Abstract: Apparatus for controlling a heat generating device having automatic adjustment of water temperature to heating requirements, and also for protecting such devices from being switched "on" and "off" too frequently, includes a control relay or a main relay having a "pause" imprint contact for switching "off" and an "on" contact, as well as a chronometric device for measuring how long the heat generating device is switched "on" and for setting an "off" pause imprint interval which is inversely variable according to the measured length of time the heat generating device is switched "on".

Abstract: A compact fluorescent lamp including one lamp with one or more tubular lamp members, and an electronic ballast constructed as a unit separate from the foregoing, which constituting an adapter, is electrically and mechanically connectable with the lamp by means of a plug-in connection. In order to achieve the smallest possible length of the compact fluorescent lamp, the plug-in connection between the lamp and the ballast, extends in the direction of the lamp at least partially into the space surrounded by the lamp.

Abstract: A method for monitoring frozen products and an indicator for temperature monitoring of the frozen products using one or several liquids with various melting temperatures; the liquids are encapsuled in cavities of an indicator and are frozen in certain geometric patterns. During the melting process these liquids lose their frozen shape. The cavities are at least partially elastic-deformable, and the liquid is forced into certain geometric patterns by means of mechanic deformation of the walls. The deformation of the walls is accomplished by application of a stamp which has been cooled.

Abstract: A fuel tank, for a vehicle or heating plant, includes a flexible air container therein, forming a fuel space outside the air container. The air container seals the interior of the fuel tank to the exterior and the fuel vapors in the fuel tank are drawn off and directed into the engine and burned. The vapors can be so drawn off by the vacuum produced by the engine, or by a pump. Fresh air from the exterior is drawn into and through the air container and directed into the fuel mixture for combustion, clearing out any vapors that may have collected in the air container. A filter is controllably utilized for adsorbing, or absorbing the vapors, and fresh air is controllably drawn into the filter for clearing those vapors out and directing them into the fuel mixture for combustion.

Abstract: According to this invention, cold is conveyed into a cooling chamber by means of convectors, and fresh air of a higher temperature is supplied in a controlled manner so that the temperature decreases. To avoid power loss due to the quantity of heat supplied, the displaced cold air is channeled towards a heat exchanger in the condenser of the cooling machine. Since the fresh air which circulates is always above 0.degree. C., the humidity content of the fresh air supplied can be controlled and be filtered to remove odors.

Abstract: An ampoule is provided with openings and a flexible membrane, forming a cavity, in which medication is stored in liquid form. The membrane is extended into the front end of an injection pistol which has a spring loaded punch which upon release, empties the ampoule through the openings. The ampoule has a flat front plate which covers the front end of the injection pistol. The openings of the ampoule are formed as nozzles in short truncated cones arranged in circular fashion on the front plate.

Abstract: The cold indicator serves for the controlling of the cooling or freezing condition of foods, medicines and the like in an arrangement in which it is in heat conducting contact with the observed cooling or freezing goods; for the activating of the cold indicator, a mechanical force is utilized, which destroys a separating filament. The cold indicator consists of two opposite lying chambers having different volumes, between whcih a separating filament is arranged and there is a freezable fluid provided in the smaller chamber. Below the observed temperature, the fluid forms a cooling or freezing tablet, and activating the cold indicator is done by destroying the separating filament, and the table is brought into the larger chamber. If the cold indicator is thawed, then the cooling or freezing tablet irreversibly loses its shape and disperses in the larger chamber, which is visible from the outside and indicates that the cold indicator has been thawed.

Abstract: Structurally strong, investment quality gold articles of high troy weight, excellent color and revealing properties and the method of their production are described, including the formation of a structural base from an alloy containing not over 8% of a strengthening material such as chromium, titanium or vanadium, which can provide the required strength and hardness in low concentrations, and overlayment or "overaching" with a gold alloy coating in a manner such that both alloys are visible. The structural base provides the support, strength and resistance to corrosion in articles of various shapes, while retaining a high degree of gold fineness.

Abstract: A method for making easily openable foil packages. The method comprises the step of forming a longitudinal seam and a transverse seam intersecting with each other, thereby providing grip surfaces which, when pulled apart, break the seal. The apparatus for forming the seam comprises bifurcated tool elements which come together in two orthogonal steps. The package so formed by the apparatus operating in accordance with the method is also novel.

Abstract: A method and devices for indication of temperature in frozen products are disclosed. The method involves placing an indicator having a cavity partly filled with a fluid in the freezing equipment. The fluid is frozen, and the indicator inverted. If the freezing equipment malfunctions and the freezer warms up, the fluid will melt and flow down, indicating a malfunction. The present invention includes paired indicators for use with frozen products that may be moved around in the freezing equipment; fluids in the two indicators are frozen in positions 180.degree. apart, so even if the indicator is inverted, it is still possible to get a valid temperature indication.

Abstract: A safety tire for vehicles consists of a rim and an air-filled elastic tire concentrically fastened thereto. In order to prevent a premature destruction of this tire in operation, a circular support body is provided, rotatably supported on the rim inside the tire.

