Abstract: An articulated ring set includes a plurality of concentric rings connected by axles having axes of rotation that are perpendicular to the axes of symmetry of the rings. The axles are angularly offset from one another such that they are non-orthogonal and non-parallel to one another. In an embodiment, some of the rings define a race and the axles coupling the rings to other rings of the pluralit of concentric rings are slidable within the race. First and second coils may be positioned within an innermost ring and coupled to a circuit that senses current in one coil and, in response, induces a current in the other coil. Magnets in one or more other rings both induce current in the coils and are accelerated by current in the coils.

Abstract: Autonomous and lightweight vehicle intended to transport a city dweller combined with the use of public transportation. Formed by one motorized wheel on which the user maintains, through speed, his or her lateral balance, and longitudinal balance is ensured by automatic functioning driven by an accelerometer. The footrests and the guide supports that tightly hold the leg are retractable. Driving does not require the use of the hands. The entire device goes into a bag, e.g. a backpack, and weighs less than 4 kg.

Abstract: The invention relates to an autonomous helicopter for recreational purposes or for a swarm-type surveillance system, characterised in that the helicopter has a complete automatic flight control, and in that the flight thereof is stable and automatic due to a device for the automatic control of the altitude, comprising at least two optical receivers, at least one optical emitter, at least two channels for processing signals of the receivers, and at least two motors controlling at least two propellers, at a speed proportional to the total amount of signals received. Said helicopter avoids obstacles by means of an orientation device controlled by the difference between the signals of the two receivers. It advances at a regular speed by means of a shift of the centre of gravity thereof in front of the axis of the two lifting propellers.

Abstract: Autonomous and lightweight vehicle intended to transport a city dweller combined with the use of public transportation. Formed by one motorized wheel on which the user maintains, through speed, his or her lateral balance, and longitudinal balance is ensured by automatic functioning driven by an accelerometer. The footrests and the guide supports that tightly hold the leg are retractable. Driving does not require the use of the hands. The entire device goes into a bag, e.g. a backpack, and weighs less than 4 kg.

Abstract: Device of levitation of an item over an optimized base by means of permanent magnets. The equilibrium is stable along one or two axes by means of these permanent magnets, and along the one or two others by means of a combination of electromagnets of near zero consumption at equilibrium.

Abstract: A motorized mobile toy remote controlled by light beams. The remote control projects a spot on the ground, the toy, equipped with optical sensors, follows the spot. The optical sensor delivers instructions on the variation of the position of the spot compared to the center of the image, the processing of an electronic circuit then controls the motors to compensate the variation.

Abstract: Temperature monitoring device of a matter that is at least partly made of water, such as food, comprising a wireless temperature sensor comprising: a temperature transducer of the said matter; an electromagnetic wave transmitter circuit connected electrically with the temperature transducer, comprising a converter of electric signals transmitted from the transducer in the form of electromagnetic signals; a hermetic and good thermal conductive case designed to be fitted out with the electric system comprising the temperature transducer and the transmitter circuit; wherein the sensor is laid out so that the temperature transducer is located near to the transmitter circuit, thereby forming a compact unit. The invention further relates to a temperature monitoring process using the said temperature monitoring device.

Abstract: Temperature monitoring device of a matter that is at least partly made of water, such as food, comprising a wireless temperature sensor comprising: a temperature transducer of the said matter; an electromagnetic wave transmitter circuit connected electrically with the temperature transducer, comprising a converter of electric signals transmitted from the transducer in the form of electromagnetic signals; a hermetic and good thermal conductive case designed to be fitted out with the electric system comprising the temperature transducer and the transmitter circuit; wherein the sensor is laid out so that the temperature transducer is located near to the transmitter circuit, thereby forming a compact unit. The invention further relates to a temperature monitoring process using the said temperature monitoring device.

Abstract: Temperature monitoring device of a matter that is at least partly made of water, such as food, comprising a wireless temperature sensor comprising: a temperature transducer of the said matter; an electromagnetic wave transmitter circuit connected electrically with the temperature transducer, comprising a converter of electric signals transmitted from the transducer in the form of electromagnetic signals; a hermetic and good thermal conductive case designed to be fitted out with the electric system comprising the temperature transducer and the transmitter circuit; wherein the sensor is laid out so that the temperature transducer is located near to the transmitter circuit, thereby forming a compact unit. The invention further relates to a temperature monitoring process using the said temperature monitoring device.

