Kulite has over 340 Patents to date!

Recent Patent Approvals

Patent Title: Methods of Fabricating Silicon-On-Insulator (SOI) Semiconductor Devices Using Blanket Fusion Bonding
Patent No.: 9,721,832 B2
Date of Patent: August 1, 2017
Abstract:
A method for fabricating silicon-on-insulator (SOI) semiconductor devices, wherein the piezoresistive pattern is defined within a blanket doped layer after fusion bonding.  This new method of fabricating SOI semiconductor devices is more suitable for simpler large scale fabrication as it provides the flexibility to select the device pattern/type at the latest stages of fabrication.


Patent Title: Flexible Interconnect Structure for a Sensor Assembly
Patent No.: 9,723,719 B2
Date of Patent: August 1, 2017
Abstract:
This disclosure provides example methods, devices, and systems for a flexible interconnect structure for a sensor assembly.  In one configuration, a flexible interconnect structure may couple a first portion of a differential sensor structure to a second portion of the differential sensor structure.  Further, the flexible interconnect structure may couple the differential sensor structure to an external component such as a circuit board, used to receive measurement information from the differential sensor.


Patent Title: Two Lead Electronic Switch System Adapted to Replace a Mechanical Switch System
Patent No.: 9,716,495 B2
Date of Patent: July 25, 2017
Abstract:
Systems and methods are disclosed for a two lead electronic switch adapted to replace a mechanical switch.  In one embodiment, a device is provided that includes a sensor and an electronic circuit having a voltage limiting circuit.  The electronic circuit is configured to deactivate/activate the voltage limiting circuit to operate the electronic circuit in a first/second state in response to determining that an output of the sensor is less/more than a threshold voltage.  The circuit includes first and second terminals configured to receive a switch voltage used to provide power for the device.  The device sets the switch voltage to a first voltage level operative to power the electronic circuit and the sensor while the electronic circuit is operating in the first state and to a second voltage level operative to power the electronic circuit and the sensor while the electronic circuit is operating in the second state.


Patent Title: Systems and Methods for Compensating a Sensor
Patent No.: 9,709,452 B2
Date of Patent: July 18, 2017
Abstract:
Systems, methods, and apparatus for compensation of a sensor are presented.  A method is provided that includes determining a response of a sensor.  For example, a temperature response of a pressure sensor may be characterized.  In an example implementation, the sensor may be coupled to one or more input terminals, for example, that are configured for connecting to an input voltage source.  The sensor may also be coupled to one or more configurable resistor networks.  The sensor may further be coupled to one or more output terminals configured for providing an output signal.  The method further includes determining one or more compensation resistance values for compensating the determined response of the sensor.  The method includes selectively configuring, based at least in part on determining the one or more compensation resistance value, the one or more configurable resistor networks for compensating the response of the sensor.


Patent Title: Apparatus and Method for Eliminating Varying Pressure Fluctuations in a Pressure Transducer
Patent No.: 9,709,450 B2
Date of Patent: July 18, 2017
Abstract:
A differential pressure transducer employing a coiled tube to eliminate varying pressure fluctuations is provided.  In one embodiment, a method comprises receiving, at an inlet tube of a dampening chamber, a main pressure, wherein the main pressure includes a static pressure component and a dynamic pressure component; filtering, by the inlet tube, at least a portion of the dynamic pressure component of the main pressure; outputting, from the inlet tube, a first filtered main pressure; receiving, at a volume cavity of the dampening chamber, the first filtered main pressure, wherein the volume cavity is operatively coupled to the inlet tube; filtering, by the volume cavity, at least a portion of the dynamic pressure component of the first filtered main pressure; outputting, from the volume cavity, a second filtered main pressure; and wherein the dampening chamber is tuned to a predetermined resonance frequency.


Patent Title: Sensor Having Thermal Gradients
Patent No.: US 9,523,619
Date of Patent: December 20, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a sensor having thermal gradients. In one embodiment, a system may comprise a sensor assembly including a housing; a first header and a second header coupled to the housing; a first transducer coupled to the first header, wherein the first transducer is configured to measure a first pressure to generate a first pressure signal; a second transducer coupled to the second header, wherein the second transducer is configured to measure a second pressure to generate a second pressure signal; and wherein the first transducer and the second transducer are positioned in the housing such that a first temperature of the first transducer is about equivalent to a second temperature of the second transducer during operation of the sensor assembly.


