A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A reference pattern adaptation device 2 includes a speech recognition section 18, an adaptation data calculating section 19 and a reference pattern adaptation section 20. The second groove and the third grooves provide transmission of a lubricant to the first bushing and the second bushing respectively. Each of the two inner flange holding lip has a connecting part which obliquely extends from the inner side wall toward an open mouth of the trim portion, and a main part which extends from an extending end of the connecting part obliquely toward the bottom wall of the trim portion, thereby defining a generally inverted v-shaped cross-section. A method comprises forming objects, moving said objects along a path directed towards an exit area, and acting on said objects with an operating fluid at least in a preset portion of said path, so as to allow said objects to be moved towards said exit area. The control and propulsion links are interconnected by said drive link, which is capable of conveying propulsive oscillatory motion to the propulsion link by means of a linear power actuator, and by the support link, which is pivotally connected a transom bracket about a substantially vertical axis.