Framatome Gmbh

Creusot-Loire

Gerard Sevelinge

Jean-Claude Bourdonne

Jean-Claude Pido

Jean C Bourbonne

Device for the simultaneous positioning of a plurality of threaded connecting elements (1) carried by a supporting member (8) and intended for fastening a component (2) placed on an appliance (3), the component (2) having open-ended bores (5) for the passage of the threaded connecting elements (1), and the appliance having tapped holes (4) corresponding to the open-ended bores (5) and capable of receiving the threaded connecting elements (1), including provision for permanent checking and correction of the position of the axes of the threaded connecting elements (1) in relation to the axes of corresponding tapped holes (4), and of the horizontality of the supporting member (8), and a lifting beam.

Device for the simultaneous positioning of a plurality of threaded

The apparatus for screwing in and out studs (3) of large dimensions, particularly for fastening a cover (2) of a vessel (2) provided with threaded holes, comprises a system (13) which serves to balance the weight of the stud and is force pilot operated by an oleohydraulic means by electrohydraulic feedback control based on accurate measurement of the hydraulic pressure detected at the oleohydraulic means or the balancing load to be exerted by said oleohydraulic means in order to limit the contact pressure between the stud and the threaded hole, and which axially drives, over an adequate path, a mechanism rotationally driving the stud and a means for gripping said stud.

Apparatus for screwing in and out studs or bolts of large dimensions

The device for prestressing an assembly of screwed connecting members, which consists of at least two bolts or pins intended for fastening a member (1) closing off an orifice (2) and which comprises a set of pulling jacks (26, 43) for the bolts or pins, comprises a body (10) consisting of two superposed solid elements (20, 40), each carrying half of the set of pulling jacks (26, 43), the pulling jacks (26, 43) in each of the superposed elements (20, 40) being arranged according to an alternate relative axial offset.

Device for prestressing an assembly of screwed connecting members

The automatic positioning device for screwing and unscrewing a nut (9) on a screwing element (4) formed, for example, by a pin or a threaded rod comprises an externally threaded bush (24) for transferring the nut (9) and an arrangement for the axial centering and angular wedging of the bush (24) relative to the screwing element (4), to generate a continuous helical slope between the external threads (26) of the bush (24) and the threads (8) of the screwing element (4).

Positioning device for screwing and unscrewing a nut

Tension device for tightening and loosening bolts or pins, formed by a body having at least one jack (40) equipped with a piston (25). Each jack (40) is associated with at least two bolts or pins (3) placed next to one another for simultaneous tightening or loosening.

Tension device for tightening and loosening bolts or pins

A distributor wheel 20 comprises, downstream of each outlet aperture (24, 25) of its channels (22, 23), in relation to the direction of the projection of particles, a member (30, 33, 34) fixed for rotation with the wheel (20) and making it possible to form, at the end of the guide face of each channel (22, 23), a stable protective cushion composed of the particles themselves and extending the stable self-protection layer (28), and to eliminate the contact force between the particles and the wheel (20) before ejection and projection of the particles onto the target.

Wheel for a vacuum projection grinder

Device for projecting solid particles for a vacuum centrifugal grinder incorporating a rotationally driven distributor wheel (20) in which a plurality of ejection channels are formed. The particle-guiding face in each channel (21, 22) has a curvature (A) extending in the direction of rotation of the distributor wheel (20) and whose outline, calculated as a function of the friction coefficients of the materials in contact, produces the attachment to said curvature (A) of a stable self-protection layer (30) consisting of the particles themselves, with automatic regeneration of the layer as it wears. The invention applies, for example, to the grinding of cement or pulverized coal.

Device for projecting solid particles for a vacuum centrifugal grinder

Support structure for a solar collector consisting of two sets of bars linked by assembly nodes, a concave triangulated lattice (1) around the central node (10) positioned on the sighting axis (xx'), and a stiffening lattice (2) separated from the concave lattice (1) by struts (3, 6), the bars of the two lattices, positioned in a number of planes (P, Q, R) passing through the axis, constituting rigid half-trusses extending radially from a common central strut consisting of a column (3) positioned on the sighting axis (xx') and carrying at its ends the central nodes (10, 20) of the two sets of bars. The set of stiffening bars (2) is positioned on the outer side of the concave lattice (1) together with the central column (3), and the central node to which it is fixed consists of an extended base (20) forming an assembly component, fixed to the end of the central column (3) in a plane perpendicular to the axis and on which are arranged anchor points (21, 22, 23) for at least three pairs of bracing bars (81, 82) which meet two by two in three assembly nodes (A2, A4, A6) of the concave lattice (1) and each forming a triangle whose apex consists of the corresponding node (A2) and whose base consists of the assembly component (20) between the two anchor points (21, 22) separated from one another, to which the corresponding bars (81, 82) are attached.

Growing community of inventors

Montceau Les Mines, France

Gerard Sevelinge