Abstract: The piece of jewellery comprises at least two rings (2, 4) that can nest inside each other and have different diameters. These rings are assembled to each other so as to pivot relative to each other. The piece of jewellery can thus pass from a configuration wherein the rings are tilted to a configuration wherein they are nesting, such that the surface of the smaller ring (2) is concealed. The piece of jewellery further comprises indexing means (26, 11c) comprising a stud (26) secured to one of the rings (2, 4) and which is arranged for cooperating with the edge (30) of an elongated aperture (11c) made in another ring (4), so as to immobilize the rings selectively in a plurality of relative positions.

Abstract: The invention relates to a Breguet overcoil balance spring (1) that includes a hairspring (3) mounted in a single part, made of micro-machinable material, and coaxially with a collet (5). According to the invention, the balance spring has a terminal curve (7) made of micro-machinable material and an elevation device (9) made of micro-machinable material between the outer coil (15) of the hairspring and the terminal curve to improve the concentric development of the balance spring. The invention also relates to the method of manufacturing the balance spring. The invention concerns the field of timepiece making.

Abstract: The dial with an enamel coating (2) includes a base plate (1) made of ceramic material with portions in relief (4, 8) obtained by partial or through shaping or machining, formed by an insert (10) also having an enamel coating (12) and whose thickness defines a recess (4) or an embossment (8).

Abstract: This wicking apparatus includes a liquid reservoir, a wick holder, and a wick. The wick holder has a top part for fitting on the reservoir neck and a bottom part for insertion into the reservoir opening, the top part being plate-formed with a central opening, and with two peripheral projections that are spaced apart and that extend downward from the plate towards the reservoir body, projections for contacting inner and outer walls of the reservoir neck, and a second projection for contacting an outer wall of the reservoir neck, the bottom part having wick supporting arms that extend downwards and have flexible end portions projecting inwardly towards the centre of the reservoir opening. The wick is step-shaped with a larger diameter part, and a smaller diameter part: the interface between them defines a shoulder which is supported and held in place by the flexible end portions of the supporting arms.

Abstract: A blocking system or blocking body (1) is provided that is composed of at least four means or members (2) that have a common base (3) and in the transport state are pivoted upwards so that the tips (2.1) of all means (2) lie in one plane, wherein the means (2) in the active state are orientated in such a way that at least three tips (2.1) form contact points (9) on a surface (8) and at least the fourth means (2) pointing upwards penetrates one of the wheels when it is run over. This type of crow's foot (blocking body (1)) can be delivered by means of a thrower or by depositing it into the terrain in which the vehicles are situated, and whose continued travel is to be prevented.

Abstract: The oscillating weight (2) is for automatically winding a timepiece movement; it pivots off-center relative to the center of the movement and is made of a single heavy material. The weight (2) is carried by a shock absorber (1) that takes the form of a plate (4), one end of which is secured to the weight and the other end of which is secured to a tube (5) arranged to rotate about an arbour (6) forming the axis of rotation of the weight.

Abstract: A terahertz wave detecting apparatus includes a semiconductor chip 12, a two-dimensional graphene 14, a conductive source electrode 15, and a drain electrode 16 and a gate electrode 17. The two-dimensional graphene 14 is connected to the source electrode and the drain electrode. The apparatus further includes a SD voltage detection circuit 18, a gate voltage applying circuit 19 and a magnetic field generating device 20.

Abstract: A first compression stage and a second compression stage being arranged at positions adjacent to each other. The first centrifugal impeller and the second centrifugal impeller are arranged in such an orientation that back sides of the first centrifugal impeller and the second centrifugal impeller face to each other. A connection flow path is formed in the first housing and the second housing for introducing the compressed fluid from the first compression stage into the second compression stage. An upstream portion of the connection flow path is formed integrally with the first housing, and a downstream portion of the connection flow path is formed integrally with the second housing.

Abstract: A method for detecting abnormality in a fluid supply line is provided that uses a fluid control apparatus with a pressure sensor so that abnormality of malfunction and sheet leaks of a plurality of valves incorporated into the fluid supply line can be checked easily, promptly and accurately by operating the flow rate control apparatus possessing the pressure sensor. Specifically, using a fluid supply line provided with the flow rate control apparatus possessing the pressure sensor equipped with a flow rate setting mechanism, a flow rate/pressure display mechanism, and/or a flow rate self-diagnosis mechanism, abnormality of the control valves, installed with the flow rate control apparatus and on the upstream side and downstream side thereof, is detected by using the pressure value displayed and/or the value diagnosed with a self-diagnosis mechanism of the flow rate control apparatus.

Abstract: An electronic card includes an element for transmitting a signal to a user of the electronic card, an electronic unit, an electric energy source, a switch actuatable by a user of the electronic card and an application introduced into the electronic unit. The electronic unit includes an element for detecting actuation of the switch, arranged for determining whether the actuation ends within a first time interval from the start of actuation (t0), the end of the first time interval occurring after transmission (t1) of a signal perceptible to the card user, or for determining whether the switch actuation ends within a second time interval (T2max) from the start of transmission (t1) of the user perceptible signal, the application being actuated or the actuation thereof being validated when the detection element has detected the end (t2) of the switch actuation within the first time interval or the second time interval.

