In an electronic theft detection apparatus the passage of a resonant circuit wafer 16 through an interrogation zone formed by transmitter and receiving antennas (30, 90) (32, 92) is detected by generating sharp pulses of electromagnetic energy to cause the resonant circuit wafer to resonate for a duration following each pulse. A receiver is provided with a switch (54), signal accumulators or filte...

An easy opening can and key combination, wherein the can has a circumferential score encircling the can body beneath the double seam attaching the body to the end member, the key comprising a handle having a jaw at one end with inner and outer jaw elements embracing the seam, the outer element extending below the seam and having an end alignable with the score in a position such that when the hand...

A method and a device, a gas chromatograph, for continuous, automatic air analysis. The gas chromatograph is provided with a pre-concentrating step (1) which, besides the function of concentrating those substances that are to be analyzed in an air sample, is also functioning as a purification step. Because of this, the air present in the sample can be utilized as carrier gas through column (2) and...

A method and a device, a gas chromatograph, for continuous, automatic air analysis. The gas chromatograph is provided with a pre-concentrating step (1) which, besides the function of concentrating those substances that are to be analyzed in an air sample, is also functioning as a purification step. Because of this, the air present in the sample can be utilized as carrier gas through column (2) and...

A device for grouping consumer packs with a non-circular cross-section (1) to form goods units is disposed in or adjacent to a packaging machine embracing a feed conveyor (2), which transports the packages towards a compartmented unit provided with partitions (6) movable across the feed conveyor (2). A grouping unit (13) is journalled so that it can pivot about a vertical axis at that end of the f...

A device for grouping consumer packs with a non-circular cross-section (1) to form goods units is disposed in or adjacent to a packaging machine embracing a feed conveyor (2), which transports the packages towards a compartmented unit provided with partitions (6) movable across the feed conveyor (2). A grouping unit (13) is journalled so that it can pivot about a vertical axis at that end of the f...

The invention refers to a device for a surface treatment tool (1), particularly for floor treatment, for flexible connection of the tool (1) with a shaft device (8). The invention enables the production of a joint connection device which is of a simple construction with regard to manufacturing and mounting as well as enables simple handling of the surface treatment tool which the arrangement is ap...

The invention is a procedure for regulating the temperature of a glass panel in an oven with little thermal inertia, wherein the glass panel is heated following a predetermined program while it is moved at a specific rate. The presence of the panel is checked together with its incremental forward movement upstream of at least one cell of the oven in order to correct thermal output regulation. The ...

A towing device for a target drone intended for mounting on a target-towing aeroplane, e.g. in a bomb fastening fitting below a wing, is provided with a winch 11 for a towing line 12 between the device 10 and the drone 13. The winch 11 is passive and only intended for letting out the drone 13. A parachute 15 releases the drone 13 with associated hit indicator 14 to the ground after finished towing...