Sumitomo Electric Industries, Limited

Sony Corporation

Matsushita Electric Industrial Co., Ltd.

Kubota Corporation

Panasonic Corporation

Other

Sanyo Electric Co., Ltd.

Keihin Corporation

Research Development Corporation of Japan

E.i. Dupont De Nemours and Company

The Tokyo Electric Power Company, Incorporated

Atsugi Unisia Corp.

Atsugi Motor Parts Company, Limited

Kabushiki Kaisha Kubota

Director General of National Research Institute for Metals of Science

Kenichi Sato

Takeshi Hikata

Hidehito Mukai

Nobuhiro Shibuta

Kazunobu Chiba

Yuichi Arisaka

Hironori Kikuchi

Kengo Ohkura

Jun Fujikami

Takeshi Kato

Munetsugu Ueyama

Nobuhiro Saga

Yukari Yamada

Kazuya Ohmatsu

Nobuhiro Iwai

Masaru Nakata

Satoshi Takano

Hideo Ishii

Tsukushi Hara

Shota Nagasawa

Yoshio Koyanagi

Kenji Miyazaki

Hisato Katoh

Tomoaki Nishikido

Noriyoshi Satoh

Akira Akabane

Nobushige Ichikawa

Minoru Yokota

Tatsuya Sano

Hisao Mukai

Daisuke Inaba

Mitsuhiko Obe

Yasuhiro Okada

Daigo Imano

Yasunori Komukai

Shuji Hahakura

Hiroaki Ohmori

Tomohiro Okumura

Junta Kuwae

Hiroshi Miyake

Noriyuki Yoshida

Norihito Tsukahara

Hiroaki Fujiwara

Hiroshi Amano

Osamu Yamazaki

Satoshi Masuda

Yoshihiko Misawa

Kazuhiko Hayashi

Toshiharu Kobayashi

Noriki Hayashi

Takaaki Higashida

Mitsuo Saitoh

George Elias Zahr

Yasuhiro Iida

Keishiro Nishi

Hirofumi Kondo

Norihisa Shirota

Takato Masuda

Makito Seno

Mitsunori Yokomakura

Yasunobu Nakatani

Daisuke Suetsugu

Shinji Yamamoto

Kenichi Yamamoto

Tadashi Kimura

Takafumi Okuma

Genichi Funabashi

Hidetoshi Honda

Mitsumasa Oku

Megumi Sawai

Shigeru Okuda

Yutaka Harada

Koichi Shimizu

Taizou Takeuchi

Seiichi Takahashi

Takashi Akiguchi

Munekazu Nishihara

Daisuke Kobayashi

Akiyoshi Ono

Nobuaki Tanaka

Tatsuyuki Kashimoto

Youji Sugiura

Jota Ito

Yasunobu Yamaue

Hisato Kato

Yoichiro Yashiro

Takeshi Imamura

Kazuo Ikegami

Taketoshi Sato

Tateo Toyama

Tatsuyuki Matsuya

Yukinari Takahashi

Futao Kaneko

Takahiro Kawakami

Kazuhisa Yamauchi

Yasumi Sato

Isamu Morimoto

Toshio Harima

Eisaku Shinohara

Tatsuya Kawamura

The present invention is transportable economically in a flat state, and easy to attach and detach, and can provide a curved surface simply while maintaining decoration and strength without craftsmanship and absorb sound. Slits are provided on a rectangular board panel comprising two or more layers of a hard material and a soft material. Two or more layers comprising a hard material and a soft material are laminated on a rectangular board panel, and slits having a length of &#xbd; to &#xbe; of the vertical side are provided thereto. The use of slits makes formation of curved surfaces easy. Since there is no need to reinforce the outside to maintain the strength thereof, the board panel can be removed easily. Even if an external pressure is applied to the board panel, the flexibility of the hard material divided by the slits and the elastic characteristic of the soft material cause the pressure to be dispersed and absorbed, and sound to be absorbed.

