Intellectual Property

IP Strategy

Intellectual Property Activities to Support Innovative Creation

Nabtesco's business is protected by many of intellectual property.
Some of them which are recognized to expect high contribution for business, awarded by CEO as Nabtesco brilliant inventor.

More details of Intellectual Property Activities

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.3737265

MOVEMENT RESTRICTING STRUCTURE OF THE INTERNAL GEAR PINS BY THE MAIN BEARING INNER RING

Summery of the Invention

The present invention is a technology that significantly improves the internal gear pin adjustment workability by eliminating the need to remove the main bearing outer ring from the case when replacing the pin as a result of restricting the pin movement with the main bearing inner ring. This technology is adopted for the hollow shaft model of Precision Reduction Gear RV™.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.4208169

WATERPROOF-SEAL STRUCTURE FOR REDUCTION GEAR

Summery of the Invention

The present invention is a technology that realizes a waterproofing function for a reduction gear by filling the gap between two sealing components in the sealing structure of the reduction gear with absorbency grease. This technology is adopted for industrial robots that need to be waterproofed.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.3031539

DRIVING DEVICE FOR AUTOMATIC TOOL CHANGER

Summery of the Invention

The present invention is a technology that realizes a compact driving device which allows the reduction gear, motor, and wheel to be arranged on the same axial line as a result of fixing the motor to the end of the reduction gear and also fixing the wheel to the case circumference. This technology is adopted for automatic tool changers (ATCs).

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.3088990

DRIVING DEVICE FOR ROTATING BODY

Summery of the Invention

The present invention is a technology that enables the space on one end of the stationary frame to be utilized effectively by arranging the reduction gear, driving motor, and rotating body on the other end of the frame. This technology is adopted for ATCs of machining centers and so on.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.2590404

JOINT DRIVING APPARATUS FOR INDUSTRIAL ROBOTS

Summery of the Invention

The present invention is a technology that realizes an industrial robot with low vibration by shifting the resonance area of the robot as a result of setting the reduction ratio between the pre-stage and the post-stage of the eccentric oscillating reduction gear with a two-stage speed reducing mechanism within a specified range. This technology is adopted for Precision Reduction Gear RV™.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.2742912

JOINT DRIVING APPARATUS FOR INDUSTRIAL ROBOTS

Summery of the Invention

The present invention is a technology that prevents the resonance of a robot and reduces the size of a robot by installing an eccentric oscillating reduction gear with a two-stage speed reducing mechanism between the first component and the second component of a robot. This technology is adopted for Precision Reduction Gear RV™.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.2841060

JOINT DRIVING APPARATUS FOR INDUSTRIAL ROBOTS

Summery of the Invention

The present invention is a technology that prevents the resonance of a robot and reduces the size of a robot by passing the pre-stage input gear of an eccentric oscillating reduction gear with a two-stage speed reducing mechanism through to the post-stage. This technology is adopted for the solid shaft model of Precision Reduction Gear RV™ (Type E, N, etc.) .

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.2139668

JOINT DRIVING APPARATUS FOR INDUSTRIAL ROBOTS

Summery of the Invention

The present invention is a technology that realizes an industrial robot with low vibration by shifting the resonance area of a robot as a result of selecting the reduction ratio of the eccentric oscillating reduction gear with a two-stage speed reducing mechanism within a specified range. This technology is adopted for Precision Reduction Gear RV™.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.2135980

JOINT DRIVING APPARATUS FOR INDUSTRIAL ROBOTS

Summery of the Invention

The present invention is a technology that realizes an industrial robot with low vibration by selecting the two-stage reduction ratio of the eccentric oscillating reduction gear to cause the crank frequency to be below the natural frequency of the robot. This technology is adopted for Precision Reduction Gear RV™.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.3450096

ECCENTRIC ORBITING TYPE REDUCTION GEAR, AND ITS MANUFACTURING METHOD

Summery of the Invention

The present invention is a technology that eliminates the need to adjust the preload of the bearing by directly forming a race face equivalent to the main bearing inner ring on the carrier support member and disk of the reducing gear. This technology is adopted for the solid shaft model of Precision Reduction Gear RV™ (Type E, N, etc.).

