Abstract: The invention relates to a peristaltic pump in which a case is formed by a dimensionally stable supporting frame (1) and by a tube reception device (2) formed thereon by clipping. A rotor (3) provided with three rotatable transport rollers (33a, 33b, 33c). Said tube reception device (2) is provided with a tube bearing body (25) which forms a bed for the tubes on the internal surface and comprises two legs (2a, 2b) on the ends thereof. The tube flexible sections (43) are compresses by said transport rollers (33a, 33b, 33c) in order to ensure the peristaltic conveyance of a medium. The two legs (2a, 2b) are elastically deformable in a radial direction in order to be elastically adaptable on the supporting frame (1). The bearing body (25) is substentially omega-shaped and provided with uniform input and output areas which ensure a medium continuous low-pulsed peristaltic conveyance.

Abstract: A hose cartridge for a peristaltic pump comprises a cartridge housing provided with a lateral recess. The recess is delimited at least partially by an element having essentially the shape of a segment of a circle. A roller wheel of the peristaltic pump can engage that recess once the cartridge is attached to the peristaltic pump. The cartridge housing is provided with two support arms, and a groove extends from one of the support arm along three outer side faces of the cartridge housing to the other support arm. The ends of the support arms are provided each with a hose take-up member for retaining stoppers attached to a hose section. Such a hose cartridge is of very compact design ensures an easy handling.

Abstract: A tuneable frequency translator is disclosed having electrical circuitry mounted to a circuit board. The circuitry is designed to provide a phase-locked loop with a resonator. Compliant material is positioned between the resonator and the circuit board. Operably coupled to the resonator is at least one passive device that is short-circuited by an electrically conductive lead. The resonant frequency of the frequency translator can be changed by severing the electrically conductive lead, and thus activating the associated passive device.

Abstract: A tuneable frequency translator is disclosed having electrical circuitry mounted to a circuit board. The circuitry is designed to provide a phase-locked loop with a resonator. Compliant material is positioned between the resonator and the circuit board. Operably coupled to the resonator is at least one passive device that is short-circuited by an electrically conductive lead. The resonant frequency of the frequency translator can be changed by severing the electrically conductive lead, and thus activating the associated passive device.

Abstract: A hose cartridge for a peristaltic pump comprises a cartridge housing provided with a lateral recess. The recess is delimited at least partially by an element having essentially the shape of a segment of a circle. A roller wheel of the peristaltic pump can engage that recess once the cartridge is attached to the peristaltic pump. The cartridge housing is provided with two support arms, and a groove extends from one of the support arm along three outer side faces of the cartridge housing to the other support arm. The ends of the support arms are provided each with a hose take-up member for retaining stoppers attached to a hose section. Such a hose cartridge is of very compact design ensures an easy handling.

Abstract: A connector for a double-sided, printed circuit board. The connector has a body defining a housing for accommodating a microphone module, first conductors equipped with an area for electrical connection to a complementary connector and with an area for contact with a track on the first face of the board, and second conductors connecting the microphone to the board. The body has a space for accommodating the board, where the space is defined between the electrical connection areas of the first and second conductors. Each contact area of the second conductors is in contact with the second face of the board. The microphone module is arranged, with respect to the space for accommodating the board, on the same side as the areas for making contact between the second conductors and the board.

Abstract: A method for extending the life of the attachments that attach blades to rotors, particularly for aerojet engines. Such a method is notable in that it employs intensive ultrasonic peening of the grooves and of the roots of the blades, this peening being performed with an Almen intensity at least equal to F8A, so as to increase the compressive prestress in the contact surfaces without increasing the roughness of these surfaces.

Abstract: The invention relates to a method for the ultrasonic peening of annular recesses for the attachment of blades to a rotor rim, these recesses including a blade introduction opening. According to the method, a plurality of beads is placed on a vibratory surface of a sonotrode, arranged in an intermediate position in a sleeve having opposed closing-off means capable of sliding in the recess, the introduction opening is placed facing the sonotrode, the sonotrode and the sleeve are moved together toward the introduction opening into a peening position in which the closing-off means face the recess ends opening into said opening, then the rotor rim is turned about its axis so as to bring the closing-off means into a first end of the recess so as to form a closed chamber containing the beads. The rim is turned and the vibratory surface is vibrated to mobilize the beads within the chamber, thereby peening the recess.

Abstract: A method for peening the tops of cooled blades which include cooling air passage orifices. Peening is performed by means of the mobilization of a plurality of beads in a sealed chamber containing at least one blade tip. Said plurality of beads is mobilized by the active surface of a sonotrode which delimits part of said chamber. Said beads have a diameter greater than that of said cooling air passage orifices.

Abstract: The invention relates to an apparatus and to a method for the surface treatment and compressive prestressing by peening of a wall of at least one oblong cavity formed in a part, said cavity opening to the outside via a lateral mouth and having two ends presenting frontal openings. The wall of the cavity is ultrasonically peened by mobilizing a plurality of beads in a chamber delimited by said wall of said cavity, a vibratory surface closing off said mouth of said cavity, and closing-off means closing off said openings, by means of a sonotrode excited by means for producing ultrasonic oscillations. The method and the apparatus are particularly intended for treating a turbine disk comprising a number of axial recesses formed in the periphery of said disk and having wall portions which diverge from each mouth.

