Patents by Inventor Yoshiaki Hara
Yoshiaki Hara 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: 6770386Abstract: A magnetic recording medium with a high recording density has a first ferromagnetic layer, a non-magnetic layer, and a second ferromagnetic layer successively deposited as the recording layer on a non-magnetic substrate. The recording layer is heated in concentric circular shapes to divide it into regions in which the magnetic interactions between the ferromagnetic layers exhibit ferromagnetism and regions that exhibit anti-ferromagnetism. The ferromagnetic regions are used for recording tracks, and the anti-ferromagnetic regions function as guard bands. In this manner track density is increased without roughening the surface of the recording medium.Type: GrantFiled: September 1, 2000Date of Patent: August 3, 2004Assignee: Fujitsu LimitedInventors: Yoshiaki Hara, Takahiko Sugawara, Yutaka Shimizu, Takuya Uzumaki, Atsushi Tanaka
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Patent number: 6562264Abstract: A method of controlling a compression injection molding machine having a movable die mounted on a movable die plate including using a pressure sensor to detect a reaction force produced at the movable die by resin being injected into a die cavity. The pressure sensor is positioned between the movable die plate and a housing supporting a toggle driving mechanism that moves the movable die plate and movable die. The output of the sensor is applied to control the injection of the resin into the die cavity or the thickness of the resin. This output can also control gate cutting or resin injection speed.Type: GrantFiled: September 7, 2000Date of Patent: May 13, 2003Assignees: Toyo Machinery & Metal Co., Ltd., Sony Disc Technology Inc.Inventors: Yoshiya Taniguchi, Nobuyuki Hirayama, Yoshiaki Hara
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Patent number: 6515436Abstract: A discharge lamp lighting apparatus includes a discharge lamp having a pair of electrodes, at least one electrode being placed on an outer surface of a discharge vessel containing an inert gas-dominated discharge agent, a high frequency generator having an output transformer and a switching apparatus, a high frequency operation detector for detecting a high frequency and outputting a high frequency operation detection signal, a controlling responsive to the high frequency operation detection signal for performing a feedback control to the switching apparatus to make the high frequency operation detection signal a first level and protecting the apparatus when the high frequency operation detection signal is changed to a second level, and a no-load detector for forcefully changing the high frequency operation detection signal supplied to the controller to the second level when detected the nonleaded state.Type: GrantFiled: March 30, 2001Date of Patent: February 4, 2003Assignee: Toshiba Lighting & Technology CorporationInventors: Masami Kobayashi, Yoshiaki Hara
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Publication number: 20020011807Abstract: A discharge lamp lighting apparatus and a lighting appliance employing the same includes a discharge lamp DDL which is provided with a pair of electrode at least one of which is placed on an outer surface of a discharge vessel 11 wherein an inert gas-dominated discharge agent is filled, a high frequency generator HFG which is provided with an output transformer T and a switching apparatus Q1, a high frequency operation detector HFD for detecting a high frequency and outputting a high frequency operation detection signal, a controller CC, to which the high frequency operation detection signal is control input, for performing a feedback control to a switching apparatus Q1 to make the high frequency operation detection signal a first level and performing protection when the high frequency operation detection signal is changed to a second level and a no-load detector NLD for forcefully changing the high frequency operation detection signal which is control supplied to the controller CC to the second level when thType: ApplicationFiled: March 30, 2001Publication date: January 31, 2002Inventors: Masami Kobayashi, Yoshiaki Hara
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Patent number: 6183235Abstract: A precision injection molding apparatus is provided with servo mechanisms in various portions of the apparatus including a resin injection portion to provide precise feedback control of resin weighing, blending, and injection of weighed and blended resin into a die cavity between closed dies, a die opening and closing portion to provide precise feedback control for driving a movable die from a spaced position into a closed position relative to a fixed die to provide the die cavity, a gate cutting portion to provide precise feedback control of gate cutting, a molding ejecting portion to provide precise feedback control of ejecting a formed molding and a molding removing portion to provide precise feedback control for removing the molding from between opened dies. Because servo mechanisms are used, there is no variation in repetitive response accuracy of motion and speed of operation can be increased in terms of cycle speeds without loss of accuracy.Type: GrantFiled: July 6, 1998Date of Patent: February 6, 2001Assignees: Toyo Machinery & Metal Co., Ltd., Sony Disc Technology Inc.Inventors: Yoshiya Taniguchi, Nobuyuki Hirayama, Yoshiaki Hara
