Patents by Inventor Akira Oyama
Akira Oyama 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: 20040170897Abstract: An alkaline battery having as an anode a zinc or zinc alloy powder obtained by dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream and striking an atomizing medium jet emitted from a nozzle against the molten metal stream at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 025 kg/sec, and two or more of the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Applicants: MITSUI MINING & SMELTING COMPANY, LTD, MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura
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Patent number: 6746509Abstract: A process of producing a zinc or zinc alloy powder (4) for batteries which comprises dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream (1) and striking an atomizing medium jet (3) emitted from a nozzle (2) against the molten metal stream (1) at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 0.25 kg/sec, and two or more the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.Type: GrantFiled: September 11, 2002Date of Patent: June 8, 2004Assignees: Mitsui Mining & Smelting Company, Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura
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Publication number: 20040045404Abstract: A process of producing a zinc or zinc alloy powder (4) for batteries which comprises dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream (1) and striking an atomizing medium jet (3) emitted from a nozzle (2) against the molten metal stream (1) at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 0.25 kg/sec, and two or more the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.Type: ApplicationFiled: September 11, 2002Publication date: March 11, 2004Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura
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Publication number: 20030180607Abstract: A zinc alloy powder for an alkaline manganese dioxide cell, in which the average concentration of an iron component in the zinc alloy powder is 5 ppm or less, the average concentration of the iron component within a near-surface portion of the zinc alloy powder is 10 ppm or less, and the total content of the iron component in impurities present at the near-surface portion of the zinc alloy powder is 0.5 ppm or less based on the whole body of the particles, can easily suppress abnormal generation of gas at a low cost.Type: ApplicationFiled: March 4, 2003Publication date: September 25, 2003Inventors: Masamoto Sasaki, Shigeo Hirayama, Akira Oyama, Seiji Fuchino, Mitsuo Shinoda, Tadayoshi Odawara, Kouji Morita
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Patent number: 6488279Abstract: The invention provides a discharge mechanism of a sheet which can quickly and securely discharge a sheet without deformation. A discharge mechanism is provided at an end of a transfer path and discharging the paper to a tray is constituted by a pair of discharge rollers and a profiling pusher integrally rotating with the discharge roller. A sponge-like body portion and a plurality of projections, integrally formed on a peripheral surface thereof, are formed in the profiling pusher. The protrusion is brought into contact with a surface of the sheet and deformed in a profiling manner so as to allow the sheet to pass therethrough. When the rear end of the sheet leaves the nip, the deformation of the projection is restored and engaged with the rear end of the sheet, thereby forcibly pushing out the sheet.Type: GrantFiled: November 15, 2000Date of Patent: December 3, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Izumi Fukuda, Akira Oyama
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Patent number: 6428932Abstract: Zinc alloy powder for alkaline batteries containing Bi at a rate of 0.01-0.1% by weight, In at a rate of 0.01-0.1% by weight, Mg at a rate of 0.0005-0.03 % by weight and unavoidable impurities, such as Pb, Cd and Cu, capable of improving high-rate performance and being suitable for using as a cathode active substance for alkaline batteries is provided.Type: GrantFiled: May 19, 2000Date of Patent: August 6, 2002Assignee: Mitsui Mining & Smelting Company, Ltd.Inventors: Mitsuo Shinoda, Keiichi Kagawa, Seiji Fuchino, Kouji Morita, Yoshiaki Tanino, Makoto Matsuo, Akira Oyama
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Patent number: 5432312Abstract: A push-lock device has a damper mechanism 9 which includes a strip body 17; protruding portions 14, 16; a protruding portion 26; and a rubber ring 23. The strip body 17 is arranged in the moving direction of the sliding body 4 housed in the case 2 and has a meandering groove 22 formed therein. The protruding portions 14, 16 support rotatably the ends of the strip body 17. The protruding portion 26 is arranged to the sliding body 4 and engages to the meandering groove 22. The rubber ring 23 is arranged between the base 2b of the case 2 and one end of the strip body 17. The damper mechanism 9 can brake the movement of the sliding body 4 to prevent the sliding body from returning quickly from the locking position. The shock noise of the sliding body is reduced and the knob can be prevented from slipping out from the operating shaft.Type: GrantFiled: July 16, 1993Date of Patent: July 11, 1995Assignee: Alps Electric Co., Ltd.Inventors: Hiroki Otani, Akira Oyama, Masao Ohkita
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Patent number: 5356712Abstract: This invention provides magnetite particles containing a silicon component inside and also a silicon component exposed on the surface of each particle, which are improved in the properties of electrical resistance, remanent magnetization, and fluidity in a well-balanced way and suited for use principally as powdery material for magnetic toner for electrostatic copying and as black pigment powder for coating materials; and also relates to a process for producing the particles.Type: GrantFiled: September 3, 1992Date of Patent: October 18, 1994Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Masachika Hashiuchi, Akira Oyama, Tadashi Yamanishi
