Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8122770 | Signal transmission system A single wire interface for a transducer transmits the transducer output as a frequency modulated signal over one single wire during one interval. During a second interval a reference signal is transmitted as a frequency modulated signal. Both the transducer output ... | 02/28/2012 |
| 8096187 | Pressure sensor element and pressure sensor A pressure sensor element includes: a package, a first diaphragm provided on a first surface of the package, a second diaphragm provided on a second surface of the package, and a pressure sensing element disposed in the package, the pressure sensing element includin... | 01/17/2012 |
| 8091431 | Pressure sensor A pressure sensor includes: a housing; a pressure input orifice opened at a pipe sleeve of the housing; a diaphragm sealing the pressure input orifice, the diaphragm having a first surface serving as a pressure receiving surface; a pressure sensitive unit using a di... | 01/10/2012 |
| 8015881 | Pressure sensor A pressure sensor includes: a housing; an attachment portion coupled to the housing and having a pressure input orifice; a diaphragm sealing the pressure input orifice of the attachment portion and having a first surface that is a pressure receiving surface; and a p... | 09/13/2011 |
| 8011252 | Pressure sensor A pressure sensor includes: a housing having openings at both ends thereof; a pair of pressure-receiving devices configured to seal the openings respectively and transmit a pressure from the outside to the interior of the housing; a force transmission device configu... | 09/06/2011 |
| 8006565 | Pressure sensor grid A pressure sensor grid can comprise a plurality of bottom wires, arranged substantially parallel to each other and overlaid by a plurality of top wires arranged substantially perpendicular to the bottom wires. Each intersection of the top and bottom wires includes a... | 08/30/2011 |
| 7987726 | Method and apparatus for diagnosis of liquid losses in pressure measuring transducers filled with pressure transmitting liquids A method and apparatus for diagnosis of liquid losses in pressure measuring transducers including a pressure sensor arranged in a pressure measuring chamber, and a pressure transfer structure connected to the pressure measuring chamber A sealed inner space of a sepa... | 08/02/2011 |
| 7942062 | Pressure sensor and method for manufacturing the same A pressure sensor includes: a housing; an attachment having a pressure input orifice communicating with an interior of the housing; a first diaphragm that seals an opening of the pressure input orifice of the attachment, an external surface of the first diaphragm be... | 05/17/2011 |
| 7779700 | Pressure sensor A pressure sensor includes: a housing; a pressure input orifice opened at a pipe sleeve of the housing; a diaphragm sealing the pressure input orifice, the diaphragm having a first surface serving as a pressure receiving surface; a pressure sensitive unit using a di... | 08/24/2010 |
| 7685880 | Signal transmission system A single wire interface for a transducer transmits the transducer output as a frequency modulated signal over one single wire during one interval. During a second interval a reference signal is transmitted as a frequency modulated signal. Both the transducer output ... | 03/30/2010 |
| 7681456 | Field device including a capillary tube having a non-cylindrical lumen In a particular embodiment, a field device is disclosed that includes a housing defining a fluid cavity and a sensor cavity and having an isolation barrier to isolate the fluid cavity from the sensor cavity. The field device further includes a pressure sensor dispos... | 03/23/2010 |
| 7624642 | Differential pressure sensor isolation in a process fluid pressure transmitter A differential pressure transmitter includes first and second process fluid inlets. A differential pressure sensor is disposed within the transmitter and has first and second sensor inlets. A first isolator diaphragm is located proximate the first process fluid inle... | 12/01/2009 |
| 7409866 | Signal transmission system A single wire interface for a transducer transmits the transducer output as a frequency modulated signal over one single wire during one interval. During a second interval a reference signal is transmitted as a frequency modulated signal. Both the transducer output ... | 08/12/2008 |
| 7404330 | Pressure sensor A pressure sensor includes a metal housing and a semiconductor chip. The housing has a diaphragm unitary with the housing and an inlet for introducing fluid to the diaphragm. The inlet has a first end exposed to the diaphragm and a second end exposed to an outside o... | 07/29/2008 |
| 7363820 | Ultra high temperature hermetically protected wirebonded piezoresistive transducer An ultra high temperature hermetically protected transducer includes a sensor chip having an active area upon which is deposited piezoresistive sensing elements. The elements are located on the top surface of the silicon wafer chip and have leads and terminals exten... | 04/29/2008 |
| 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 |
| 7352287 | Pneumatic controller A pneumatic controller for controlling a device. ... | 04/01/2008 |
| 7343810 | Pressure sensor and manufacturing method therefor A pressure sensor is composed of a pressure housing having a pressure chamber inside and a pressure sensitive element arranged in the pressure chamber, and a joint housing having a fluid passage for leading fluid into the pressure housing, wherein the pressure housi... | 03/18/2008 |
| 7325460 | Force sensor method and construction A method of making a force sensor, the force sensor being particularly sensitive the axial component of a force applied along a predetermined axis, of the type including a force-receiving membrane deformable by an applied force to be sensed, the method comprising: p... | 02/05/2008 |
| 7313969 | Pressure sensor In a pressure sensor which has a metal housing 12 containing a sensor chip 11 and a joint housing 14 and in which an insulating member 15 is arranged to electrically insulate both of the metal housing 12 and the joint housing 14... | 01/01/2008 |
| 7278317 | Pressure measurement Pressure measurement may be achieved by using a pressure-conveyance media that responds to externally applied pressure to convey pressure to a pressure sensor. With the conveyance of pressure, the pressure measurement may be accomplished by determining a pressure of... | 10/09/2007 |
