Abstract: The present magnetic lock is operated by a key including control magnets. For this purpose a locking bar is radially shiftable in a locking cylinder in a housing. Magnetic rotors release or lock the locking bar which is spring biased toward the magnetic rotors. A spring biased control member is shiftable into a locking channel of the locking bar. The control member is equipped with entraining elements which engage the locking bar.

Abstract: The present pressure rod for a coke discharge apparatus is constructed of hollow sectional components or tubular members interconnected with one another, whereby a lightweight structure is achieved. The hollow sectional components or tubular members are interconnected in such a manner that a coolant may flow through the structure of the pressure rod. Flexible coolant supply conduits for the inflow and outflow of coolant are connected to the hollow sectional components of the pressure rod.

Abstract: Apparatus for rinsing body cavities includes a double tube pump (1) for simultaneously pumping fluid into a storage vessel (4) for subsequent feed through a catheter (K) and pumping discharged fluid from a measuring vessel (9) at the same rate, so that surplus fluid with the discharge can be measured. The measuring vessel has sensors (11,12) which switch on and switch off the pump when fluid in the measuring vessel falls or rises to predetermined levels. An additional pump (13) may be provided for the surplus fluid extraction. The double tube pump comprises a pair of parallel identical tubes (24a, 24b) with joined end connections (34,35) in a stator (21) which are squeezed by common rollers (32) mounted in a rotor (27).(FIG.

Abstract: The present fine tuning device comprises a fine tuning shaft mounted concentrically around a main channel selecting shaft supported in a chassis base. A plate spring member is disposed on the chassis for thrust biasing the fine tuning shaft. A gear member is arranged for transmitting the fine tuning movement from the fine tuning shaft to a fine tuning screw. The fine tuning shaft is provided with a radially extending flange and a peripheral gear, and the transmitting gear member is provided with a first gear engageable with the peripheral gear of the fine tuning shaft and a second gear engageable with the fine tuning screw. The plate spring member supports the rotating transmitting gear member whereby the axial direction of movement may be changed or shifted by deformation of the plate spring member.

Abstract: A rotor blade has a neck section which connects the blade proper to a rotor ead at the blade root. The neck section is flexible against bending in the lead-lag direction and in the flapping direction. A carrier member is located alongside or inside the neck section but spaced from the neck section. The carrier member is resistant against bending at least in the lead-lag direction or in the flapping direction. The carrier member is rigidly connected at its one end to the blade proper. A layer of a damping material is operatively interposed between the carrier member and the neck section, preferably at the blade root end of the neck section, whereby blade vibrations preferably in the lead-lag direction are damped and substantially prevented from entering into the rotor head.

Abstract: The present electronic indicator or display device is equipped with adjustable upper and/or lower limit value markers to provide a respective alarm if such limit values are exceeded or not reached. The display itself comprises an electronic circuit and optical display elements such as light emitting diodes connected to the display circuit. An input to the display circuit is adapted to receive rated or limit value input signals which are displayed as respective markers and the position of which is adjustable. A time multiplexing circuit controls the timed sequence of the signals supplied to the display elements. A comparator compares the measured signal value with the rated value or values and monitors the proper function of the system.

Abstract: The present four-blade rotor structure comprises two pairs of rotor blades. iametrically opposite each other located blades form a pair and the blades of a pair are connected to each other by coupling belts which are tension resistant and torsionally yielding. One coupling belt extends substantially horizontally whereas the other extends substantially vertically. The coupling belts are centered in the rotor head by respective centering bodies. The centering bodies are connected to their respective belt by bearing elements capable of taking up pressure loads while simultaneously permitting a blade angle adjustment. In a modification the bearings may be slide bearings.

Abstract: The present bottle closing device is intended especially for a one time use, for example, in medication bottles. The closing device is constructed to function as a guaranteed seal and may enclose a sealing gasket or stopper received in an elastically yielding claw ring which has claws held engaged with a bottle mouth rim by a closing cap provided with a so-called rip-top or flip-top which is ripped away for opening the bottle and breaking the seal.

Abstract: A high efficiency vertical tail unit is combined with a variable wing geory for large angles of attack, primarily for all-wing aircraft such as delta-type craft. The vertical tail unit is hinged for adjustment about an axis substantially parallel to the longitudinal axis of the fuselage. The outer wing portions are connected, at an angle, with a vertical tail unit which is directed vertically downward in its normal position. The assembly comprising an outer wing portion and a vertical tail unit is rotatable about the parallel axis whereby three different wing types may be realized in the same craft.

Abstract: The leakage flow of a pressurized medium in gap type seals is controlled by a suction device at the sealing location of the gap seal. The suction device comprises a jet pump. The jet pump is driven by the pressurized medium in the gap seal or by an externally supplied fluid medium.