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Patent number: 4904979Abstract: A component assembly, for constituting an electrical part such a volume unit, having a pair of appropriate components, such as those approximate to each other in electrical characteristic, joined as a unit by a connecting plate. In use, the pair of components are separated by severing the connecting plate and are then coupled together to provide the electrical part.Type: GrantFiled: April 4, 1989Date of Patent: February 27, 1990Assignee: Alps Electric Co., Ltd.Inventors: Akira Oyama, Junichi Kuratani
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Patent number: 4845458Abstract: A component assembly, for constituting an electrical part such a volume unit, comprises a pair of appropriate components, such as those approximate to each other in electrical characteristic, joined as a unit by a connecting plate. In use, the pair of components are separated by severing the connecting plate and are then coupled together to provide the electrical part.Type: GrantFiled: March 17, 1988Date of Patent: July 4, 1989Inventors: Akira Oyama, Junichi Kuratani
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Patent number: 4613925Abstract: An assembly suitable for mounting an electronic circuit element, such as a moisture detecting element, comprises a base member having apertures therein, and a supporting member having hooked projections passing through the apertures fastening the electronic circuit element to the base member. The supporting member from which the hooked projections project is positioned under the base member. Additional projections may be provided which pass through second apertures to prevent the circuit element from being moved. The additional projections extend from the supporting member. The base member may be a part of a moisture-sensed sample.Type: GrantFiled: July 2, 1984Date of Patent: September 23, 1986Assignee: Murata Manufacturing Co., Ltd.Inventors: Akira Mohri, Akira Oyama
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Patent number: 4542366Abstract: A rotary type illuminated variable resistor wherein a light source is disposed in a case, and first and second optical guide members for guiding light from the light source are respectively disposed in a hollow shaft and a hollow knob. When the knob is rotated, the second optical guide member is also rotated, so that the rotational position of a variable resistance portion mounted on the hollow shaft can be indicated on the end face of the knob by the light.Type: GrantFiled: June 17, 1983Date of Patent: September 17, 1985Assignee: Alps Electric Co., Ltd.Inventor: Akira Oyama
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Patent number: 4523174Abstract: Disclosed is an illumination type rotary variable resistor, in which a hollow shaft rotatable and displacable in the thrust direction and is coupled to a rotatable knob, in which a photo-conductive element is disposed within the hollow shaft and the knob, in which one end of the photo-conductive element is exposed at an end surface of the knob, in which a light source is provided close to the other end of the photo-conductive element, in which a driver member is placed in contact with a forward end of the hollow shaft to cause a switch to perform its switching operation, and in which a reflex surface is formed on the driver member to reflect light from the light source towards the photo-conductive element.Type: GrantFiled: February 1, 1984Date of Patent: June 11, 1985Assignee: Alps Electric Co., Ltd.Inventor: Akira Oyama
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Patent number: 4455458Abstract: A pulse switch comprises a main disc and an auxiliary disc; with the main disc being adapted to rotate independently of the shaft of the switch and normally being held in its neutral position, and the auxiliary disc being adapted to rotate along with the shaft. A common contactor and a transfer contactor are fixed to the main disc, with the common contactor normally being held in contact with the common contact, and the transfer contactor being brought into contact with the transfer contact when the main disc has been rotated a predetermined angle. Radiating teeth are formed on the main disc to face the auxiliary disc; and crests are provided on the auxiliary disc to face the main disc and mesh with the teeth thereof. Radiating teeth are formed on the opposite side of the auxiliary disc and have the same shape as that of the teeth of the main disc; and pressing projections are provided to engage the teeth of the auxiliary disc to press the auxiliary disc against the main disc.Type: GrantFiled: August 20, 1982Date of Patent: June 19, 1984Assignee: Alps Electric Co., Ltd.Inventor: Akira Oyama
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Patent number: 4366897Abstract: A multi-application speed drop detector, for a high-speed bucket belt conveyor conveying powdery substances, that can automatically perform such functions as alarming, causing ordinary and emergency stops in accordance with the amount of speed drop of the belt conveyor from a set speed level, and eliminating the effect of an increased bucket pitch at a joint in the belt. A bucket passage detection signal produced by an electromagnetic induction sensor is used in order to avoid the ignition and explosion of the powdery substance being conveyed due to a slip of the belt.Type: GrantFiled: October 20, 1980Date of Patent: January 4, 1983Assignee: Tsubakimoto Chain Co.Inventors: Hiroaki Azuma, Hideo Kato, Akira Oyama