Abstract: A sensor for measuring the difference between the velocity and/or position of a vibration-suppressing cylinder and that of a piston connected to a piston rod and moving back and forth inside the cylinder in a dashpot for motor vehicles. The sensor consists of a permanent magnet and of a winding in the form of a cylindrical coil and operating in conjunction with the magnet. The magnet is connected directly or indirectly to one of the mutually moving components and the winding is connected directly or indirectly to the other. The component that the magnet (5) rests against and the component that the winding (7) rests against constitute a complete circuit that carries the magnet's field.

Abstract: An automatic furnace comprises an actuator for an electric igniter. The electric igniter has a distinctly lower standard voltage, e.g., 120 V, than the network voltage, e.g., 230 V and is operated by the network voltage. The network voltage is fed into the power regulator before the igniter. The power regulator clocks the network voltage with an adjustable keying ratio, so that only part of the full wave trains of the network voltage becomes active at the electric igniter. In an advantageous embodiment, the keying ratio is variegated by the actual level of the network voltage.

Abstract: A sensor for measuring the speed and/or position of a piston in relation to that of the cylinder it moves inside of in a dashpot of shock absorber for motor vehicles. The sensor consists of a permanent magnet (10) connected to the cylinder (1) and of a sensor winding (9) in the form of a cylindrical coil that operates in conjunction with the magnet. The sensor winding has leads at the ends. Additional leads for a shorter winding component (7 and 8) extend out separately upstream of the ends of the sensor winding.

Abstract: A method and device for shaping tubular workpieces from thermoplastic placs is disclosed. In the method, the workpiece to be shaped is inserted into a mold, heat is applied from the interior of the workpiece to heat the workpiece to the softening temperature of the plastic, this temperature is maintained until the workpiece assumes the shape of the mold, and the workpiece is left in the mold until it has cooled off. A flexible heating core is used to apply heat to the interior of the workpiece. The heating core has an insulating jacket with a sliding layer on its outer wall and a heating conductor winding located within the insulating jacket. A stress relief extends lengthwise in the middle of the heating core and outward of the heating core at one end. A receptacle is provided at the other end of the heating core for the stress relief.

Abstract: A tubular filter element consisting of a filter leaf which is pleated and connected at both its fold ends to a hollow cylindrical filter body (F) both of whose front surfaces are sealed by end caps (11, 13), one end cap (13) of which opens, as a connection cap, the hollow core (10') for communication with a housing space (3) of a surrounding housing, the force flow guidance of the fluid to be treated takes place along the folds (10) through a tube (6', 5) which extends through the hollow core (10') of the filter body (F), rests on the fold edges of the filter body (F), is open at one end in the area of the fold range functioning as outlet or inlet (20), is tapered in the area of the fold range functioning as inlet or outlet (21) and forms a connection (5) for the recirculating flow of fluid coaxially to the connection cap (3) for the flow of fluid to be treated which cap establishes the housing communication.

Abstract: The invention concerns a vibration-absorber sensor for the semi-actively controlled chassis of a motor vehicle wherein the relative velocity of the wheel mass to the body mass is measured with a sensor winding and a permanent magnet and processed in a circuit.

Abstract: A process and system for low-temperature carbonization of oil shale, oil sands and similar oil-bearing solids includes low-temperature carbonization of oil-bearing solids in a high-pressure fluidized bed reactor in the presence of a substance selected from the group consisting of hydrogen and steam at temperatures substantially between 400.degree.and 600.degree. C. for producing low-temperature carbonization gas. The low-temperature carbonization gas is condensed in at least two stages for producing relatively higher boiling and relatively lower boiling oil fractions. The oil-bearing solids are peripherally mashed with the higher boiling oil fraction of the low-temperature carbonization gas, before introducing the oil-bearing solids into the high-pressure fluidized bed reactor. The oil-bearing solids mashed with the higher boiling oil fraction are returned to the high-pressure fluidized bed reactor.

Abstract: In a method for the production of cylindrically symmetric bodies with given radial gradient of the material properties, for example of the refractive index, at least two rod-shaped molded bodies consisting of materials with different properties are joined in parallel and, following lowering of the viscosity of both materials, the bodies are twisted many times in a spiral around a longitudinal axis, such that a desired radial gradient of the material properties arises, where metallic, semiconducting, or insulating materials may be used, and the viscosity is varied through changing the temperature or adding or removing a solvent.

Abstract: In a wound filter module with an areal or flat filter band with draining support and spacing band wound around a draining means, central hollow core (K), whose longitudinal edges are enclosed in a wound state in a sealing element (4,6,4',6'), the filter band and the spacing band (1,3) are connected, resting on one another in a coinciding manner, by their two ends to a closed, that is, endless band (B1, B2, B3, B4, Bn) which encloses a central hollow core (K) or a filter core (KB1; KB1,B2;KB1,B2,B3) with its inner side and which is wound around the latter in a spiral manner. Every further, closed filter band with spacing band encloses the particular filter element (K, B1) previously formed and is wound around the latter. The fluid to be filtered and also the filtrate obtained from the individual layers can penetrate both transversally as well as tangentially in the direction of the individual spiral windings (B1 to Bn) to the hollow core (K).

Abstract: In an integral filter (F) for separating fluid components which filter can be enclosed in a surrounding housing (1,2) with fluid connections (A1 l to A3, 10) the permeable tube jacket of which filter consists of several tubular filter elements (K1, K2) with different filter qualities whose cross sections are stepped in such a manner that a smaller filter element is surrounded by a larger filter element, optionally with formation of an intermediary space (Z1), and in which the two tube ends are enclosed by closure and connection adapters (15, 20, 21, 22, 27, 31) and can be adapted to fluid chambers (13, 14) of the housing, sections of the total filter (F) can be selectively tested for integrity, supplied with and emptied of fluid and filling substances via an intermediary space (Z1) between two filter elements (K1, K2) which intermediary space can be separately controlled and loaded from the outside.