Patent Title: Building Block Transducer Assembly
Patent No.: US 9,523,617
Date of Patent: December 20, 2016
Abstract:
A transducer assembly configured to accommodate a plurality of individually tunable sensing elements of various geometries and configurations by using a cap and an accompanying capillary tube. The configuration of the various embodiments described herein eliminate the header to flat plate welds of the prior art, and therefore better accommodates a plurality of sensing elements and corresponding header assemblies within one transducer assembly.


Patent Title: Flexible Interconnect Structure for a Sensor Assembly
Patent No.: US 9,518,887
Date of Patent: December 13, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a flexible interconnect structure for a sensor assembly. In one configuration, a flexible interconnect structure may couple a first portion of a differential sensor structure to a second portion of the differential sensor structure. Further, the flexible interconnect structure may couple the differential sensor structure to an external component such as a circuit board, used to receive measurement information from the differential sensor.


Patent Title: Flat Covered Leadless Pressure Sensor Assemblies Suitable for Operation in Extreme Environments
Patent No.: US 9,513,181
Date of Patent: December 6, 2016
Abstract:
This disclosure provides example methods, devices and systems associated with flat covered leadless pressure sensor assemblies suitable for operation in extreme environments. In one embodiment, a system may comprise a semiconductor substrate having a first side and a second side; a diaphragm disposed on the first side of the semiconductor substrate; a first cover couple to the first side of the semiconductor substrate such that it overlays at least the diaphragm; and a sensing element disposed on the second side of the semiconductor substrate, wherein the sensing element is used to measure the pressure.


Patent Title: Pressure Switch with Temperature Enable Function
Patent No.: US 9,508,512
Date of Patent: November 29, 2016
Abstract:
The present invention describes systems and methods of providing a pressure switch with temperature enable function. An exemplary embodiment of the present invention includes a pressure sensor for providing a pressure signal having a first voltage level that is proportional to a pressure applied to the pressure sensor; a temperature sensor for providing a temperature signal having a second voltage level where the second voltage level is proportional to a temperature measured by the pressure sensor; and a control circuit for receiving the pressure signal from the pressure sensor and activating a load when the first voltage level exceeds a threshold voltage level.


Patent Title: Systems and Methods for Improved Dynamic Pressure Measurements
Patent No.: US 9,500,553
Date of Patent: November 22, 2016
Abstract:
A method, device, or system is provided for improving dynamic pressure measurements. In one embodiment, a method compromises receiving, at a filter structure having a restricting tube, an input pressure having a static pressure (PS), a lower-frequency dynamic pressure (PLD) and a higher-frequency dynamic pressure (PHD); filtering, by the restricting tube, the input pressure to substantially pass an output pressure having the static pressure (PS), the lower-frequency dynamic pressure (PLD), and an attenuated higher-frequency dynamic pressure (PHD); and outputting, from the filter structure, the output pressure.


Patent Title: Wireless Interface for a Plurality of Transducers
Patent No.: US 9,470,597
Date of Patent: October 18, 2016
Abstract:
A wireless interface system that interfaces with any one of a plurality of transducers of different types, such as pressure sensors, temperature sensors, and current probes. The transducers employ identical connectors with a common connecting scheme. In this manner, any transducer can be connected to a wireless interface which has the same input connecting scheme. When the wireless interface is connected to the transducer, a rechargeable battery, which is associated with the wireless interface, is activated. The wireless interface then determines the type of transducer being utilized and provides sufficient circuitry as well as determining the requirements of the connected transducer. In this manner, the wireless interface, besides recognizing and determining the type of transducer, can determine the range of the sensor and can provide specific circuitry to be activated to supply power and to read data from the sensor via common output pins.


Patent Title: Tunable Pressure Transducer Assembly
Patent No.: US 9,470,596
Date of Patent: October 18, 2016
Abstract:
A tunable pressure transducer assembly that comprises a sensing element disposed within a housing, wherein the sensing element is adapted to output a signal substantially indicative of an applied pressure, and a filter assembly also disposed within the housing. In one example embodiment, a method includes receiving, at a filter assembly having a tube, a cap and a cavity defined by a housing, a pressure, wherein the cap is positioned to set a predetermined volume of the cavity and the tube is associated with an application of the pressure to the cavity, wherein the pressure includes a static pressure component and a dynamic pressure component; filtering, by the tube and the cavity, at least a portion of the dynamic pressure component of the pressure to obtain a filtered pressure; outputting, from the filter assembly, the filtered pressure; and wherein the filtered pressure is used to determine the static pressure component of the pressure.


