...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 8181530 | Leadless oil filled pressure transducer An oil-filled pressure transducer having reduced back pressure, comprising an alignment plate having a sensor accommodating aperture, a sensor module inserted into the sensor accommodating aperture, a header surrounding the alignment plate, the header having a protr... | 05/22/2012 |
| 8096186 | Systems and methods for measuring fluid pressure within a disposable IV set connected to a fluid supply pump Systems and methods of measuring pressure of fluid in a disposable IV set connected to a fluid supply pump is disclosed. At least one sensing arrangement coupled to the fluid supply pump is provided. A chamber having a movable element is provided, the movable elemen... | 01/17/2012 |
| 8061212 | Method of flip chip mounting pressure sensor dies to substrates and pressure sensors formed thereby A method of forming a sensor for sensing a physical property of a media. A substrate is provided having circuitry thereon including at least one electrical contact and a die is provided having disposed thereon corresponding electrical contacts and a sensing element ... | 11/22/2011 |
| 8056418 | Method and device for testing the functionality of an actuator having a pneumatic drive The invention relates to a method for monitoring the functionality of an actuator (1) having a pneumatic drive (2), in particular for monitoring an actuator (1) for a safety valve, including a magnetic valve (4) for controlling the pneuma... | 11/15/2011 |
| 8037770 | Pressure-sensor apparatus A pressure-sensing module includes a housing having a process-fluid port configured to be coupled to a process-fluid-flow circuit. The housing defines a first chamber into which the process fluid can flow through the process-fluid port. An isolator assembly is dispo... | 10/18/2011 |
| 8020448 | Pressure sensor with nonlinear characteristic curve A pressure sensor adapted to provide a high resolution at a low pressure and a high pressure of an operating range is provided. The pressure sensor includes a body having an interface sur ace, a membrane sealingly disposed in the cavity adjacent the interface surfac... | 09/20/2011 |
| 8011251 | Bifurcated pressure instrumentation rake The present application provides an instrumentation rake for use with a number of flow paths. The instrumentation rake may include a manifold, a first rake body connected to the manifold, and a second rake body connected to the manifold. A number of first rake body ... | 09/06/2011 |
| 7992442 | Component and method for its manufacture A method for reducing microcrack formation and crack growth in the glass carrier of a component having a micromechanical sensor element that is bonded to the glass carrier. The upper side of the glass carrier acts as a bonding surface for the sensor element. The rea... | 08/09/2011 |
| 7958784 | Pressure detector and electronic apparatus having the same A pressure detector configured to detect a predetermined pressure includes a housing having a concave that includes a perforation hole that perforates the housing, a sheet configured to cover the concave and to rupture when placed in an environment of the predetermi... | 06/14/2011 |
| 7934426 | Measurement cell system, in particular pressure measurement cell system The invention relates to a measurement cell system, in particular a pressure measurement cell system, comprising a measurement cell and a memory unit containing at least one stored measurement cell-based stored value. The measurement cell together with the memory un... | 05/03/2011 |
| 7921721 | Leadless oil filled pressure transducer An oil-filled pressure transducer including a glass pre-form having contact pins and a oil-filled tube, each running top to bottom through holes in the pre-form. The oil-filled tube extends beyond the top of the pre-form. A glass alignment plate has an alignment ape... | 04/12/2011 |
| 7878068 | Digital pressure sensor A digital pressure sensor, which is mounted on a pressure controller of a pneumatic tube system, includes a casing including a control circuit, which has a pressure sensing unit, therein, a display, which has a plurality of displaying units for showing numerals or i... | 02/01/2011 |
| 7866214 | Pressure gauge with hydraulic pressure transmission A pressure gauge, or transducer, for high-temperature applications, comprising a sensor module with a sensor body having a measuring cell chamber containing a pressure measuring cell. The pressure measuring cell can be subjected to the action of a pressure via a fir... | 01/11/2011 |
| 7814797 | Pressure sensor apparatus and pressure sensor built-in fluid control equipment A pressure sensor apparatus which can provide an integrated fluid control apparatus in which a pressure sensor is easily replaced independently, as well as achieving a more compact structure, and a pressure sensor built-in fluid control equipment. A pressure sensor ... | 10/19/2010 |
| 7793549 | Pressure gauge locking structure of paintball gun A pressure gauge locking structure of a paintball gun includes a rear cap and a pressure gauge. The rear cap is screwed to a rear end of a gun body and has a first end and a second end. The first end is formed with a recess for the pressure gauge to be secured there... | 09/14/2010 |
| 7765873 | Pressure diagnostic for rotary equipment A system comprises a rotary machine, a sensor and a processor. The rotary machine has a component that operates on a fluid. The sensor senses pressure in the fluid. The processor generates a diagnostic indicative of wear on the component, based on process noise on t... | 08/03/2010 |
| 7762139 | 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... | 07/27/2010 |
| 7762140 | Combined fluid pressure and temperature sensor apparatus A combined fluid pressure transducer and temperature sensor (10) has a housing (12) containing a variable capacitor (14) having a rigid substrate (14a) and attached flexible diaphragm (14b) in sealed, spaced apart rel... | 07/27/2010 |
| 7748275 | Pressure sensor for extracorporeal circulating circuit A pressure sensor for an extracorporeal circulating circuit includes a liquid chamber, a pressure measuring means, and a liquid flow path. The liquid chamber includes a reference surface not deformed by a pressure in the extracorporeal circulating circuit, a deformi... | 07/06/2010 |
| 7707891 | Optical interferometric pressure sensor A pressure measuring cell has a first housing body and a membrane arranged proximate the housing body, both of ceramic. The membrane has a peripheral edge joined to the first housing body to create a reference pressure chamber. A second housing body made of ceramic ... | 05/04/2010 |
