Fujitsu Corporation

Ntn Corporation

N.e. Chemcat Corporation

Canon Kabushiki Kaisha

Renesas Electronics Corporation

Isuzu Motors Limited

Nippon Engelhard Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Krd Corporation

Fuuitsu Limited

Takashi Ito

Takao Nozaki

Chikara Ohki

Isao Watanabe

Makoto Sasaki

Naota Yamamoto

Kazuhiro Yagita

Shoichi Miyahara

Eiji Horikoshi

Mitsumasa Okada

Hajime Ishikawa

Hiroshi Morishita

Toshihiro Sugii

Shinpei Hijiya

Takashi Kato

Motoaki Tani

Kiyoshige Yamauchi

Hiroyoshi Ito

Takumi Fujita

Masafumi Taki

Hiroshi Horie

Katsunori Sone

Hiroyuki Miyazaki

Katsumi Kurabayashi

Masaichi Shinoda

Takamitsu Orimoto

Rinshi Sugino

Katsuaki Kato

Masaaki Mikami

Shigemitsu Matsuzawa

Masao Taguchi

Takahiro Naka

Hideki Arakawa

Masaki Egami

Kazuhiro Hirayama

Takashi Tsujimoto

Makoto Nagata

Tomoya Ogawa

Junji Sato

Takuya Ishii

Mamoru Maeda

Tsutomu Sawa

Shoji Isobe

Yukio Kosaki

Hirohide Komatsu

Osamu Usaka

Mitsuhiro Tomoeda

Tsukasa Yamakawa

Yasuo Nara

Masako Takayama

Joji Amitani

Shohei Nakamura

Mutsumi Fujita

Rei Mihara

Masayuki Nozaki

Tetsu Fukano

Akira Okayasu

Masaaki Muto

Kotaro Yamazaki

Masashi Yanagawa

Masahai Endou

Chikage Akai

Hiroshi Sugai

Masato Watanabe

Motaki Tani

Toyohiko Ota

Ichiro Kato

Masafumi Isuzu Motors Limited Taki

The lifetime estimation device for a rolling bearing includes a buildup height estimation unit operable for estimating the buildup height of the indentation from a rolling surface from the depth of an indentation or the indentation size in accordance with a predetermined rule; and a lifetime estimation unit for estimating the service life of the rolling bearing in accordance with a rule stipulated according to the relationship between the estimated buildup height of the indentation and the rate of reduction of the rolling fatigue life and a dynamic equivalent load. The lifetime estimation unit calculates the service life of the rolling bearing corresponding to the contact surface pressure.

Device for estimating service life and method for estimating service life of rolling bearing

A rolling bearing includes rolling elements between an outer race and an inner race, a resin seal ring covering an opening of at least one end of a bearing space, and a filter covering an oil hole defined in the resin seal ring for capturing foreign matter contained in lubricating oil. The filter and the resin seal ring are integrated by insert molding and are made of the same material. An annular lip portion, which is separate from the resin seal ring, is in contact with the outer race. An engaged portion on a radially inner side of the resin seal ring is engaged in a recess defined in the inner race such that, during thermal expansion of the resin seal ring, the engaged portion is engaged such that the resin seal ring is movable in a radial direction relative to the inner race.

Rolling bearing and a travel unit including rolling bearings

A rolling bearing includes rolling elements incorporated between an outer race and an inner race, a resin seal ring covering the opening of at least one end of the bearing space, and a filter covering an oil hole formed in the seal ring for capturing foreign matter contained in lubricating oil. The filter and the resin seal ring are integrated by insert molding. The filter and the seal ring are made of the same material. An annular lip portion, which is separate from the seal ring, is in contact with the outer race. An engaged portion provided on the radially inner side of the seal ring is engaged in a recess formed in the inner race such that, during thermal expansion of the seal ring, the engaged portion is engaged such that the seal ring is movable in the radial direction relative to the inner race.

