Abstract: To display a temperature value in a passenger compartment (5), it is proposed to use a luminous pointer that is moved along a row of modules (7a, 7b . . . ) that are on or off. Values (9a, 9b . . . ) of this temperature are also marked on the panel (3), along this row. Depending on the temperature to be displayed, the pointer will be moved with a single module on for a first type of temperature values and two adjacent luminous modules on for a second type of temperature values that are intermediate between two successive values of the first type.

Abstract: A touch-sensitive interface (7) for a heating and/or air-conditioning device (9) of a motor vehicle (5) includes at least one heat-sensitive wall (11a, 11b) accessible to the fingers (13a, 13b) of a user and designed to be heated and/or cooled by a heating and/or cooling element (15) arranged behind this wall (11a, 11b) so that, upon contact with the wall, the user has a feeling of hot or cold.

Abstract: To display a temperature value in a passenger compartment (5), it is proposed to use a luminous pointer that is moved along a row of modules (7a, 7b . . . ) that are on or off. Values (9a, 9b . . . ) of this temperature are also marked on the panel (3), along this row. Depending on the temperature to be displayed, the pointer will be moved with a single module on for a first type of temperature values and two adjacent luminous modules on for a second type of temperature values that are intermediate between two successive values of the first type.

Abstract: The plates of the settling tank define counter-flow streams connected to the inlet of the settling tank and supplying parallel flow streams connected to the outlet of the settling tank. Deposits from these two types of streams are received in two corresponding collecting tanks. The invention is particularly applicable to the filtration of water.

Abstract: Particles are concentrated in a peripheral gas stream of a contaminated gas flow along a deposition length (38) of a centrifuge chamber (2). The longitudinal advance of the peripheral gas stream is then stopped in a separation length (40) in which its pressure is kept high enough by rotating blades (24) rapidly to ensure that said stream escapes to the outside via a removal opening (32) while a purified inner gas stream continues to advance longitudinally. The invention is particularly applicable to purifying smoke.