Abstract: A dry-running reciprocating compressor which has a drive mechanism with a crankcase, in which at least one crankshaft is mounted to rotate in bearings. The drive mechanism is operatively connected with at least one piston-cylinder arrangement of the compressor to compress air to the desired compression pressure. The intake air to be compressed is used for interior cooling of the drive mechanism, and for this purpose, the intake air is conducted through a filter into the interior of the crankcase. For specific cooling of especially critical parts and areas of the components and units in the interior of the crankcase, additional air conducting devices, such as air baffles, fins or the like can be provided. Preferably, the reciprocating compressor has three stages.

Abstract: The aim is to separate, by cooling and partial condensation of C.sub.2+, C.sub.3+ or C.sub.4 hydrocarbons contained in a gas mixture comprising, in addition to these components, even lighter constituents. For this purpose, the gas mixture is at first cooled until condensation of a smaller part of the hydrocarbons to be separated, after which the mixture is fed into the lower region of a fractionating column. A gaseous fraction is removed from the upper region of said column and is then again cooled and partly condensed in a heat exchanger, after which this partly condensed fraction is conveyed to the top of the fractionating column in the form of a return flow. In the case of C.sub.4 separation, the C.sub.4 hydrocarbons must represent more than 50% of the hydrocarbons contained in the gas.

Abstract: A key cap of a keyboard is guided at a frame 2, covers a switching element and a luminous element 5 and is provided with an operation section for the switching element 4 and with a transparent symbol zone 18 before the luminous element 5. The key cap consists of a flexible, transparent flat foil 8 fixed with a marginal section 9 at a frame 2. As operation section a body 15 is injection-moulded to the foil 8 at a distance from the marginal section 9. The foil 8 forms a joint section 21 between the marginal section 9 and the body 15, the printed symbol zone 18 being provided for between the body 15 and the joint section 21.

Abstract: In a process for the separation of hydrocarbons from a hydrocarbon mixture which optionally contains components boiling lower than methane, the crude gas stream is partially condensed and separated into a gaseous fraction and a liquid fraction. The liquid fraction is introduced into a rectification column wherein further separation is performed. The residual gas obtained at the head of the rectification column is partially condensed and introduced into a scrubbing column wherein the condensed portion of the residual gas is used as a scrubbing medium to scrub out low-boiling components from the separated, gaseous fraction. For covering the refrigeration requirement of this process, a portion of the residual gas from the rectification column, prior to being fed into the scrubbing column, is branched off and expanded for production of refrigeration. After heat exchange with process streams to be cooled, this portion of the residual gas stream is readmixed to the residual gas stream of the rectification column.

Abstract: A tool carrier for a punch or stamping machine in which the positioning piston-and-cylinder devices for respective actuating elements are disposed with a fixed center-to-center spacing from one another on opposite sides of a plane of symmetry and the tool holders are disposed in the tool carrier with their tools located symmetrically with respect to this plane so that individual tools can be operatively enabled by single actuating elements, larger tools by pairs of such actuating elements and even larger tools by two pairs of such actuating elements in symmetrical relationship.

Abstract: An external door handle for a motor vehicle with a cleaning device for removing dirt and slush which accumulates on the handle when the vehicle is driven on slushy or muddy routes or when the vehicle is stationary.

Abstract: The punch press with a control mechanism for the displacement of a punch tool carriage and a punch tool mounted therein comprises a machine frame, a punch tool carriage movable up and down in the machine frame, a die-bearing member having a workpiece receiving portion mounted on the machine frame positioned opposite the punch tool carriage, a stripper on the machine frame adjustable in height for different workpiece thicknesses and a control mechanism having a plurality of controlling element pairs including a plurality of control cams and associated control switches.

Abstract: The disclosure relates to a process as well as an apparatus for the separation of a gaseous mixture containing essentially hydrogen, methane and carbon monoxide, wherein the gaseous mixture is subjected to a physical low-temperature scrubbing step with liquid methane, as well as to subsequent separation of H.sub.2 from the loaded methane by means of stripping and/or expansion and subsequent regeneration of the loaded methane by CO/CH.sub.4 separation. In order to minimize the losses of CO, encountered during H.sub.2 separation and/or in order to raise the yield of CO, the H.sub.2 gas obtained during the stripping and/or expansion step is brought into contact with liquid methane.

Abstract: In an air outlet device, a closure flap (9) is pivotably mounted in a houg body (1). The closure flap can be tilted in front of an air passage opening (3) by means of an actuating part (14). To avoid the closure flap (9), in its open position, taking up a considerable amount of space in the air exit shaft (4) and in order to keep the number of components required small, the closure flap (9) is of circular ring segment-shaped design in cross-section. The pivot axis of the closure flap (9) lies in the center point of the radius of the circular ring segment shape. The actuating part (14) is molded onto the closure flap (9).

Abstract: An air outlet device is to grant in its closing position a tight closing e from whistling noises. This is to be achieved by simple means and despite component tolerances. For this purpose longitudinal gaps formed between a closure flap and seat edges before the closing process narrow towards that end of the closure flap which is remote from the actuating part. During the closing movement the closure flap is distorted elastically so that the longitudinal gaps close at first in the sections remote from the actuating part.

