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Eslinger, US
Daniel J. Eslinger, Redondo Beach, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110187598 | METHOD AND SYSTEM FOR ESTIMATING POSITION USING DUAL REAL TIME KINEMATIC ENGINES - A method and system for estimating the position comprises measuring a first carrier phase of a first carrier signal and a second carrier phase of a second carrier signal received by a location-determining receiver. A primary real time kinematic (RTK) engine or receiver data processing system estimates a primary integer ambiguity set associated with at least one of the measured first carrier phase and the measured second carrier phase. A quality evaluator determines if a primary integer ambiguity set is resolved correctly to the predefined reliability rate during an earlier evaluation period. A secondary real time kinematic (RTK) engine or receiver data processing system estimates a secondary integer ambiguity set associated with at least one of the measured first carrier phase and the measured second carrier phase during a later period following the earlier evaluation period. | 08-04-2011 |
Daniel J. Eslinger, Huntington Beach, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080297408 | Partial search carrier-phase integer ambiguity resolution - A method for performing integer ambiguity resolution in a global navigation satellite system is disclosed. A set of ambiguities, which are associated with carrier phase measurements of at least some of the signals received from the satellites in an identified set of satellites, are identified. Integer ambiguities are estimated and a best candidate set and a second best candidate set of integer ambiguity values are determined. Upon determining that the best set of integer ambiguity values fail to meet a discrimination test, each ambiguity for which integer ambiguity values in the best candidate set and second best candidate set fail to meet predefined criteria are removed from the set of ambiguities to produce a reduced set of ambiguities. The integer ambiguities in the reduced set of ambiguities are then resolved and an output is generated in accordance with the resolved integer ambiguities. | 12-04-2008 |
| 20090102708 | Navigation Receiver and Method for Combined Use of a Standard RTK System and a Global Carrier-Phase Differential Positioning System - A mobile satellite navigation receiver for calculating an offset between a local positioning system and a wide-area satellite positioning system is presented. The mobile satellite navigation receiver determines a first solution of a position of the mobile satellite navigation receiver relative to a first local positioning system, wherein the first local positioning system includes one or more reference receivers at known locations. The mobile satellite navigation receiver determines a second solution of the position of the satellite navigation receiver relative to a wide-area differential satellite positioning system. The mobile satellite navigation receiver then calculates an offset between the first solution and the second solution. | 04-23-2009 |
| 20090135056 | Distance dependant error mitigation in real-time kinematic (RTK) positioning - A method for mitigating atmospheric errors in code and carrier phase measurements based on signals received from a plurality of satellites in a global navigation satellite system is disclosed. A residual tropospheric delay and a plurality of residual ionospheric delays are modeled as states in a Kalman filter. The state update functions of the Kalman filter include at least one baseline distance dependant factor, wherein the baseline distance is the distance between a reference receiver and a mobile receiver. A plurality of ambiguity values are modeled as states in the Kalman filter. The state update function of the Kalman filter for the ambiguity states includes a dynamic noise factor. An estimated position of mobile receiver is updated in accordance with the residual tropospheric delay, the plurality of residual ionospheric delays and/or the plurality of ambiguity values. | 05-28-2009 |
| 20100141510 | METHODS AND SYSTEMS TO INCREASE ACCURACY IN THE NAVIGATION OF SINGLE FREQUENCY RECEIVERS - In a method of mitigating errors in satellite navigation measurements at a satellite navigation receiver, respective single-frequency signals are received from respective satellites in a plurality of satellites in a satellite navigation system. Pseudorange and carrier-phase measurements corresponding to respective received single-frequency signals are calculated. These calculations include filtering the pseudorange and carrier-phase measurements in a Kalman filter having a state vector comprising a plurality of states, including a position state, a receiver clock state, and a plurality of bias states. Each bias state corresponds to a respective satellite in the plurality of satellites. The filtering includes updating the state vector. An estimated position of the satellite navigation receiver is updated in accordance with an update to the state vector. | 06-10-2010 |