| 7275444 | Pressure transducer apparatus adapted to measure engine pressure parameters A pressure header assembly has a closed front and back surface. The back surface has an aperture for accommodating a separate dual die pressure header. The dual die pressure header has an absolute and differential pressure sensor positioned thereon. A differential p... | 10/02/2007 |
| 7270010 | System and method for pressure measurement A pressure measurement system may provide ready manufacturing, reliable operation, and/or enhanced performance by using a circuit board housing. In particular implementations, a pressure measurement system includes a pressure inlet joint, a pressure detecting compon... | 09/18/2007 |
| 7258020 | Pressure sensor with conductive ceramic membrane A pressure sensor for sensing a fluid pressure in harsh environments such as the air pressure in a tire formed on a wafer substrate. Associated circuitry deposited in CMOS layers on the wafer substrate has a conductive layer at least partially overlying the associat... | 08/21/2007 |
| 7249501 | Pressure distribution measurement system A pressure distribution measurement system for measuring a pressure distribution on a measurement object. A flexible sheet-form pressure detection member includes a plurality of pressure passages extending in parallel and a pressure detection hole opened in each of ... | 07/31/2007 |
| 7219554 | Semiconductor pressure sensor A semiconductor pressure sensor is not influenced by a charged object in a fluid to be measured or an electric field from the outside, so satisfactory sensitivity and accuracy can be ensured. The semiconductor pressure sensor is provided with a diaphragm 4 th... | 05/22/2007 |
| 7216546 | Pressure sensor having integrated temperature sensor A pressure sensor includes a case, terminals, a pressure sensing element, a port, and a temperature sensing element. The terminals are assembled to the case by insert molding and connectable to an external device. The pressure sensing element is electrically connect... | 05/15/2007 |
| 7213463 | Pressure sensor having liquid in a pressure sensing chamber A pressure sensor includes a sensor chip, a pressure receiving diaphragm, a connector case, and a case. A pressure sensing chamber is provide in the connector case and filled with oil. The sensor chip is arranged in the chamber and the diaphragm is fixed to the conn... | 05/08/2007 |
| 7213464 | System for visually monitoring pressure in an enclosed space A compliant balloon having an outer reflective surface which is positioned next to a transparent window which has an opaque element thereon, the reflection of the opaque element from the outer reflective surface of the balloon being visible when the outer reflective... | 05/08/2007 |
| 7185549 | Pressure point detector A pressure point detector has a simple structure and is capable of detecting which location of a two-dimensional surface such as a circle a pressure is applied can be detected. The pressure point detector includes a flexible insulation member in a predetermined shap... | 03/06/2007 |
| 7183620 | Moisture resistant differential pressure sensors A differential pressure sensor has a semiconductor wafer having a top and bottom surface. The top surface of the wafer has a central active area containing piezoresistive elements. These elements are passivated and covered with a layer of silicon dioxide. Each eleme... | 02/27/2007 |
| 7176811 | Pressure altimeter electrical testing A test apparatus and method of electrical testing especially useful for verifying normal performance of essential functions in an aircraft atmospheric pressure responsive auxiliary altimeter under either of flight line or maintenance shop conditions. The tester prov... | 02/13/2007 |
| 7159467 | Pressure sensor with conductive ceramic 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 chamber (58) containing a fluid at a reference pressu... | 01/09/2007 |
| 7152477 | Pressure sensor A pressure sensor having a measuring cell (1) and sensor electronics (13) connected with the measuring cell (1), wherein the sensor electronics (13) and its electrical connections are protected from external influences, wherein on front s... | 12/26/2006 |
| 7137293 | Canister provided with a leak detection valve for treating evaporated fuel A canister has: a canister body including an adsorbent case which is provided with an adsorption chamber filled with an adsorbent and a fuel steam introduction port, a purge port and an air communication port which are communicated with the adsorption chamber; and a... | 11/21/2006 |
| 7136683 | Surface acoustic wave sensor and radio frequency identification interrogator fixture A wireless sensor fixture system and method are disclosed in which an antenna block is provided that includes a plurality of grooves, wherein such grooves maintain a plurality of antennas located on a portion of the antenna block. A top locator block can be position... | 11/14/2006 |
| 7131335 | Pressure sensor with barrier providing impending sensor failure indication A pressure transmitter for transfer of a pressure prevailing in a first medium onto a second medium, including a pressure chamber 4 in a platform 1, which chamber is separated from the first medium by means of a dividing membrane 2, wherein the ... | 11/07/2006 |
| 7117746 | Digital pressure gauge A digital pressure gauge comprises a power supply, an input button unit, a pressure sensor, a display unit, a warning unit, and a control unit. The control unit counts the number of operations and/or operation duration of the digital pressure gauge and generates an ... | 10/10/2006 |
| 7093494 | Micro-electromechanical pressure sensor A pressure sensor (30) for harsh environments such as vehicle tires, the sensor having a chamber (58) partially defined by a flexible membrane (50), the chamber (58) containing a fluid at a reference pressure. In use, the flexible membran... | 08/22/2006 |
| 7082835 | Pressure sensor apparatus and method A pressure sensor apparatus is disclosed herein, which generally includes a sensor element, a flexible sensor diaphragm in intimate contact with the sensor element at all pressure levels and temperatures, and a package base and a package cover for hermetically seali... | 08/01/2006 |
