Abstract: A torque restriction mechanism is provided by which torque cutoff and torque transmission can be reliably performed without being affected by a rotation state of the drive unit, and damage to a collision object can be reduced even with a simple configuration. The torque restriction mechanism includes a first clutch and a second clutch. The first clutch cuts off torque to a driven unit when reaction torque at a stationary portion of a motor equals or exceeds a first value. The second clutch that transmits torque in accordance with a rotation state of a rotor of the motor, cuts off torque to the driven unit when the reaction torque equals or exceeds a second value larger than the first value.

Abstract: The speed reducer includes: a first sun gear; a second sun gear arranged coaxially with the first sun gear and having a different number of teeth from the first sun gear; a first planetary gear to engage with the first sun gear; a second planetary gear to engage with both the second sun gear and the first planetary gear and having an equal number of teeth to the first planetary gear; and a carrier part to rotatably fix relative positions of shafts of the first sun gear, the first planetary gear, and the second planetary gear and to rotate at a lower rotational speed than the first sun gear. The first sun gear and the second sun gear are rotated in opposite directions at an equal rotational speed.

Abstract: The speed reducer includes: a first sun gear; a second sun gear arranged coaxially with the first sun gear and having a different number of teeth from the first sun gear; a first planetary gear to engage with the first sun gear; a second planetary gear to engage with both the second sun gear and the first planetary gear and having an equal number of teeth to the first planetary gear; and a carrier part to rotatably fix relative positions of shafts of the first sun gear, the first planetary gear, and the second planetary gear and to rotate at a lower rotational speed than the first sun gear. The first sun gear and the second sun gear are rotated in opposite directions at an equal rotational speed.

Abstract: A torque restriction mechanism is provided by which torque cutoff and torque transmission can be reliably performed without being affected by a rotation state of the drive unit, and damage to a collision object can be reduced even with a simple configuration. The torque restriction mechanism according to the present invention includes a first clutch and a second clutch. The first clutch cuts off torque to a driven unit when reaction torque at a stationary portion of a motor equals or exceeds a first value. The second clutch that transmits torque in accordance with a rotation state of a rotor of the motor, cuts off torque to the driven unit when the reaction torque equals or exceeds a second value larger than the first value.

Abstract: Provided is a photodetector including: an organic semiconductor (20) having protrusions; a metal layer (30) added onto the organic semiconductor (20), for promoting at least one of localized plasmon resonance and surface plasmon resonance in which electrons are excited through irradiation of detection light; and a semiconductor (40) forming a junction with the metal layer (30), for allowing electrons excited through the plasmon resonance to pass through the junction (40a) with the metal layer (30).

Abstract: Provided is a photodetector including: an organic semiconductor (20) having protrusions; a metal layer (30) added onto the organic semiconductor (20), for promoting at least one of localized plasmon resonance and surface plasmon resonance in which electrons are excited through irradiation of detection light; and a semiconductor (40) forming a junction with the metal layer (30), for allowing electrons excited through the plasmon resonance to pass through the junction (40a) with the metal layer (30).

Abstract: A process for producing concentrated fruit extracts from raw fruit is described. The raw fruit, which may be whole or chopped into bits and at various states of ripeness, is mixed with water and the wetted fruit placed in a pressurized heating container such as an autoclave, where the fruit is heated at a predetermined temperature and pressurized at a predetermined pressure for a predetermined period of time so as to extract the fruit. The extracted fruit is then fed to a separator device which separates the extract from the fruit residue. The extract is then concentrated under vacuum to provide a concentrated fruit extract while the residue is discarded.