A bearing assembly includes an IC tag with information to be reliably exchanged between the IC tag and an external reader/writer, and a rolling bearing including outer and inner races and rolling elements disposed between the outer and inner races. The IC tag communicates with the external reader/writer device without contacting the reader/writer device, is attached to a metal member of the rolling bearing, includes a tag antenna, and is configured so information can be exchanged between the tag antenna and a reader/writer antenna of the reader/writer device by forming a closed magnetic circuit between the tag antenna and the reader/writer antenna. The IC tag is received in a hole in a metal member surface. The tag antenna includes at least two protrusions facing the opening of the hole and arranged so magnetic fluxes leaving/entering the protrusions pass inside the edge defining the hole opening and extend outside the hole.

Bearing assembly including IC tag

A lifetime estimation device to estimate a lifetime of a rolling bearing assembly comprising inner and outer rings includes a buildup height estimation unit to estimate in accordance with a predetermined rule a buildup height of the indentation based on the inputted depth of the indentation or the inputted indentation size; and a lifetime estimation unit to estimate the lifetime of the rolling bearing assembly, the lifetime estimation unit being configured to determine a preliminary estimate of the lifetime of the rolling bearing assembly based on a dynamic equivalent load, determine a rate of reduction in a rolling fatigue life based on the buildup height of the indentation, and apply the determined rate of reduction in a rolling fatigue life to the preliminary estimate of the lifetime of the rolling bearing assembly to determine an estimate of the lifetime of the rolling bearing assembly.

Life estimation device and life estimation method for rolling bearing

In a nonvolatile memory device () provided in a semiconductor device, when data is erased based on a band-to-band tunneling scheme, supply of a boosted voltage to a memory cell (MC) to be erased is ended when a condition that an output voltage (VUCP) of a charge pump circuit () has recovered to a predetermined reference voltage is satisfied and additionally a condition that a predetermined reference time has elapsed since start of supply of the boosted voltage (VUCP) to the memory cell (MC) to be erased is satisfied.

Semiconductor device having non-volatile memory with data erase scheme

A control logic unit generates a control signal which is activated while a power supply normally operates. A charge circuit is connected to a first node on a voltage control line supplied with a voltage generated by a voltage generation circuit, so that its capacitive element is charged with electric charge. A first discharge circuit is connected to a charge storage node of the charge circuit and discharges the stored electric charge when the control signal is activated. A second discharge circuit discharges the first node when the charge storage node has a potential exceeding a predetermined potential.

Semiconductor memory device with power interruption detection and reset circuit

An outer ring and an inner ring of a rolling bearing are constituted of steel containing 0.77 to 0.85% of carbon, 0.01 to 0.25% of silicon, 0.01 to 0.35% of manganese, 0.01 to 0.15% of nickel, 3.75 to 4.25% of chromium, 4 to 4.5% of molybdenum and 0.9 to 1.1% of vanadium with the rest consisting of iron and impurities, a nitrogen-enriched layer having a nitrogen concentration of at least 0.05 mass % is formed on a region including a rolling surface, and the total of a carbon concentration and the nitrogen concentration in the nitrogen-enriched layer is at least 0.82 mass % and not more than 1.9 mass %. A DLC coating layer is arranged on a region including an outer ring contact surface.

Rolling bearing

An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.11 mass % and not more than 0.15 mass % of carbon, at least 0.1 mass % and not more than 0.25 mass % of silicon, at least 0.15 mass % and not more than 0.35 mass % of manganese, at least 3.2 mass % and not more than 3.6 mass % of nickel, at least 4 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 1.13 mass % and not more than 1.33 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.55 mass % and not more than 1.9 mass % at a depth of 0.1 mm from the surface.

Mechanical component and rolling bearing

An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.77 mass % and not more than 0.85 mass % of carbon, at least 0.01 mass % and not more than 0.25 mass % of silicon, at least 0.01 mass % and not more than 0.35 mass % of manganese, at least 0.01 mass % and not more than 0.15 mass % of nickel, at least 3.75 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 0.9 mass % and not more than 1.1 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.82 mass % and not more than 1.9 mass %.

