Nissan Motor Company Limited

Namiki Precision Jewel Co., Ltd.

Nec Corporation

Sony Corporation

Nippon Light Metal Company, Ltd.

Namiki Seimitsu Houseki Kabushiki Kaisha

Adamant Kogyo Co., Ltd.

The Tokyo Electric Power Company, Incorporated

Adamant Co., Ltd.

Adamant Kogyo, Ltd.

Adamant Namiki Precision Jewel Co., Ltd.

Yoshihiro Konno

Masaru Sasaki

Hiroshi Kume

Hideyori Sakuragi

Takahiro Watanabe

Akira Yamaguchi

Toshio Takeshita

Atsushi Takahashi

Yoichi Miyajima

Naoki Shimizu

Tamon Ikeda

Hajime Katou

Hiroyuki Yuasa

Shoichi Shintani

Kiyoshi Kurosawa

Eiji Anzai

Michihito Kobayashi

Nobutatsu Takahashi

Yunosuke Yamada

Seiya Amatatsu

Yoshihisa Tsuchida

Hideki Hagiwara

Hiroaki Itoh

Kiyoshi Miyamori

Naoto Hosoya

Tomohiro Tsumura

Hidenobu Kawai

Tsugio Sameshima

Kazuhiro Kitagawa

Kazuaki Ikegai

Tomoyuki Nakao

Yuuki Murayama

Yuki Murayama

Yoshiharu Hiroki

Kuniaki Ozono

Shingo Donkai

Masato Tatenuma

Yukihiko Mikami

Shigeaki Aoki

Eiji c/o Nikkei Research And Devpt Center Anzai

A vehicle suspension structure includes a suspension arm and a ball joint. The suspension arm is connected between a suspension member and a vehicle-widthwise outer side end connected to a vehicle wheel. The ball joint connects the suspension arm and the vehicle wheel. When the vehicle receives an impact in the longitudinal direction, a socket of the ball joint pivots relative to a ball as the suspension arm deforms, and a flange portion on an open side of the socket interferes with a stud shaft of the ball joint. The interference causes the flange portion to deform and the ball to come out of the socket to undo the link with the vehicle wheel by the ball joint. Upon becoming unlinked, the vehicle wheel moves toward the vehicle-widthwise outer side and interference with the rear vehicle body is suppressed to limit deformation of the vehicle body.

Suspension structure for vehicle

Current measuring device keeps fluctuation range for the ratio error in output within &#xb1;0.5% range and simplified assembly thereof. The measuring device includes at least a light entrance and exit, optical fiber for a sensor, Faraday rotator, first and second &#xbc;-wavelength plates, polarization separator, light source, and signal-processing-circuit including a photoelectric-conversion-element. Optical fiber for a sensor has birefringence and includes one end wherein two circularly polarized light-beams having different rotation enter directions and another end reflects circularly polarized light-beams entered. Phase difference of two linearly polarized light-beams in the round-trip light path between two &#xbc;-wavelength plates is compensated, and the Faraday rotational angle when the Faraday rotator is magnetically saturated set to 22.5&#xb0;+&#x3b1;&#xb0; so fluctuation range for ratio error in measured value of the current to be measured is set in range, &#xb1;0.5%. The crystal-axes on optical faces of two &#xbc;-wavelength plates are set to be perpendicular or same direction.

Electric current measuring apparatus

Disclosed is an optical fiber birefringence compensation mirror. Also disclosed is a current sensor wherein vibration resistance has been increased due to the optical connection of the optical fiber birefringence compensation mirror. The optical fiber birefringence compensation mirror includes: an optical fiber, a birefringence element, a lens, a magnet, a Faraday rotator, and a mirror. From the light incidence/emission end surface of the optical fiber, the birefringence element, Faraday rotator, and mirror are arranged in said order. Light comes in from the optical fiber, and is separated into two linearly polarised lights by the birefringence element. The polarisation planes of the two linearly polarised lights are rotated by the Faraday rotator, and the two linearly polarised lights are point-symmetrically reflected at one point by the mirror, then again rotated by the Faraday rotator, then re-combined into one light by the birefringence element and made to enter the optical fiber.

Optical fibre birefringence compensation mirror and current sensor

A two-core optical fiber magnetic field sensor is configured from at least a light incidence/emission unit; a lens; a magnetic garnet; and a reflector, wherein the lens and the magnetic garnet are disposed between the light incidence/emission end of the light incidence/emission unit and the reflector; a light beam is emitted from one optical fiber; the light beam is reflected by the reflector after being transmitted through the lens and the magnetic garnet; the light beam is transmitted again through the magnetic garnet and the lens after the reflection; and incident on the other optical fiber, the light beam is emitted again from the other optical fiber, and reflected by the reflector after being transmitted through the lens and the magnetic garnet; and the light beam is transmitted again through the magnetic garnet and the lens after the reflection and incident again on the one optical fiber.

Two-core optical fiber magnetic field sensor

An electric measuring apparatus is constructed in such a way as to include a signal processing circuit equipped with at least a polarized light separating unit, Faraday rotators, a light source, a photoelectric conversion element, and optical fibers for a sensor. The optical fibers for the sensor are placed around the periphery of an electrical conductor through which electric current to be measured flows. Furthermore, the rotation angle of each Faraday rotator at the time when the magnetism of each Faraday rotator is saturated is set to 22.5&#xb0;+&#x3b1;&#xb0; at a temperature of 23&#xb0; C., thereby changing the rotation angle of each Faraday rotator by &#x3b1;&#xb0; from 22.5&#xb0;.

A battery and an electronic apparatus are disclosed by which it can be discriminated with a simple configuration whether or not the battery is of a thin type. The battery is configured such that a wall portion for discrimination of a battery characteristic which is swollen in a lengthwise direction and connects to a connector section is formed at a location of one of end faces positioned rather near to an end portion in a widthwise direction of a case of the battery.

