Abstract: The invention relates to a tubular reactor with a rotating reactor chamber (9) for thermal treatment of biomass. It is characterized by the reactor chamber (9) being subdivided into zones by ring-shaped plates (10). These zones cause the particles to be retained in a particular area and thoroughly mixed there, i.e., the particles being treated are homogenized and the retention time also becomes more homogenous.

Abstract: The invention relates to a tubular reactor with a rotating reactor chamber (9) for thermal treatment of biomass. It is characterized by the reactor chamber (9) being subdivided into zones by ring-shaped plates (10). These zones cause the particles to be retained in a particular area and thoroughly mixed there, i.e., the particles being treated are homogenized and the retention time also becomes more homogenous.

Abstract: The invention relates to a high-temperature seal (1) with a sealing ring (5) and a counter-ring (6), characterized by the sealing ring (5) and counter-ring (6) being made of metal. As a result, good contact is achieved with good sealing effect, also at high temperatures. It is an advantage if the sealing ring (5) is made of a high-grade steel and/or the counter-ring (6) is made of a CuNi alloy.

Abstract: A tool bit to be inserted into a tool bit chuck of a hand tool used for chiseling, drilling and/or percussion drilling has an axially extending chucking shank (A) with two locking grooves (1) closed at the ends spaced apart in the axial direction, and two rotary entrainment grooves (2) open at a free end of the shank. In addition, two rotary entrainment faces (3) are located in the areas of the locking grooves (1).

Abstract: Drive control for a drilling device including a universal motor is arranged so that the total available mains voltage is applied when a fraction of the motor torque, available for the full work range of the device, is reached. If a higher torque is desired, the motor torque/rotational speed curve follows the natural characteristic line until a load point is reached where current limitation occurs. Accordingly, as the motor speed decreases as the normal work range is exceeded, the operator of the drilling device is signaled concerning the load state due to the noise developed in the drilling device.