Abstract: A work holding mechanism includes a body part having a three-dimensional shape including at least a recess or a protrusion, and an adsorption part for holding a work by adsorbing the work onto the body part in conformity to the three-dimensional shape of the recess or the protrusion provided in the body part. The work is held by being adsorbed in conformity to the three-dimensional shape of the body part, and, therefore, the amount of usage of the work in a work molding system can be reduced as compared with when the work is held so as to have a flat shape.

Abstract: A differential rotation control device with a hydraulic assembly includes two torque transmission assemblies. Each assembly has a first rotor with a pump-driven arrangement secured to a drive shaft which is common to both of the torque transmission assemblies, and a second rotor with a torque-receiving arrangement rotatably supported on the drive shaft. The torque-receiving arrangement is rotated when hydraulic power is applied to the pump-driven arrangement so that the rotation speed ratio between the first and second rotors can be variably set. The two pump assemblies each have a pump-driving arrangement assembled to the first rotor for constituting a circular route together with the pump-driven arrangement for circulating fluid. A pump-regulating arrangement controls fluid supplied to the pump-driven arrangement when the drive shaft is rotated relative to a pump-stator to which the pump-regulating arrangement is secured.

Abstract: A torque transmission apparatus has a hydraulic assembly with a variable speed control, and comprises first and second rotors at a power side of the transmission apparatus, the rotors being coaxially rotatable with respect to each other. The first rotor has a swash plate facing the second rotor. The second rotor has a plurality of cylindrical bores which have open ends facing the swash plate and other ends which are communicated with through bores arranged in communication with ports. Plunger members are provided for sliding in the cylindrical bores, the plunger members being guided by the swash plate. A control rotor and a stator are provided at a control side of the transmission apparatus. The stator has a swash plate, and the control rotor has cylindrical bores having open ends facing the swash plate of the stator and communicating with through bores in the stator. Plungers are provided which slide in the cylindrical bores of the control rotor, guided by the variable swash plate of the stator.

Abstract: A system for measuring liquid comprises means for applying suction to liquid to be measured, means for maintaining liquid in a micro-pipette tube or tubes, said tube having a storage portion with a large inner diameter and a slender tubular portion with small diameter, and a pressure gauge for measuring potential head in said micro-pipette tube or tubes.

Abstract: A liquid sampling apparatus for adjusting the amount of sampled fluid drawn into a cylinder. A carriage reciprocates vertically and drives a rod inclined at an acute angle to the vertical direction. The axes of the cylinder and the rod are parallel to each other. Motion of the rod moves a piston in the cylinder to sample the fluid. A push member rotatably coupled to the carriage can be adjusted at an angle to the horizontal direction. Because the push member engages the rod to drive it during carriage motion, a given stroke of the carriage produces varying travel distances of the rod depending on the angle to which the push member is set.