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Patent number: 5847512Abstract: A lamp device is constituted by an assembly consisting of a holder and a lamp and can be detachably attached to an installation hole of a print board or the like. The lamp device internally includes a flickering circuit for flickering the lamp. The holder comprises first, second, and third contact members for electrically connecting a power supply terminal of the print board with the lamp, and a flickering circuit element is contained in the holder. The first contact member has contacts with the power supply terminal and with a lead of the lamp. The second contact member has contacts with another lead of the lamp and with a terminal of the flickering circuit element. The third contact member has contacts with another terminal of the flickering circuit element and the power supply terminal.Type: GrantFiled: September 30, 1997Date of Patent: December 8, 1998Assignee: Toshiba Lighting and Technology CorporationInventors: Masaharu Baba, Teiji Shimokawa, Yoshiaki Hara
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Patent number: 5766307Abstract: Method and apparatus for collecting valuable products, particularly zinc, from a zinc-containing substance such as electric furnace dust. A shaft type smelting reduction furnace has a packed bed of a carbonaceous solid reducing agent and has upper and lower tuyeres, and a zinc-containing substance is injected through tuyeres to reduce and vaporize zinc, which is directly contacted by a liquid coolant thereby forming a slurry, and the zinc product is collected from the slurry.Type: GrantFiled: September 30, 1996Date of Patent: June 16, 1998Assignee: Kawasaki Steel CorporationInventors: Shoji Miyagawa, Hiroshi Itaya, Tetsuya Fujii, Yoshiaki Hara
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Patent number: 5261733Abstract: A crawler shoe used in an endless track vehicle having metal shoes made of iron or the like. The metal shoe has two integral projections projecting toward the ground contact side of the shoe. An elastic shoe made of rubber or the like is integrally molded and fixed to the metal shoe around the projections. The elastic shoe is provided with tapered surfaces, stepped portions, or transverse grooves in areas opposite from the projections to reduce shearing stresses exerted on the end portions of the elastic shoe.Type: GrantFiled: May 28, 1992Date of Patent: November 16, 1993Assignee: The Yokohama Rubber Co., Ltd.Inventor: Yoshiaki Hara
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Patent number: 5255964Abstract: A crawler shoe used in an endless track vehicle having metal shoes made of iron or the like. The metal shoe has two integral projections projecting toward the ground contact side of the shoe. A resilient shoe made of rubber or the like is integrally molded and fixed to the metal shoe around the projections. A reinforced member is embedded in the elastic shoe between two adjacent projections.Type: GrantFiled: May 28, 1992Date of Patent: October 26, 1993Assignee: The Yokohama Rubber Co., Ltd.Inventor: Yoshiaki Hara
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Patent number: 4955126Abstract: A process for fusing a steel slab in a longitudinal direction thereof is disclosed, wherein when the steel slab is fused in the longitudinal direction at more than 500.degree. C. and at a speed of more than 300 mm/min., a surface portion of the slab including at least a lower portion of a longitudinally fused surface portion thereof is mechanically removed by cutting or grinding.Type: GrantFiled: April 20, 1989Date of Patent: September 11, 1990Assignee: Kawasaki Steel CorporationInventors: Masaru Shibata, Masayuki Onishi, Hitoshi Ohsugi, Shigeru Ogura, Masaru Washio, Hideo Kuguminato, Yoshiaki Hara
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Patent number: 4673314Abstract: A buckling fender comprising a cylindrical body molded from at least two rubber-like elastic materials differing in modulus of elasticity. At least two rubber-like elastic materials are combined such that the apparent modulus of elasticity at the central part of the cylindrical body in its axial direction becomes lower than that at both end portions.Type: GrantFiled: May 30, 1985Date of Patent: June 16, 1987Assignee: The Yokohama Rubber Co., Ltd.Inventors: Yoshiaki Hara, Masashi Wakabayashi
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Patent number: 4620102Abstract: A double grid anode is characterized in that said anode is comprised of a first cage-like anode made of a metal grid or wire gauze that permits that passage of electrons and that has an open end, a second anode which also consists of a metal grid or wire gauze located at the open end side of said first anode, a hot-cathode filament arranged around the outer periphery of said first anode, and an ion-extraction electrode which faces said anode.Type: GrantFiled: March 25, 1985Date of Patent: October 28, 1986Assignee: Seiko Instruments & Electronics Ltd.Inventors: Fumio Watanabe, Yoshiaki Hara, Masao Miyamoto, Yasuo Kusumoto, Syojiro Komaki
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Patent number: 4445113Abstract: A small acoustic device is provided with a housing, a first electrically actuated vibrating plate and a second vibrating plate. A support member cooperates with the housing for mounting the periphery of the second vibrating plate to the housing to define therewith an airtight chamber. The support member also supports the periphery of the first vibrating plate in the airtight chamber with a gap between the two vibrating plates and air chambers on either side of the second vibrating plate. In this way, the barometric pressure in the two air chambers on either side of the second vibrating plate are equivalent and the device is both waterproof and independent of ambient temperature changes.Type: GrantFiled: October 15, 1981Date of Patent: April 24, 1984Assignee: Seiko Instruments & Electronics Ltd.Inventors: Shigeo Mori, Fumikazu Murakami, Yoshiaki Hara, Ichiro Horikoshi, Susumu Fujita
