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| Number | Title | Issue Date |
| 8079269 | Electrostatic pressure sensor with porous dielectric diaphragm A pressure sensor comprises a first pressure chamber containing fill fluid at a first pressure, a second pressure chamber containing fill fluid at a second pressure, a porous dielectric diaphragm having first and second major surfaces exposed to the first and second... | 12/20/2011 |
| 8020449 | Pressure sensor with secondary seal An apparatus for sensing pressure is provided comprising a housing, electronics, a pressure sensor and a secondary seal. The housing comprises an interior bore and a first end, with the interior bore forming an opening at the first end. The electronics may be dispos... | 09/20/2011 |
| 7997142 | Low pressure sensor device with high accuracy and high sensitivity Pressure non-linearity in a low pressure sensor device formed from a silicon diaphragm with an embedded piezoresistive transducer is reduced by using a shallow boss or thin stiffener on an ultra-thin diaphragm while the pressure sensitivity of the device is increase... | 08/16/2011 |
| 7954382 | Pressure-measuring device A pressure-measuring device is situated in a chamber of an internal combustion engine. The pressure-measuring device has a housing, a force-transmitting element that protrudes partly from the housing at a chamber-side opening of the housing, and a pressure sensor th... | 06/07/2011 |
| 7921723 | Membrane unit, housing of a pressure measuring unit and pressure measuring unit A membrane unit configured for use in a housing of a pressure measuring unit, preferably for measuring pressure in an extra-corporal blood circuit, has a flexible membrane and a fixing ring which is integral with the membrane so that the membrane and the fixing ring... | 04/12/2011 |
| 7878069 | Torque insensitive header assembly There is disclosed a high pressure sensing header which is relatively insensitive to mounting torque. Essentially the header consists of an outer torque isolating shell which has a “C” shaped cross section with the cylindrical shell surrounding an inner “H” ... | 02/01/2011 |
| 7845235 | Non-invasive system and method for measuring vacuum pressure in a fluid A noninvasive system and method for measuring vacuum pressure in a fluid in accordance with the present invention generally includes a chamber with two interconnected diaphragms having different surface areas and a force transducer that makes contact with the smalle... | 12/07/2010 |
| 7823455 | Low pass filter semiconductor structures for use in transducers for measuring low dynamic pressures in the presence of high static pressures A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. The filter receives a high and very low frequency static pressure attendant with a high frequency low dynamic pressure at one end, the filter operates to filter sai... | 11/02/2010 |
| 7814798 | Diaphragm structure and method of manufacturing a diaphragm structure In a particular embodiment, a process transmitter includes a corrosion resistive housing including a flange portion, where the corrosion resistive housing is formed from a first material. The process transmitter also includes an outer ring formed from a second mater... | 10/19/2010 |
| 7806001 | Multi-diaphragm pressure sensors The present invention relates to a pressure sensor comprising multiple flexible diaphragms to which are affixed, within which are embedded, or which themselves constitute part of transducer elements that are connected together electrically, providing greater sensiti... | 10/05/2010 |
| 7802481 | High-pressure sensor device and method for manufacturing same A high-pressure sensor device has a pressure sensor element and an electric circuit, in particular in the form of a semiconductor component, the pressure sensor element having a membrane deformable under the effect of pressure, and a functional layer, which experien... | 09/28/2010 |
| 7798007 | Hydraulic pressure intermediary A hydraulic pressure intermediary includes: a platform, which has a bowl-shaped surface having an annular, platform-surface edge region, a platform-surface central region depressed relative to the platform-surface edge region and surrounded by the platform-surface e... | 09/21/2010 |
| 7765874 | Vacuum measuring cell with membrane A vacuum measuring cell with a membrane between two planar housing parts has a first housing part forming a reference vacuum volume and the second housing part forming a measuring vacuum volume with a connection for the medium to be measured and a mechanism for meas... | 08/03/2010 |