Abstract: The frame of a tennis racket is comprised of a U-shaped hollow section (1, 1a), made according to an injection molding process, open outwardly in the frame plane, which is formed of a connecting bridge (4) and lateral branches (31, 32) and which is rigidly nested into and covered by a countersection (30). Between the two sections (1, 1a; 30), reinforcement ribs (15, 49, 50, 51) and the holes (8) for the support sleeves (10) receiving the strings are connected to one of the two sections (1, 1a; 30) so as to form a single piece, the reinforcement ribs (15, 49) being attached to the support sleeves (10). In order to obtain a racket having an excellent rigidity to distortion and which is very easy to use in play, reinforcement ribs (15, 49, 50, 51) are attached to the support sleeves (10) and are connected both to the connecting bridge (4) of the U-shaped hollow section (1, 1a) and to the lateral branches (31, 32) of said hollow section (1, 1a).

Abstract: A mixer-unit is attached to the cold and hot water mains and serves to adjust the quantity and temperature of the water. The mixer unit is not fitted with an operating handle or lever, the adjustment of the water quantity and temperature is achieved by pivoting the water outlet about two independent axes of movement. Disc-shaped regulating elements serve for the independent adjustment of both the water quantity and temperature which are operable by means of a cam connected to the rotatable and pivotable water outlet.

Abstract: In a grip-less water mixer unit, the quantity of water outflow and the mixing temperature are controlled by pivot-mounting the water outlet about two independent axes in a valve body. The water outlet is coupled to two regulating elements of which, one serves to regulate the water quantity and the other the adjustment of the mixing temperature. In a first embodiment example both regulating elements are formed as cylindrical bodies rotatable in the valve body, and in a second embodiment example, both regulating elements are concentrated in a ball which is rotatable in the valve body.

Abstract: A procedure for the administration of insulin or similar long-term medicaments utilizing an elastic element, for example a membrane dividing a reservoir into two chambers, one of which holds the medicament and the other containing a temperature-dependent vapour pressure and the remaining liquid propellant gas. By means of the membrane, the medicament, permanently pressurized by the propellant gas, is injected into the body through an outlet opening. The invention seeks to achieve differing ratios of medicament dosage by providing for the external raising of the temperature of the propellant and thereby the pressure of the gas, and thus increasing the injected quantity at required time intervals. It is preferred that the dosage be dependent on the level of blood sugar in the body.

Abstract: A storage medium is disclosed which includes a plate having a plurality of taps arranged near the peripheral edges and on each surface thereof. Each tap is connected to a storage element. The taps are arranged near the peripheral edges of both sides of the plate in order to provide for an increased amount of storage of information in one plate. The plate may have interruptable lead lines between the taps and the storage elements to prevent erasure of information stored in the storage element. The plate is inserted into a holder fitting of a data processor for a cyclic-series read-out or recordation of digital information out of or into the storage elements on the plate. The storage elements located on each surface of the plate are used for storage of information. Labels may be used to identify the digital information stored on each surface of the plate.

Abstract: There is disclosed a process and apparatus for etching printed board circuits wherein etching of a printed circuit board is effected in turbulent flow of the etching solution and wherein concentration of the etching solution is maintained at effective levels by electrolysis.

Abstract: In electrolysis installations which possess in a common tank a plurality of anode and cathode plates electrically connected one behind the other, uniform supply to or flow through the individual cells is of greatest importance. According to the invention, the inflow, but also if possible the outflow, is placed below the liquid level, and a distributor pocket for uniform distribution of the liquid is connected between the inflow or outflow of the liquid and its entrance or exit from the electrolytic tank, respectively. For optimum adjustment of the chemical and physical constitution of the liquid, flow-independent measuring and adjusting of the liquid is achieved by a sensor which is arranged in a by-pass to the cycle line of the etching fluid between the etching tank and the electrolytic cell.

Abstract: Ammoniacal etching solution containing metal ions as the result of etching is withdrawn from an etching bath and while part of it goes to an electrolysis cell for removal of metal ion, the remainder goes back to the etching bath through a liquid jet pump in which it serves as the working liquid, while the pump sucks in from the electrolysis cell the anodically evolved oxygen. The thorough mixing of the oxygen into the etching solution performed by the pump results in oxidation so rapid that in many cases it becomes unnecessary to suspend catalyst particles in the electrolyte to accelerate the oxidative regeneration of the etching solution. Where use of such particles is still desired, the solution drawn from the etching bath goes through a cylindrical filter unit from which a filtrate is drawn off laterally for the electrolysis cell, while the remainder of the input goes to the jet pump.

Abstract: The addition of a small quantity of ammonium chloride to an ammonium sulf etching solution results in shortening the regeneration time of the spent etching solution when air or oxygen is bubbled through it to reoxidize it, and it also results in accelerating the etching rate. The extent of this improvement deteriorates with increasing chlorine ion content, disappearing when the chlorine ion content substantially exceeds 0.4% by weight of the solution and still greater chlorine ion additions are distinctly undesirable. The electrolysis of the etching solution to remove etched-away metal cathodically produces enough oxygen at the anode to prevent any substantial evolution of chlorine from the electrolytic action on the small chlorine ion content.