Abstract: An orthopaedic attachment device (1) which can adopt at least two positions, an inoperative position and a locked position. The orthopaedic attachment device comprises two clamps (2a, 2b) mounted opposite each other through a resilient member, and held by a clamping rod along a median axis by through-holes. Each of the clamps (2a, 2b) comprises a body part that comprises a outer jaw (4b) and an inner jaw (4a), connected by a joining wall (5), and which defines an opening that is designed to accommodate a stiffening bar or a pin via an insert. The opening extends inwards from the clamp (2a, 2b) as far as the joining wall (5) towards a passage and a hinge region. In the inoperative position, the outer jaw (4b) is fixed, whereas the inner jaw (4a) is moveable inwards towards the resilient member.

Abstract: Pair of dynamic external fixation devices (100) for the reduction of fractures of bone fragments, said devices (100) being arranged on either side of a first bone portion traversed by a first pin (10) in a proximal position and a second bone portion traversed by a second pin (11) in distal position, while each of the dynamic external fixation devices (100) includes a first body (1) having a longitudinal axis profile (X, X?), having a proximal bore (5) passing through an axis (Y, Y?) in combination with the first pin (10), said first body (1) being embedded in a first coil spring (8), while said first spring (8) is nested in a second coil spring (12), mounted in conjunction with a second body mounted in conjunction on said first body (1), while the second body is mounted in conjunction with the second pin (11).

Abstract: An orthopaedic attachment device (1) which can adopt at least two positions, an inoperative position and a locked position. The orthopaedic attachment device comprises two clamps (2a, 2b) mounted opposite each other through a resilient member, and held by a clamping rod along a median axis by through-holes. Each of the clamps (2a, 2b) comprises a body part that comprises a outer jaw (4b) and an inner jaw (4a), connected by a joining wall (5), and which defines an opening that is designed to accommodate a stiffening bar or a pin via an insert. The opening extends inwards from the clamp (2a, 2b) as far as the joining wall (5) towards a passage and a hinge region. In the inoperative position, the outer jaw (4b) is fixed, whereas the inner jaw (4a) is moveable inwards towards the resilient member.

Abstract: Pair of dynamic external fixation devices (100) for the reduction of fractures of bone fragments, said devices (100) being arranged on either side of a first bone portion traversed by a first pin (10) in a proximal position and a second bone portion traversed by a second pin (11) in distal position, while each of the dynamic external fixation devices (100) includes a first body (1) having a longitudinal axis profile (X, X?), having a proximal bore (5) passing through an axis (Y, Y?) in combination with the first pin (10), said first body (1) being embedded in a first coil spring (8), while said first spring (8) is nested in a second coil spring (12), mounted in conjunction with a second body mounted in conjunction on said first body (1), while the second body is mounted in conjunction with the second pin (11).

Abstract: A shock absorber (1) includes a compression chamber (2) in which a piston (3) moves along a path of travel from a near end to a far end. The chamber includes a constant force mode bleed orifice (10) adjacent the far end and a series of progressive force bleed orifices (9a–9e) at spaced intervals between the near and far ends. An adjustment cylinder (12) has sloping arcuate apertures (13a–13e). As the cylinder (12) is rotated, one of the arcuate apertures aligns with the constant force orifice or the apertures align with the progressive force orifices in full or in part.

Abstract: A shock absorber (1) includes a compression chamber (2) in which a piston (3) moves along a path of travel from a near end to a far end. The chamber includes a constant force mode bleed orifice (10) adjacent the far end and a series of progressive force bleed orifices (9a-9e) at spaced intervals between the near and far ends. An adjustment cylinder (12) has sloping arcuate apertures (13a-13e). As the cylinder (12) is rotated, one of the arcuate apertures aligns with the constant force orifice or the apertures align with the progressive force orifices in full or in part.

Abstract: A shock absorber (1) having a longitudinal axis of rotation (XX′) comprises a shock absorber body (2), a principal piston (4), which is supported by a piston rod (5), and a principal compression chamber (3), in which the principal piston (4) slides. The piston (4) divides the interior of the chamber (3) into a front internal portion and a rear internal portion. The sliding occurs wit the compression of the shock absorber (1) from the front to the rear internal portion. Further, the shock absorber (1) includes an elastic return device (8), a volume compensation device (9), hydraulic fluid (7), and at least one rolling channel. The rolling channel is comprised of at least one portion of the internal surface of the peripheral wall of the principal compression chamber (3) and at least one portion of the external wall of the principal piston (4).

Abstract: A method and an apparatus for the combustion of liquid sulphur in a combustion chamber. The injection device for the liquid sulphur and the primary air comprises a double spraying arrangement : a simple mechanical spraying device in which the liquid sulphur is driven through a spray nozzle without the aid of an auxiliary driving fluid and a pneumatic spraying device in which a turbulent rotational primary air stream mixes with the relatively coarse spray produced by the spray nozzle through a constriction zone and into the combustion chamber, transforming the relatively coarse spray into a relatively fine spray. The fine spray enters the combustion chamber at the apex of a conical end wall of the combustion chamber and is driven into contact with the conical end wall due to the whirling action of the primary air. Secondary air is introduced along the lateral walls of the combustion chamber, in order to protect these walls of refractory material from the radiation heat produced during combustion.