Mitsubishi Denki Kabushiki Kaisha

Kawasaki Jukogyo Kabushiki Kaisha

Sumitomo Seika Chemicals Co., Ltd.

Nellcor Puritan Bennett Incorporated

Kenji Nakamura

Nobuo Ukita

Yasumasa Hanazaki

Masahiro Ieda

Yoshio Katayama

Yoshio Togashi

Takashi Ohsawa

Kazuo Nishikawa

Takashi Osawa

Noriaki Inoue

Masato Kotake

Hideo Kazama

Masahide Kita

Masahiro Kuzukawa

Kazushi Takemoto

Fumio Kameyama

Satoshi Akamatsu

Yutaka Yasuhara

Michisada Sakamoto

Hiroshi Iwata

Masahiro Yabuta

A production method for producing a particle mixture in which two or more types of particles are mixed, including a step of adding a first additive to first particles and mixing the first additive with the first particles using a first mixer and a step of introducing the two or more types of particles including the first particles mixed with the first additive and second particles into a blender container of a gravity blender, and mixing the two or more types of particles inside the blender container.

Method for producing particle mixture

In an apparatus for producing the water-absorbent resin, gas heated by the polymerization heat accompanied by a polymerization reaction in a reactor main body flows through a first pipe into a heat exchanging structure, and a cooled fluid obtained by the cooling flows through a second pipe into the reactor main body. In the apparatus, a first pipe temperature adjusting portion adjusts a temperature of the first pipe to fall within a predetermined temperature range, and a polymerization reactor temperature adjusting portion adjusts a temperature of an upper portion of the reactor main body to fall within a predetermined temperature range.

Apparatus for producing water-absorbent resin

A hydraulic operated valve includes an electromagnetic adsorption mechanism and a steel ball. In the electromagnetic adsorption mechanism, when a current is supplied, an adsorption plate is adsorbed by a solenoid. By this adsorption, a steel ball is pressed against an outer surface of a cam disc. The outer surface of the cam disc includes two steps. When the cam disc is rotated clockwise or counterclockwise, the pressed steel ball engages the two steps. Thus, the cam disc is detented. These two steps are configured such that when the cam disc is returned to a neutral position, the adsorption plate is separated from the solenoid against the pressing of the electromagnetic adsorption mechanism. Thus, the detent state of the cam disc is canceled.

Operating device

A discharge lamp lighting controller that detects the voltage applied to a discharge lamp used by a vehicle, for example, and stops power supply to the discharge lamp if the voltage goes out of an estimated rated voltage range in a design stage. Circuit components are protected from possible impairment due to excessive current that may flow depending on the state of the discharge lamp under the constant power control of the discharge lamp.

Discharge lamp lighting controller and discharge lamp socket applied to

A light-emission controlling apparatus including an electric discharge lamp (106) which can emit light, a unit for detecting the light-emission state of the electric discharge lamp (106), such as a light-emission time integrating unit (107) for measuring the integral of the length of time that the electric discharge lamp (106) has emitted light, a comparing unit (1082) for comparing the integral of the length of time that the electric discharge lamp (106) has emitted light which is measured by the light-emission time integrating unit (107) to a reference value, and a light-emission mode selecting unit (1083) for selecting either a first light-emission mode or a second light-emission mode according to a comparison result from the comparing unit (1082) so as to cause the electric discharge lamp (106) to emit light in one light-emission mode selected.

Light-emission controlling apparatus

There is provided a light-emission controlling apparatus comprising a light-emission time integrating unit (107) for measuring the integral of the length of time that an electric discharge lamp (106) has emitted light, a comparing unit (1082) for comparing the integral of the length of time that the electric discharge lamp (106) has emitted light which is measured by the light-emission time integrating unit (107) to a reference value, a light-emission mode selecting unit (1083) for selecting either a first light-emission mode or a second light-emission mode according to a comparison result from the comparing unit (1082) so as to cause the electric discharge lamp (106) to emit light in one light-emission mode selected, and a display controlling unit (1084) for transmitting information about the comparison result from the comparing unit (1082) as the information about the light-emission state of said light-emitting means, by way of a local are network (109), to a display device (500 and 501) disposed outside the light-emission controlling apparatus, and for displaying the information on the display device.

