Kubota Corporation

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Yasuo Nakata

Toshihiko Takemura

Yoshitaka Matsubara

Ryohei Sumiyoshi

Hiroyuki Anami

Yoshihiro Ueda

Toyoaki Yasuda

Masanori Fujino

Naoya Muramoto

Seiichi Ishiizumi

Kazuo Hirata

Kenji Mitsui

Takeshi Ikumura

Yuuki Takano

Youhei Kawano

Yusuke Kawai

Junta Kuwae

Hiroyuki Miki

Takeshi Kajimoto

Masayoshi Nakamura

Genichi Funabashi

Teruo Kunizawa

Kenji Ikeda

Akihiko Nishioka

Tomoaki Miyake

Fumiki Sato

Kenzo Koga

Siro Sugiyama

Masanori Harui

Hajime Shikiya

Eisaku Shinohara

Yuji Tsutsui

Motoki Sunada

Nobuo Higashino

Akinori Nakashima

A protective device that detects an abnormal current in a driving circuit for driving a speaker includes a sound level detector, a current level detector, and a determination section. The sound level detector detects a sound level of an audio signal output to the driving circuit. The current level detector detects a current level of a current flowing in the driving circuit from a power source. The determination section generates, based on a detection signal of the sound level and a detection signal of the current level, a protection command signal when the current level larger than a second threshold is detected when the sound level of the audio signal is smaller than a first threshold.

Protective device

A loader work machine is disclosed in which a base portion of each of right/left arms () is received by an arm support portion () of a first lift link () and pivotally supported by a first arm shaft (), and a hydraulic pipe arrangement () connected to a hydraulic actuator () extend through an support frame () from inside to outside of its inner wall (), and toward an arm (). The base portion of the arm () is supported to the arm support portion () at a position adjacent a link outer wall () in a transverse direction so that a hose accommodation space () is formed between a link inner wall () and an internal side face of the base portion of the arm (). The hydraulic pipe arrangement () runs frontward of the first arm shaft () and a first link shaft (), and is disposed in the hose accommodation space ().

Loader work machine

Positional relationship among the first link support shaft (), the second link support shaft (), the first arm support shaft () and the second arm support shaft () is set such that an upper portion of the first lift link () comes into substantial agreement with a rear end of the machine body (), when the upper free end of the first lift link () is pivoted maximally rearward in the course of transition of the arm () from a lowermost state realized lifting down the arm () to an uppermost state realized by lifting up the arm ().

A hood for a loader work machine is provided at the rear end of the frame body and downwardly of the transverse connecting member between the pair of right/left support frame members. The transverse connecting member includes a front wall plate and an upper wall plate projecting rearward from an upper end of the front wall plate. The upper wall plate of the transverse connecting member is disposed more downwardly than the vertical center of the cabin. A rear portion of the upper wall plate is inclined downwardly rearward. A hood upper wall is provided for covering a rear upper side between the pair of right/left support frame members. A front end portion of the hood upper wall is connected to the rear portion of the upper wall plate of the transverse connecting member. The hood upper wall is inclined downwardly rearward in correspondence with the rear portion of the upper wall plate.

A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector () in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit () for outputting at least a pair of arithmetic signals from the output of the photoelectric detector (); a phase comparator () for detecting a phase difference between the output signals of the arithmetic unit (); an absolute value detector () for detecting an absolute value of the output signal of the phase comparator (); a level detector () for generating a signal that indicates whether or not a convergence position of the light spot is located off an information track by detecting a predetermined number of times or more the output signal of the absolute value detector () has become larger than a predetermined value; a sensitivity detector () for detecting and outputting the sensitivity of the level detector () by observing the output signal of the level detector (); and a controller () for adjusting the detection conditions of the level detector () so that the output of the sensitivity detector () is a predetermined value.

