Abstract: A device for fixing an object to a support comprises, in a plate forming part of the object, at least one hole for a fixing to pass through. A gasket is applied to the plate at the location of the hole, and a bearing washer is disposed between the gasket and a head of the fixing. An immobilizing device associated with the bearing washer opposes movement of the bearing washer parallel to the plate and to allow movement of the bearing washer perpendicular to the plate. A confinement device associated with the gasket prevents the gasket escaping from the space between the bearing washer and the plate.

Abstract: A switch mechanism comprises, movably mounted between a fixed yoke and at least one fixed contact, at least one conductive contact arm which is articulated to the fixed yoke, which is itself conductive. The arm is controlled by an operating member available to the user to assume one or other of at least two positions in one of which it bears against the fixed contact through a bearing area and in the other of which it is spaced from the latter. A double pivot is used for articulating the conductive contact arm to the fixed yoke, which comprises two separate pivoting areas parallel to each other, one for each of said two positions of the conductive contact arm. The conductive contact arm itself comprises two distinct contact areas for cooperating each with a respective one of the pivoting areas.