Abstract: A co-extruded safety contact strip includes at least one contact or switching chamber situated in a section or profile and containing contactor or switching strips. One end of the base of the section is pivotally connected to a first side part and the other end of the base can be form-lockingly locked onto a second side piece. A method for securing the safety contact strip is also provided.

Abstract: A safety contact strip for a closing edge includes an inner shell facing the closing edge and being formed by a coextrudate of a first electrically insulating plastic. An outer shell spaced apart from the inner shell is formed by a coextrudate of a second electrically insulating plastic. Switching chambers respectively retained by at least one web between the inner and outer shells are formed with the outer shell. Two switching layers spaced apart from one another are formed in each switching chamber by a coextrudate of a third electrically conductive plastic. An electrical conductor is embedded in each of the switching layers as a further coextrudate.

Abstract: A co-extruded safety contact strip includes at least one contact or switching chamber situated in a section or profile and containing contactor or switching strips. One end of the base of the section is pivotally connected to a first side part and the other end of the base can be form-lockingly locked onto a second side piece. A method for securing the safety contact strip is also provided.

Abstract: Measurement methods are known for determining the concentration of an ingredient in a body of ceramic or glassy material, in which the optical path length or the signal propagation time of a measurement wave penetrating the body of ceramic or glassy material in a measurement direction is determined and evaluated. Starting therefrom, in order to indicate a non-destructive method for determining a concentration of an ingredient in a body of ceramic or glassy material, which is also suitable for measurement in the production process of the body concerned, it is suggested according to one embodiment that modulated gigahertz radiation is used as the measurement wave.

Abstract: A safety contact strip for a closing edge includes an inner shell facing the closing edge and being formed by a coextrudate of a first electrically insulating plastic. An outer shell spaced apart from the inner shell is formed by a coextrudate of a second electrically insulating plastic. Switching chambers respectively retained by at least one web between the inner and outer shells are formed with the outer shell. Two switching layers spaced apart from one another are formed in each switching chamber by a coextrudate of a third electrically conductive plastic. An electrical conductor is embedded in each of the switching layers as a further coextrudate.

Abstract: Measurement methods are known for determining the concentration of an ingredient in a body of ceramic or glassy material, in which the optical path length or the signal propagation time of a measurement wave penetrating the body of ceramic or glassy material in a measurement direction is determined and evaluated. Starting therefrom, in order to indicate a non-destructive method for determining a concentration of an ingredient in a body of ceramic or glassy material, which is also suitable for measurement in the production process of the body concerned, it is suggested according to one embodiment that modulated gigahertz radiation is used as the measurement wave.

Abstract: A safety contact mat has an upper mat half and a lower mat half with respective mutually facing spaced apart conductive layers, which are to be brought into contact in order to close an electrical contact. At least one of the mat halves is formed by a flat coextrudate of a non-conductive elastomer, a conductive elastomer as the conductive layer, and of a conductive woven material enclosed between the elastomers.

Abstract: The invention relates to a safety contact mat having an upper mat half and a lower mat half with two opposite, interspaced, conductive layers, which are to be brought into contact in order to close an electrical contact. According to the invention, one mat half is formed by a flat coextrudate (1) of a non-conductive (2) elastomer, of a conductive elastomer (5), and of a conductive woven material (4) that is bordered by said elastomers (2,5).

Abstract: The invention relates to a safety contact strip (1) that is regularly used as a closing edge safely device in squeeze and shear areas, for example, gates, machines or the like, having at least two conductive switch layers (2,3) in a non-conductive closed switching chamber (4) located inside a profile (6) that forms an outer jacket (5). In order to enhance quality while preserving a relatively simple structure of said strip, the profile (6), the switching chamber (4) and the switch layers (2,3) are configured as a single piece having at least one built-in conductor (7,8). In order to ensure safe switching even in case of low switch loads and unexpected direction, the switching chamber (4) is kept free in a cross section by spoke-shaped webs (9,10,11). The invention also provides for a cap for closing the front side of the safety contact strip.

Abstract: A glass composition to be softened is fed to a heating zone and is shaped continuously into a cylindrical component in a deformation zone, and the cross-sectional geometry of the component is determined. A feed device, a heating device, and a take-off device are provided, and a glass composition is supplied continuously by the feed device to the heating device, where it is softened, the component being formed from the softened glass composition by means of the take-off device under formation of a deformation zone. To produce a component with only slight deviations from the desired cross-sectional geometry and to provide a flexible apparatus suitable for this purpose, the glass composition is locally heated or cooled in at least one deformation area, which extends over only a part of the circumference of the deformation zone, as a function of a determined deviation of the cross-sectional geometry from a nominal geometry.

Abstract: An auxiliary gas turbine in an aircraft is driven by adding dimethyl-hydrazine to Kerosine and producing propellant gas by adding HNO.sub.3 or N.sub.2 O.sub.4 as oxidizer. Additional Kerosine is injected into the resulting gas for matching the gas constant of that gas to the gas constant of regular combustion gas which normally drives the turbine.

Abstract: A gas turbine for starting an aircraft engine and for driving auxiliary equipment, being normally run by combustion, receives decomposition gases of hydrazine, selectively on a standby basis, whereby aircraft engine fuel is added to these gases, and the mixture is then fed to the turbine to drive the turbine without combustion.

Abstract: Two aircraft jet engines are associated respectively with two sub-systems each comprised of a gas turbine for starting one of the engines and driving a set of secondary power generators such as hydraulic pump and electric generator and an air conditioning unit. The two sub-systems are drivingly cross-linked so that either gas turbine can drive both sets. The air conditioning units as well as the gas turbines receive tapped air from the engine compressors, whereby the gas turbines may run with or without combustion. An emergency power pack may be provided, preferably in selective driving connection to one of the sub-systems to provide for the possibility of starting a gas turbine and driving, if necessary, the power generators of that sub-systems or furnishing hydraulic and electric power on a emergency basis when all sub-systems have failed.