Patentsmith SA

Method of estimating an internal temperature of a lithium-ion cell (1), comprising steps of: a) carrying out an electrochemical impedance spectroscopy measurement on said cell (1) at a known internal temperature so as to determine a phase of impedance at a plurality of electrochemical impedance spectroscopy frequencies; b) carrying out a distribution of relaxation times analysis on said electrochemical impedance spectroscopy measurement; c) determining a characteristic frequency corresponding to an electrochemical impedance spectroscopy frequency associated with movement of lithium ions through a solid electrolyte interface layer of said cell, on the basis of said distribution of relaxation times analysis; d) providing a correlation curve representative of the relationship between the impedance phase at said characteristic frequency and internal temperature for said cell (1), and carrying out a calibration of said correlation curve on the basis of said impedance phase as measured in step a) at said characteristic frequency and said known internal temperature; e) repeatedly, carrying out electrochemical impedance spectroscopy at said characteristic frequency to determine an impedance phase at said characteristic frequency; f) on the basis of said impedance phase at said characteristic frequency as determined out in step e), estimating said internal temperature based on said correlation curve as calibrated in step d); g) repeatedly, updating said characteristic frequency and updating said calibration by repeating steps a)-d).

Maillon (1) de bracelet (100) comprenant : - un premier élément de maillon (3) ; - un deuxième élément de maillon (5) monté en coulissement sur ledit premier élément de maillon (3) selon une première direction perpendiculaire à l'axe principal dudit maillon (1) entre un premier état stable et un deuxième état stable - un système de verrouillage agencé pour définir lesdits états stables dudit deuxième élément de maillon (3) par rapport audit premier élément de maillon (5) dans lequel ledit système de verrouillage comporte un élément mobile (9) monté en glissement sur ledit premier élément de maillon (3) selon une deuxième direction perpendiculaire à ladite première direction, ledit élément mobile (9) portant au moins un premier élément de verrouillage (15, 17) agencé de sorte à coopérer avec au moins un deuxième élément de verrouillage (13a, 13b, 19) prévu sur ledit deuxième élément de maillon (5), lesdits éléments de verrouillage (15, 17, 13a, 13b, 19) étant agencés pour définir lesdits états stables lorsque ledit élément mobile (9) se trouve dans une position de verrouillage, ledit au moins un premier élément de verrouillage (15, 17) étant libre par rapport audit au moins un deuxième élément de verrouillage (13a, 13b, 19) lorsque ledit élément mobile (9) se trouve dans une position de déverrouillage. Selon l'invention, ledit élément mobile (9) forme une surface extérieure dudit maillon s'étendant sur substantiellement toute la largeur dudit premier élément de maillon (3), l'ensemble dudit élément mobile (9) étant déplaçable entre ladite position de verrouillage et ladite position de déverrouillage.

A blast baffle for a firearm suppressor is disclosed. The blast baffle including a principal portion; a tubular boss provided at an inner zone of said principal portion and defining a shoulder, said tubular boss being provided with a female thread; an insert provided with a projectile passage surrounding an axis, a mounting portion extending into said tubular boss and provided with a male thread, and a main portion extending in an opposite direction to said mounting portion, said male thread mating with said female thread; wherein a first of said tubular boss and said insert further comprises at least one locking tab extending into a locking groove provided in a second of said tubular boss and said insert.

A spiral baffle for a firearm suppressor is disclosed. The spiral baffle includes a projectile passageway surrounding an axis; a helical surface making at least one full turn around said axis; a central portion surrounding said projectile passageway and being situated adjacent thereto, said central portion defining plurality of protrusions extending beyond said helical surface in a first direction parallel to said axis, said protrusions also extending away from said projectile passageway in a second direction away from said axis.

Sound suppressor (1) for a firearm (100), comprising:- a tubular casing (3) having a proximal end (3a) adapted to be attached at the muzzle (101) of a firearm (100), a distal end (3b) comprising an end cap (7) with an exit orifice (9) adapted to permit the passage of a projectile;- a core structure (11) situated in the interior of said tubular casing and defining at least one flow disruptor (11a, 11b, 11c, 11d, 11e, 11f) adapted to disrupt flow of propellant gases leaving said muzzle (101), said core structure (11) furthermore defining a projectile passageway adapted to be aligned with a bore of said firearm and adapted to permit the passage of a projectile from said muzzle (101) to said exit orifice (9);- a plurality of water drainage openings (17a, 17b, 17c, 17d, 17e, 17f, 17g, 17h) passing through said tubular casing (3) on an underside thereof;- a shutter (19) comprising a plurality of through-holes (21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h), said shutter (19) being slidably mounted on said tubular casing (3) and displaceable from a first position, in which said water drainage openings (17a, 17b, 17c, 17d, 17e, 17f, 17g, 17h) are aligned with respective through-holes (21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h), and a second position, in which said water drainage openings (17a, 17b, 17c, 17d, 17e, 17f, 17g, 17h) are occluded by said shutter (19).

Indentation head system (1) for an indentation instrument (100), comprising: - an indenter tip (3) adapted to be brought into contact with a surface of a sample (5) along at least an indentation axis (A); - a reference element (9) arranged to support said indenter tip (3). According to the invention, said indentation head system (1) further comprises: - a zero-level sensor (17) arranged to output a signal indicating whether said indenter tip (3) is displaced with respect to said reference element (9) from a neutral relative position, considered along said indentation axis (A); - an elastic element (19) connected between said indenter tip (3) and an actuator (21) with known elongation, said actuator (21) being connected to said reference element (9); - a controller (25) adapted to receive signals from said zero-level sensor (17) to carry out servo control of said actuator (21) based on output of said zero-level sensor (17) and said known elongation of said actuator (21) such that said zero-level sensor (17) outputs a signal corresponding to a substantially zero displacement of said indenter tip (3) from said neutral relative position, said controller furthermore being adapted to calculate a force applied by said indenter tip (3) to said sample (5) on the basis of an output of said displacement sensor (23) and an elastic coefficient (k) of said elastic element (19).

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Procédé de fabrication d'un balancier (1) pour oscillateur horloger, comprenant les étapes de : - usinage dudit balancier (1) en métal ; - mesure du poids et/ou de l'inertie dudit balancier (1) ; - facultativement, mise en classe par enlèvement de matière dudit balancier (1) ; - application d'une couche de passivation (17) sur au moins une partie de la surface dudit balancier (1), ladite couche de passivation (17) ayant une épaisseur inférieure à 5nm, de préférence inférieure à 3nm, encore de préférence inférieure à 2nm.

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