Abstract: An apparatus for measuring the transport time of impurity particles in a plasma includes a spectrometer, a system for the spatially-resolving conversion into charge of light exiting the spectrometer, an integrator circuit for the spatially-resolving integration of the charge, as well as a display screen that presents the integrated charge as a series of spectral lines. The integrator circuit is assembled from discrete components. Thus, the transport of plasma impurities can be properly measured.

Abstract: A ventilation system comprises a seat, a first fan, and a second fan. The seat has an upholstery part that includes a shaped body. The shaped body has a bearing surface, a rear side opposite the bearing surface, a first opening extending generally from the bearing surface to the rear side, and a second opening. The first fan is coupled to the first opening and is configured to generate a first flow of air generally perpendicular to the bearing surface. The second fan is coupled to second opening and is configured to generate a second flow of air generally transverse to the first flow of air.

Abstract: The invention relates to an apparatus comprising a spectrometer, means for the spatially-resolving conversion into charge of light exiting the spectrometer, an integrator circuit for the spatially-resolving integration of the charge, as well as means for displaying the charge that is integrated dependent on the position. The integrator circuit is assembled from discrete components. Thus, the transport of plasma impurities can be properly measured.

Abstract: A ventilation system comprises a seat, a first fan, and a second fan. The seat has an upholstery part that includes a shaped body. The shaped body has a bearing surface, a rear side opposite the bearing surface, a first opening extending generally from the bearing surface to the rear side, and a second opening. The first fan is coupled to the first opening and is configured to generate a first flow of air generally perpendicular to the bearing surface. The second fan is coupled to second opening and is configured to generate a second flow of air generally transverse to the first flow of air.

Abstract: An active head restraint for an automotive seat which includes a base component, a headrest support, and a gas bag module. The base component is connected to the seat. The headrest support is detachably connected to the base component. The gas module is integrated between the base component and the headrest support in such a manner that in a restraining event detected by sensors, the headrest support component is released from the base component by inflating a gas bag.

Abstract: The present invention deals with the problem of changing the design of the roof rails, which have hitherto been of a multipart design, in such a way that they can be manufactured in a simple manner and at a lower cost. This is achieved according to the present invention by the spar and the feet including one component, which is preferably formed by a deformed hollow chamber section. To achieve this, the hollow chamber section is deformed downward in a gentle arch at its end. The deformed bent section is cut off on the underside obliquely to the curved longitudinal axis of the section. The bottom of the hollow chamber section is then pressed in from below, so that an omega-shaped cross section is formed. The roof rail thus prepared has a consistently elegant shape, which does not reveal how it was made.