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Espasa
Cesar Fernandez Espasa, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120025845 | SHORT CIRCUIT DETECTION IN AN INKJET PRINTHEAD - A short detection apparatus, system and method detect short circuits in an inkjet printhead using a comparison of measured current consumption and an estimate of current consumption based on print data. The apparatus includes a current sensor to measure current consumed by the printhead to eject a droplet of ink, a current estimator to estimate a current consumption of the printhead due to print data provided to the printhead, and a comparator to compare the measured consumed current to the estimated consumed current. A short circuit in the printhead is indicated when the comparison exceeds a predetermined threshold. | 02-02-2012 |
Olivier Espasa, Morristown, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20110014039 | TURBINE WITH AXIAL DISCONTINUITY - A turbocharger turbine containing a separate insert affixed within the housing. The insert is of a stamped metal configuration, and forms at least a portion of inlet passageway outer wall. An axial discontinuity is machined into the inlet passageway outer wall, the axial discontinuity being characterized by a size and location to direct airflow away from the blade-gap zone over at least part of the range of flow conditions. The inlet passageway may be either larger or smaller upstream of the axial discontinuity. | 01-20-2011 |
| 20110171009 | Variable-Vane Assembly Having Unison Ring Guided Radially By Rollers and Fixed Members, and Restrained Axially by One or More Fixed Axial Stops - A variable-vane assembly for a variable nozzle turbine comprises a nozzle ring supporting a plurality of vanes affixed to vane arms that are engaged in recesses in the inner edge of a unison ring. The unison ring is rotatable about the axis of the nozzle ring so as to pivot the vane arms, thereby pivoting the vanes in unison. The unison ring is radially restrained by a combination of radial guide rollers and fixed axial-radial guide pins secured to the nozzle ring, and is axially restrained by one or more axial stops affixed to the nozzle ring. | 07-14-2011 |
Olivier Espasa, Dogneville FR
| Patent application number | Description | Published |
|---|---|---|
| 20080240906 | VARIABLE-VANE ASSEMBLY HAVING FIXED AXIAL-RADIAL GUIDES AND FIXED RADIAL-ONLY GUIDES FOR UNISON RING - A variable-vane assembly for a variable nozzle turbine comprises a nozzle ring supporting a plurality of vanes affixed to vane arms that are engaged in recesses in the inner edge of a unison ring. The unison ring is rotatable about the axis of the nozzle ring so as to pivot the vane arms, thereby pivoting the vanes in unison. A plurality of radial-axial guide pins for the unison ring are inserted into apertures in the nozzle ring and are rigidly affixed therein such that the radial-axial guide pins are non-rotatably secured to the nozzle ring with a guide portion of each radial-axial guide pin projecting axially from the face of the nozzle ring. Each guide portion defines a groove for receiving the inner edge of the unison ring such that the unison ring is restrained by the radial-axial guide pins against excessive movement in both radial and axial directions. | 10-02-2008 |
| 20100260597 | VARIABLE-VANE ASSEMBLY HAVING FIXED GUIDE PINS FOR UNISON RING - A variable-vane assembly for a variable nozzle turbine comprises a nozzle ring supporting a plurality of vanes affixed to vane arms that are engaged in recesses in the inner edge of a unison ring. The unison ring is rotatable about the axis of the nozzle ring so as to pivot the vane arms, thereby pivoting the vanes in unison. A plurality of guide pins for the unison ring are inserted into apertures in the nozzle ring and are rigidly affixed therein such that the guide pins are non-rotatably secured to the nozzle ring with a guide portion of each guide pin projecting axially from the face of the nozzle ring. Each guide portion defines a shoulder radially overlapping the inner edge of the unison ring such that the unison ring is restrained by the guide pins against excessive movement in both radial and axial directions. | 10-14-2010 |
Olivier Espasa, Dogenville FR
| Patent application number | Description | Published |
|---|---|---|
| 20090214330 | VARIABLE-NOZZLE ASSEMBLY FOR A TURBOCHARGER - A variable-nozzle assembly comprises a nozzle ring and an array of vanes circumferentially spaced about the nozzle ring and rotatably mounted to the nozzle ring such that the vanes are variable in setting angle, and an insert having a tubular portion and an annular nozzle portion extending generally radially out from one end of the tubular portion. A plurality of axially extending holes extend through a thickness of the nozzle portion. A plurality of spacers have first ends joined to the nozzle ring, opposite second ends of the spacers being engaged in the holes and secured to the nozzle portion by welds formed at the second surface. An annular groove is defined in the second surface of the nozzle portion radially inward of and proximate to the holes. Alternatively or additionally, discrete recesses are formed in the second surface adjacent the holes. The groove and/or recesses facilitate weld penetration. | 08-27-2009 |
Olivier Espasa, Morrsitown, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20110138805 | CONJUGATE CURVE PROFILES FOR VANE ARMS, MAIN-ARMS, AND UNISON RINGS - A turbocharger assembly comprises a variable-vane assembly. The variable-vane assembly includes a unison ring with vane arms and/or a main-arm which adjust the setting angle of vanes. Vane arm-engaging elements and main-arm-engaging elements in the unison ring engage ends of the vane arms and the main-arm, respectively. Each vane arm-engaging element comprises an inner contact surface that engages an outer contact surface of the respective vane arm. The main-arm-engaging element comprises an inner actuation surface that engages an outer actuation surface of the main-arm. The inner contact surface and the outer contact surface and/or the inner actuation surface and the outer actuation surface may comprise conjugate curve profiles, such as involute curve profiles based on the involute of a circle. Use of conjugate curve profiles may result in rolling movement between the unison ring and vane arms and/or main arm, which may reduce friction occurring during pivoting of the vanes. | 06-16-2011 |
Roger Espasa, Barcelona ES
| Patent application number | Description | Published |
|---|---|---|
| 20090172344 | METHOD, SYSTEM, AND APPARATUS FOR PAGE SIZING EXTENSION - A method, system, and apparatus may initialize a fixed plurality of page table entries for a fixed plurality of pages in memory, each page having a first size, wherein a linear address for each page table entry corresponds to a physical address and the fixed plurality of pages are aligned. A bit in each of the page table entries for the aligned pages may be set to indicate whether or not the fixed plurality of pages is to be treated as one combined page having a second page size larger than the first page size. Other embodiments are described and claimed. | 07-02-2009 |
| 20100042779 | Implementing Vector Memory Operations - In one embodiment, the present invention includes an apparatus having a register file to store vector data, an address generator coupled to the register file to generate addresses for a vector memory operation, and a controller to generate an output slice from one or more slices each including multiple addresses, where the output slice includes addresses each corresponding to a separately addressable portion of a memory. Other embodiments are described and claimed. | 02-18-2010 |
| 20100332801 | Adaptively Handling Remote Atomic Execution - In one embodiment, a method includes receiving an instruction for decoding in a processor core and dynamically handling the instruction with one of multiple behaviors based on whether contention is predicted. If no contention is predicted, the instruction is executed in the core, and if contention is predicted data associated with the instruction is marshaled and sent to a selected remote agent for execution. Other embodiments are described and claimed. | 12-30-2010 |