Abstract: An apparatus for determining the degree of water saturation of the hygroscopic desiccant of a disposable drying cartridge as a function of the variation in the dielectric constant of the hygroscopic material. The invention takes the form of a tubular capacitor disposed in the mass of hygroscopic desiccant material proximate the outlet of the drying cartridge, and of appropriate circuits for measuring the level of saturation of the desiccant material and for operating alarm and safety devices. A removable plug provides access to the cartridge mounted in a casing. The plug has a pair of electrical contacts acting to biasing position the cartridge in the casing and provide effective electrical contact with the capacitor.

Abstract: An air outlet device including an air outlet channel having an open front and being located near an actuating part is provided with a plug base for a lamp behind the actuating part in a light-transmitting acceptance chamber. The lamp is to be replaceable from the front side without having to remove the actuating part toward the front. For this purpose the acceptance chamber is provided with a passage opening to the air outlet channel. The plug base is combined with a guide bead which, in the operating position, extends through the passage opening into the air outlet channel and ends at the front edge thereof as a handle. The plug base can be pulled through the air outlet channel and the passage opening out of the acceptance chamber and then be reintroduced into the latter.

Abstract: The self-locking revolute joint can be adjusted at angles by turning an activation lever back and forth. It has a mount in which a bearing shaft rests rotatably in bearings, and supports an adjustment wheel which is provided with tooth profiles. The activation lever can be turned in both rotational directions around a turning axle resting in bearings in the mount; it has two swing-out carriers which do not engage with the adjustment wheel when the activation lever is in its central position; when the activation lever is turned, one of them engages with an adjacent tooth profile of the adjustment wheel and brings it to turn. Further, two locking arms rest rotatably in bearings at the mount and lock and adjustment wheel when the activation lever is in its central position. Each one of two radial cams arranged on the activation arm confunctions with a locking arm, via a release arm.

Abstract: In an electric manual switching device, a printed circuit board is to be protected from environmental influences. For this purpose, a foil continuously extending over the printed circuit board is provided in the switch housing between switching contacts and pushbuttons. The foil can be a flat component or a part shaped like a bag.

Abstract: An illumination device for a front panel with illuminated areas, the latter eing illuminated by an incandescent lamp sitting in a connection base located behind the front panel through at least one light guide. The connection base is placed behind the front panel so that the incandescent lamp points away from the cover member. The lamp extends behind the front panel to the light guides. To make the incandescent lamp easily replaceable without loss of light, a cover member is removably attached to the illumination device such that removal of the cover member permits ready access to the incandescent lamp/connection base.

Abstract: In a control device, especially for heating and ventilation systems in mo vehicles, comprising a rotatable control knob and a linearly movable setting member, a lever is provided for coupling the knob and member and converting rotational motion of the knob into linear movement of the setting member. To achieve this, the control knob 2 is provided with a guide slope extending at an acute angle to the axis of rotation. A shorter arm portion of the lever is controlled by the guide slope. A longer arm portion of the lever is actuated by movement of the shorter arm portion against the guide slope and acts upon a coupled setting member in a linear manner.

Abstract: A seatbelt lock is mounted to be movable as little as possible relative to the seat surface when the seat surface is adjusted in height or inclination. The seat has a longitudinal guide 20, 22, a device 24 for adjustment of height or inclination and a belt lock attachment 32. The lower end of the belt lock attachment 32 is affixed to the seat rail 22 of the longitudinal guide and carries a belt lock 34 at its upper end. The belt lock attachment has a lower part 38 linked to the seat rail and an upper part 40 linked to the seat carrier 26, the upper part being connected with the belt lock. One of these parts 38, 40 can move freely in a longitudinal guide formed by the other part. One part has at least one locking projection 60; and the other part has locking devices 46 interacting with the projection. By means of a safety piece 50, the two parts are held in a normal position permitting movement.

Abstract: For the separation of C.sub.5+ hydrocarbons from a gaseous stream containing light hydrocarbons, C.sub.1 -C.sub.5, and, in some cases, lower boiling components, e.g., hydrogen, the gaseous feedstream, under pressure, is cooled, partially condensed, and separated into a liquid fraction and a gaseous fraction. The liquid fraction is separated by rectification under a lower pressure into a product stream consisting essentially of C.sub.5+ hydrocarbons and a residual gas stream predominating in components lower boiling than C.sub.5. The gaseous fraction separated after the partial condensation is introduced into a recontacting column wherein C.sub.5+ components still contained in the gas are scrubbed out. The scrubbing step is performed with a partial condensate of the overhead product of the rectification. The loaded scrubbing liquid is then introduced into the rectification as reflux.

Abstract: In a process proposed for purification of a gas stream at elevated pressure by nitrogen scrubbing, the gas stream to be purified and the nitrogen scrubbing stream are initially cooled to low temperatures. The gas stream is then scrubbed with liquid nitrogen and the purified gas stream is mixed with cooled, high-pressure nitrogen to form a mixture in which nitrogen accumulates partly as a liquid phase. The mixture thus formed is then heated and the liquid nitrogen contained therein is evaporated. Prior to scrubbing, either the nitrogen scrubbing stream itself or a partial stream of the nitrogen scrubbing stream or another process stream under a pressure lower than the working pressure of the nitrogen scrubbing step is at least partly condensed and then pumped to a higher pressure.

Abstract: A locking slide switch is adapted to set a resistor depending on the length f travel. A key body has a row of teeth with which a pinion meshes. A locking push-button is provided on the shaft of the pinion. In order to make locking from both sides possible, a second pinion or an elongated pinion is guided in the row of teeth. On this pinion is provided a second push-button, which can also be blocked. An on-off switch is additionally provided.