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.4925992

ECCENTRIC ORBITING TYPE REDUCTION GEAR

Summery of the Invention

The present invention is a technology to secure a hollow aperture by offsetting the motor from the center of the reducing gear as a result of transmitting the rotation input into one crankshaft to another crankshaft using an idler gear. This technology is adopted for Precision Reduction Gear RV™ (Type CA) .

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Accessibility Innovations Company

[Publication country] Japan Patent Office
Japanese Patent No.4276926

PLATFORM DOOR SYSTEM WITH EMERGENCY EXIT

Summery of the Invention

The present invention is a technology that realizes a compact structure that allows passengers to evacuate in an emergency by installing doors that can pass through the door pocket. This technology is adopted for platform doors of the Yamanote Line.

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Accessibility Innovations Company

[Publication country] Japan Patent Office
[Patent number] Japanese Patent No. 5325536 (P5325536)
[Design registration number] D1362663

THIN TYPE PLATFORM DOOR SYSTEM

Summery of the Invention

The present invention is a technology that allows the thickness of the platform door system to be made thinner by putting the driving mechanism at the bottom of the door guide mechanism. This technology is adopted for platform doors of the Yamanote Line.

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Accessibility Innovations Company

[Publication country] Japan Patent Office
Japanese Patent No.3299135
Japanese Patent No.3352911
Japanese Patent No.3696979
Japanese Patent No.3698817
Japanese Patent No.3765875
Japanese Patent No.3810516

CONTROLLER FOR AUTOMATIC DOOR SYSTEM

Summery of the Invention

The present invention is an electric motor driving technology for opening and closing doors safely and comfortably without being affected by external forces such as wind by alternately generating the driving force and braking force with an electric motor. This technology is adopted for the new DS Series.

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Power Control Company

[Publication country] Japan Patent Office
Japanese Patent No.3452474

BALANCED PISTON RELIEF VALVE

Summery of the Invention

The present invention is a technology that suppresses vibration by making the seat section slide with a downward force applied to the child valve in a relief valve as a result of tilting the contact surface of the piston pressing the child valve. This technology is adopted for hydraulic valves used in construction machines.

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Aerospace Company

[Publication country] Japan Patent Office
Japanese Patent No.3871482
Japanese Patent No.4245890

MANIFOLD FOR FLIGHT CONTROL ACTUATION SYSTEM

Summery of the Invention

The present invention is a technology that facilitates the formation of an oil passage in the manifold where the hydraulic oil of an actuator flows by forming it on the surface of the storing body. This technology is adopted for the Boeing 777 aircraft.

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Power Control Company

[Publication country] Japan Patent Office
[Utility model registration number] No. 2582913

RELIEF VALVE

Summery of the Invention

The present invention is a technology that prevents a hydraulic motor from suddenly stopping by constructing a two-stage relief mechanism using an accumulator and two check valves for the braking structure of the motor. This technology is adopted for the traction motor of construction machines.

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Power Control Company

[Publication country] Japan Patent Office
Japanese Patent No.4444620

AUTOMATIC TRANSMISSION MECHANISM OF HYDRAULIC MOTOR

Summery of the Invention

The present invention is a technology to reduce the friction in the hole of a piston chamber by enabling the pressure oil in the two-speed piston chamber to move slowly as a result of hydraulically controlling the movement of the two-speed piston with two diaphragms. This technology is adopted for the traction motor used in hydraulic shovels.

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Accessibility Innovations Company

[Publication country] Japan Patent Office
Japanese Patent No.3729283
Japanese Patent No.4356848
Japanese Patent No.3568149
Japanese Patent No.3245828
Japanese Patent No.3938900
Japanese Patent No.3948724
Japanese Patent No.4311752
Japanese Patent No.4646319

PNEUMATIC MICROPROCESSOR-CONTROLLED PROSTHESIS

Summery of the Invention

The present invention is related to improvement in the tracking of the traveling speed of a single- or four-axis knee joint. This includes a technology to obtain a buffer suited for walking as a result of narrowing the flow channel in the end stage of cylinder extension and a technology to detect the ground contact state of each foot. This technology is adopted for Intelligent knee joint.