Abstract: A motorized mobile toy remote controlled by light beams. The remote control projects a spot on the ground, the toy, equipped with optical sensors, follows the spot. The optical sensor delivers instructions on the variation of the position of the spot compared to the center of the image, the processing of an electronic circuit then controls the motors to compensate the variation.

Abstract: A toy includes a toy proper and accessories. The toy proper includes a processing unit having a microprocessor or a microcontroller incorporated therein. An autonomous electrical supply supplies the processing unit with electrical energy. An assembly of at least one of a sensor and an actuator connected to the processing unit carries out at least one type of function. An inductive coupler is connected to the processing unit. The accessories associated with the toy proper each include at least one inductive label for interacting electromagnetically with the inductive coupler so that a current of defined frequency flows through said at least one inductive coupler connected to said at least one processing unit and said inductive coupler exchanges with said inductive labels binary data corresponding to phase or amplitude states of the frequency modulation.

Abstract: An electronic key comprising, mounted in a key body, a key shank for insertion into a corresponding housing of a lock cylinder for the purpose of unlocking it, the cylinder having a stator portion and a rotor portion secured to a tongue, and including first mechanical means and first electronic means, and the key including second mechanical means and second electronic means for co-operating with the corresponding first means of the cylinder when the key is fully inserted in the cylinder and for causing the lock to be unlocked when an identity code of the key and a corresponding code of the lock match. The electronic means of the key (16, 18, 20) are powered from self-contained power generator means (14) actuated merely by displacing the key shank in the body of the key.

Abstract: The invention concerns a doll's, toy baby's or teddy bear's eye whereof the opening and closing are controlled by an electromagnet

Abstract: An energy converting circuit, boosting the voltage supplied by a low direct voltage source, comprising a self-oscillating circuit, operating at very low voltage, using a voltage boosting transformer generating control signals of two chopper-boosters operating alternately. The circuit including an enhancement-type field effect translator used in synchronous switching with the self-oscillating circuit, which is in serial connection with an inductive resistor to the terminals of the source (1). The transistor being connected to a user circuit via a diode (15, 16). The circuit is used in a device for supplying electricity to appliances and by the production of thermal converters for the utilization of low-voltage thermoelectricity, as well as in a method for the manufacture of thermal converters on an industrial scale.

Abstract: This toy is associated with a range of accessories, and includes:

Abstract: A device for heating a cooling vessel for keeping warm the food contained in the vessel. A mobile support is provided for the vessel in which are arranged a supply module comprising a source of live electric energy including a high frequency voltage selector supplied by the source and at least a flat inductor of fine thickness supplied by the voltage selector. The source of electric energy generating an electromagnetic field perpendicular to the support plane and a flat armature of fine thickness made up of completely closed spires and placed under the vessel parallel to the supporting table.

Abstract: A food heating and cooling device including a tray, at least one main dish plate in the tray, at least one secondary dish plate in the tray, a cover associated with the tray for maintaining the food hot or cold, an inducer for heating, reheating or maintaining heat and powered by an electronic generator circuit which induces currents in an armature located on or under the plates, a thermoelectric exchanger for maintaining the food cold or cool by extracting residual heat from the plates and compensates for thermal insulation leaks from the tray and cover, and rechargeable batteries connected to the inducer and the thermoelectric exchanger.

Abstract: A food heating and cooling device including a tray, at least one main dish plate in the tray, at least one secondary dish plate in the tray, a cover associated with the tray for maintaining the food hot or cold, an inducer for heating, reheating or maintaining heat and powered by an electronic generator circuit which induces currents in an armature located on or under the plates, a thermoelectric exchanger for maintaining the food cold or cool by extracting residual heat from the plates and compensates for thermal insulation leaks from the tray and cover, and rechargeable batteries connected to the inducer and the thermoelectric exchanger.