Abstract: When a large-sized silicon nitride substrate having high thermal conductivity is produced, a portion where the thermal conductivity is low is generated, which causes reduction in yield (pass rate). Provided is a silicon nitride substrate in which ?e/?c, which is a ratio of a thermal conductivity ?c at a center portion of the substrate to a thermal conductivity ?e at an end portion of the substrate, is 0.85 to 1.15. Preferably, the silicon nitride substrate has a size of 150 mm×150 mm or more. In the silicon nitride substrate, the ?c and the ?e each are preferably 100 W/m·K or more.

Abstract: A photochromic composition contains, in a predetermined combination: one or more photochromic compounds represented by General Formula 1; and one or more selected from the group consisting of a photochromic compound represented by General Formula A, a photochromic compound represented by General Formula B, and a photochromic compound represented by General Formula C.

Abstract: Color unevenness generated on a surface of a silicon nitride substrate is reduced. A silicon nitride substrate formed by nitriding silicon containing in a sheet-shaped green body includes a first surface and a second surface opposite to the first surface. In this case, when color difference between a center and an edge of at least one surface of the first surface and the second surface is expressed to be “?E*ab”, a relation “?E*ab?1.5” is established.

Abstract: A motorized leg (1) is provided with a lower knee member (110), an upper knee member (120), a knee joint mechanism (130) coupling the lower knee member (110) and the upper knee member (120) such that the angle therebetween can be changed, and an extendable device (140) capable of changing the angle between the lower knee member (110) and the upper knee member (120) by extending and contracting. The extendable device (140) comprises a motor (M) and a transmission (T) that transmits power from the motor (M). The transmission (T) comprises a first transmission mechanism (T1) that transmits power from the motor (M) at a first gear ratio, and a second transmission mechanism (T2) that transmits power from the motor (M) at a second gear ratio different from the first gear ratio.

Abstract: An electric prosthetic limb is provided with: a below-knee side member; an above-knee side member; a knee joint mechanism that connects the below-knee side member and the above-knee side member in a manner such that an angle formed therebetween is variable; and an extendable device that is capable of extending and contracting to change the angle formed between the below-knee side member and the above-knee side member. The extendable device is provided with a motor and a transmission transmitting power from the motor. The transmission is provided with: a first transmission mechanism that transmits the power from the motor at a first transmission gear ratio; and a second transmission mechanism that transmits the power from the motor at a second transmission gear ratio different from the first transmission gear ratio.

Abstract: Provided is a motion transmission mechanism 30 of a limb motion support device 1A configured so as not to transmit the movements of a pair of braces 10R and 10L attached to right and left legs to spring members 20R and 20L in a state where the bending degrees of the right and left legs are smaller than a predetermined bending degree in the case where both of the right and left legs equipped with the braces 10L and 10R are bent from a stretched state and configured to transmit the movements of the braces 10L and 10R to the spring members 20L and 20R via a wire 31 after the bending degrees of the legs increase to be larger than the predetermined bending degree.

Abstract: Provided is an assist device, including a lumbar orthosis, a buttock orthosis, an ankle orthosis, a leg frame and an assist mechanism. In response to a user's bending and stretching motions, the assist mechanism applies an assist force to the user's body by operating the leg frame and separating the lumbar orthosis and the buttock orthosis from the ankle orthosis. The ankle orthosis includes a front locking part and a back locking part configured to be locked to the user's lower leg, as well as an instep abutting part and a heel abutting part abutting against the user's foot from above.

Abstract: A motion assist device for assisting a motion such as a walking motion of a user includes: a pair of femoral part support units (3L, 3R) configured to be worn by two femoral parts of a user, a single power source (4, 70) for producing power and a power transmission unit (20; 60; 91, 92) for transmitting the power of the power source to the femoral part support units as an opposite phase motion, wherein the power transmission unit includes a differential unit (22; 63, 64; 93, 94) for accommodating a same phase motion of the two femoral part support units. The device may further include a control unit (5) configured to actuate the power source when the femoral part support units are undergoing the opposite phase motion, and to keep the output end of the power source stationary when the femoral part support units are undergoing the same phase motion.

Abstract: Provided is a motion assist device that can minimize the number of actuators that are required for assisting a certain mode of motion of the user while allowing a greater freedom of motion beside from the motion which the motion assist device is designed to assist. A power transmission mechanism for the device includes a belt drive mechanism which is incorporated with a differential mechanism.

Abstract: Provided is a motion transmission mechanism 30 of a limb motion support device 1A configured so as not to transmit the movements of a pair of braces 10R and 10L attached to right and left legs to spring members 20R and 20L in a state where the bending degrees of the right and left legs are smaller than a predetermined bending degree in the case where both of the right and left legs equipped with the braces 10L and 10R are bent from a stretched state and configured to transmit the movements of the braces 10L and 10R to the spring members 20L and 20R via a wire 31 after the bending degrees of the legs increase to be larger than the predetermined bending degree.

Abstract: An anesthetic tank includes an insertion mouth for inserting an injection adapter of an anesthetic container, and a storage portion communicating with the insertion mouth. A volatile anesthetic inside of the anesthetic container is injected into the storage portion. An identifying member is arranged on the outside of the insertion mouth and is rotatable around the center axis of the insertion mouth. The identifying member has key groove formed in the internal surface of an insertion hole for inserting the injection adapter. The key groove are used for identifying the type of the volatile anesthetic in collaboration with keys formed in the injection adapter. A cover member has an opening formed in the position facing the insertion mouth and the insertion hole and presses the peripheral part of the identifying member.

