Denso Corporation

Makita Corporation

Denso Airs Corporation

Koji Tanaka

Makoto Taniguchi

Tadatoshi Asada

Yoshinori Shibata

Katsuhiko Sasaki

Wataru Suzuki

Masahiko Inai

Tomoya Okuno

Toshiyo Ogino

Yuki Miwa

Toru Aoyama

Tomofumi Kawai

Hiroaki Ishikawa

Akihito Hara

Takeshi Sada

Takatoshi Inokuchi

Makoto Yoshino

Masahiko Miura

Yasuhiro Takase

Kinji Ochiai

Manabu Suzuki

Takeshi Hishikawa

Tooru Aoyama

Satoshi Suzuki

Television receiver with radio

A grease discharge device includes a motor, a plunger, a grease supply unit, a pump, a check valve, and a relief valve. The plunger reciprocates by driving of the motor. The grease supply unit supplies grease to a forward movement side with respect to a backward movement side dead center of the plunger. The pump performs a discharge behavior of the grease by the reciprocation of the plunger. The check valve is disposed at a downstream side with respect to a forward movement side dead center of the plunger in a discharge path of the grease inside the pump. The relief valve is disposed between a supply portion of the grease by the grease supply unit and the check valve. The relief valve releases the grease inside the discharge path to the grease supply unit side according to a pressure rise inside the discharge path.

Grease discharge device

Grease gun

A saw blade protector for a cutting device having a table for placing thereon a workpiece, a saw blade protruding from an upper surface of the table, and a riving knife disposed in front of the saw blade in a moving direction of the workpiece for cutting the workpiece and positioned in line with the saw blade. The saw blade protector includes a guard plate constructed to cover the saw blade, a holding frame constructed to be mounted on an upper portion of the riving knife and to be able to support the guard plate, and an adjusting device constructed to be able to adjust a position of the holding frame relative to the upper surface of the table.

Saw blade protectors

A support structure for a splitter of a cutting tool includes a lock device and a moving device. The lock device can lock and unlock the splitter at a storage position. The moving device can move the splitter from the storage position to an ejected position, in which a part of the splitter extends above an upper surface of a table of the cutting tool, when the lock device unlocks the splitter at the storage position.

Structures for supporting splitters of cutting tools

A cutting device includes a lock device for locking and unlocking a cover against a cover support. The cover includes a first cover removably mounted to the cover support and a second cover removably mounted to the first cover. The lock device is operable in a first mode, a second mode and a third mode. The first mode prevents the first cover from being removed from the cover support and prevents the second cover from being removed from the first cover. The second mode permits the first cover from being removed from the cover support but prevents the second cover from being removed from the first cover. The third mode permits the second cover to be removed from the first cover.

Cutting devices

A pipe joint unit includes a first pipe member with a male joint, a second pipe member with a female joint, and a pipe joint member coupling the first pipe member and the second pipe member. The male joint is received in the female joint such that an outer peripheral surface of the male joint is opposed to an inner peripheral surface of the female joint. The pipe joint member includes an engagement part that is elastically displaceable in the radial direction, and engages with the first and second pipe members. The male joint and the female joint have rotation restricting parts on the outer peripheral surface and the inner peripheral surface, respectively, for restricting relative rotation of the first and second pipe members.

Pipe joint unit and method of manufacturing the same

In a control system for controlling a power generator based on a command value associated with a control parameter, a receiver receives the command signal, a detector detects the command value included in the received command signal, and a determiner determines whether a duration of the detected command value being invariant within a predetermined range exceeds a predetermined allowed duration. In the control system, a controller controls an output of the power-generator based on a predetermined default value within the predetermined range in place of the command value when it is determined that the duration of the detected command value being invariant within the predetermined range exceeds the predetermined allowed duration.

Control system for controlling output of power generator

The power generation controller, which is for regulating an output voltage of a vehicle generator or a battery voltage of a vehicle battery charged by the vehicle generator by controlling an excitation current flowing into an excitation winding of the vehicle generator, includes a switching element connected in series between an output terminal of the vehicle generator and the excitation winding, a voltage control circuit on/off controlling the switching element such that one of the output voltage of the vehicle generator and the battery voltage is kept at a target voltage, and a contact abnormality detector circuit detecting a voltage of the output terminal as the output voltage of the vehicle generator, and detecting abnormality in a contact state between the power generation controller and the output terminal on the basis of the detected output voltage of the vehicle generator.

Power generation controller

In an alternator, failure in a power supply line connected to an output terminal of a rectifier is detected. Upon detection of a failure in this power supply line, power generation is suppressed for a predetermined period that is longer than the time constant of a field winding of the alternator. Preferably, a high voltage pulse is detected to discriminate a first condition where a single high voltage pulse is generated when an electrical load connected to the power supply line is cut off and a second condition where a high voltage pulse is repeatedly and frequently generated when a failure occurs in the power supply line. Only when the second condition is discriminated, power generation suppression control of the alternator is conducted.

Voltage regulator for alternator and method of controlling power generation of alternator

A vehicular power generation control device has a voltage control circuit, a power supply circuit and a power control circuit. The voltage control circuit controls the field current of a power generator by turning on and off a transistor. The power control circuit has an ignition switch closure detection circuit and an engine rotation detection circuit. When a closure of the ignition switch is detected by the ignition switch closure detection circuit, an operation of the rotation detection circuit is stopped. When the closure is not detected, the operation of the rotation detection circuit is started.

Vehicular power generation control device and method

In a power generator, a start of rotor rotation is detected by utilizing a small AC voltage in a stator winding generated by a remaining magnetic flux. A leak current which flows to the power generator from a battery is passed to a negative terminal of the battery through a resistor temporarily connected in series so that a small amplitude of the AC voltage will not be masked by DC drifting component arising from the leak current. Further, periodically connecting the resistor to the negative terminal upon an increase in the leak current reduces an amplitude of the AC voltage.

Power generation controller and method for a vehicle

When a transistor is turned ON, a predetermined voltage VCL is applied to a minus terminal of a voltage comparator through a C terminal. A predetermined voltage Vd (Vd>VCL) is applied to a plus terminal of the voltage comparator, and an output of the voltage comparator changes from a low level to a high level. Such change is detected by a trigger detection circuit so as to activate a timer circuit, and an output of the timer circuit transitions to the high level during a predetermined time. Thereby, a transistor is changed to an on-state, a reference voltage Vb of an adjustment voltage applied to a plus terminal of a voltage comparator is set generally to 0V, and a transistor is turned OFF, so as to temporarily suspend a power generation state of a vehicular generator.

Method for controlling a vehicular generator, an external controller and a vehicular power generation controlling device

A voltage regulator of a vehicle AC generator includes a rotor having a plurality of magnetic poles, a field coil for polarizing magnetic poles, an armature having an armature core with a plurality of phase windings for generating AC voltage under the influence of rotating magnetic field provided by the rotor and a full-wave rectifier for converting the AC voltage into DC voltage. The voltage regulator is comprised of a circuit for detecting phase voltage of one of the phase windings, and a comparator for comparing the phase voltage with a variable threshold level formed from the phase voltage and providing an output signal. Even if the phase voltage is biased by a DC bias voltage due to leak in the armature, the rotation of the rotor can be detected.

Growing community of inventors

Anjo, Japan

Koji Tanaka