Patent Title: Single and Grouped Pressure Valves
Patent No.: US 9,470,325
Date of Patent: October 18, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a single and grouped pressure valve. In one embodiment, a pressure valve may include a housing having a first input port and a plurality of output ports and defining a cavity disposed therein; a flow coupler disposed in the cavity of the housing and having a passage transversely disposed therethrough, wherein the flow coupler is moveable within the cavity of the housing; wherein a first alignment position of the flow coupler in the cavity of the housing allows fluid flow from the first input port of the housing through the passage of the flow coupler to all of the plurality of output ports of the housing; and wherein a second alignment position of the flow coupler in the cavity of the housing allows fluid flow from the first input port of the housing through the passage of the flow coupler to one of the plurality of output ports of the housing.


Patent Title: Structure for Tuning Weld Heat Dissipation
Patent No.: US 9,469,085
Date of Patent: October 18, 2016
Abstract:
Systems and method for controlling the flow and dissipation of thermal energy away from a weld between two components are provided. In one example embodiment, a structure may comprise a protrusion; a second component having a lower heat dissipation rate than the first component; a weld formed using a welding process to couple the protrusion to the second component, wherein the welding process generates thermal energy; and wherein the first component in combination with the protrusion dissipates the thermal energy from the welding process at about an equivalent rate as the second component.


Patent Title: Carbon Nanotube or Graphene based Pressure Switch
Patent No.: US 9,455,105
Date of Patent: September 27, 2016
Abstract:
The present invention describes systems and methods for providing a carbon or grapheme based pressure switch. An exemplary embodiment of the present invention includes a semiconductor substrate; a cavity defined within the semiconductor substrate having a cross-sectional area and a depth; a bottom conductor disposed within the cavity; a conductive membrane disposed above the cavity and adapted to deflect towards the bottom conductor upon an applied pressure; an elastic, insulating layer disposed between the conductive membrane and the bottom conductor; and a switching element adapted to activate upon electrical communication between the conductive membrane and the bottom conductor.


Patent Title: Electronic Interface for LVDT-Type Pressure Transducers using Piezoresistive Sensors
Patent No.: US 9,448,055
Date of Patent: September 20, 2016
Abstract:
Aspects of the present disclosure relate to a method that includes receiving, at first and second input terminals, first and second input voltages and maintaining the direction of the first and second input voltages and doubling the first and second input voltages. The method also includes measuring, by a Wheatstone bridge, an applied physical parameter, outputting, to a capacitor, and to first and second operational amplifiers, first and second signals substantially indicative of the physical parameter; reducing, by the capacitor, a DC component of the first and second signals; amplifying, by the first and second operational amplifiers, the first and second signals; and adjusting, by a gain resistor, a differential output between first and second output voltages that correspond to the first and second signals output from the Wheatstone bridge. Finally, the method includes outputting, first and second output terminals, the first and second output voltage.


Patent Title: Compensating a Sensor having Thermal Gradients
Patent No.: US 9,429,491
Date of Patent: August 30, 2016
Abstract:

Example embodiments of the disclosed technology methods, devices, and systems for compensating a sensor having thermal gradients. In one embodiment, a system is provided that includes a sensor, including a first half-bridge transducer configured to output a first pressure signal associated with a first received pressure; a first set of span resistors coupled to the first half-bridge transducer, and configured generate a first compensated pressure signal; a second half-bridge transducer, configured to output a second pressure signal associated with a second received pressure; and a second set of span resistors coupled to the second half-bridge transducer and configured to generate a second compensated pressure signal. The system includes an output port that is configured to output a signal associated with a difference between the first compensated pressure signal and the second compensated pressure signal.