David Eslinger, Collinsville, OK US
| Patent application number | Description | Published |
|---|---|---|
| 20080199300 | MEANS TO REDUCE SECONDARY FLOW IN A CENTRIFUGAL PUMP - A technique improves the pumping performance of a centrifugal pump in a cost-effective manner. The centrifugal pump comprises a pumping component having one or more vanes defining fluid flow paths. A passage is formed through at least one vane such that an end of the passage is exposed to a low energy flow, i.e. secondary flow, region. Each passage enables the flow of a small amount of fluid from the low energy region to an opposite side of the vane to reduce the secondary flow effects and improve pumping efficiency. | 08-21-2008 |
| 20090065197 | ENHANCING WELL FLUID RECOVERY - A technique that is usable with a well includes communicating fluid downhole in the well. The technique includes enhancing fluid recovery from a reservoir by, downhole in the well, controlling the pumping of the fluid to create a pressure wave which propagates into the reservoir. | 03-12-2009 |
| 20090092478 | SYSTEM AND METHOD FOR IMPROVING FLOW IN PUMPING SYSTEMS - A technique is provided for improving the efficiency of a centrifugal pump. The centrifugal pump comprises diffusers that optimize the area schedule through the diffuser to diffuse the total fluid velocity and recover dynamic head while minimizing flow separation. Each diffuser comprises an improved transition from the diffuser blade into the diffuser discharge duct to remove abrupt changes in area and to reduce fluid separation. The impellers also can be constructed with impeller transitions able to reduce fluid separation and improve the efficiency of the pump. | 04-09-2009 |
David M. Eslinger, Collinsville, OK US
| Patent application number | Description | Published |
|---|---|---|
| 20100040492 | SYSTEM AND METHOD FOR REDUCING THRUST ACTING ON SUBMERSIBLE PUMPING COMPONENTS - A technique is provided to facilitate pumping of fluids in a well environment. A submersible pumping system having a submersible pump incorporates features that manage thrust loads resulting from rotating impellers. The thrust reducing features cooperate with the action of the impellers in one or more pump stages to reduce forces otherwise acting on certain pump related components. | 02-18-2010 |
David Milton Eslinger, Collinsville, OK US
| Patent application number | Description | Published |
|---|---|---|
| 20080264640 | WELL TREATMENT USING ELECTRIC SUBMERSIBLE PUMPING SYSTEM - A technique provides an electric submersible pumping system to facilitate a well treatment, such as a hydraulic fracturing well treatment. The electric submersible pumping system is positioned downhole and oriented to intake a fluid delivered downhole for use in the well treatment. Once the fluid is delivered downhole, the electric submersible pumping system pumps, pressurizes and discharges this fluid to perform the well treatment, e.g. the hydraulic fracturing treatment. The pumping system reduces the pressure at which the treatment fluid must be delivered downhole. | 10-30-2008 |
Delano R. Eslinger, Smithville, MO US
| Patent application number | Description | Published |
|---|---|---|
| 20100041820 | Resin and Paint Coating Compositions Comprising Highly Esterified Polyol Polyesters with Two or More Pairs of Conjugated Double Bonds - An alkyd resin comprising A) a polyol-polyacid alkyd; and B) a composition comprising a highly esterified polyol polyester wherein the polyester comprises a polyol residue and a plurality of fatty acids esters, and wherein from about 2% to about 55% of the fatty acid esters contains two or more pairs of conjugated double bonds. | 02-18-2010 |
| 20100041821 | Resin and Paint Coating Compositions Comprising Highly Esterified Polyol Polyesters with One Pair of Conjugated Double Bonds - An alkyd resin comprising A) a polyol-polyacid alkyd; and B) a composition comprising a highly esterified polyol polyester, wherein the polyester comprises a polyol residue and a plurality of fatty acids esters, and wherein from about 5% to about 80% of the fatty acid esters contains exactly one pair of conjugated double bonds. | 02-18-2010 |
Steven Wayne Eslinger, Cottleville, MO US
| Patent application number | Description | Published |
|---|---|---|
| 20090312897 | AIRCRAFT MAINTENANCE ANALYSIS TOOL - A method is provided for identifying events that impact aircraft availability. Operational data, maintenance data, supply data, and provisioning data are collected for a plurality of aircraft from a plurality of sources to form collected data. The collected data is processed to form processed data containing a plurality of events, wherein the processed data is in a form needed to perform an analysis on the aircraft availability for the plurality of aircraft. A set of metrics relating to the aircraft availability for the plurality of aircraft is calculated from the processed data to form a set of calculated metrics. A set of trends relating to the set of calculated metrics affecting availability of the plurality of aircraft is identified. | 12-17-2009 |