Board panel

The present invention is transportable economically in a flat state, and easy to attach and detach, and can provide a curved surface simply while maintaining decoration and strength without craftsmanship. Slits are provided on a rectangular board panel comprising two or more layers of a hard material and a soft material. Two or more layers comprising a hard material and a soft material are laminated on a rectangular board panel, and slits having a length of &#xbd; to &#xbe; of the vertical side are provided thereto. The use of slits makes formation of curved surfaces easy. Since there is no need to reinforce the outside to maintain the strength thereof, the board panel can be removed easily. Even if in external pressure is applied to the board panel, the flexibility of the hard material divided by the slits and the elastic characteristic of the soft material cause the pressure to be dispersed and absorbed.

Provided is a simple secondary battery tester that obtains, without applying an AC signal for determination based on capacitance, the capacitance of a secondary battery from time characteristics of a current flowing to the secondary battery and a terminal voltage and determines whether the secondary battery is degraded based on the capacitance thus obtained.

Secondary battery tester

Tractor

A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.

Cabin for a work vehicle

There is provided an antenna element capable of implementing miniaturization, acquisition of a high gain, and broadening of a band and coping with multiple bands. The antenna element includes a first antenna elementhaving shape of a box (a rectangular-parallelepiped shape) in which a first conductor plate, a second conductor plate, and a third conductor plateare arranged so as to define at least three surfaces of a substantial rectangular parallelepiped and in which electric power is fed from a substantial corner of a lower circuit board (a ground plate)to the first conductor plate; and a second antenna elementhaving shape of a box (a rectangular-parallelepiped shape) in which a fourth conductor plate, a fifth conductor plate, and a sixth conductor plateare arranged so as to define at least three surfaces of a substantial rectangular parallelepiped, the fourth conductor platebeing connected by way of a resonance circuitto the first antenna elementat a portion thereof apart from a feeding point of the first antenna element

Antenna element and portable radio

There are provided an antenna element and a portable radio that enable miniaturization, acquisition of a high gain, and broadening of a band and that copies compatible with multiple bands. A rectangular-parallelepiped-shaped antenna element is formed by folding two or more faces of a board-shaped monopole element having an rectangular shape so that the antenna element has a substantially rectangular first conductor platedisposed in proximity to a hingewhile arranged at a predetermined space S from a lower circuit board (ground plate), a substantially rectangular second conductor platethat shares a widthwise one side of the first conductor plateand that is arranged while bent to an angle of about 90&#xb0; with respect to the first conductor plate, and a substantially rectangular third conductor platethat shares another widthwise side of the second conductor plateopposing the side shared by the first conductor plateand the second conductor plateand that is arranged at an angle of about 90&#xb0; so as to oppose the first conductor plate

Disclosed is a mobile wireless device, which has an antenna structure for feeding a hinge core with an electric power and which can be adapted to wireless communications of low-frequency bands without enlarging a casing itself. In this wireless device, an upper casing () equipped with a first circuit substrate () and a lower casing () equipped with a second circuit substrate () having a wireless unit () mounted thereon are connected to open and close through a hinge unit having a conductive hinge (). A feeding unit () mounted in the upper casing () feeds the conductive hinge () with an electric power from the first circuit substrate (). A cellular antenna () mounted in the lower casing () is connected with the ground pattern of the second circuit substrate () at the position, where an extension () is separated along the axial direction of the conductive hinge () from a capacity coupling unit () arranged to confront a portion of the conductive hinge () and coupled capacitively to a portion of the conductive hinge (), thereby to short-circuit the capacity coupling unit () and the ground pattern.

Mobile wireless device

There is provided a mobile wireless device capable of preventing antenna characteristics from degrading by feeding electric power at a position hardly affected by a human body such as a hand or other body part. In the mobile wireless device, a first circuit board () is provided on a first chassis () and has a ground layer; a second circuit board () is provided on a second chassis () and has a ground layer. A ground terminal of a wireless portion () is connected to the ground layer of the first circuit board () at the same voltage level and is also electrically connected through the wireless portion () to a matching circuit (). The ground layer of the second circuit board () is electrically connected to a hinge conducting portion () by electrostatic capacitance coupling. The hinge conducting portion () is connected through a third conduction portion () to a board connection portion () and feeds power to the wireless portion through the matching circuit (). This enables the ground layer of the first circuit board (), the third conduction portion (), the hinge conducting portion (), and the ground layer of the second circuit board () to function as an antenna resonating at a predetermined resonant frequency.