Patent Title: Pressure Scanner Assemblies having Replaceable Sensor Plates
Patent No.: US 9,372,131
Date of Patent: June 21, 2016
Abstract:
A pressure scanner assembly having at least one replaceable sensor plate, wherein each of the replaceable sensor plates has a least one pressure, sensor adapted to transmit a signal substantially indicative of a sensed pressure condition. A memory chip, which stores correction coefficients for each of the pressure sensor to compensate for thermal errors, may be installed on each of the replaceable sensor plates. The signals from the pressure sensors are multiplexed and may be outputted in analog or digital from. The pressure scanner assemblies described herein have sensor plates that can be inter-changed with other sensor plates of the same or different pressure range without disrupting the electronic configuration of the pressure scanner assembly or having to recalibrate and/or update the memory chip installed thereon.


Patent Title: High Pressure Flat Plate Transducer
Patent No.: US 9,360,389
Date of Patent: June 7, 2016
Abstract:
This disclosure provides example systems and methods for a high pressure, flat plate transducer assembly. A transducer assembly is provided, which includes a transducer, a housing, and a transducer header. The transducer header can include a header front side configured for accepting the transducer and a header back side configured for mating with the housing at an interface between the header back side and the housing. The transducer assembly is configured such that a pressure exerted on the transducer compressed the interface between the header back side and the housing.


Patent Title: Low Pass Filter Semiconductor Structures for use in Transducers for Measuring Low Dynamic Pressures in the Presence of High Static Pressures
Patent No.: US 9,360,385
Date of Patent: June 7, 2016
Abstract:
A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. In one embodiment, a method comprises receiving, at a filter having a plurality of apertures, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; filtering, by the plurality of apertures, at least a portion of the dynamic pressure component of the pressure, wherein a diameter of each of the plurality of apertures is such that the plurality of apertures filters at least the portion of the dynamic pressure component of the pressure; outputting, from the filter, a filtered pressure; and wherein the filtered pressure is used to determine the dynamic pressure component of the pressure.


Patent Title: Self-Heated Pressure Sensor Assemblies
Patent No.: US 9,354,133
Date of Patent: May 31, 2016
Abstract:
The present invention provides a self-heated pressure sensor assembly and method of utilizing the same. The self-heated pressure sensor assembly regulates and maintains the temperature of the pressure sensor, regardless of the external temperature environment, without an external heater as in prior art embodiments. Exemplary embodiments of the pressure sensor assembly incorporate a resistance heater that is built into resistance of the pressure sensing elements to monitor the temperature of the assembly, which works alongside the resistance heater to maintain a stable temperature within the pressure sensor assembly.


Patent Title: Two Dimensional Material-based Pressure Sensor
Patent No.: US 9,347,840
Date of Patent: May 24, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a two dimensional, material-based pressure sensor. A sensor device is provided that includes a substrate having a back electrode, conductive layer in communication with the back electrode, and an insulating layer coupled to the conductive layer. The insulating layer includes one or more cavity regions. A sensor membrane comprising a two-dimensional material is disposed adjacent to the insulating layer and covering at least one of the one or more cavity regions. A first sensing electrode is in electrical communication with a first region of the sensor membrane, and a second sensing electrode is in communication with a second region of the sensor membrane. The sensor membrane is configured to respond to pressure changes exerted on the sensor device.


Patent Title: Pressure Sensor Having a Front Seal
Patent No.: US 9,341,536
Date of Patent: May 17, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a sensor having a front seal. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header, an adaptor coupled to the housing, wherein a first gap separates the adapter and the sensing element and a second gap separates the adapter and the header; and wherein a stress applied at a front surface of the adapter is transferred to the housing, and the first gap is used to isolate the sensing element from the stress and the second gap is used to isolate the header from the stress.


Patent Title: Pressure Belt Comprising Replaceable Sensing Elements
Patent No.: US 9,341,535
Date of Patent: May 17, 2016
Abstract:
A pressure belt comprising a flexible belt, and a flat pack assembly removably attached to the flexible belt, wherein each flat pack assembly comprises at least one sensing element. Further, each flat pack assembly also comprises a memory component associated with the sensing element thereon, wherein the memory component houses data specific to the corresponding sensing element. Unlike prior art structures, each flat pack assembly is individually removable. Therefore, if one sensing element malfunctions, it may be replaced by removing the flat pack assembly comprising the malfunctioning sensing element and swapping it out for a flat pack assembly comprising an operable sensing element. This is an improvement over the prior art as it eliminated the need for replacing and recalibrating the entire pressure belt when one sensing element malfunctions, which can be both time consuming and costly.