| 7739915 | Reinforced elastomeric diaphragm A diaphragm is provided that includes a plurality of zonal portions that define reinforced and non-reinforced areas of the diaphragm. A first zonal portion extends from a marginal edge portion toward a central portion and is formed of a fabric material. A second zon... | 06/22/2010 |
| 7665365 | Pressure sensor and attachment structure of pressure sensor A pressure sensor comprises: a case; a detection unit attached to one end of the case; a housing member coupled with the one end of the case, the housing member including a first connection member, a second connection member, a passage and a pressure introduction ho... | 02/23/2010 |
| 7661318 | Stress isolated pressure sensing die, sensor assembly inluding said die and methods for manufacturing said die and said assembly The invention concerns a pressure sensing die to be mounted on a base, comprising: a diaphragm structure with a deflectable pressure sensing diaphragm whose deflection is representative of the pressure and sensing elements for dete... | 02/16/2010 |
| 7640812 | Flexible board sensor and manufacturing method of sensor A cap is provided on a diaphragm, and a first end of a flexible board is connected to the cap. A cover is attached to the cap. The cover directs a second end of the flexible board in a direction away from the diaphragm held by a joint so that the flexible board is s... | 01/05/2010 |
| 7628078 | Combustion pressure sensor The pressure sensor includes a first tubular member including at one end portion thereof a sensing section outputting an electrical signal indicative of a pressure applied thereto, and an opening section formed at the other end portion thereof, a second tubular memb... | 12/08/2009 |
| 7603907 | Membrane unit, housing of a pressure measuring unit and pressure measuring unit A membrane unit configured for use in a housing of a pressure measuring unit, preferably for measuring pressure in an extra-corporal blood circuit, has a flexible membrane and a fixing ring which is integral with the membrane so that the membrane and the fixing ring... | 10/20/2009 |
| 7597004 | Apparatus and method for eliminating varying pressure fluctuations in a pressure transducer A single pressure sensing capsule has a reference pressure ported to the rear side of a silicon sensing die. The front side of the silicon sensing die receives a main pressure at another port. The silicon sensing die contains a full Wheatstone bridge on one of the s... | 10/06/2009 |
| 7568394 | Enhanced diaphragm for pressure sensing system and method An enhanced pressure sensing system and method use an external diaphragm to address issues involved with accurate and prolonged measurement of fluid pressure, such as of blood flowing in a vascular structure. Some external diaphragms include a metallized layer or ot... | 08/04/2009 |
| 7568393 | Air-pressure sensor for side-impact detection An air-pressure sensor for side-impact sensing, and a pressure-entry channel, which conveys the air pressure to a pressure-sensor element. The pressure-entry channel has multiple angles. ... | 08/04/2009 |
| 7559246 | Sensor for measuring low dynamic pressures in the presence of high static pressures A sensor is described, which basically consists of a leadless high sensitivity differential transducer chip which responds to both static and dynamic pressure. Located on the transducer are two sensors. One sensor has a thicker diaphragm and responds to both static ... | 07/14/2009 |
| 7555957 | Pressure sensor equipped with pressure sensing diaphragm A pressure sensor is provided which may be employed in measuring the combustion pressure in an internal combustion engine. The pressure sensor is equipped with a pressure sensing diaphragm assembly which includes a first diaphragm, a second diaphragm, and liquid or ... | 07/07/2009 |
| 7546772 | Piezoresistive pressure sensor A pressure sensor includes a housing portion with a fluid inlet and a polymer element within the housing portion. The polymer element may be coated with piezoresistive material to form a first resistor and may have associated electrodes. The polymer element includes... | 06/16/2009 |
| 7543501 | Self-calibrating pressure sensor The present invention is system and method for providing a self-calibrating pressure sensor. A pressure sensor apparatus comprises a diaphragm, at least one driving element operably coupled to the diaphragm configured to induce deflection in the diaphragm, and at le... | 06/09/2009 |
