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公开(公告)号：US20190103870A1
公开(公告)日：2019-04-04
申请号：US16086497
申请日：2017-01-25
Inventor： Francois GUEISSAZ
Abstract: A force sensor including: a first part including a detection coil; a second part positioned opposite the first part and including: a ferromagnetic plate translationally movable relative to the first part to move towards the first part when a force is transferred to the sensor and to reduce reluctance of a magnetic circuit formed by the first and second parts in series with a variable gap; and an electronic detection circuit configured to generate a signal dependent on the reluctance of the magnetic circuit. The ferromagnetic plate is formed by an amorphous metal alloy.
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公开(公告)号：US20210088980A1
公开(公告)日：2021-03-25
申请号：US17110872
申请日：2020-12-03
Inventor： Francois GUEISSAZ , Alain JORNOD , Yves THEODULOZ
Abstract: A thermoelectric watch including a thermoelectric generator; a voltage booster connected to the thermoelectric generator; an energy management circuit connected to the voltage booster and configured to control the charging of at least one energy storage element, the energy management circuit including an output configured to change from a first logic state to a second logic state when the thermoelectric generator starts generating electrical energy, and to change from the second logic state to the first logic state when the thermoelectric generator finishes generating electrical energy.
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3.发明申请公开(公告)号：US20170277134A1
公开(公告)日：2017-09-28
申请号：US15453240
申请日：2017-03-08
Inventor： Francois GUEISSAZ
CPC classification number: G04F10/00 , A63B71/0686 , G01D5/20 , G01D5/2006 , G01D5/2013 , G01D5/202
Abstract: The invention relates to a circuit for detecting a variation in inductance of the magnetic circuit of an inductive displacement sensor, wherein the detector circuit comprises:a first flip flop arranged to supply a first signal comprising a voltage pulse of necessary and sufficient duration to charge the coil to a threshold current, wherein the first signal is applied to a first terminal of the coila pulse generator configured to supply a reference signal comprising a reference pulsea clock signal generator arranged to trigger the charge pulse and the reference pulse periodically and simultaneouslya second flip flop arranged to generate an output signal taking the status of the first signal on the trailing edge of the reference pulse.
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Patent Agency Ranking
公开(公告)号：US20200004209A1
公开(公告)日：2020-01-02
申请号：US16437200
申请日：2019-06-11
Inventor： Francois GUEISSAZ , Alain JORNOD , Yves THEODULOZ
Abstract: A thermoelectric watch including a thermoelectric generator; a voltage booster connected to the thermoelectric generator; an energy management circuit connected to the voltage booster and configured to control the charging of at least one energy storage element, the energy management circuit including an output configured to change from a first logic state to a second logic state when the thermoelectric generator starts generating electrical energy, and to change from the second logic state to the first logic state when the thermoelectric generator finishes generating electrical energy.
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公开(公告)号：US20190079453A1
公开(公告)日：2019-03-14
申请号：US16104212
申请日：2018-08-17
Inventor： Alexandre HAEMMERLI , Francois GUEISSAZ , Lionel TOMBEZ , Bernhard SCHNYDER , Silvio DALLA PIAZZA
IPC: G04B17/06
Abstract: The present invention concerns a piezoelectric element (3) for an automatic frequency control circuit. The element includes a balance spring (7) formed of a strip of piezoelectric material, a first electrode connected to the automatic control circuit, and disposed on all or part of one side of the strip, and a second electrode connected to the automatic control circuit and disposed on all or part of another side of the strip of piezoelectric material. The element further comprises at least two discontinuous layers of an insulating material, each discontinuous layer of insulating material being disposed on at least one side of the strip of piezoelectric material and separating a first electrode from a second electrode. The discontinuous layers of insulating material are distributed on predetermined portions of the balance spring substantially forming arcs, with a predetermined angular periodicity.
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公开(公告)号：US20220163923A1
公开(公告)日：2022-05-26
申请号：US17669476
申请日：2022-02-11
Inventor： Alexandre HAEMMERLI , Francois GUEISSAZ , Jean-Claude MARTIN , Lionel PARATTE , Yves WINKLER , Gianni DI DOMENICO , Pascal WINKLER , Jean-Luc HELFER , Lionel TOMBEZ , Baptiste HINAUX , Donald William CORSON , Michel WILLEMIN
Abstract: A process for producing a metal alloy balance wheel by molding includes a) making a mold in the negative shape of the balance wheel; b) obtaining a metal alloy that has a thermal expansion coefficient of less than 25 ppm/° C. and is able to be in an at least partly amorphous state when it is heated to a temperature between its glass transition temperature and its crystallization temperature; c) putting the metal alloy into the mold, the metal alloy being heated to a temperature between its glass transition temperature and its crystallization temperature so as to be hot-molded and to form a balance wheel; d) cooling the metal alloy to obtain a balance wheel made of the metal alloy; and e) releasing the balance wheel obtained in step d) from its mold. The process also includes a step for over-molding flexible centering components in the hub.
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公开(公告)号：US20210181679A1
公开(公告)日：2021-06-17
申请号：US16767778
申请日：2018-12-03
Inventor： Alexandre HAEMMERLI , Francois GUEISSAZ , Jean-Claude MARTIN , Lionel PARATTE , Yves WINKLER , Gianni DI DOMENICO , Pascal WINKLER , Jean-Luc HELFER , Lionel TOMBEZ , Bapitste HINAUX , Donald Willan CORSON , Michel WILLEMIN
IPC: G04B17/22
Abstract: A balance for timepieces includes a rim, a hub, and at least one arm connecting the hub to the rim. At least one portion of the balance is made of an at least partially amorphous metal alloy. The at least partially amorphous metal alloy is based on an element chosen from the group consisting of platinum, zirconium and titanium, and has a coefficient of thermal expansion comprised between 7 ppm/° C. and 12 ppm/° C. The balance can be manufactured by moulding. A resonator can include such a balance and a monocrystalline quartz balance spring.
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公开(公告)号：US20200004204A1
公开(公告)日：2020-01-02
申请号：US16430782
申请日：2019-06-04
Inventor： Francois GUEISSAZ , Alain JORNOD , Yves THEODULOZ
Abstract: A thermoelectric watch includes a thermoelectric generator; a voltage booster connected to the thermoelectric generator, and an energy management circuit connected to the voltage booster and configured to control the charging of at least one energy storage element. The energy management circuit includes an output configured to change from a first logic state to a second logic state when the thermoelectric generator starts generating electrical energy, and to change from the second logic state to the first logic state when the thermoelectric generator finishes generating electrical energy.
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