An alternating current discharge lamp lighting apparatus including discharge lamp, tube wall temperature measuring unit, internal temperature inferring unit and period setting unit. The tube wall temperature measuring unit measures temperature of the tube wall of the discharge lamp. The internal temperature inferring unit infers internal temperature of the discharge lamp before discharge is started based on the tube wall temperature measured by the tube wall temperature measuring unit. The period setting unit sets a direct current voltage applying period based on the inferred internal temperature by the internal temperature inferring unit.

Apparatus for lighting alternating current discharge lamp

Lock mechanism for a connector

A hydraulically operated control valve with a cam member that pivots toward one or the other side of the neutral position in response to an operating member. A pair of push rods each with a piston interposed between the cam member and one of a pair of spool valves. A casing is provided wherein the cam member is mounted in the casing upper portion. A pair of piston chambers, each having an oil chamber formed at the top by the piston and a damper chamber formed at the bottom by the piston, are formed in the casing lower portion. A throttle in each piston communicates fluid between the corresponding oil chamber and the damper chamber. A pair of spring chambers each contain a spool valve at the center thereof. A pair of casing partition members separate the piston chambers and the spring chambers, and are adapted so the push rods extend through the center thereof. A pair of damping springs energize the pistons in the direction of departing from the partition members. A pair of check valves included on the casing partition members enable the hydraulic oil to move from the spring chambers to the damper chambers and prevent the hydraulic oil from moving from the damper chambers to the spring chambers.

Hydraulic control valve

In a preferred embodiment, a lighting device may include a metal halide lamp and a polarity inversion step-up circuit which generates a DC voltage Va of minus value. An inverter circuit inverts the output of the polarity inversion step-up circuit to create AC voltage and supplies it to a discharge lamp. Consequently, the discharge lamp has applied a square wave AC voltage with voltage between zero and peak being nearly .vertline.Va.vertline.. Potential of a lighting tool to enclose the discharge lamp is set to ground potential. Since the discharge lamp is lit always at a mean lighting potential which is less than the potential of the lighting tool, the Na loss phenomenon is suppressed. That is, life of the discharge lamp can be lengthened. Other embodiments also operate to keep the mean lighting potential of the discharge lamp less than the potential of the lighting tool.

Lighting device and method applying a relatively higher potential to

An inverter circuit produces a proper electric power to be supplied to a discharge lamp. A feedback control system detects a lamp voltage and a lamp current, or a lamp power of the discharge lamp, and feedback-controls the inverter circuit based on the detected at least one of the lamp voltage, lamp current and lamp power. A response switching circuit switches a response speed of the feedback control system so that the response speed is high in a low luminous efficiency region, and is low in a high luminous efficiency region.

Discharge lamp lighting device capable of preventing a flicker due to

A discharge-lamp lighting device stably lights and controls a discharge lamp suitable for use in a vehicle. In the discharge-lamp lighting device, an inverter for receiving DC power from a DC step-up circuit supplies AC power to the discharge lamp. Further, a start-discharging circuit applies a high voltage for effecting start discharging to the discharge lamp. A lamp current controlling circuit decides the value of a current to be supplied to the discharge lamp, based on both the luminous efficiency of the discharge lamp, which varies depending on a voltage applied to the discharge lamp and a voltage for the discharge lamp, which has been detected by a voltage detector circuit. A step-up controlling circuit controls a voltage output from the DC step-up circuit in such a manner that the decided value of current coincides with the value of a current to be supplied to the discharge lamp, which has been detected by a current detector circuit.

Discharge lamp current controlling circuit

An apparatus for lighting a discharge lamp is provided with an inverter circuit 3 for causing an input power supply 2 to generate the voltage required for a discharge lamp 1, a rectifying smoothing circuit 4 for rectifying and smoothing the output of the invertor circuit 3, a feedback control circuit 8 for computing the power required for the discharge lamp 1 so as to control the feedback control circuit 8 in the feedback mode, a polarity switching circuit 9 for switching the polarity of the rectified and smoothed output to apply the output to the discharge lamp 1 with a low-frequency square wave, and an ignitor 11 for superposing a high-voltage pulse on the discharge lamp 1 when the discharge lamp 1 is started. The apparatus therefor further includes an overcurrent control circuit 14 for detecting an overcurrent flowing into the discharge lamp 1 so as to make the polarity switching circuit 9 perform a high-frequency chopper operation together with a low-frequency operation for only an interval during which the overcurrent flows, so that the life of the discharge lamp is prolonged by suppressing the overcurrent flowing into the discharge lamp and preventing its electrodes from wearing.

Growing community of inventors

Hyogo, Japan

Kenji Nakamura