Abstract: Disclosed is a passenger vehicle, comprising a tubular metal frame, including two spaced vertical side members and an upper and a lower longitudinal member intersecting the vertical side members to define a window opening, at least the side members comprising a hollow cross-section and an integrally-formed bead portion projecting into the window opening; a pane of essentially transparent material positioned in the window opening and abutting against the bead portions; and an adhesive or other means for bonding the pane to the bead portions. The frame members may have a cross-section which is L-shaped, T-shaped or generally rectangular with an integrally formed protrusion.

Abstract: Apparatus for collecting solar energy comprises a collector having a solar-energy collector surface. The collector is mounted on a support and is pivotable between an exposed position in which the collector surface faces the sun and a substantially-horizontal sheltered position in which the collector surface faces the earth, thereby protecting the collector surface from the elements and facilitating access thereto for maintenance.

Abstract: A field sensor control mechanism for doors and the like has two or more insulated electrodes mounted at different levels in the leading edge of a door or the like. A first oscillating circuit is connected with one of these electrodes and a second oscillating circuit, separate from the first one and serving as a comparison circuit for the same, is connected to the other electrode. The two circuits have base oscillating frequencies which are either identical or differ only slightly from one another. The circuits are so coupled to one another that the oscillations of the first circuit vary as a function of capacitance changes taking place in the electrodes.

Abstract: A multi-hole injection nozzle for air-compressing direct-injection internal combustion engines includes a first nozzle needle which is hollow, and a second nozzle needle which is axially slidable in an axial bore of the first needle. The first needle can close one or more nozzle holes which are spaced from the tip of the injection nozzle and the second needle can similarly close one or more nozzle holes which are, however, close to the tip and which have respectively different cross-sectional areas.

Abstract: A process and a plant for the recovery of water from humid air are disclosed. Humid ambient air flows through an adsorber in which an adsorbing agent removes moisture from the air by adsorption. Subsequently, air heated by an air heater and delivered by a fan flows through the adsorber in order to recover by desorption the moisture from the moistened adsorbing agent. Thereafter, the water vapor-containing air is precooled in a counterflow heat exchanger and subsequently conducted into a condenser in which heat is extracted from it by means of a heat pump so that the water vapor condenses and is available in the form of liquid water. The air cooled and dried in the condenser is utilized in the counterflow heat exchanger for precooling the air fed into the condenser. The heat given off by the heat pump is supplied to the air heater in order to be utilized therein for heating the air flowing through the air heater.

Abstract: A multi-passenger vehicle such as a bus has a lateral entry and exit door which opens a stairwell. One or more passenger seats are arranged immediately adjacent to the stairwell. The passenger seat is oriented in such a manner relative to the longitudinal axis of the bus that the passenger either faces in the travel direction or in the opposite direction. A foot rest plate covers the stairwell when the door is closed. The foot rest plate is hinged about a horizontal axis extending across the longitudinal axis of the bus. In the upwardly tilted position the foot rest plate does not interfere with the free use of the stairwell for its purpose and in the closed position the foot rest plate makes the particular seat adjacent to the stairwell as comfortable as any other seat in the bus.

Abstract: This axle suspension system for a vehicle includes a stabilizer connecting the body and axle. The stabilizer is a generally rectangular frame made up of two opposed, U-shaped frame elements the distal ends of the limbs of which are connected together by flanges, preferably at the longitudinal central plane of the vehicle. One transversely extending side of the frame is pivotally connected to the axle, and the other is pivotally connected to the body and force transmitting elements connect the axle and one of said flanges and the body and the other of the flanges.