Abstract: The present invention relates to an expansion valve intended to be arranged in a fluid passage between an upstream conduit and a downstream conduit, the expansion valve comprising: —a tubular valve body which is provided, in an upstream axial end section, with at least one upstream orifice intended to be in communication with the upstream conduit and, in a downstream axial end section, with at least one downstream orifice intended to be in communication with the downstream conduit, the downstream orifice and the upstream orifice being connected by a main channel, —a shut-off device which is movable between a closed position and an open position with respect to the downstream orifice. The shut-off device includes a slider which is mounted to slide axially on the downstream axial end section of the valve body.

Abstract: A pressure control pinch valve for a flexible tube, includes a fixed support cooperating with one side of a flexible tube to be controlled, a dynamic pressure arranged on the opposite side to the fixed support and able to pinch the tube in order to control the pressure therein, the dynamic pressure being composed of a rotating roller that is mounted so as to rotate about an off-center axis with respect to the center of the roller and is provided with a peripheral contact surface exerting a force directly on the tube.

Abstract: The present invention relates to an expansion valve intended to be arranged in a fluid passage between an upstream conduit and a downstream conduit, the expansion valve comprising: —a tubular valve body which is provided, in an upstream axial end section, with at least one upstream orifice intended to be in communication with the upstream conduit and, in a downstream axial end section, with at least one downstream orifice intended to be in communication with the downstream conduit, the downstream orifice and the upstream orifice being connected by a main channel, —a shut-off device which is movable between a closed position and an open position with respect to the downstream orifice. The shut-off device includes a slider which is mounted to slide axially on the downstream axial end section of the valve body.

Abstract: This two-dimensional Fourier transform ultrasound imaging method includes by controlling transmitting and receiving transducers: obtaining M matrices MRm, 1?m?M, of sampled ultrasonic time signals; two-dimensional Fourier transforming each matrix MRm to obtain M spectral matrices FTMRm; converting each spectral matrix FTMRm to obtain M spectral images FTIm; combining the M spectral images FTIm and two-dimensional inverse Fourier transforming the resulting spectral image FTI to obtain an ultrasound image I. The conversion includes taking into account a change of propagation mode during a backscatter, by adding a parameter characterizing this change of mode in equations (SYS) of change of reference frame, and/or taking into account a reflection against a wall, by adding a phase shift term in a relation (REL) of matrix transformation.

Abstract: A lubricating liquid manifold for a crankpin of an epicyclic gear train. The epicyclic gear train is lubricated by a lubrication system conveying a first flow of a lubricating liquid towards the manifold and a second flow of the lubricating liquid towards a member to be lubricated. The manifold comprises a hollow body provided with an inlet port intended to receive the first flow and an outlet port designed such that the first flow is conveyed towards a guide device connected to the crankpin. The manifold comprises a barrier comprising a shoulder connected to the body and a deflector protruding radially outwards from the body so as to form, with the shoulder, a diversion space for diverting the second flow and preventing it from penetrating into the manifold.

Abstract: A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising at least one rotational connecting member arranged in a connection space, a driven connection section of the driven part surrounding a driving connection section of the driving part, the connection space being located radially, with respect to the axis of rotation, between the driving connection section and the driven connection section. The free-wheel comprises at least one barrier, the geometry of which varies depending on the speed of rotation of the driving part, arranged radially between the driving part and the driven part and longitudinally against the connection space, the barrier being constrained to rotate with the driving connection section.

Abstract: A lubricating liquid manifold for a crankpin of an epicyclic gear train. The epicyclic gear train is lubricated by a lubrication system conveying a first flow of a lubricating liquid towards the manifold and a second flow of the lubricating liquid towards a member to be lubricated. The manifold comprises a hollow body provided with an inlet port intended to receive the first flow and an outlet port designed such that the first flow is conveyed towards a guide device connected to the crankpin. The manifold comprises a barrier comprising a shoulder connected to the body and a deflector protruding radially outwards from the body so as to form, with the shoulder, a diversion space for diverting the second flow and preventing it from penetrating into the manifold.

Abstract: A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising a cage carrying at least one rolling element arranged in a connection space, the free-wheel having at least one lubrication device conveying a lubricating fluid into the connection space. The free-wheel comprises at least one variable-opening barrier arranged radially between the driving part and the driven part and longitudinally against the connection space, the opening being indexed on a relative position of the cage and of the driving part.

Abstract: A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising a cage carrying at least one rolling element arranged in a connection space, the free-wheel having at least one lubrication device conveying a lubricating fluid into the connection space. The free-wheel comprises at least one variable-opening barrier arranged radially between the driving part and the driven part and longitudinally against the connection space, the opening being indexed on a relative position of the cage and of the driving part.

