Patent application number | Description | Published |
20080276889 | Electromagnetic Actuator with Two Electromagnets Comprising Magnets Having Different Forces and Method of Controlling an Internal Combustion Engine Valve Using Same - An electromagnetic actuator including an actuating member associated with an armature and able to move between two extreme positions under the action of an elastic member and two electromagnets that attract the armature to one of the extreme positions, where the electromagnets each include a coil, a core for channeling a flux of the coil so that it forms a return path in the armature, and permanent magnets associated with the core so that the latter channels a flux of the permanent magnets so that it forms a return path in the armature, where the permanent magnets of one of the electromagnets exert a force on the armature sufficient to retain the armature in the associated extreme position against the springs, and where the permanent magnets of the other electromagnet exerts a force on the armature insufficient to retain the armature in the associated extreme position against the springs. | 11-13-2008 |
20080283784 | Electromagnetic Actuator With Permanent Magnets Which are Disposed in a V-Shaped Arrangement - A method of controlling a valve actuator for a combustion engine, wherein the actuator has a movable member for collaborating with a stem of a valve, and a electromagnetic device with a permanent magnet associated with a body for moving the movable member between an extreme valve-closed position and an extreme valve-open position, includes the steps of determining a clearance range between the movable member and the valve stem during the movement of the movable member between the extreme closed and open positions, determining, in the clearance range, intermediate positions reached by the movable member as a function of different values of an electrical control parameter of the electromagnetic device, and using positional feedback control to control the electromagnetic means, using one of the intermediate positions as a setpoint value, according to the desired performance of the actuator. | 11-20-2008 |
20100271157 | ELECTROMAGNETIC ACTUATOR HAVING PERMANENT MAGNETS PLACED IN THE FORM OF A V IN AN ELECTROMAGNETICALLY OPTIMIZED ARRANGEMENT - The invention relates to an electromagnetic actuator including an actuating member associated with an armature and able to move under the action of at least one electromagnet, a coil, and a core suitable for channeling a flux of the coil so that the flux closes within the armature, where the core includes a base from which branches extend, including a central branch around which the coil extends, and two permanent magnets which are associated with the core. The two permanent magnets are placed in the central branch of the core in order to form a V, which separates the central branch into two parts so that any section of the core or the armature through which the flux from one or the other of the permanent magnets can pass, has an area large enough to prevent saturation by this flux. | 10-28-2010 |
20100294221 | SET CONTAINING AN ELECTROMAGNET AND AN ELECTROMAGNETIC PALETTE, AND VALVE ACTUATOR COMPRISING SUCH A SET - The invention relates to a set containing an electromagnet ( | 11-25-2010 |
20120061598 | METHOD OF CONTROLLING AN ACTUATOR HAVING A MOVABLE MEMBER WITH POSITIONAL FEEDBACK CONTROL - A valve actuator for a combustion engine has a movable member for collaborating with a stem of a valve, and an electromagnetic device with a permanent magnet associated with a resilient device for moving the movable member between an extreme valve-closed position and an extreme valve-open position. A method of controlling the valve actuator has the steps of determining a clearance range between the movable member and the valve stem during the movement of the movable member between the extreme closed and open positions, determining, in the clearance range, intermediate positions reached by the movable member as a function of different values of an electrical control parameter of the electromagnetic device, and using positional feedback control to control the electromagnetic device, using one of the intermediate positions as a setpoint value, according to the desired performance of the actuator. | 03-15-2012 |
20140034362 | PRINTED CIRCUIT BOARD WITH AN INSULATED METAL SUBSTRATE - The invention relates to a printed circuit board ( | 02-06-2014 |
Patent application number | Description | Published |
20140345606 | DETECTION OF AEROSOL-FORMING SUBSTRATE IN AN AEROSOL GENERATING DEVICE - There is provided an aerosol generating device, including a heater element configured to heat an aerosol-forming substrate; a power source connected to the heater element; and a controller connected to the heater element and to the power source, wherein the controller is configured to control the power supplied to the heater element from the power source to maintain the temperature of the heater element at a target temperature, and is configured to compare a measure of power supplied to the heater element or energy supplied to the heater element from the power source to a threshold measure of power or energy to detect the presence of an aerosol-forming substrate close to the heater element or a material property of an aerosol-forming substrate close to the heater element. | 11-27-2014 |
20140345633 | AEROSOL GENERATING SYSTEM WITH CONSUMPTION MONITORING AND FEEDBACK - An aerosol-generating system for oral or nasal delivery of a generated aerosol to a user is provided, including a heater element configured to heat an aerosol-forming substrate to generate an aerosol; a power source; a controller configured to control operation of the heater element, the controller including or being connected to a means to detect a change in air flow past the heater element; first data storage means for recording detected changes in airflow past the heater element and data relating to the operation of the heater element; second data storage means including a database relating changes in airflow and data relating to the operation of the heater element to the properties of the aerosol delivered to the user; and an indication means coupled to the second data storage means for indicating to the user a property of the aerosol delivered to the user. | 11-27-2014 |
20150230521 | AEROSOL GENERATING DEVICE WITH AIR FLOW DETECTION - There is provided an aerosol generating device configured for user inhalation of a generated aerosol, including a heater element configured to heat an aerosol-forming substrate; a power source connected to the heater element; and a controller connected to the heater element and to the power source, wherein the controller is configured to control the power supplied to the heater element from the power source to maintain the temperature of the heater element at a target temperature, and is configured to monitor changes in the temperature of the heater element or changes in the power supplied to the heater element to detect a change in air flow past the heater element indicative of a user inhalation. The controller may determine when a user has inhaled and may use this for dynamic control of the device as well as provide user inhalation data for subsequent analysis. | 08-20-2015 |