Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8096189 | Physical quantity sensor and method for manufacturing the same A physical quantity sensor includes two substrates and a movable electrode that is disposed between the two substrates and is bonded to the two substrates. In the physical quantity sensor, the movable electrode has an elastically deformable diaphragm and one of the ... | 01/17/2012 |
| 7992445 | Pressure sensor In a pressure sensor including a pressure detecting element in an intermediate portion or at a deep side of a through hole formed in a protrusion, a body portion (a base portion and the protrusion) is made of ceramic or an insulative resin material and molded into a... | 08/09/2011 |
| 7886609 | Pressure sensor package A semiconductor package (10) including a pressure sensor die (14) has an interconnect layer (22) formed over a first major surface of the pressure sensor die (14). An encapsulant (18) encapsulates a second major surface and sides o... | 02/15/2011 |
| 7854171 | Temperature compensated miniature pressure sensor The present invention relates to a temperature-compensated pressure sensor assembly for fitting within the valve stem of a vehicle tire. The assembly includes a substrate assembly defining a plurality of holes. A pressure sensor is mounted to the substrate assembly.... | 12/21/2010 |
| 7806002 | Capacitive sensing in an automotive mirror An automotive mirror assembly includes a mirror and transparent substrate adjacent to the mirror. The patterned coating is attached to transparent substrate and defines at least part of capacitive element. A capacitance sensor is in communication with the patterned ... | 10/05/2010 |
| 7775118 | Sensor element assembly and method Described herein is the sense element assembly for a capacitive pressure sensor and method for creating same that has increased sensitivity without additional size. The sense element assembly and method includes fabricating an off-centered elliptically shaped center... | 08/17/2010 |
| 7765875 | High temperature capacitive static/dynamic pressure sensors Disclosed is a capacitive pressure probe for high temperature applications, such as for use in a gas turbine engine. The capacitive probe or pressure sensor of the present invention includes, inter alia, a sensor housing that defines an interior sensing chamber havi... | 08/03/2010 |
| 7739916 | Gas pressure sensor with temperature compensation A pressure sensor for sensing a fluid pressure comprising: a first chamber including a first conductive membrane, wherein a fluid is sealed within the first chamber at a reference pressure such that the first conductive membrane deflects from pressure differences be... | 06/22/2010 |
| 7614308 | Diaphragm pressure measuring cell arrangement A diaphragm pressure measuring cell arrangement has a housing body at least partly made of sapphire material and a planar sapphire diaphragm with a peripheral edge joined by a first edge seal to the housing body to form a reference vacuum chamber. An outer surface o... | 11/10/2009 |
| 7549342 | Capacitative pressure sensor for oxidative environments A capacitative pressure sensor (30) for harsh environments such as vehicle tires. The sensor has two opposing electrodes (36 and 50). One electrode is a membrane (50) that extends between fluid at a reference pressure and fluid at the pre... | 06/23/2009 |
| 7533573 | Pressure sensor including temperature adjustment A pressure sensor for sensing a fluid pressure comprising: a first chamber including a first conductive membrane, wherein a fluid is sealed within the first chamber at a reference pressure such that the first conductive membrane deflects from pressure differences be... | 05/19/2009 |
| 7516669 | Capacitance sensing circuit for a pressure sensor The invention provides for a capacitance sensing circuit for a pressure sensor. The pressure sensor includes a sensor membrane and a compensation membrane. The circuit includes a controller arranged in signal communication with a charge amplifier, a charge injector ... | 04/14/2009 |
| 7478560 | Sensor apparatus responsive to pressure and temperature within a vessel A sensor apparatus includes pressure and temperature sensors for measuring the pressure and temperature of high-pressure fluid media within a vessel. The pressure sensor is disposed in a sensor cavity that is coupled to a measurement port, and the leads of a tempera... | 01/20/2009 |
| 7461558 | Capacitive pressure sensor with sealed reference chamber A capacitive pressure sensor includes a substrate assembly. The substrate assembly includes a conductive layer and defines a plurality of channels terminating in closed ends. A conductive membrane is mounted to the substrate assembly so that a sealed reference chamb... | 12/09/2008 |
| 7430919 | Capacitive pressure sensor with reference chamber A capacitive pressure sensor includes a substrate assembly having a conductive layer. A conductive membrane is mounted to the substrate assembly so that a sealed reference chamber is defined by the conductive membrane and the substrate assembly. A cap is arranged on... | 10/07/2008 |
| 7415886 | Pressure sensor with deflectable diaphragm A pressure sensor for sensing a pressure of a process fluid includes a sensor body having a cavity formed therein. A deflectable diaphragm is positioned in the cavity and deflects in response to a pressure applied to the cavity. An electrode on the diaphragm forms a... | 08/26/2008 |
| 7409867 | Pressure sensor using light source A pressure sensor includes a structure that deforms in response to an applied pressure. A light source is directed at the structure. This provides a reflection from the structure. A sensor is arranged to sense the reflection and provide an output related to the appl... | 08/12/2008 |
| 7395716 | Variable capacitance measuring device A variable capacitance measuring device can comprise any one or more features in various different embodiments allow a reliable, compact device to be achieved. A capacitor electrode, a gettering housing, and pinch-off connector may be aligned along a common axis may... | 07/08/2008 |
| 7395717 | Flexible capacitive sensor The invention relates to a flexible, resilient capacitive sensor suitable for large-scale manufacturing. The sensor comprises a dielectric, an electrically conductive layer on the first side of the dielectric layer, an electrically conductive layer on a second side ... | 07/08/2008 |