Battery and electronic apparatus

Provided is a reflective optical circulator capable of improving characteristics by preventing the occurrence of PDL and non-uniformity of insertion losses of reciprocating optical paths. The reflective optical circulator includes: an optical element unit having a first polarization separating element, a 45&#xb0; non-reciprocal polarization plane rotating element, a phase element for rotating a polarization plane of an incident light by 90&#xb0;, and a second polarization separating element; a light incidence/emission unit; a lens; and a reflector. All waveguides are disposed at an equivalent distance from a central point, and a shift amount of an extraordinary ray in the second polarization separating element is set to be larger than a shift amount of an extraordinary ray in the first polarization separating element. In addition, the phase element is constructed with two phase optical elements, and only one polarization component is allowed to transmit through the two phase optical elements.

Reflective optical circulator

A connecting structure includes a hollow member or a half hollow member including two side portions opposed apart to each other; a collar; and a bolt. The collar includes two contact surfaces at both ends of the collar. The two contact surfaces are adapted to respectively abut on the two side portions between the two side portions. At least one of the two contact surfaces is formed with a receiving portion for caulking. Moreover, the collar is formed with a bolt-hole passing through the two contact surfaces. The collar is disposed between the two side portions, and is caulked with the hollow member or half hollow member at a caulked portion formed from at least one of the two side portions toward the receiving portion. The bolt is adapted to pass through the two side portions and the bolt-hole to connect the hollow member or half hollow member with another member.

Connecting structure for hollow member or half hollow member

A suspension structure is provided having a shock absorber for dampening the vibration from a wheel and a stabilizer for suppressing the up and down strokes in opposite phases generated from opposing wheels on a vehicle. The end portion of the stabilizer is connected to the lower end portion of the shock absorber.

Suspension structure

A semiconductor integrated circuit design method is a method for designing a semiconductor integrated circuit having a main circuit as well as the spare cell including a scan flip-flop. In the method, a net list is received, which indicates a connection relationship among circuits and their positions in a semiconductor integrated circuit. An observation point is provided in the main circuit shown in the received net list, and then an observation net list in which the observation point is provided, is created. Thereafter, the observation point is associated with a spare cell placed in the neighborhood of the observation point based on the created observation net list. A scan net list is created, in which the observation point and the scan flip-flop included in the spare cell associated with the observation point are connected to each other by wiring.

Semiconductor integrated circuit design apparatus and semiconductor integrated circuit design method

An apparatus that edits a test pattern used in a circuit function test includes a generator that generates a regular pattern that includes a plurality of unit patterns, by inserting a redundant pattern into a test pattern, and a pattern number reduction editor that defines the regular pattern as one unit pattern in the circuit function test.

Circuit test pattern edition apparatus, circuit test pattern editing method, and signal-bearing medium embodying a program of circuit test pattern edition

A simple-structure, small-size, inexpensive optical isolator mounted in an amplifier. The PMD and PDL are reduced to desired numerical levels to improve the characteristics. The optical isolator is composed of two double refraction elements, a 45 DEG Faraday rotator, a magnet, a lens, and a total reflection member. The directions of crystal axes of the two double refraction elements and the direction of the rotation of the Faraday rotator are appropriately set. Therefore, going-returning optical paths where incident unpolarized light is separated into ordinary light and extraordinary light, totally reflected by a total reflection member, and outputted are formed. The direction of the crystal axis with respect to the direction of the normal on the element surface of either of the two double refraction elements and the thickness in the direction of the normal on the element surface are corrected.

Optical isolator and optical device

A method of producing a forged part includes holding a material by a jig, upsetting the material, held by the jig, to a predetermined length by a pair of upsetting dies disposed on both ends of the material, while pressing the upsetting dies on the material, so as to produce large-diameter portions at the respective axial ends of the material. Next, a bending operation and a forging operation are made to the upset material, in that order. When forging, a direction, in which the material is forged, is set, so that a burr generated on the material by upsetting is included in a burr generated on the material by forging. Next, a finish-machining operation is made to the forged material to remove the burr left on the outer periphery of the material after forging. Thereafter, the finish-machined material is drilled to form bush-mounting holes in the large-diameter portions.

Method of producing forged part and method of producing suspension arm for automotive vehicles

A current measuring apparatus comprises a current detection unitand a photoelectric converter. The current detection unitcomprises an optical fiber sensorextended or looped around a conductor. A reflective filmis attached to one end of the sensorso that light can be reflected by the end of the sensor. The current detection unitfurther comprises a first Faraday element, a light-transmitting birefringent member, a first optical fiber, a second optical fiberand a lens. The Faraday elementrotates a plane of polarization of the incident light through about 22.5&#xb0;. The birefringent memberfunctions to separate the light emitted from the sensorinto an ordinary ray Land an extraordinary ray Lthat are orthogonal to each other, and to transmit linearly polarized light Lemitted from a light source. The lensis provided between the elementand the birefringent member. Focal points of the lens are formed at core portions of an input endof the sensorand an end faceof the first optical fiber. With this arrangement, the number of components is reduced and the apparatus is reduced in size.

Current measuring device

An aluminum-based metal link including a shaft portion extending along a first axis, a bushing mount portion having a second axis perpendicular to the first axis, and a weld joint portion in which one of the opposed axial end portions of the shaft portion and the bushing mount portion are welded together by friction stir welding (FSW). The weld joint portion has a hole that has a third axis angularly offset from the second axis about the first axis and is formed upon termination of the FSW.

Aluminum-based metal link for vehicles and a method for producing same

Growing community of inventors

Tokyo, Japan

Yoshihiro Konno