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Power Control Company

[Publication country] Japan Patent Office
Japanese Patent No.3344283

COUNTER BALANCE VALVE

Summery of the Invention

An invention in which the counter balance valve and the check valve used in construction machines have been integrated and a vent hole is provided on the opposite side of the check valve. This ensures that the check valve will fully open, preventing cavitation thanks to improved oil suction characteristics.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.4020560

ECCENTRIC ROTARY REDUCTION GEAR

Summery of the Invention

The present invention improves the rigidity of a reduction gear in the circumferential direction by providing an allied gear in between the input gear and each spur gear, thereby making the distance between the central shaft and the crankshaft of a reduction gear longer as well as reducing noise by suppressing the circumferential speed of the gear.

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Precision Equipment Company

[Publication country] Japan Patent Office
Japanese Patent No.4371704

LUBRICANT COMPOSITION FOR SPEED REDUCER AND SPEED REDUCER

Summery of the Invention

The present invention improves the efficiency of speed reducers by reducing the friction at its sliding part and rotating part as a result of including molybdenum dithiocarbamate and calcium salt in the lubricant for speed reducers.

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PACRAFT Co., Ltd. (Former: Toyo Jidoki Co., Ltd.)

[Publication country] Japan Patent Office
Japanese Patent No.4150610

SPOUT INSERTING-SEALING DEVICE AND BAG-MAKING PACKAGING MACHINE USING THE DEVICE

Summery of the Invention

The present invention allows the construction of a spout sealer to be simplified by provisionally sealing the bag in which a spout in inserted and providing a built-in means of opening the bag.

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PACRAFT Co., Ltd. (Former: Toyo Jidoki Co., Ltd.)

[Publication country] Japan Patent Office
Japanese Patent No.4297231

ABNORMAL CONDITION DETECTING APPARATUS IN PACKAGING MACHINE FOR BAGGING

Summery of the Invention

The present invention is a bag-making and packaging machine which allows the maximum defect rate, which is the criteria for fault judgment, to be set and thus easily adjusted depending on the actual usage environment. The machine can contribute to improved productivity, reducing fluctuations in part replacement time, and cutting costs.

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Accessibility Innovations Company

[Publication country] Japan Patent Office
Japanese Patent No.4846421
Japanese Patent No.4856440
Japanese Patent No.4943944
Japanese Patent No.4958662
Japanese Patent No.4971058
Japanese Patent No.5005552
Japanese Patent No.5042509
Japanese Patent No.5069864
Japanese Patent No.5242040

AUTOMATIC DOOR UNIT WITH CAN COMMUNICATION SYSTEM

Summery of the Invention

This door unit allows the door opening and closing operation to be optimized and its safety to be further improved by allowing each automatic door component to independently collect information on the operating condition and change operating parameters of other components as a result of connecting to multiple automatic door components to the CAN bus for mutual communication.

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Power Control Company

[Publication country] Japan Patent Office
Japanese Patent No.4246566

GEAR MECHANISM AND REDUCTION PLANETARY GEAR

Summery of the Invention

This mechanism and gear reduce the surface pressure and bending stress on each planetary gear of the planetary reduction gear by forming a planetary gear with full depth teeth as well as forming sun gear root teeth with full depth and thereby forming the sun gear addendum with full depth teeth.

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Aerospace Company

[Publication country] Japan Patent Office
Japanese Patent No.5364195

RACK FOR HOUSING A LIQUID-COOLED ELECTRIC UNIT

Summery of the Invention

This rack can prevent a liquid coolant leaked from a fluid connector from getting on an electric connector by arranging the electric connector supplying electricity to the electronic unit and the fluid connector supplying a liquid coolant at different positions on the horizontal flat surface of the rack.