Patent Title: Enhanced Static-Dynamic Pressure Transducer Suitable for use in Gas Turbines and other Compressor Applications
Patent No.: US 9,341,534
Date of Patent: May 17, 2016
Abstract:
This disclosure provides example methods, devices, and systems associated with filter structures employed with sensors. In one embodiment, a method comprises receiving, at a first filter having a plurality of pores, a pressure, wherein the pressure includes a static pressure component of the pressure; outputting, from the first filter, a filtered pressure; and wherein the filtered pressure is used to determine the dynamic pressure component.


Patent Title: Sensor co-located With an Electronic Circuit
Patent No.: US 9,322,730
Date of Patent: April 26, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a sensor co-located with an electronic circuit. In one embodiment, a sensor assembly may comprise a semiconductor device configured to include a sensor having a sensing element, an electronic circuit and wherein the sensing element and the electronic circuit are hermetically sealed in the same sensor assembly; and wherein the sensor assembly is capable of outputting an environmental condition signal associated with an environmental condition measured by the sensor.


Patent Title: Torque Insensitive Header Assembly
Patent No.: US 9,316,551
Date of Patent: April 19, 2016
Abstract:
This disclosure provides example methods, devices and systems associated with a torque-insensitive header assembly. In one embodiment, a method comprises receiving, by a sensor, from an aperture defined by a shell, an environmental condition, wherein the sensor is coupled to a header and the header is coupled to the shell such that the sensor is isolated from a torque stress applied to the shell; measuring, by the sensor, the environmental condition to determine an environmental condition signal; and outputting, from the sensor, the environmental condition signal.


Patent Title: Pressure Sensor Having a Helmholtz Resonator
Patent No.: US 9,291,517
Date of Patent: March 22, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a sensor having a Helmholtz resonator. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; an adaptor coupled to the housing; a screen disposed in an opening of the housing, wherein a first cavity is disposed between the screen and the sensing element and a second cavity is disposed between the adaptor and the sensing element, and the screen in combination with the first cavity and the second cavity form a Helmholtz resonator.


Patent Title: Internally Switched Multiple Range Transducers
Patent No.: US 9,291,516
Date of Patent: March 22, 2016
Abstract:
Systems and methods for an internally switched multiple range transducer are provided. In one embodiment, a method comprises receiving, at a first sensor, a pressure, wherein the first sensor is associated with a first pressure range; measuring, at the first sensor, the pressure to generate a first pressure signal; in response to determining that the first pressure signal is not associated with the first pressure range, activating a second sensor, wherein the second sensor is associated with a second pressure range that is different from the first pressure range; and measuring, at the second sensor, the pressure to generate a second pressure signal.


Patent Title: Flexible Interconnect Structure for a Sensor Assembly
Patent No.: US 9,265,142
Date of Patent: February 16, 2016
Abstract:
This disclosure provides example methods, devices, and systems for a flexible interconnect structure for a sensor assembly. In one configuration, a flexible interconnect structure may couple a first portion of a differential sensor structure to a second portion of the differential sensor structure. Further, the flexible interconnect structure may couple the differential sensor structure to an external component such as a circuit board, used to receive measurement information from the differential sensor.


Patent Title: Pressure Transducer Utilizing Non-lead Containing Frit
Patent No.: US 9,250,145
Date of Patent: February 2, 2016
Abstract:
A piezoresistive sensor device and a method for making a piezoresistive device are disclosed. In one example, a method may comprise receiving, by a sensor device having a contact, a pressure; measuring, by the sensor device, the pressure to generate a pressure signal; outputting, by the sensor device, to the contact, the pressure signal; and receiving, by a header pin, from the contact, the pressure signal, wherein the header pin and the contact are electrically coupled using a conductive, non-lead containing frit and are aligned using a contact cover that is coupled to the sensor device using a non-conductive, non-lead containing frit.


Patent Title: Thread Tensioning Member In Welded Header Structure
Patent No.: US 9,205,511
Date of Patent: December 8, 2015
Abstract:
An improved header assembly and corresponding port assembly comprising a tensioning member, wherein the tensioning member is isolated and separate from the weld portion and is adapted to place a threaded portion between the header assembly and port assembly in tension and maintain such tension, and thus relieve tension from the weld, before and after welding, thereby increasing the lifespan of the header and port assemblies.