| 7389697 | Pressure sensor for detecting small pressure differences and low pressures A capacitive pressure sensor of substantially ceramic material comprises a thick base plate (100), a front plate (140) having the same thickness as the base plate and a movable diaphragm (120) located between the front plate and the base plate. ... | 06/24/2008 |
| 7383737 | Capacitive pressure sensor A capacitive pressure sensor includes a electrically conductive, generally piston shaped diaphragm with a flexible base wall configured to deflect under pressure. The diaphragm is generally U-shaped in cross section. The base wall includes an upper, flat sensing sur... | 06/10/2008 |
| 7381969 | Load lock control A control for pressurizing a load lock. The control initiates pressurization of the loadlock interior by coupling a source of gas to the loadlock interior. A representative load lock includes a pressure sensor and multiple valves to atmosphere where at least one suc... | 06/03/2008 |
| 7373833 | MEMS pressure sensing device A pressure sensing system formed in a monolithic semiconductor substrate. The pressure sensing system comprises a pressure sensing device formed on the monolithic semiconductor substrate. The pressure sensing device is adapted to be disposed in an environment for de... | 05/20/2008 |
| 7367234 | Pressure sensor To accurately set a detection axis of a sensor even when the sensor is attached to an inclined surface, provided is: a sensor responsive to an operation to a predetermined detection axis. A sensor device accommodates this sensor 1 and is a lead provided for c... | 05/06/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7368921 | Printed capacitive sensor The invention relates to a flexible, resilient capacitive sensor suitable for large-scale manufacturing. The sensor includes a dielectric, an electrically conductive detector and trace layer on the first side of the dielectric layer comprising a detector and trace, ... | 05/06/2008 |
| 7363819 | High-pressure sensor housing which is simplified by means of a connection element (also emc) A device for measuring pressure, in particular for measuring high pressure, is provided, having a pressure sensor situated in a sensor housing, the sensor housing having a first sensor housing part provided with a pressure connecting piece and a second sensor housin... | 04/29/2008 |
| 7363814 | Multi-axial angular velocity sensor An angular velocity sensor for detecting angular velocity about a Z-axis in an XYZ coordinate system has a substrate oscillator, a flexible member for connecting the oscillator to a casing, a device for oscillating the oscillator in an X-axis direction, and a detect... | 04/29/2008 |
| 7360429 | High sensitivity pressure actuated switch based on MEMS-fabricated silicon diaphragm and having electrically adjustable switch point A pressure actuated switch for a pressure control region includes a diaphragm with a first electrically conductive surface and a second conductive surface electrically isolated from the first conductive surface. The switch also includes an evacuated cavity disposed ... | 04/22/2008 |
| 7360431 | Pressure sensor device including a diaphragm and a stopper member having a curved surface facing the diaphragm The pressure sensor device has a laminated diaphragm (12) in which a strain resistance gauge is formed in a surface and a stopper member (13) including a concave portion forming a curved surface parallel to a surface formed by displacement of the diaph... | 04/22/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7360455 | Force detector and acceleration detector and method of manufacturing the same An electrode layer is formed on the upper surface of a first substrate, and a processing for partially removing the substrate is carried out in order to allow the substrate to have flexibility. To the lower surface of the first substrate, a second substrate is conne... | 04/22/2008 |
| 7357033 | Manual resuscitators with integral manometer A manometer integrated into a manual resuscitator includes a housing with a communication path, and a pressure gauge integrally forming part of the housing. A sensing chamber and an atmospheric chamber are separated by a diaphragm subject to distortion by differenti... | 04/15/2008 |
| 7353711 | Capacitive sensor A capacitive sensor including a housing having a hermetically sealed cavity, a plate in the cavity, a diaphragm forming a part of the cavity and spaced from the plate, a conductive layer on the first diaphragm, and a second conductive layer on the plate, the first a... | 04/08/2008 |
| 7354190 | Two-stage mixing system, apparatus, and method A two-stage mixing system, apparatus, and method produces a solution including a first substance and a second substance in a predetermined ratio by first mixing the first substance with a first liquid to produce a first solution and then mixing the first solution wi... | 04/08/2008 |
| 7353719 | Pressure sensor and method for fabricating the same A pressure sensor comprising a plurality of sensor parts arranged in matrix. A first electrode being connected with first wiring and a second electrode being connected with second wiring are disposed oppositely through a cavity part in the sensor part. The second el... | 04/08/2008 |
| 7356423 | Apparatus and method for reading out a differential capacity with a first and second partial capacity An apparatus for reading out a differential capacity with a first and second partial capacity includes a first oscillator having a first frequency-determining element connectable to the first partial capacity and a second oscillator having a second frequency-determi... | 04/08/2008 |
| 7350417 | Pressure sensor with conductive laminate membrane A pressure sensor (30) for sensing a fluid pressure in harsh environments such as the air pressure in a tire, by using a chamber (58) partially defined by a flexible membrane (50), the flexible membrane (50) is a laminate having at least ... | 04/01/2008 |
| 7347099 | Pressure transducer with external heater An improved pressure transducer is disclosed. The transducer includes a connector, an enclosure, a sensor portion, and an external heater disposed to heat the sensor portion. In some aspects, the sensor portion includes a sensor constructed from a brittle material a... | 03/25/2008 |
| 7334480 | Dual membrane sensor for temperature compensated pressure sensing A pressure sensor that has a sensor membrane for exposure to fluid at a pressure to be sensed, and a compensation membrane sealed from the fluid at the pressure to be sensed. Associated circuitry connected to the sensor membrane converts deflection into an output si... | 02/26/2008 |
