Abstract: A display device for a bottle includes a pedestal, and a display panel for holding and retaining the bottle. The display panel is formed of two transparent shells extending upwardly from the pedestal, each shell being provided with a recess and being moveable, with respect to the pedestal, between a closed position in which the shells are adjacent and in which the recesses together from an internal cavity the shape of which is complementary with the shape of the bottle, and an open position in which the shells are spaced from each other.

Abstract: Display device for a bottle, comprising: a pedestal, and a display panel for holding and retaining the bottle, said display panel being formed of two transparent shells extending upwardly from the pedestal, each shell being provided with a recess and being moveable, with respect to the pedestal, between a closed position in which the shells are adjacent and in which the recesses together form an internal cavity the shape of which is complementary with the shape of the bottle, and an open position in which the shells are spaced from each other.

Abstract: A proximity detector including a reference oscillator and a measurement oscillator, the frequency of which depends on the proximity of an object, particularly a metal object. A detection counter value A, which is controlled by the frequency F of the measurement oscillator, is compared to a set point counter value B to create the output signal. The set point counter value B0, which is determined during the calibration operation, is corrected by a quantity C that depends mainly on the difference of the measured temperature &thgr; compared to the calibration temperature &thgr;0. The proximity detector may find particular application to the detection of ferrous or nonferrous objects by universal or selective, inductive or capacitive detecting elements.

Abstract: A proximity detector comprising a reference oscillator and a measurement oscillator the frequency of which depends on the proximity of an object, particularly a metal object.

Abstract: An oscillator 12 outputs a constant frequency as a metal object is brought close and this frequency forces oscillation of an oscillating circuit 11 which is sensitive to this metal object, at a level significantly below the critical natural frequency of the oscillating circuit. The oscillating signals S1, S2 are applied to the two inputs of a phase detector 15, such that they can be changed over by means of an inverter device 17, so that the detector can be configured in ferrous mode or in non-ferrous mode.

Abstract: A universal inductive proximity detector including an oscillator, whose oscillating circuit is powered by a current source. A fixed frequency master oscillator 16, which controls the current source 18, is coupled to the oscillator 10 so that the current source excites the oscillating circuit with a pulsed direct current.

Abstract: An inductive proximity sensor has a resonant circuit including a sensing coil and driven by an oscillator at a predetermined frequency. To sense selectively ferrous and non-ferrous objects, the excitation frequency is a subcritical excitation frequency and discriminator logic is provided to process a phase-shift signal and a damping signal.

Abstract: A proximity sensor includes a coil for sensing metal objects which are part of an oscillatory circuit and an oscillator which drives the oscillatory circuit at a constant frequency. A tuning device is connected in parallel with the oscillatory circuit. The tuning device is a variable gain amplifier with feedback via an inductive or capacitive impedance.