Abstract: An anesthetic tank includes an insertion mouth for inserting an injection adapter of an anesthetic container, and a storage portion communicating with the insertion mouth. A volatile anesthetic inside of the anesthetic container is injected into the storage portion. An identifying member is arranged on the outside of the insertion mouth and is rotatable around the center axis of the insertion mouth. The identifying member has key groove formed in the internal surface of an insertion hole for inserting the injection adapter. The key groove are used for identifying the type of the volatile anesthetic in collaboration with keys formed in the injection adapter. A cover member has an opening formed in the position facing the insertion mouth and the insertion hole and presses the peripheral part of the identifying member.

Abstract: Provided is a motion assist device that can minimize the number of actuators that are required for assisting a certain mode of motion of the user while allowing a greater freedom of motion beside from the motion which the motion assist device is designed to assist. A power transmission mechanism for the device includes a belt drive mechanism which is incorporated with a differential mechanism.

Abstract: An axial flow compressor blade unit including a platform section and an airfoil section, which are used as arranged on a circumference about an axis of the compressor. The platform section includes an inner diametric surface segment inwardly of the circumference, an outer diametric surface segment outwardly of the circumference, two annular side surface segments extending in a circumferential direction, two axially side surface segments extending in the axial direction, and a coupling portion formed in each of the annular side surface segments so as to extend in the circumferential direction and being of a shape projecting or recessed in the axial direction. The airfoil section is formed to erect from the platform section so as to extend in a radial direction. The platform section and the airfoil section are formed integrally with each other while having a powdered metal sintered structure.

Abstract: A motion assist device for assisting a motion such as a walking motion of a user includes: a pair of femoral part support units (3L, 3R) configured to be worn by two femoral parts of a user, a single power source (4, 70) for producing power and a power transmission unit (20; 60; 91, 92) for transmitting the power of the power source to the femoral part support units as an opposite phase motion, wherein the power transmission unit includes a differential unit (22; 63, 64; 93, 94) for accommodating a same phase motion of the two femoral part support units. The device may further include a control unit (5) configured to actuate the power source when the femoral part support units are undergoing the opposite phase motion, and to keep the output end of the power source stationary when the femoral part support units are undergoing the same phase motion.

Abstract: A high pressure discharge lamp with auxiliary lamp comprises: a high pressure discharge lamp having an arc tube and at least one sealing portion, a pair of main electrodes, and a pair of feeders supplying power to the main electrodes; an auxiliary lamp having an airtight case, an inner electrode, and an outer electrode, wherein the inner electrode is arranged at a position so as to part the inner space to large and small spaces, the outer electrode is arranged at a position so as to face the large space, the auxiliary lamp as arranged as the large space faces the sealing portion.

Abstract: An axial flow compressor blade unit including a platform section and an airfoil section, which are used as arranged on a circumference about an axis of the compressor. The platform section includes an inner diametric surface segment inwardly of the circumference, an outer diametric surface segment outwardly of the circumference, two annular side surface segments extending in a circumferential direction, two axially side surface segments extending in the axial direction, and a coupling portion formed in each of the annular side surface segments so as to extend in the circumferential direction and being of a shape projecting or recessed in the axial direction. The airfoil section is formed to erect from the platform section so as to extend in a radial direction. The platform section and the airfoil section are formed integrally with each other while having a powdered metal sintered structure.

Abstract: The present invention provides a rehabilitation device using a walking assistance device (1) having an actuator which generates and provides torque to a lower limb joint of a wearer wearing the walking assistance device (1), comprising a floor reaction force pattern storing unit (330) configured to store a reference floor reaction force pattern; a control target floor reaction force setting unit (340) for determining a control target floor reaction force based on the floor reaction force pattern stored in the floor reaction force pattern storing unit (330); a target torque calculating unit (350) for calculating a target torque of the actuator to achieve the control target floor reaction force determined by the control target floor reaction force setting unit (340); and an actuator output controller (150) for controlling output of the actuator such that the actuator generates a torque matching the target torque calculated by the target torque calculating unit (350); wherein the floor reaction force that the we

Abstract: When securing a frame (7) made of a rigid member for carrying a heavy object such as a drive unit (3) for a walking assistance device on the hip of a wearer, a hip protective belt (4) made of fabric is wrapped around the hip of the wearer, and the frame (7) is secured thereon via a flexible plate (5) and a pressure plate (6) located on an outer side of the flexible plate (5) and having a higher rigidity than the flexible plate (5). The intermediate members allow the wearer to feel the rigidity of the frame in a mitigated manner, and the wearer would not experience any discomfort from the pressure of the frame even when the posture of the wearer is changed. The hip protective belt can readily conform to the body contour of the wearer, but the frame would not deform. Because the intermediate members absorb the difference in the builds of different wearers, the frame may come in a small number of different sizes to fit almost any wearer allowing the hip support member can be mass produced at low cost.

Abstract: A high pressure discharge lamp with auxiliary lamp comprises: a high pressure discharge lamp having an arc tube and at least one sealing portion, a pair of main electrodes, and a pair of feeders supplying power to the main electrodes; an auxiliary lamp having an airtight case, an inner electrode, and an outer electrode, wherein the inner electrode is arranged at a position so as to part the inner space to large and small spaces, the outer electrode is arranged at a position so as to face the large space, the auxiliary lamp as arranged as the large space faces the sealing portion.