A challenge to be met by the present invention is to provide a radio communication apparatus that enables prevention of a drop in antenna gain, which would otherwise arise when an apparatus main body is placed on a metal plate, such as a metallic desk, at low cost. A second antenna element () is placed at such a position where resonance arises at a frequency band of a first antenna element () and connected to a ground pattern of a circuit board () by way of an antenna grounding unit () connected exclusively to a radio system unit (). Further, a reactance unit () of the antenna grounding unit () performs regulation such that the second antenna element () is electromagnetically coupled with the metal plate, to thus cause resonance at a predetermined frequency, when the apparatus main body is placed on the metal plate and that the resonance frequency becomes a frequency band of the first antenna element (). When the apparatus main body is placed on the metal plate while a radio signal is being transmitted at the frequency band of the first antenna element (), the second antenna element () can thereby be used as a passive element, so that occurrence of a drop in gain of the first antenna element () can be prevented.

Radio communication apparatus

Provided is a portable communication device, specifically a portable wireless device which is thin while maintaining excellent reception sensitivity even when the device is laid on a metal top panel. As such device (), a foldable portable cellular phone () is provided with a battery box () opened on the side of a rear surface (), and a circuit board () having an antenna power feed point () is arranged inside a lower case (). The battery box () is covered with a battery cover section () removably attached to the lower case (). The battery cover section () is formed of a member having conductivity, and attached to the lower case () by having contact point members () in between for carrying a current to a reinforcing conductive plate () which is to be a GND layer of the circuit board (). The battery cover section () attached to the lower case () is electrically connected to the reinforcing conductive plate () by making the battery cover section abut to contact point members ().

Portable wireless device

A foldable portable radio device adapted to a plurality of frequency bands has a good antenna performance in all the use frequency bands even in both open and folded states. In the foldable portable radio device, a control section () controls switching means () to connect a sub-matching circuit () and a first circuit element () when a first use frequency band is used and further when the foldable portable radio device is in the open state and to connect the sub-matching circuit () and a second circuit element () when a first use frequency band is used and further when the foldable portable radio device is in the closed state, or when a second use frequency band is used irrespective of the open/closed state of the foldable portable radio device.

Portable and foldable radio terminal with multiple frequency antenna

A problem of the invention is to provide a small-size communication terminal apparatus capable of reducing an SAR and also widening a band of an antenna and further achieving thinning. The communication terminal apparatus has a substrate () disposed inside a housing, a power feeding part () disposed in the substrate (), a monopole antenna () having plural elements of multi-frequency sharing, the monopole antenna for feeding power by electrically connecting one end to the power feeding part, and a ground wire () electrically connected to a wireless ground of the substrate (), and the monopole antenna () having the plural elements is arranged in a direction vertical to a surface of the substrate () and in a back surface direction of the housing so as to be opposed to a human body at the time of a call.

Communication terminal apparatus

A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof; an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.

An electromagnetic fuel injection valve is provided in which a cylindrical magnetic body is welded to a valve seat member having at the rear end thereof a tubular press-fit portion press-fitted into a front portion of the cylindrical magnetic body, a valve body is housed in the valve seat member while being spring-biased in a direction that seats the valve body on a valve seat, and a movable core facing a fixed core is coaxially connected to the valve body, wherein the valve seat member () includes the tubular press-fit portion (), a large diameter portion () that has substantially the same outer diameter as the outer diameter of the cylindrical magnetic body (), and an annular shoulder portion () that is formed as a flat face perpendicular to the outer peripheral face of the tubular press-fit portion () and provides a connection between the tubular press-fit portion () and the large diameter portion (), an annular abutment receiving face () at the front end of the cylindrical magnetic body () is formed so as to define a right angle relative to the inner peripheral face of the cylindrical magnetic body (), the annular abutment receiving face () abutting against the annular shoulder portion () over substantially the entire face, and the front end of the cylindrical magnetic body () and the abutment portion of the valve seat member () are welded together along the entire periphery. This enables the thickness of the cylindrical magnetic body to be reduced, thus making it small and improving the responsiveness.

Electromagnetic fuel injection valve

Growing community of inventors

Miyagi, Japan

Kenichi Sato