Abstract: The card reader has a body (12) defining a support area (30) for a card equipped with contact terminals (32). The body (12) has, on one side of the support area (30), tabs (34), for holding the card, extending partly facing the support area (30). The reader also has a lock, for retaining the card, which comprises a moving latch (52) for retaining the card. This latch (52) can move between a retaining position for said card and a release position for said card. The latch (52) is an integral part of said body (12).

Abstract: A casing for electronic equipment including first and second structural elements and a structure for mechanically connecting the first and second structural elements by elastic engagement. The structure for mechanical connection including an elastically deformable leg integral with the first structural element, a transverse projection borne by the leg, and a shoulder formed on the second structural element. The shoulder constitutes a stop configured to collaborate with the projection and hold the leg in place. The structure for mechanical connection by elastic engagement includes a structure for immobilizing the projection facing the shoulder.

Abstract: The invention provides a method and an assembly for the batch-wise preparation of a liquid product constituted by a mixture of at least one primary liquid and at least one secondary liquid. The secondary liquid and liquids, respectfully, to be meteredly added to the flowing primary liquid are displaced, before the metered addition, from a main reservoir to a buffer reservoir. Each of the secondary liquids is conveyed by means of an associated conveyor operating according to the displacement principle. The conveyors are hydraulically operated, whereby the same liquid can be used both as hydraulic operating medium and as primary liquid. A mixing element is provided for mixing the primary liquid with the secondary liquid or liquids. The primary liquid is under pressure, since it can be blended with carbon dioxide. The secondary liquid or liquids are supplied to the mixing element under a pressure that is higher than the pressure inherent to the primary liquid in the mixing element.

Abstract: A connector for a double-sided, printed circuit board. The connector has a body defining a housing for accommodating a microphone module, first conductors equipped with an area for electrical connection to a complementary connector and with an area for contact with a track on the first face of the board, and second conductors connecting the microphone to the board. The body has a space for accommodating the board, where the space is defined between the electrical connection areas of the first and second conductors. Each contact area of the second conductors is in contact with the second face of the board. The microphone module is arranged, with respect to the space for accommodating the board, on the same side as the areas for making contact between the second conductors and the board.

Abstract: A tray for a sheet processing apparatus has a receptacle (11), a lifting plate (12) movable between the low and high positions, arranged at the bottom of the receptacle and cooperating with an elastic thrust return member towards the high position, a lid (13) for covering the receptacle, and the tray has an arrangement preventing the passage of sheets between the cover and receptacle, having at least one clearance (44, 44') arranged on the periphery of the receptacle, and at least one plane limitation area (46, 46') arranged on the periphery of the lid and parallel to the bottom (37) of the receptacle, when the lid (13) is closed, the plane area (46, 46') being offset with respect to the internal surface of the lid and arranged on a support structure (48, 48') integral with the lid, this structure being positioned so that, in the closed position of the lid, it enters the said clearance (44, 44'), the plane limitation area (46, 46') then opening onto the inside of the receptacle.

Abstract: A tray for a sheet processing apparatus having a receptacle, a lifting plate movable between a low position and a high position, an elastic member for elastically moving the lifting plate to the high position from the low position, a lid mounted on the receptacle pivoting about an axis and movable between an open position and a closed position, and a pushing member for pushing the lifting plate toward the low position against an elastic force of the elastic member when the lid moves into the open position, and characterized in that the pushing member is mounted on the lid and maintains the lid in the open position against the elastic force of the elastic member.

Abstract: A feeding device transfers, one by one, sheets from a pile (12) to a processing device having a storage area for the pile of sheets, a drive roller (201) in contact with a sheet disposed at one end of the pile, a separating and prestressing device (203, 210) disposed opposite the roller, the separating and prestressing device including a friction device (203) generating, on the sheet, a friction opposite to the direction in which the sheet is driven. The separating and prestressing device (203, 210) also has a movable support (205) and a lever (211), the support (205) bearing the friction device, whilst the lever has at least one lateral prestressing arm (341), and an elastic unit (214) acting on the lever (211) in order to bias the surface towards the roller (201).

Abstract: A sheet feeding device has a frame adapted for mounting on the image-forming apparatus, a slide sliding on the frame between a closed position in which the sheets are presented to the rollers of the apparatus and an open position for loading the sheets, a tray receiving the sheets disposed in the said slide and having an opening for distributing the sheets to the said rollers and also a loading opening, the tray being able to adopt an inclined position in which the distribution opening presents the sheets to the rollers in the closed position of the slide, and an inclined position in which the loading opening is presented to the user, in the open position of the slide, and a unit pivotally biasing the tray suitable for cooperating with the tray so as to make it pivot from one position to another in the course of the movement of the slide from the closed position to the open position, and vice versa.