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Patent number: 4412802Abstract: For the purpose of making a joint socket comprising at least two portions, namely a portion for receiving a plastic pipe end and another portion into which a rubber ring is fitted, a device for heating and softening a plastic pipe end and enlarging the radius of the softened pipe end to twice its size which includes, an inwardly slanted portion between a first outwardly slanted portion and a second outwardly slanted portion whose radius becomes smaller as it comes nearer to the front end thereof. As the result, the frictional resistance between an improved core and the radius enlarged softened pipe is reduced to a value which enables the device to be operated such that wall-thickened sockets can be made without loss of wall thickness subsequent to the radius enlarging process.Type: GrantFiled: April 1, 1981Date of Patent: November 1, 1983Assignee: Kubota Ltd.Inventors: Ryozo Ohta, Tadao Yoshizawa, Masayuki Sakaguchi, Yoshiaki Hara, Junsuke Kyomen, Ryuichi Yoneda, Hidekazu Enomoto
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Patent number: 4391532Abstract: An alarm electronic wristwatch has an electromagnetic acoustic transducer having a base plate having a plurality of upstanding projections, and a lead substrate superposed on the base plate and having a plurality of openings dimensioned to receive respective ones of the projections. The cooperation between the projections and openings enable precise positioning of the lead substrate on the base plate. The lead substrate has a set of cut-out or recessed portions in which are mounted permanent magnets. A magnetic core and excitation coil are mounted on the base plate and the terminals of the excitation coil are connected to an electrode pattern formed on the upper surface of the lead substrate. The lead substrate extends laterally of the transducer to enable electrical connection to a circuit block of the wristwatch from which drive signals may be applied to the excitation coil.Type: GrantFiled: April 21, 1981Date of Patent: July 5, 1983Assignee: Kabushiki Kaisha Daini SeikoshaInventor: Yoshiaki Hara
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Patent number: 4389123Abstract: A waterproof construction around a miniature buzzer incorporated in an electronic alarm watch depends on a gasket alone. The construction is such that the gasket can secure a resonant plate without any storage of distortion in the resonant plate. This feature makes it possible to provide the electronic alarm watch having a stable performance for acoustic emission.Type: GrantFiled: October 10, 1980Date of Patent: June 21, 1983Assignee: Kabushiki Kaisha Daini SeikoshaInventors: Ichiro Horikoshi, Fumikazu Murakami, Yoshiaki Hara, Susumu Fujita, Osamu Ide
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Patent number: 4358642Abstract: An electro-magnetic type electric acoustic transducer comprising an exciting portion consisting of a back plate mounting a permanent magnet and a magnetic core winding an exciting coil therearound, a vibrating plate arranged opposite to said exciting portion leaving a certain space, and a vibrating plate supporting member which supports the periphery of said vibrating plate, characterized in that the resonance frequency of the vibrating plate is reduced while maintaining sound pressure by providing an air hole at a part of said plate or said vibrating plate supporting member.Type: GrantFiled: December 27, 1978Date of Patent: November 9, 1982Assignee: Kabushiki Kaisha Daini SeikoshaInventors: Ichiro Horikoshi, Shigeo Mori, Fumikazu Murakami, Yoshiaki Hara, Susumu Fujita
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Patent number: 4279853Abstract: For the purpose of making a joint socket comprising at least two portions, namely a portion for receiving a plastic pipe end and another portion into which a rubber ring is fitted, a method of heating and softening a plastic pipe end and enlarging the radius of the softened pipe end to twice its size which includes, an inwardly slanted portion between a first outwardly slanted portion and a second outwardly slanted portion whose radius becomes smaller as it comes nearer to the front end thereof. As the result, the frictional resistance between an improved core and the radius enlarged softened pipe is reduced to a value which enables the method to be carried out such that wall-thickened sockets can be made without loss of wall thickness subsequent to the radius enlarging process.Type: GrantFiled: September 28, 1979Date of Patent: July 21, 1981Assignee: Kubota Ltd.Inventors: Ryozo Ohta, Tadao Yoshizawa, Masayuki Sakaguchi, Yoshiaki Hara, Junsuke Kyomen, Ryuichi Yoneda, Hidekazu Enomoto
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Patent number: 4230690Abstract: The invention presents a high-viscosity eye lotion with which lasting curve effects can be obtained with no feeling of foreign bodies to the eye as in the conventional eye salves used in treating eyes.The high-viscosity eye lotion of the invention comprises a swollen hydrated gel of a crosslinked polyvinyl alcohol and an eye-disease curative active ingredient contained therein. It is prepared by irradiating an aqueous solution of a polyvinyl alcohol with an ionizing radiation to such an extent that the polyvinyl alcohol is crosslinked to give a hydrated gel with an equilibrium swelling ratio in the range from 70 to 100 by weight and then dipping the hydrated gel in an aqueous solution of the eye-disease curative active agent.Type: GrantFiled: April 26, 1979Date of Patent: October 28, 1980Assignees: Director-General of the Agency of Industrial Science and Technology, Nihon, Tenganyaku Kenkyusho K.K.Inventors: Aizo Yamauchi, Yasuo Matsuzawa, Sadayoshi Kamiya, Keisuke Nishioka, Yoshiaki Hara, Shogo Matsushima
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Patent number: D303976Type: GrantFiled: April 8, 1987Date of Patent: October 10, 1989Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kimura, Yoshiaki Hara