Abstract: A haemofiltration apparatus includes a combined blood pump (1a) and filtrate pump (1b). The pressure on the inlet side of the filtrate pump may be adjusted by a cone valve (14) mounted on a diaphragm (12) which opens to admit air when the inlet pressure falls below a predetermined value which is set by a valve spring (16) provided with an adjustment screw (15). The other side of the diaphragm may be connected to the atmosphere or to an air trap (6) in the blood pump circuit.

Abstract: The present hingeless rotor structure, especially for rotary wing aircraft, omprises at least one pair of rotor blades, whereby the blades of a pair are arranged diametrically opposite each other. The blades are secured to a rotor head for proper blade angle adjustment. Each blade has its root or radially inner end secured in a blade root sleeve which in turn is held in a respective blade angle bearing bushing. The blades of a pair are interconnected by a tension resistant, torsionally yielding member. One bearing which is pressure loadable in the direction of the longitudinal blade axis is provided for each blade pair between one of the respective blade root sleeves and the corresponding blade angle bearing bushing. The tension resistant, torsionally yielding member is capable of a certain stretching or elongation during operation.

Abstract: The present gang cutter for crankshaft milling machines comprises a plurality of disk cutters spaced from one another on a common, rotational axis by spacers which may be bearings. The gang cutter is divided into a plurality of partial units corresponding in number to the number of disk cutters. Each unit comprises a disk cutter and a center drum member. Adjacent units are operatively connected to each other whereby an adjustment disk may be inserted between adjacent units. A certain number of drum members corresponding to the number of bearings is constructed as bearing rings.

Abstract: A floating knife of a boring tool for machining the inner surfaces of cylinders, has a cutter member and a support element arranged on both sides of the floating knife. The support elements are arranged for cooperation with the respective cutter member. The support elements are arranged behind the cutter member as viewed in the feed advance direction. The support surface of the support element is spaced behind the cutter member in the floating direction of the floating knife by a spacing corresponding to the extent of the allowable yielding of the cutter member in the radial direction, whereby the cutter member is able to machine the inner surface of a cylinder even if the latter has cross-apertures in its wall because the support member limits the radial floating of the knife to a safe extent.

Abstract: In peritoneal dialysis apparatus, flushing liquid is pumped into a supply vessel (4) which is then emptied into the body cavity through a valve (5) and a catheter (6). The supply vessel is then refilled while the cavity is drained back through the catheter into a receptacle (11) of the same weight and dimensions as the supply vessel. The supply vessel and receptacle are suspended at opposite ends of a balance beam (12) and when they are in balance after the receptacle has been filled, a valve (8) isolates the receptacle from the catheter and surplus fluid from the cavity is collected in a measuring vessel (15) through a valve (9), the receptacle being emptied through a valve (10).

Abstract: The moment sensitivity of shear beam transducers is mechanically compensated to make such transducers relatively insensitive to load applications which are off-center relative to an optimal point of load application. The compensation is made by gradually increasing the depth of a load application hole in the transducer. The load application hole extends in the direction of a load application axis and its depth is increased until said moment sensitivity becomes substantially zero. In other words, the load sensitivity becomes substantially independent of the location of the point of load application. A further linearization of the moment sensitivity is accomplished by placing inserts into the load application hole.

Abstract: The present cleaning tool for electrical or gas water heaters provides a scraper and a member for pulling out of the heater the scraped off scale or rust or the like that tends to deposit on the internal heater walls and bottom. In a preferred embodiment of this tool the scraper is secured to one end and the pulling out member is secured to the other end of a common handle.

Abstract: A discharge lamp is ignited in every half cycle in its operating system including a discharge lamp operating circuit provided with a low frequency alternating current power source, a single winding type current limiter. The discharge lamp is connected to the power source through the current limiter and a series circuit including a high voltage output generator is connected in parallel to the discharge lamp. The high voltage output generator operates during the lamp operation for reigniting the discharge lamp. The voltage of the low frequency alternating current power source is set to less than the required reignition voltage of the discharge lamp during its operation, whereby the lamp current stabilizer size is minimized. Further, a filament preheating circuit is arranged to use current derived from the high voltage generator. The filament preheating circuit is combined with this operating circuit and so is a time delay for assuring a stable operation.

Abstract: The present servomotor has a working piston in a piston cylinder. The worg piston is connected to a spindle having a relatively high pitch. The spindle is attached at one end thereof to a control disk system comprising three control disks. The two outer control disks are rigidly connected to the spindle, and the central control disk is connected to a digital stepping motor. The central disk is arranged between the two outer control disks so that the central disk may rotate substantially free of play, whereby the rated position of a stepping drive motor corresponds precisely to the actual position of a linear output member, such as a piston rod.

Abstract: A case or wallet has a lid and a frame forming the casing proper provided with a covering held in position in the frame by a double clamping action between the frame and an insert which in turn is held in position by tongues or lugs bent out of a leg of the frame against the insert so that a clamping action along the edge of the covering is accomplished along two lines extending substantially in parallel to each other around the entire edge of the covering.