| 7698951 | Pressure-sensor apparatus A sensing apparatus for determining the pressure of a fluid includes first and second support members. The first and second support members are configured to define at least one sealed chamber. A flexible diaphragm is disposed between the first and second support me... | 04/20/2010 |
| 7677106 | Internal pressure sensor A pressure sensor for sensing changes in pressure in an enclosed vessel may include a first chamber having at least one expandable section therein that allows that first chamber to change in length. A reference member mounted within the first chamber moves as a resu... | 03/16/2010 |
| 7669479 | Combined temperature and pressure transducer incorporating connector keyway alignment and an alignment method A transducer sensor is positioned within a hollow of the body of a housing. The housing has an extending alignment pin, which pin coacts with a corresponding slot or aperture in the wall of a vessel whose pressure or temperature is to be monitored. The transducer bo... | 03/02/2010 |
| 7661317 | High pressure transducer having an H shaped cross-section A high pressure transducer has an H shaped cross-section with a center arm of the H having a top and bottom surface with the top surface of the H accommodating four strain gauges. Two strain gauges are located at the center of the top portion of the center arm of th... | 02/16/2010 |
| 7647832 | Micromechanical device and method for producing a micromechanical device A micromechanical device and a method for producing this device are provided, the device having a sensor pattern that includes a spring pattern and a seismic mass. The seismic mass may be connected to the substrate material via the spring pattern, and a clearance ma... | 01/19/2010 |
| 7644620 | Sensor comprising a modular connection A sensor comprising a base body and a sensor element, in particular for transforming and/or transferring measuring variables. The sensor element is associated with a receiving element. ... | 01/12/2010 |
| 7634947 | Method and device for confirmation of the state of tightness of fastenings of railroad tracks A method and a device for confirmation automatically of the state of tightness of fastenings of railroad tracks are provided, so that from a train that is traveling over a track it is possible to detect a signal from each of the fastenings which indicates if the deg... | 12/22/2009 |
| 7614307 | Manifold assembly having a centralized pressure sensing package A hydraulic manifold assembly includes a manifold containing a plurality of hydraulic channels that direct fluid to a centralized location and a package disposed at the centralized location to measure fluid pressure at pressure ports corresponding to the hydraulic c... | 11/10/2009 |
| 7603906 | Piezoelectric sensor A piezoelectric sensor, preferably a pressure sensor, comprising at least two piezoelectric measuring elements placed in a housing, which are clamped between a membrane on the pressured side of the housing and a pick-up electrode electrically insulated against the h... | 10/20/2009 |
| 7581448 | Sensor and manufacturing method of sensor A pressure sensor is provided with a cap on a measuring portion of a diaphragm to which a first end of a flexible board is connected while a second end of the flexible board is connected to a circuit board spaced apart from the diaphragm. The flexible board is provi... | 09/01/2009 |
| 7568392 | Measuring apparatus for a mower A measuring apparatus for a mower includes a floor defining a downward recess with respect to a floor surface, and an air speed measuring device or air pressure measuring device disposed in the recess for measuring a speed or pressure of air blown by the mower. The ... | 08/04/2009 |
| 7559245 | Vacuum gauge and refrigeration system service tool, and methods of using the same A vacuum gauge has a scale having a safe zone indicia, a working zone indicia, an indicator to indicate a particular location on the scale, and a pressure sensing mechanism and housing having a pressure sensing port accessible for fluid connection to the refrigerati... | 07/14/2009 |
| 7555956 | Micromechanical device having two sensor patterns A micromechanical device and a method for producing this device are provided, two sensor patterns being provided in the semiconductor material to record two mechanical variables, in particular the pressure and the acceleration. The functionality of both sensor patte... | 07/07/2009 |
| 7546771 | Gas turbine pressure sensing systems and methods of assembly Methods and apparatus for sensing pressure in a hostile environment are described. In one example embodiment, a microwave radar based sensor is provided. The sensor is coupled to a signal conditioning unit. The signal conditioning unit includes at least one of a pro... | 06/16/2009 |
| 7540196 | Pressure transducer 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... | 06/02/2009 |
| 7530274 | Apparatus for providing an output proportional to pressure divided by temperature (P/T) A circuit produces an output that is proportional to the molar density of gas in a chamber. The circuit employs an operational amplifier which measures the temperature using a RTD or other element that changes resistance with temperature. The RTD is placed such that... | 05/12/2009 |
| 7513163 | Pressure sensor and device for measuring pressure A pressure sensor and a pressure measuring device are provided applicable to a variety of pressure detection targets and capable of measuring a surface pressure. The pressure sensor is configured by laminating a metal layer made of a metal film, an elastic member la... | 04/07/2009 |
| 7509863 | Measuring and testing device incorporating an air gauge The present invention relates to a measuring and testing device incorporating an air gauge capable of measuring dimensional characteristics of a tapered bore of a component. The measuring and testing device has an actuator for moving the air gauge or the component r... | 03/31/2009 |
| 7509864 | Paint spray gun with digital pressure gauge and relative humidity indicator removably mounted thereon A new and improved combination pressure gauge and relative humidity indicator for use upon a compressed air or gas too, such as, for example, a paint spray gun, comprises a housing within which a pressure transducer, for determining the pressure level of the incomin... | 03/31/2009 |
| 7500397 | Activated chemical process for enhancing material properties of dielectric films A method for restoring a dielectric constant of a layer of a silicon-containing dielectric material having a first dielectric constant and at least one surface, wherein the first dielectric constant of the layer of silicon-containing dielectric material has increase... | 03/10/2009 |