An exposure system is configured to update control software installed on an exposure apparatus to new control software. The exposure system comprises: at least one exposure apparatus; a simulator configured to test an operation of the exposure apparatus; an output unit configured to output configuration information of the exposure apparatus, which includes information representing a temporal change of the exposure apparatus; a reflecting unit configured to reflect the temporal change of the exposure apparatus on the simulator based on the configuration information output from the output unit; and an updating unit configured to update control software installed on the simulator to new control software.

Exposure system, method of testing exposure apparatus, and method of manufacturing device

The present invention has an object of providing a single-stage production method that enables the production of ultra fine metal nanoparticles and ordered alloy nanoparticles within solution. The production method includes irradiating a solution of a salt or complex of a metal element, thereby decomposing and/or reducing the salt or complex within the solution and generating metal nanoparticles having an average particle size within a range from 0.3 to 100 nm within the solution.

Process for producing metal nanoparticle and metal nanoparticle produced by the process

It is an object of the present invention to provide a cage that can be used in a cryogenic-temperature environment or a vacuum without providing the cage with a complicated construction and without performing special treatment and a bearing using the cage. A cage made of resin has an annular main body having a plurality of pocket portions radially penetrating the main body; and a plurality of pocket members, provided on the annular main body, which hold rolling elements of a rolling bearing. The main body is a molding of a first resin composition consisting of a first resin and a solid lubricant mixed therewith; and at least a rolling element-retaining surface of each of the pocket members is made of a second resin composition containing fluorocarbon resin as a main component thereof. The molding of the first resin composition has a tensile strength of not less than 30 MPa and a heat-resistant temperature of not less than 200&#xb0; C. The second resin composition is a fluorocarbon resin composition. The rolling bearing is constructed of an inner ring, an outer ring, the rolling elements interposed between the inner ring and the outer ring, and the cage. The rolling bearing is used for a turbopump, of a rocket engine, which uses a liquid fuel.

Resin-made cage and bearing

A method of forming a conductive pattern can form a conductive pattern where the aspect ratio of the height to the width is high with favorable electrical connectivity. The method includes a process that forms a first resist layer, which exposes formation positions of a conductive pattern, on a formation surface on which the conductive pattern is to be formed, a process that forms a first stage conductive pattern by carrying out plating at the positions exposed from the first resist layer, a process that forms a first stage protective film which protects the first stage conductive pattern, a process that grinds flat a surface of the first stage protective film and end surfaces of the first stage conductive pattern, a process that forms a second resist layer, which exposes parts of the end surfaces of the first stage conductive pattern more narrowly than the first stage conductive pattern, on the surface of the first stage protective film and the end surfaces of the first stage conductive pattern, and a process that forms a second stage conductive pattern by carrying out plating at the positions on the end surfaces of the first stage conductive pattern that are exposed from the second resist layer.

Method of forming a conductive pattern

A thin film magnetic head having a high write-in accuracy can be produced by suppressing a magnetic field leak between upper and lower magnetic poles. The method of producing the thin film magnetic head, in which a head substrate, magnetoresistance effect element, lower magnetic pole, write gap layer and an upper magnetic pole are formed in this order, has the lower magnetic pole patterned with a larger width than that of the upper magnetic pole in a write magnetic pole after the lower magnetic pole is formed. An insulation layer is formed in the same layer as the lower magnetic pole such that the insulation layer is flattened with the lower magnetic pole. The upper magnetic pole is formed on a surface of the write gap layer after the write gap layer is formed, and a protrusion of the lower magnetic pole is removed from a side face thereof.

Thin film magnetic head having sectional shape of write magnetic pole formed as a trapezoid

Growing community of inventors

Kawasaki, Japan

Takashi Ito