Class / Patent application number | Description | Number of patent applications / Date published |
073722000 | Electromagnetic | 9 |
20080257055 | Mechanically Calibrated Analog Transducer for Position or a Related Physical Quantity - An analogue position transducer, usable for example as a pressure switch in a household appliance, including a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a first element engaged to the membrane so as to be mobile along with at least one portion of membrane in a predetermined direction (A) and a second element fixed to the casing and operatively coupled with the first element to provide a signal variable according to the relative position of the first element with respect to the second; in which between said first element and a portion of membrane there are interposed means for varying, along said predetermined direction, the relative position of said first element with respect to the portion of the membrane; the transducer also includes a contrast spring for the membrane fitted and preloaded between the casing and the membrane itself and means for adjusting the preload of the contrast spring. | 10-23-2008 |
20080282807 | RESONANT FREQUENCY PRESSURE SENSOR - A pressure sensor (S) includes an antenna member ( | 11-20-2008 |
20080314156 | Accurate Pressure Sensor - The invention relates to a pressure sensor capable of measuring pressure accurately, and more particularly, to a pressure sensor comprising a box-shaped magnet, optionally having an inclined upper surface with a right side portion protruding higher than a left side portion, wherein the magnet is configured to radiate linear magnetic flux density in response to a change in distance along a straight line spaced uniformly apart from an N or S pole surface, whereby the pressure sensor can accurately detect a displacement in distance (position) and thus a pressure difference based on the displacement. The pressure sensor further includes a pipe connecting negative and positive pressures, a diaphragm movable in response to a difference between negative and positive pressures, a diaphragm support attached to a side of the diaphragm, a magnet attached to the diaphragm support to radiate linear magnetic flux density, a spring supporting the magnet, and the diaphragm and upper and lower cases housing these components. | 12-25-2008 |
20100043563 | DIFFERENTIAL PRESSURE SENSOR - In order to reduce hysteresis and other noise components included in the output signal characteristic of a differential pressure sensor, an elastic reaction member which operates together with a diaphragm provided in a chamber of the differential pressure sensor includes a contact portion which contacts the diaphragm, and a plurality of springs which are arranged symmetrically about the contact portion. Each of the springs is a plate shaped or linear shaped spring which is bent into the form of a letter C, U, J, or V, and has one of its ends fixed to a wall which defines the chamber, while its other end is connected to the contact portion. When the contact portion shifts together with the diaphragm, the deformations of the plurality of springs are mutually balanced, so that rotation and horizontal deviation of the contact portion with respect to the diaphragm is suppressed. | 02-25-2010 |
20100132473 | METHOD AND APPARATUS FOR PRESSURE MEASUREMENT USING MAGNETIC PROPERTY - A pressure sensor includes a sensor body which is arranged to couple to a process pressure. The sensor body has a magnetic property which changes as a function of pressure applied by a process fluid. A sensor is coupled to the sensor body and is configured to measure pressure of fluid in the sensor body as a function of a change of magnetic property of the sensor body. | 06-03-2010 |
20110247424 | METHOD FOR MANUFACTURING MEASURING TRANSDUCERS - A method for manufacturing measuring transducers, especially pressure or pressure difference measuring transducers, in which a high degree of quality, safety and accuracy of measurement is achievable with little logistical and manufacturing effort. The measuring transducer has a memory readable and writable via an associated RFID interface, and at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable, wherein the sensor is equipped with sensor electronics, which serves to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, via which the sensor is supplied with energy, and via which measurement signals can be read out wirelessly. The measuring transducers and/or their sensors are subjected to at least one calibration and/or test procedure, in which the sensors are exclusively supplied with energy via their RFID transponders, and their measurement signals are read out via their RFID transponders, and measuring transducer specific and/or sensor specific data derived during the calibration and/or test procedure are stored in the memory via the RFID interface. | 10-13-2011 |
20120017689 | MODIFIED PRESSURE SENSOR FOR DETECTING OPERATING PARAMETERS OF AN ELECTRIC HOUSEHOLD APPLIANCE FEATURING A RELATIVELY MOVABLE COMPONENT - A modified inductive pressure sensor for detecting operating parameters of an electric household appliance such as a washing or drying machine, provided with a relatively movable component with respect to the carcass (tank or basket), of the type including a rigid casing accommodating a deformable membrane sensitive to hydraulic pressure, a core made of ferromagnetic material and operatively associated to the membrane, and a winding fixed to the casing and operatively coupled to the core to form a variable inductance inductor; wherein a mass is accommodated within the casing and in immediate proximity of said membrane, free to move with respect to the casing in at least one direction corresponding to the axis of the winding. | 01-26-2012 |
20140311248 | DIFFERENTIAL PRESSURE SENSOR - A differential pressure sensor includes a containment body defining a first and a second cavity separated by a separation wall; a piston housed slidably in the first cavity and comprising a magnet; a magnetic sensor housed in the second cavity near the separation wall for sensing the axial distance of the magnet from the separation wall; a positioning system housed in the second cavity and having one portion of a first axial end thereof which supports the magnetic sensor and is elastically yieldable in an axial direction and away from the separation wall, the positioning system being structured so that when it is moved towards the separation wall, the magnetic sensor contacts the latter before the positioning system reaches an axial stroke end, said stroke end being reached thanks to the above-mentioned elastic yielding. | 10-23-2014 |
20160076958 | DIFFERENTIAL PRESSURE SENSOR - A differential pressure measuring device ( | 03-17-2016 |