Abstract: The invention proposes an analogue display member (10) fitted to a timepiece, of the type including a main body in which an arbor hole is arranged, characterized in that the main body is made of silicon based crystalline material. The invention also proposes a timepiece provided with such a display member (10). The invention also proposes a method of fabricating analogue display members (10) to be fitted to timepieces, each analogue display member (10) including a main body, characterized in that it includes at least one step of micro-machining a wafer of silicon based crystalline material to form at least one main body in said material.

Abstract: A device for frictional inter-engagement between two mutually movable parts (13, 14). A lever mechanism exerts counter-directed pressing forces towards both parts to transfers movement between them. A lever (25) has a free lever end (27) contacted by a first (13) of the parts, and opposite to the free end a part-cylindrical convex surface (31) journalled in a part-cylindrical concave bearing surface (33). In order to eliminate the risk of jamming of the lever due to excessive surface pressure, it is journalled with rolling bodies, preferably cylindrical bodies (34).

Abstract: The drive shaft drive mechanism of the invention converts straight-line motion into rotary motion, or rotary motion into straight-line motion. The mechanism is provided with a pivot-pin connected to one or more pistons, an internally-toothed ring gear, a planet gear in contact with the ring gear, and an eccentric disk driven by the planet gear, such that the pivot-pin connected to the pistons have a straight-line motion, and the conversion of the direction of the motion is achieved without the insertion of a crank shaft.

Abstract: Disclosed is a line clamping device which may be remotely and repeatedly operated to clamp line passing through the device. Increasing pressure acting on a piston in the clamp housing moves slips to a position clamping the line while compressing a spring. When pressure on the piston is reduced, the spring moves the slips and piston to back to a position not clamping line.

Abstract: Motive power device for a delivery device located at the base of an upright silo in the shape of a worm screw rotatable about its longitudinal axis, which is swivelable around a central bearing across a circular annularly shaped bottom surface of the silo with the help of a step motor, which consists of two identically designed shoe brakes self-locking counter to the drive direction and engaging at an abutment assigned to the silo wall, of which the one is linked rigidly and the other one displaceably through a controllable power cylinder in the area of a support bearing of the worm and cooperates with the abutment located at the silo wall.

Abstract: A clutch arrangement for coupling together two mechanisms. A first member comprises a lever arm having a partially cylindrical section, the partially cylindrical section having secured to a planar surface a gripping element extending parallel to and spaced from the axis of the partially cylindrical section. The first member further comprises a guide in which the partially cylindrical section may rotate. The second member comprises a recess adapted to receive the guide, and a gripping surface adapted to cooperate with the gripping element of the first member. The first and second members are so dimensioned that when the first and second elements are coupled, the planar surface of the partially cylindrical section and the planar gripping surface of the second member are spaced from and parallel to one another. The gripping element bears against the gripping surface, thereby restricting rotation of the lever arm in at least one direction.

Abstract: A supersonic vibration driven motor comprising a supersonic oscillator and a mass rotationally driven thereby. The oscillator is provided with a vibration disc secured thereto on an end face thereof opposite to the mass to be driven. The mass is integrally formed with a plurality of plate-shaped resilient vibratory pieces annularly arranged on the end face opposite to the oscillator and axially extending at a predetermined angle of inclination relative to the axis of the mass, the vibration disc and vibratory pieces being located so as to come in contact with each other at their end portions, whereby vibratory displacement of the supersonic oscillator is transformed into rotational movement of the mass by way of flexible deformation of the vibratory pieces. Alternatively, the resilient vibratory pieces may be formed integrally with the vibration disc.

Abstract: A coupling for use with two relatively movable members to transmit force between the members comprising a resilient coil element having convolutions positioned between the members and a solid core element positioned within the convolutions of the resilient element, the resilient element being positioned such that relative movement of the members urges the convolutions into frictional engagement with both of the members. The solid core element is of a size such that when frictional engagement of the members with the convolution occurs, the convolutions are prevented from being distorted beyond their elastic limit to thereby cause permanent set of the resilient element.