Abstract: A telecommunity alarm system having a plurality of security surveillance modems that can be connected to a telecommunication network via an analog or digital subscriber terminal port, the security surveillance modems forming a group of a predetermined size. The security surveillance modems each have a first memory for storing telephone numbers of the other modems in the group, a second memory for identifying the particular modem and a programmable control unit. The modems are designed to dial automatically, in the event of an alarm, the other security surveillance modems belonging to the group and signal the alarm status.

Abstract: Magnetic separator for the purification of liquids with a tube which conducts the latter, contains balls or wire screens as magnetizable bodies and is surrounded by a coil for magnetizing the bodies. The tube contains, in the flow direction of the liquids over the major part of its length, balls and subsequently wire screens. A common coil is associated with the balls and the wire screens for magnetizing. The balls and the wire screens are connected to a common flushing line.

Abstract: A purification system for water to be vaporized in a steam generator of a nuclear reactor having a feedwater circulatory loop includes an electromagnetic filter having an inlet and an outlet connected in the feedwater circulatory loop, a line branching from the feedwater circulatory loop downstream of the electromagnetic filter in direction of feedwater flow therethrough, an ion exchange filter connected in the line, means for reducing pressure and temperature connected in the line upstream of the ion exchange filter in feedwater flow direction through the line, a shut-off valve connected in the feedwater circulatory loop upstream of the electromagnetic filter in the feedwater flow direction through the loop, and a connecting line extending from the feedwater tank to a location of the feedwater circulatory loop between the shut-off valve and the inlet of the electromagnetic filter.

Abstract: Electromagnetic filter apparatus and method for impure water including an elongated substantially vertically disposed vessel traversible by impure water that is to be purified, a charge of magnetizable ball-like pellets received in the vessel, electric coil means coaxially surrounding the vessel, the coil means being electrically energizable to produce a magnetic field, rinsing water supply means connected to the substantially vertically disposed vessel at the lower end thereof, rinsing water discharge means connected to the vessel at the upper end thereof, passage means having a multiplicity of openings distributed over the cross section of the vessel in a plane disposed transversely to the axis of the vessel at substantially the middle of the charge of ball-like pellets, a pair of water connector means, respectively, for supplying water to and discharging water from the vessel, means connecting the openings of the passage means to one of the water connector means, and respective lines extending from the end

Abstract: In a nuclear power station having a pressurized water reactor, blowdown water which is produced in the steam generators due to an accumulation of existing impurities, is not discarded but is returned to the circulation system through an electromagnetic filter, in combination with a mixed bed filter.

Abstract: An apparatus for adhering strips of predetermined length that previously have been severed from a running web of material to folded blank boxes which includes cutting the strips to length, advancing them by a conveyor seriatim past an adhesive activation station and then coordinating the leading edge of the strip with the arrival of the folded blank box at a roller assembly station where the strip is secured to the box and then discharged.