Abstract: Method for detecting a change in the environment near at least one portion of a hoisting, traction or boundary cable which conducts electricity. The change in the environment is linked to the relative movement of at least one person, animal or object with respect to the portion. The method includes the step of detecting a variation in the capacitance of the portion. The variation is representative of the movement.

Abstract: This present invention is a device having a mechanical bearing formed by two coaxial rings, one fixed relative to the machine and the other rotating, between which at least one rolling element is moveably positioned, at least one non-conducting positioning arrangements secured to the fixed bearing ring, the positioning arrangements including at least one placement holder for at least one conducting element forming a first plate of a capacitor, at a distance from a conducting part of the rotating ring forming the second plate of the capacitor, and with the positioning arrangements attached to at least one partitioning arrangements, the partitioning arrangements being used to create a space between the two plates, thus forming a dielectric insulating medium, and to act as a sealed enclosure for this insulating medium by being in contact with a part of the surface of the rotating ring.

Abstract: This present invention concerns a device having a mechanical bearing formed by two coaxial rings, one fixed relative to the machine and the other rotating, between which at least one rolling element is moveably positioned, at least one non-conducting positioning means secured to the fixed bearing ring, the positioning means including at least one placement holder for at least one conducting element forming a first plate of a capacitor, at a distance from a conducting part of the rotating ring forming the second plate of the capacitor, and with the positioning means attached to at least one partitioning means, the partitioning means being used to create a space between the two plates, thus forming a dielectric insulating medium, and to act as a sealed enclosure for this insulating medium (7) by being in contact with a part of the surface of the rotating ring.

Abstract: The invention concerns a duplex superhigh-frequency telecommunications device.The quench oscillator at each station delivers a specific frequency signal frequency-modulated by the information to be transmitted, the carrier quench signal being used as a subcarrier of the information.Application to microwave telephone telecommunications.