Abstract: The packaged piezoelectric resonator comprises a case (170; 270) with a lid (140; 240) and a piezoelectric resonator element (110) housed in said case, The piezoelectric resonator element includes a planar tuning-fork-shaped part with two parallel vibrating arms (112, 114), and an additional attachment arm (118) intended for fixing the resonator element (110) to the bottom (172) of the case (170). The inside surface of the lid (140, 240) is stepped in such a way as to form a first portion (142) where the lid has a first thickness and a second portion (144) where the lid has a second thickness substantially greater than the first thickness, the first portion (142) extending at least over distal end portions (166, 168) of the vibrating arms (112, 114), and the second portion (144) extending at least over a part of the attachment arm (118).

Abstract: A searching method for tree data structure topology employs an array generated as a search key array representing a tree serving as search key to represent a parent-child relationship between nodes. The array has the node identifier assigned to a parent node associated with a corresponding non-root node. Non-root nodes are nodes other than a root node, and the node identifier assigned to the parent node corresponds to the node identifier assigned to associated non-root nodes. An offset is applied to node identifiers in the search key array, the node identifiers to which offset is applied are compared with corresponding node identifiers contained in a portion in a C-P array, the portion determined according to the offset, and a vertex node list indicating a search result is stored, wherein the search result contains node identifiers included in a portion of the C-P array whose all nodes matched in comparison.

Abstract: The invention comprises a chronograph watch including a chronograph mechanism. The chronograph mechanism includes a chronograph train (50), and a counter mechanism (64) kinematically connected to the train (50). The counter mechanism (64) further includes first and second wheel sets (78, 82) respectively provided with first and second display members (36, 38), wherein the first wheel set (78) is angularly positioned using positioning members (86) so as to rotate in steps, and the second wheel set (82) is angularly positioned by the first wheel set (78).

Abstract: Watch (1) including time display means (8; 10) covered by a crystal (4). This watch includes an interface device for controlling a computer cursor. It forms a contactless watch-mouse. For this purpose, a plurality of touch sensitive sensors are arranged so that their sensitive pads (16) are supported at least partially by the crystal (4). The sensitive pads are arranged in particular in the shape of a matrix extending over most of the crystal (4). The click function is performed using a push-button (14) associated with electric contactor or by a pressure sensor or by a touch sensitive sensor provided for this purpose.

Abstract: A broadband frequency synthesizer including a VCO for supplying a high frequency output signal, a dual mode divider circuit, a means for selecting a division mode of the divider circuit, a phase detector and a low pass filter. The divider circuit divides the frequency of the output signal by a first division facto N1 in a first mode M1or by a second factor N2 different from the first factor N1 in a second mode M2 to provide the divided frequency signal (Fdiv). The selection means selects by determined time period the first or second division mode of the divider circuit as a function of the programmed frequency of the output signal in the frequency band defined by the first and second division factors N1 and N2. If this frequency is dose to the center of the frequency band, the dual mode divider divides the output signal frequency by a third factor N3 in a first mode M1 or by a fourth division factor N4. different from N3, in a second mode M2 according to the programming of the selection means.

Abstract: Disclosed is a method of controlling the flow rate of clustering fluid using a pressure type flow rate control device in which the flow rate Q of gas passing through an orifice is computed as K=KP1 (where K is a constant) with the gas being in a state where the ratio P2/P1 between the gas pressure P1 on the upstream side of the orifice and the gas pressure P2 on the downstream side of the orifice is held at a value not higher than the critical pressure ratio of the gas wherein the association of molecules is dissociated either by heating the pressure type flow rate control device to the temperature higher than 40° C., or by applying the diluting gas to the clustering fluid to make it lower than a partial pressure so the clustering fluid is permitted to pass through the orifice in a monomolecular state.

Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.

Abstract: The invention relates to a chronographic timepiece and a chronograph mechanism (7) thereof including an elapsed time indicator member (17), a reset control member (21), and a reset device (25) for the indicator member, which includes a hammer (61), mounted in translation between an inactive position, where the hammer (61) is moved away from heart-pieces (55, 57, 59) that are connected to the indicator member (17), and an active position where stop members (54, 56, 58) of the hammer exert a reset force against the heart-pieces. The hammer (61) includes two studs (64, 66) mounted so as to slide in holes (100, 102) such that the movement vectors (L, K) of the studs (64, 66) between the positions are collinear and not aligned.

Abstract: A laser crystallization method in which an amorphous silicon thin film 2 formed on a substrate 1 is irradiated with a laser beam, the method including the steps of providing the amorphous silicon thin film 2 with an absorbent to form an absorbent layer 3 on the desired specific local areas of the amorphous silicon thin film 2 and laser annealing for crystallizing the specific local areas of the amorphous silicon thin film 2 by irradiating the amorphous silicon thin film 2 including the specific local areas with a semiconductor laser beam L having a specific wavelength absorbable by the absorbent layer 3 and unabsorbable by the amorphous silicon thin film 2 for heating the absorbent layer 3.

Abstract: The invention provides a dovetail structure of a fan which attaches a fan 20 having an inlet hub diameter smaller than an outlet hub diameter to a portion around a discoid disc rotationally driven by a turbine. The disc 10 has a plurality of dovetail grooves 12 extending at a fixed angle ?1 with respect to an axis 1 of a rotation axis from a leading edge 10a to a trailing edge 10b thereof, and spaced at a fixed angle in a peripheral direction. The fan 20 has a dovetail portion 22 extending at the same angle as an angle of the dovetail groove and capable of being fitted to the dovetail groove, in an inner end thereof.