Abstract: A replaceable, rectangular, flat, selectively permeable filter element (1) for the framelike section (27, 30) of a sheet filter device (20) consisting of metal and/or hard plastic for the filtration of fluids (liquid and/or gas) can be clamped in by its edge in a leak-proof manner and like a sandwich between a housing part (30) on the sediment chamber side and a housing part (27) on the filtrate chamber side and supported against the pressure gradient on a draining housing support plate (27), whereby the sediment chamber and the filtrate chamber are provided with connections (22, 25) for supplying and emptying the housing chambers.

Abstract: The sucker rod system in a deep well sucker rod pump consists of a plurality of unidirectionally reinforced composite fiber rods extending substantially parallel but not in contact with each other, the cross-sectional area of which rods is less than 1 cm.sup.2. This enables the advantageous material properties to be utilized to a high degree. The sucker rod system can be assembled on site. The individual composite fiber rods can be monitored when they are in the working position.

Abstract: There is disclosed an axially folded tubular filter element for the filtration of fluids. The ends of the radially extending folds are in abutment at the internal folds with a support core and in abutment at the externally facing folds internally with an outer support grid. The support has a plurality of perforations. The ends of the tubular filter element are enclosed by a cap which encloses the ends of the tubular filter element in a sealing manner. The outside of the support core which supports the internally facing fold edges has a series of outwardly extending corrugated sections with rounded corrugated outwardly extending ridges, and the said perforations are located in the valleys of the corrugations. The corrugated structure extends in a longitudinal direction, is relatively flat and runs in a circumferential direction. A drainage pathway is also supplied along the outer surface of the support core.

Abstract: An anchorage for a rod of fibrous composite material includes sleeve having a bore receptive of a rod, the bore being profiled substantially perpendicularly to the axis of the received rod and an element for widening the received end of the rod. The cross section of the bore is substantially similar to the cross section of the rod to be received, substantially constant along the length of the bore and greater than the non-widened cross section of the rod. A sealing compound completely fills the space between the rod, the widening element and the sleeve.

Abstract: A new phototropic glass in which the phototropic properties arise from precipitations of silver halide and which in the unirradiated condition is slightly tinted or completely colorless while showing a brown color in the light-exposed condition, comprises, in known phototropic glass compositions, an additional content of at least 0.001 wt % of TeO.sub.2 and/or Yb.sub.2 O.sub.3.

Abstract: There is disclosed tubular filter element for the filtration of fluids, which is equipped with an enclosing housing with an inlet and outlet or is insertable into such a housing. The filter element is cylindrical and consists of a plurality of pleated radially extending folds. The filter is built up in several layers and the junction is bridged through at least one flexible connecting blank of synthetic material engaging between two layers and durably connected tight against leakage cohesively or adhesively by two seams or connecting zones. The flexible connecting blank by having a section extending between longitudinal edge portions of junction form an open fold pointing radially outwardly and a fold web pointing radially inwardly of the filter element.

Abstract: Damping device for a check valve with a closure member movable by fluid flow, including means defining a chamber, a piston mounted and longitudinally movable in the chamber, a plunger connected to and movable with the piston, the plunger being engageable with a stop just before the closure member reaches a valve closing position thereof and thereby moving the piston in the chamber, the chamber being closed on all sides thereof and filled with fluid, the chamber having a cross section increasing in direction toward the closure member, and spring means for exerting a force on the plunger and the piston in direction towards the closure member.

Abstract: Damping device for a check valve in a pipeline traversible by a liquid, the check valve having a closure member movable by flow of the liquid into a position wherein it lies on a valve seat in the pipeline so as to close the valve, the damping device including at least two parts of which a first part is a cylinder and a second part a piston reciprocatingly received in the cylinder, one of the first and second parts being connected to the closure member and the other of the first and second parts being connected to the valve seat, the cylinder including means defining a depression closed at one end thereof and open at the opposite end thereof, the piston including a plunger substantially matching the cross section of the depression and disposed so as to project into the open end of the depression shortly before the closure member has reached the position thereof wherein the valve is closed, the outer surface of the plunger and the defining surface of the depression being so formed as to define a gap narrowing

Abstract: Shut-off device for a double-wall steam line extending out of a safety vessel of a pressurized water reactor includes a shut-off valve having a casing, the casing being directly connected to an end of a lead-through for the double-wall steam line, the casing being formed with steam inlet and outlet openings and with a further opening, and at least one of a safety and an exhaust gate valve having a casing, the last-mentioned casing being directly connected to the further opening.

Abstract: A check valve assembly has a damping device for liquid lines and includes a hollow cylindrical chamber, a valve seat, an axially movably supported closure member being movable between an open position of the check valve and a closed position of the check valve in which the closure member lies on the valve seat, a hollow cylindrical guide member having a shell defining an inner space, and a damping piston having two sides and being disposed on the outer periphery of the guide member. The damping piston is firmly connected to the closure member and axially movably guidable in the hollow cylindrical chamber. The shell has throttle openings formed therein at both of the sides of the damping piston for connecting the hollow cylindrical chamber with the inner space. Part of the throttle openings are in communication with the hollow cylindrical chamber in the vicinity of the open and closed positions of the check valve.