Abstract: A power supply with non-isolated DC DC splitting includes n conversion cells that are interlaced. The splitting switch of each cell is placed in a resonant circuit. The resonant circuit makes it possible to obtain a switching to the open state of said switch at zero current and voltage. The ripple at the input and output is minimized and the efficiency improved. In particular, the wiring inductances in the charge transfer loop of each cell no longer have negative effects on the efficiency. The cell may be of boost, buck, buck/boost, Cuk or SEPIC topology.

Abstract: In a power supply with n interlaced conversion cells, a control device activates m paths out of n paths, 1?m?n, as a function of the power or of the current handled by the power supply. The cell may have a boost, buck, buck/boost, Cuk, or SEPIC topology.

Abstract: The invention relates to a fuel cell bipolar plate (22) comprising at least one ridge (47, 23a, 33a, 40a, 27a, 35a, 41a, 23a) on at least one of the faces (51) thereof, such as seal at least one fluid circuit in the cell from among the oxidant, fuel and coolant inlet circuits and the oxidant, fuel and coolant outlet circuits, said circuits being formed by stacking openings which are provided in the plate (22) and which form an inlet and an outlet for the oxidant and the fuel (33, 40, 35, 41) respectively and openings which form an inlet and an outlet for the coolant (23, 27) respectively during the assembly of the constituent cells (1) of the fuel cell.

Abstract: The invention mainly concerns a fuel cell seal (52) designed to be affixed on a bipolar plate (22) in the form of a membrane whereof the profile corresponds approximately to the peripheral frame (50) of the bipolar plate (22) and comprising a central opening (66) coinciding approximately with the central zone (46) dispensing the reagents of the bipolar plate (22). The invention also concerns a fuel cell comprising an electrode membrane assembly (70) which includes in particular an active region (74), which is the site of anode and cathode reactions, and a peripheral frame (75) and which is sandwiched between two bipolar plates (22) whereon is affixed the inventive seal (52).

Abstract: The invention concerns a monopolar fuel cell endplate (4) of the type with proton exchanging membrane consisting of a cathode or anode monopolar half-plate (41) attached to a closure plate (42). The monopolar half-plate comprises, in its central part, a cathode or anode active region (411), and, at its periphery, at least two oxidant boxes, if the monopolar half-plate is cathodic, or fuel boxes, if the monopolar half-plate is anodic. Each oxidant or fuel box comprises at least one channel (414) emerging outside the active region (411) to enable oxidant or fuel to be circulated outside the monopolar plate on the monopolar plate side, the oxidant or fuel boxes not comprising an opening emerging into the central region of the closure plate, such that the central part of said closure plate is not swept either with fuel or with oxidant.

Abstract: A method for attaching a proximity probe offset to an axis defining an extension cable. The method includes a sensing element; a cylindrical part molded with a moldable material; a recess configured in one of two opposing ends defining the cylindrical part to receive the sensing element; a first and a second ferrule each extending from opposing surfaces defining an exterior of the cylindrical part, a first axis defining the first and second ferrules being offset from a second axis defining the cylindrical part; and an extension cable operably attached to the sensing element via the first and second ferrules, the sensing element being disposed offset relative to the extension cable.

Abstract: The invention relates to a bipolar plate for a fuel cell, of the type that comprises a cathode bipolar half plate and an anode bipolar half plate which are placed next to one another. Each bipolar half plate (1) consists of a plate, the central part of which comprises an active zone (2), while the periphery thereof comprises a plurality of cut-outs (4) which are intended to form at least two oxidant tanks, at least two fuel tanks and at least two coolant tanks. Moreover, at least one bipolar half plate comprises at least one connecting rib (8) between a peripheral cut-out and the active zone. The invention is characterised in that each cut-out (4) that is intended to form a coolant tank is surrounded by a tank-sealing rib (7) which projects out from the outer face of the bipolar half plate.

Abstract: The invention mainly concerns a fuel cell seal (52) designed to be affixed on a bipolar plate (22) in the form of a membrane whereof the profile corresponds approximately to the peripheral frame (50) of the bipolar plate (22) and comprising a central opening (66) coinciding approximately with the central zone (46) dispensing the reagents of the bipolar plate (22). The invention also concerns a fuel cell comprising an electrode membrane assembly (70) which includes in particular an active region (74), which is the site of anode and cathode reactions, and a peripheral frame (75) and which is sandwiched between two bipolar plates (22) whereon is affixed the inventive seal (52).

Abstract: Device for fixing a watchband to a watch container includes a hinge connected to the watch container with two pivots sliding therein and a fixing element fixed to or integrated into the end of the watchband provided with two brackets defining a space therebetween for arranging the hinge. Each bracket has an axial recess protruding in the space between the brackets. The axial recess is extended in a direction of the external side faces of the brackets through an orifice containing an end stone mounted such that it is slidable in the recess and exposed to the action of a second return spring which pushes a press button fixed to the external ends of the end stone towards outside. The hinge is provided on the side faces thereof with an annular chamber having a slot which defines a privileged direction.

Abstract: A method and apparatus for attaching a proximity probe offset to an axis defining an extension cable. The method and apparatus include a sensing element; a cylindrical part molded with a moldable material; a recess configured in one of two opposing ends defining the cylindrical part to receive the sensing element; a first and a second ferrule each extending from opposing surfaces defining an exterior of the cylindrical part, a first axis defining the first and second ferrules being offset from a second axis defining the cylindrical part; and an extension cable operably attached to the sensing element via the first and second ferrules, the sensing element being disposed offset relative to the extension cable.

Abstract: The invention concerns a device produced in the form of an assembly which can be integrated in any installation (13) for radioscopy of the product and comprising means for driving the product (5) in rotation about an axis (5a) perpendicular to the tomographic section plane to be obtained, a unit controlling (15, 16) the means (14) driving the product (5) in rotation, to drive the product (5) in rotation about the axis (5a) and an image acquisition and processing unit (16) including means for automatically acquiring and storing radioscopy images of the product (5) while the product (5) is rotating, in digital form, and calculating means for processing the digital images and constructing tomographic sections using a calculating algorithm. The device enables fault controls or geometrical and dimensional controls in mechanical parts for the automotive industry such as cylinder heads.

Abstract: Device for fixing a watchband to a watch container includes a hinge connected to the watch container with two pivots sliding therein and a fixing element fixed to or integrated into the end of the watchband provided with two brackets defining a space therebetween for arranging the hinge. Each bracket has an axial recess protruding in the space between the brackets. The axial recess is extended in a direction of the external side faces of the brackets through an orifice containing an end stone mounted such that it is slidable in the recess and exposed to the action of a second return spring which pushes a press button fixed to the external ends of the end stone towards outside. The hinge is provided on the side faces thereof with an annular chamber having a slot which defines a privileged direction.

Abstract: The invention concerns a device produced in the form of an assembly which can be integrated in any installation (13) for radioscopy of the product and comprising means for driving the product (5) in rotation about an axis (5a) perpendicular to the tomographic section plane to be obtained, a unit controlling (15, 16) the means (14) driving the product (5) in rotation, to drive the product (5) in rotation about the axis (5a) and an image acquisition and processing unit (16) including means for automatically acquiring and storing radioscopy images of the product (5) while the product (5) is rotating, in digital form, and calculating means for processing the digital images and constructing tomographic sections using a calculating algorithm. The device enables fault controls or geometrical and dimensional controls in mechanical parts for the automotive industry such as cylinder heads.