Abstract:
The pulley comprises an inner portion (42) mounted on a bearing and an outer portion (42) having a continuous outer surface (40a) in contact with a belt or a chain. The inner and outer portions (42, 40) are made in one piece. The pulley further comprises stiffening means (46) of the outer portion coming into contact with a bore (40b) of said portion.
Abstract:
L'invention concerne un dispositif (1) de traitement d'un flux de métal liquide comprenant une poche de traitement (2) qui comporte des moyens de raccordement (11, 12, 13, 14) à au moins une goulotte d'alimentation (15) en métal liquide et à au moins une goulotte d'évacuation (16) du métal liquide, des moyens d'injection (22, 22a, 22b) d'un gaz de traitement dans le métal liquide disposés dans au moins une paroi latérale (32, 33) de la poche (2) et situés dans la partie amont (23) du compartiment de traitement (20) de la poche (2), et au moins un premier moyen de filtration (40) dans sa partie aval (24). Les moyens d'entrée et de sortie du métal liquide comprennent chacun au moins un orifice (9, 10) qui est positionné de manière à se trouver entièrement sous le niveau (26) du métal liquide lors du traitement, afin d'empêcher l'introduction d'air ambiant dans le compartiment en cours de traitement. Ce dispositif est compact et permet de traiter par voie gazeuse et par filtration un flux de métal liquide circulant dans des goulottes.
Abstract:
This ball bearing (1) forms an axial force transmission member and comprises an inner ring (3) and an outer ring (4), and a single series of balls (6) placed in a rolling chamber between the inner ring (3) and the outer ring (4). A first ring (4), amongst the inner ring (3) and the outer ring (4), forms a travel track (411) in a section of a sphere centred on a geometric point (C4) belonging to an axis of symmetry (X 4 ) of this first ring (4). The first ring (4) supports a seal (11 ) insulating the rolling chamber relative to the outside. The second ring (3), amongst the inner ring (3) and the outer ring (4), is provided with a sealing zone (314) designed to interact with the seal and in the shape of a section of a sphere centred on a second geometric point (C 3 ) belonging to an axis of symmetry (X 3 ) of the second ring. The radii (R 3 , R 4 ) of the sections of a sphere are different. In the installed configuration of the bearing, the first geometric point (C 4 ) and second geometric point (C3) are superimposed and offset axially, along the axis of symmetry (X 3 ) of the second ring (3), relative to the series of balls.
Abstract:
Double chamber syringe comprising a first chamber (10) defined by a first cylinder (12) closed at one end by a first wall (13) wherein is provided an opening (15), and at its other end by a first sliding piston (14). Said syringe further comprises a second cylinder (17) which is coaxial and internal to the first cylinder and fixed by its first end to the first piston and closed at its second end by a second wall (18), and a rod (16) coaxial and internal to the second cylinder and fixed to the first wall by its first end, and slidingly traversing the first piston (14) and supporting at its other end a second piston (19) sliding into the second cylinder. Thus, a second chamber (11) is defined by the second cylinder, the second piston and the second wall, the volumes of both chambers varying simultaneously when the second cylinder is displaced with respect to the first cylinder. Application for medical syringes.
Abstract:
A bearing assembly is for a mechanism including a housing and a rotatable shaft disposed within the housing. The bearing assembly includes a sleeve disposeable within the housing and having an inner circumferential surface defining a bore and a radial surface extending radially inwardly from the inner surface. A bearing is disposed within the bore and includes inner and outer races and rolling elements disposed between the races, the inner race being coupleable with the shaft such that the shaft and the inner race rotate as a single unit. Further, a biasing member biases the outer race generally against the sleeve radial surface or a housing radial surface to prevent axial displacement of the outer race during shaft rotation. Preferably, a retainer couples the biasing member with the outer race to retain the bearing and the biasing member within the bore when the assembly is separate from the housing.