Abstract: A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising at least one rotational connecting member arranged in a connection space, a driven connection section of the driven part surrounding a driving connection section of the driving part, the connection space being located radially, with respect to the axis of rotation, between the driving connection section and the driven connection section. The free-wheel comprises at least one barrier, the geometry of which varies depending on the speed of rotation of the driving part, arranged radially between the driving part and the driven part and longitudinally against the connection space, the barrier being constrained to rotate with the driving connection section.

Abstract: This two-dimensional Fourier transform ultrasound imaging method includes by controlling transmitting and receiving transducers: obtaining M matrices MRm, 1?m?M, of sampled ultrasonic time signals; two-dimensional Fourier transforming each matrix MRm to obtain M spectral matrices FTMRm; converting each spectral matrix FTMRm to obtain M spectral images FTIm; combining the M spectral images FTIm and two-dimensional inverse Fourier transforming the resulting spectral image FTI to obtain an ultrasound image I. The conversion includes taking into account a change of propagation mode during a backscatter, by adding a parameter characterizing this change of mode in equations (SYS) of change of reference frame, and/or taking into account a reflection against a wall, by adding a phase shift term in a relation (REL) of matrix transformation.

Abstract: A method for processing ultrasound signals including controlling emission transducers for M successive emissions of plane ultrasound waves having M different angles of emission, controlling N reception transducers in order to simultaneously receive N measurement time signals per emission, and obtaining a matrix [MR(t)] of ultrasound time signals, each coefficient MRi,j(t) of this matrix representing the measurement signal received by the i-th reception transducer caused by the j-th emission. It further includes performing singular-value decomposition of a matrix [FTMR(f)] of frequency signals obtained by transforming the matrix [MR(t)], and eliminating a portion of the singular values and reconstructing a denoised matrix [MRU(t)] of time signals on the basis of the singular values not eliminated.

Abstract: A receiver includes at least a first amplifier configured to receive a received signal and provide a first amplified signal based thereon, a mixer configured to receive the first amplified signal and provide an intermediate frequency signal based thereon and a second amplifier configured to receive the intermediate frequency signal and provide a second amplified signal based thereon. An automatic gain controller for the receiver is configured to, based on a first overload signal indicative of a first frequency range of the first amplified signal having one or more frequency components exceeding a first maximum signal power threshold and a second overload signal indicative of a second frequency range, narrower than the first, of the second amplified signal having one or more frequency components exceeding a second maximum signal power threshold, provide for control of a respective gain of one or both of the first amplifier and the second amplifier.

Abstract: The invention relates to a valve comprising a tubular body in which a valve stem moves axially, the head of the stem cooperating with a corresponding seat on the valve body, said stem acting against a coiled spring that is housed in a chamber of circular cross-section and disposed between a bearing zone at a first end of the chamber and the stem in order to return the stem to the seat, said spring comprising: a first end with a large turn of a diameter substantially identical to a diameter of the chamber at the first end; and a second end with a small turn connected to the shank or the head of the stem and a second large turn for centering and radial stabilization in the chamber.

Abstract: The tire inflation valve comprising a tube defining a passage and having an inside end and an outside end, a valve mechanism positioned in the passage, the valve mechanism comprising a valve shutter and a seat arranged so as to cooperate sealingly with each other, the seat being arranged on the tube in the passage.

Abstract: Wireless receivers and related methods with interferer immunity are disclosed. The receiver includes a receive (RX) front-end, a power level detector, and an automatic gain controller (AGC). The RX front-end includes circuit(s) having variable gains, and the power level detector outputs a power level indicator. The AGC receives the power level indicator and outputs the gain settings to the variable-gain circuits within the RX front-end. Further, the AGC is configured to adjust the gain settings within a first gain range when not receiving data frames and to adjust them within a second gain range when receiving data frames. The second gain range is a restricted version of the first gain range. Further, the AGC can be configured to detect and store gain settings within a sliding time window when data frames are not being received and to use these stored gain settings to determine the second gain range.

Abstract: A method for processing ultrasound signals including controlling emission transducers for M successive emissions of plane ultrasound waves having M different angles of emission, controlling N reception transducers in order to simultaneously receive N measurement time signals per emission, and obtaining a matrix [MR(t)] of ultrasound time signals, each coefficient MRi,j(t) of this matrix representing the measurement signal received by the i-th reception transducer caused by the j-th emission. It further includes performing singular-value decomposition of a matrix [FTMR(f)] of frequency signals obtained by transforming the matrix [MR(t)], and eliminating a portion of the singular values and reconstructing a denoised matrix [MRU(t)] of time signals on the basis of the singular values not eliminated.