| 7540197 | Sensors, methods and systems for determining physical effects of a fluid Sensors, methods and systems detect physical effects (e.g., corrosion, erosion, scaling and/or oxidation) of a fluid in contact with a diaphragm associated with a sensor assembly. The diaphragm preferably exhibits a first mechanical response when initially placed in... | 06/02/2009 |
| 7530275 | Pressure sensor set in an opening of a wall The invention refers to a pressure sensor comprising a membrane which separates a measuring device receiving the deformation of the membrane caused by pressure from the pressurised pressure space. The pressure sensor is formed by a basic body. The pressure se... | 05/12/2009 |
| 7526960 | Pressure transmitting connector for an endoscopy system The inventive pressure transmitting connector, in particular for an endoscopy system includes a fluid transporting channel, a blind compartment which opens towards the transport channels by a pipe and closed by a membrane which is deformable according to a pressure ... | 05/05/2009 |
| 7509865 | Pressure differential sensor comprising an excess-load membrane A pressure difference transducer includes a hydraulic body, in which is formed an overload chamber containing an overload membrane. The overload chamber divides the overload chamber into a high-pressure chamber portion and a low-pressure chamber portion. The high-pr... | 03/31/2009 |
| 7503220 | Pressure sensor using near net shape sintered ceramics A capacitive pressure sensor is formed with sensor body and diaphragm components made of near net shapeable sintered ceramic. In one configuration, the differential pressure sensor has two sintered ceramic cell halves with an internal sintered ceramic diaphragm capt... | 03/17/2009 |
| 7497126 | Pressure sensor In a pressure sensor comprising a diaphragm formed on a portion of a chip made of semiconductor material and that senses pressure on the diaphragm by electrically converting the displacement corresponding to that pressure, the provision of the diaphragm with an aspe... | 03/03/2009 |
| 7497125 | Pressure sensor with diaphragm for detecting pressure A pressure sensor has a diaphragm with a first layer and a second layer, a pressure transmitting member being in contact with the second layer, and a sensing element. The diaphragm is deformable in response to a pressure applied on a front surface of the first layer... | 03/03/2009 |
| 7493819 | Micromechanical pressure sensor system A micromechanical pressure sensor includes a substrate having a front side and a back side, the front side facing a medium and the back side being situated on the opposite side of the substrate. A sensor diaphragm having at least one sensor area is situated on the f... | 02/24/2009 |
| 7487681 | Pressure sensor adjustment using backside mask Methods and apparatus for an absolute or gauge pressure sensor having a backside cavity with a substantially vertical interior sidewall. The backside cavity is formed using a DRIE etch or other MEMS micro-machining technique. The backside cavity has an opening that ... | 02/10/2009 |
| 7475597 | Stress isolated pressure sensing die The invention relates to a pressure sensing die to be mounted on a base, comprising: a sensing structure comprising: a diaphragm structure with a deflectable sensing diaphragm whose deflection is repres... | 01/13/2009 |
| 7454975 | Expansion chamber for use with a pressure transmitter A pressure monitoring system provides a pressure sensor and a body that has a first coefficient of thermal expansion and includes at least one opening for accessing a process fluid. At least one isolation diaphragm is coupled to the body and positioned in the at lea... | 11/25/2008 |
| 7451653 | Pressure sensor A pressure sensor for measuring an external pressure fabricated upon a ceramic substrate penetrated by a via extending from the top to the bottom of the ceramic substrate is disclosed. A sacrificial layer is deposited on a portion of the top of the ceramic substrate... | 11/18/2008 |
| 7437939 | Pressure and mechanical sensors using titanium-based superelastic alloy Pressure and mechanical sensors include a sensing component formed of a titanium and tantalum alloy having an elastic (Young's) modulus of less than about 80 GPa and a tensile strength of greater than about 1,000 MPa. The high strength and low elastic modulus, toget... | 10/21/2008 |
| 7437910 | Pressure differentiator fitted with a temperature equalizing material An object of the invention is to provide a pressure differentiator capable of improving measurement accuracy. The pressure differentiator of the invention includes an isothermal pressure vessel 1, a narrow tube 3 for connecting an object to be m... | 10/21/2008 |