Patent Title: Measurement Of Fluid Temperatures
Patent No.: US 9,188,494
Date of Patent: November 17, 2015
Abstract:
A method, device, and system for improved measurement of fluid temperatures are provided. In one embodiment, a temperature probe structure comprises a header having a cavity; a longitudinal probe disposed at least partially within the cavity of the header; a temperature detector disposed within the longitudinal probe; and an insulator disposed between the header and the longitudinal probe for insulating the longitudinal probe from the header.


Patent Title: Leadless Oil Filled Pressure Transducer
Patent No.: US 9,182,308
Date of Patent: November 10, 2015
Abstract:
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 protruding top surface, and a diaphragm disposed on the protruding top surface to create a relatively small oil accommodating region between the diaphragm and the sensor. This configuration reduces the oil volume required for operation, which ultimately reduces the back pressure applied against the diaphragm.


Patent Title: Pressure Switch with Temperature Enable Function
Patent No.: US 9,176,019
Date of Patent: November 3, 2015
Abstract:
The present invention describes systems and methods of providing a pressure switch with temperature enable function. An exemplary embodiment of the present invention includes a pressure sensor for providing a pressure signal having a first voltage level that is proportional to a pressure applied to the pressure sensor; a temperature sensor for providing a temperature signal having a second voltage level where the second voltage level is proportional to a temperature measured by the pressure sensor; and a control circuit for receiving the pressure signal from the pressure sensor and the temperature signal from the temperature sensor and activating a load when the first voltage level exceeds a threshold voltage level.


Patent Title: Electronic Interface For LVDT-Type Pressure Transducers Using Piezoresistive Sensor
Patent No.: US 9,157,822
Date of Patent: October 13, 2015
Abstract:
A transformer-less, solid-state pressure transducer assembly having significantly better characteristics than the electro-mechanical assemblies of the prior art. The pressure transducer assembly of the present invention achieves the many of the same functions as transducer assemblies of the prior art having transformers, however the pressure transducer assembly of the present invention is smaller in size and weight, cost less to manufacture, and has increased reliability.


Patent Title: High Temperature, High Bandwidth Pressure Acquisition System
Patent No.: US 9,127,993
Date of Patent: September 8, 2015
Abstract:
A method, device and system are provided for measuring multiple pressures under severe conditions. In one embodiment, a method comprises receiving, by a processor, from a first sensor, a first pressure signal; receiving, by the processor, from a second sensor, a second pressure signal; receiving, by the processor, from a first memory, a first correction coefficient for the first sensor; receiving, by the processor, from a second memory, a second correction coefficient for the second sensor; modifying, by the processor, the first pressure signal using the first correction coefficient to generate a first corrected pressure signal; modifying, by the processor, the second pressure signal using the second correction coefficient to generate a second corrected pressure signal; and outputting, by the processor, the first corrected pressure signal and the second corrected pressure signal.


Patent Title: Building Block Transducer Assembly
Patent No.: US 9,116,056
Date of Patent: August 25, 2015
Abstract:
A transducer assembly configured to accommodate a plurality of individually tunable sensing elements of various geometries and configurations by using a cap and an accompanying capillary tube. The configuration of the various embodiments described herein eliminate the header to flat plate welds of the prior art, and therefore better accommodates a plurality of sensing elements and corresponding header assemblies within one transducer assembly.


Patent Title: High Temperature Transducer Using SOI, Silicon Carbide Or Gallium Nitride Electronics
Patent No.: US 9,105,752
Date of Patent: August 11, 2015
Abstract:
There is disclosed a high temperature pressure sensing system which includes a SOI, silicon carbide, or gallium nitride Wheatstone bridge including piezoresistors. The bridge provides an output which is applied to an analog to digital converter also fabricated using SOI, silicon carbide, or gallium nitride materials. The output of the analog to digital converter is applied to microprocessor, which microprocessor processes the data or output of the bridge to produce a digital output indicative of bridge value. The microprocessor also receives an output from another analog to digital converter indicative of the temperature of the bridge as monitored by a span resistor coupled to the bridge. The microprocessor has a separate memory coupled thereto which is also fabricated from SOI, silicon carbide, or gallium nitride materials and which memory stores various data indicative of the microprocessor also enabling the microprocessor test and system test to be performed.


