, a ring magnet fixed to the center shaft of the roller, an elastic member having a ring shape provided between the center shaft of the roller and the bearing, and a fixed magnet facing the ring magnet. The ring magnet is alternately magnetized to an S-pole and an N-pole with predetermined angular intervals. This rotary actuator has a simple structure and operates with a preferable operation feeling.Type: GrantFiled: September 23, 2008Date of Patent: March 6, 2012Assignee: Panasonic CorporationInventors: Hiroto Inoue, Tamotsu Yamamoto
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Publication number: 20110298735Abstract: An input device includes an electrode part, a switching circuit, a driving circuit, a detecting circuit, and a controller. The electrode part includes a plurality of electrode pieces. The switching circuit is formed of a plurality of switches connected to the electrode pieces respectively. The driving circuit and the detecting circuit are connected to the electrode part via the switching circuit. The controller is connected to the driving circuit, the switching circuit, and the detecting circuit. The controller controls the respective switches such that the electrode pieces are individually opened or connected to one of the driving circuit and the detecting circuit.Type: ApplicationFiled: May 19, 2011Publication date: December 8, 2011Inventors: Shinji KAMAEGUCHI, Tamotsu Yamamoto, Hiroyasu Okada, Takaya Nakamura, Naoyuki Takagi
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Patent number: 8054293Abstract: An electronic apparatus disclosed facilitates the replacement of an input device. In the electronic apparatus equipped with the input device allowing various input operations, the input device including first signal generators is positioned by being placed in an opening of a housing from the outside. A cover can be detached from the housing and fixes the input device when installed in the opening of the housing. Second signal generators are provided inside the housing and function in combination with the respective first signal generators. Just mounting the cover to the housing fixes the input device. This facilitates the replacement of the input device, eliminating the need to open the housing and to remove a wiring board mounted with the second signal generators in replacement of the input device.Type: GrantFiled: July 24, 2007Date of Patent: November 8, 2011Assignee: Panasonic CorporationInventors: Keiji Kaizaki, Tamotsu Yamamoto
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Publication number: 20110241657Abstract: An input device including multiple magnets rotatably disposed, multiple magnetic field detecting elements, and a controller. The magnets have the N pole and the S pole formed at a predetermined angular pitch in a rotating direction. The magnetic field detecting elements are disposed facing the magnets. The controller outputs a driving signal in response to a pulse signal output from the magnetic field detecting elements. The controller changes the driving signal to be output in response to a time difference or the number of pulses of pulse signals output from the magnetic field detecting elements.Type: ApplicationFiled: March 11, 2011Publication date: October 6, 2011Applicant: PANASONIC CORPORATIONInventors: HIROAKI NISHIONO, ERIKA SAWADA, TAMOTSU YAMAMOTO