Tracking apparatus for optical information reproduction apparatus

In a signal reproducing device, for securing the stability in the steady state while enhancing the response of automatic gain control, a variable gain amplifieradjusts the amplitude of a reproduction signal outputted from a head amplifier. A gain control sectionincreases/decreases the gain in the variable gain amplifierby a predetermined change amount according to the large-small relationship of the comparison result outputted from a comparator. The gain change amount control circuitcontrols the change amount of the gain in the gain control sectionaccording to the frequency of inversion of the large-small relationship of the comparison result outputted from the comparator

Automatic gain control circuit and signal reproducing device

An off-track duty measurement unit measures off-track detection sensitivity on the basis of an off-track signal, and track cross cycle information that is obtained from a tracking error signal measured by a track cross cycle measurement unit, whereby off-track detection sensitivity can be measured more accurately. Further, an off-track detection sensitivity controller changes the detection sensitivity of an off-track signal detector according to the obtained off-track detection sensitivity, whereby the off-track sensitivity can be kept constant for various kinds of discs, and accordingly, stabilities of off-track detection, track pull-in judgement, and track jumping can be secured.

Method and apparatus for measuring off-track detection sensitivity

To increase the vibration resistance of an optical disk device with respect to vibrations in the focus direction. More specifically, an optical disk device is provided with a multiplication means for generating a focus vibration component FC from the focus error signal FE, a multiplication means for generating a tracking vibration component TC from the tracking error signal TE, an adder for adding the focus vibration components FC and TC, and a low-pass filter for extracting the vibration component VC from the added results. Thus, the vibration component VC is extracted considering not only vibrations in the tracking direction but also vibrations in the focus direction, so that vibrations acting on the device can be more accurately detected, and vibration resistance is increased.

Optical disk device, semiconductor integrated circuit, pickup control method and vibration component detection method

A swivel type working vehicle having a turntable ( ) with a rear hood ( ) covering an engine ( ) and a side hood ( ) covering hydraulic equipment. The rear hood ( ) includes a pivot device ( ) disposed in an upper front end region thereof and having a pivot axis extending transversely of a vehicle body. The rear hood is pivotable by the pivot device between a closed position covering the engine and an open position exposing the engine. The side hood ( ) includes a pivot mechanism ( ) disposed in a lower front end region thereof and having a pivot axis extending transversely of the vehicle body. The side hood being pivotable by the pivot mechanism between a closed position covering the hydraulic equipment and an open position exposing the hydraulic equipment.

Swivel type working vehicle

Backhoe

A backhoe ( ) includes an upper structure ( ) supported by a traveling device ( ) to be rotatable about a vertical swivel axis (X). The upper structure ( ) carries an excavator ( ) and a cab ( ) and has a rear edge ( A) formed arcuate about the swivel axis (X) in plan view. The cab ( ) defines an opening ( ) with a door ( ) attached through hinges ( ). The door ( ) is pivotable about a vertical open/close axis (Y) of hinges ( ). The hinges ( ) are arranged on a rear edge opening ( ). Each hinge ( ) includes a pair of hinges ( A and B) which are bent to place the axis (Y) forwardly of the rear end of door ( ). Consequently, when the door ( ) is set to a fully open position, the free end of door ( ) is displaced to a position forwardly of the rear edge ( A) of upper structure ( ).

A hood for enclosing a radiator and an engine has a hood grille formed in a front surface of the hood. The hood grille includes a front wall, and right and left side walls extending from opposite sides of the front wall. The front wall defines intake openings for drawing in air for the radiator. The right and left side walls include bent portions bent substantially at right angles to the front wall. Opposite end regions thereof are secured to the right and left side walls by fixing devices. Hood grille netting extends over an entire area of the intake openings and covers at least parts of the right and left side walls. The opposite end regions of the hood grille netting are bent to correspond to the bent portions. The hood grille netting is secured to the hood grille by bolts and spacers to define spaces between the hood grille netting and the right and left side walls. These spaces communicate with the intake openings.

Hood having intake openings for drawing air for a radiator and an engine

An agricultural tractor with a driver's cabin, in which the cabin is supported by a safety frame which is in turn supported by an axle case.

Agricultural tractor with a driver's cabin

A wheel drive structure for an agricultural tractor comprising a drive case housing a differential mechanism and reduction mechanisms to transmit power from said differential mechanism to wheels. The drive case comprises first and second case portions and said first case portion is made of a structural steel pipe.

Growing community of inventors

Osaka, Japan

Yasuo Nakata