Patent Title: Combination Static and Dynamic Pressure Transducer Employing a Micro-Filter
Patent No.: US 9,080,927
Date of Patent: July 14, 2015
Abstract:
A pressure transducer assembly that uses static pressure compensation to capture low-level dynamic pressures in high temperature environments. In one embodiment, a method comprises receiving, at a first tube, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; receiving, at a micro-filter, the pressure; filtering, by the micro-filter, at least a portion of the dynamic pressure component of the pressure; outputting, from the micro-filter, a filtered pressure; receiving, at a first surface of a first sensing element, the pressure; receiving, at a second surface of the first sensing element, the filtered pressure; measuring, by the first sensing element, a difference between the pressure and the filtered pressure, wherein the difference is associated with the dynamic pressure component of the pressure; and outputting, from the first sensing element, a first pressure signal associated with the dynamic pressure component of the pressure


Patent Title: Gage Pressure Transducer and Method for Making the Same
Patent No.: US 9,063,027
Date of Patent: June 23, 2015
Abstract:
A method, device and system for a gage pressure transducer including the making thereof are provided. In one embodiment, a method comprises receiving, at a first diaphragm, a first pressure, wherein the first diaphragm is composed of metal; transferring, from the first diaphragm, to a first sensor, the first pressure using a first oil region, wherein the first oil region is disposed between the first diaphragm and the first sensor; receiving, at the first sensor, the first pressure; measuring, by the first sensor, the first pressure to generate a first pressure signal; and outputting, from the first sensor, to a first header pin, the first pressure signal, wherein the first header pin is electrically coupled to the first sensor using a first conductive glass frit.


Patent Title: Pressure Transducer Utilizing Non-Lead Containing Frit
Patent No.: US 8,988,184
Date of Patent: March 24, 2015
Abstract:
A piezoresistive sensor device and a method for making a piezoresistive device are disclosed. The sensor device comprises a silicon wafer having piezoresistive elements and contacts in electrical communication with the elements. The sensor device further comprises a contact glass coupled to the silicon wafer and having apertures aligned with the contacts. The sensor device also comprises a non-conductive frit for mounting the contact glass to a header glass, and a conductive non-lead glass frit disposed in the apertures and in electrical communication with the contacts. The method for making a piezoresistive sensor device, comprises bonding a contact glass to a silicon wafer such that apertures in the glass line up with contacts on the wafer, and filling the apertures with a non-lead glass frit such that the frit is in electrical communication with the contacts. The use of a lead free glass frit prevents catastrophic failure of the piezoresistive sensor and associated transducer in ultra high temperature applications.


Patent Title: Self-Heated Pressure Sensor Assemblies
Patent No.: US 8,984,951
Date of Patent: March 24, 2015
Abstract:
The present invention provides a self-heated pressure sensor assembly and method of utilizing the same. The self-heated pressure sensor assembly regulates and maintains the temperature of the pressure sensor, regardless of the external temperature environment, without an external heater as in prior art embodiments. Exemplary embodiments of the pressure sensor assembly incorporate a resistance heater that is built into the sensing chip of the pressure sensor assembly. The pressure sensor assembly also utilizes the resistance of the pressure sensing elements to monitor the temperature of the assembly, which works alongside the resistance heater to maintain a stable temperature within the pressure sensor assembly.


Patent Title: Leadless Oil Filled Pressure Transducer
Patent No.: US 8,978,235
Date of Patent: March 17, 2015
Abstract:
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 protruding top surface, and a diaphragm disposed on the protruding top surface to create a relatively small oil accommodating region between the diaphragm and the sensor. This configuration reduces the oil volume required for operation, which ultimately reduces the back pressure applied against the diaphragm.


Patent Title: Shunt Calibration For Electronic Pressure Switches
Patent No.: US 8,975,898
Date of Patent: March 10, 2015
Abstract:
Disclosed herein is an electronic switch that comprises a pressure sensitive bridge array adapted to monitor pressure and activate an indicator when the monitored pressure exceeds a predetermined value indicative of a dangerous condition. The electronic switch further comprises a monitoring circuit adapted to test the overall operability of the pressure sensitive bridge array and its accompanying electronics control circuitry.