Patent application number | Description | Published |
20130058756 | FLOW DISCOURAGER INTEGRATED TURBINE INTER-STAGE U-RING - A gas turbine having rotor discs ( | 03-07-2013 |
20130111919 | GAS TURBINE ENGINE WITH STRUCTURE FOR DIRECTING COMPRESSED AIR ON A BLADE RING - The present invention comprises a gas turbine engine and a process for operating a gas turbine engine. A fluid structure receives compressed air from a compressor and extends toward a stationary blade ring in a turbine to discharge the compressed air directly against a surface of the blade ring such that the compressed air impinges on the blade ring surface. The compressed air then passes through at least one opening in the stationary blade ring and into cooling passages of a corresponding row of vanes. | 05-09-2013 |
20140119880 | TEMPERATURE CONTROL WITHIN A CAVITY OF A TURBINE ENGINE - A turbine engine including an intermediate space defined between outer and inner portions of the turbine engine. A flow energizer is provided including a flow body located within the intermediate space and including an inlet port, an outlet port and a flow passage extending within the flow body between the inlet and outlet ports. The inlet port receives a flow of a first medium located within the intermediate space and the flow body injects an energizing flow of a second medium to a portion of the first medium within the flow body to create an energized flow of a mixed medium from the outlet portion, the energized flow of mixed medium creates a flow of the first medium adjacent to the flow body within the intermediate space. | 05-01-2014 |
20140123657 | EXTERNAL COOLING FLUID INJECTION SYSTEM IN A GAS TURBINE ENGINE - A cooling fluid air injection system for use in a gas turbine engine includes at an external cooling fluid source, at least one rotor cooling pipe, which is used to inject cooling fluid from the source into a rotor chamber, a piping system that provides fluid communication between the source and the rotor cooling pipe(s), a blower system for conveying the cooling fluid through the piping system and the rotor cooling pipe(s) into the rotor chamber, and a valve system. The valve system is closed during full load engine operation to prevent cooling fluid from the source from passing through the piping system, and open during less than full load engine operation to allow cooling fluid from the source to pass through the piping system. | 05-08-2014 |
20140301820 | TURBINE ENGINE SHUTDOWN TEMPERATURE CONTROL SYSTEM WITH NOZZLE INJECTION FOR A GAS TURBINE ENGINE - A turbine engine shutdown temperature control system configured to limit thermal gradients from being created within an outer casing surrounding a turbine blade assembly during shutdown of a gas turbine engine is disclosed. By reducing thermal gradients caused by hot air buoyancy within the mid-region cavities in the outer casing, arched and sway-back bending of the outer casing is prevented, thereby reducing the likelihood of blade tip rub, and potential blade damage, during a warm restart of the gas turbine engine. The turbine engine shutdown temperature control system may operate during the shutdown process where the rotor is still powered by combustion gases or during turning gear system operation after shutdown of the gas turbine engine, or both, to allow the outer casing to uniformly, from top to bottom, cool down. | 10-09-2014 |
20150090017 | TURBINE BLADE-MOUNTED SENSOR FIXTURE FOR TIP GAP MEASUREMENT - Turbine blade tip clearance is measured in a fully assembled turbine casing by mounting a non-contact displacement probe or sensor on a turbine blade that generates data indicative of sensor distance from the turbine casing that circumferentially surrounds the blade. The sensor is mounted on the blade with a sensor fixture, which includes a clamping mechanism and a sensor retention mechanism that retains and calibrates the sensor by selective movement of the sensor relative to the retention mechanism. Variations in sensor distance data are recorded when the turbine is operated in turning gear mode. Blade rotational position data are collected by a rotational position sensor. A data processing system correlates the distance and rotational position data with localized blade tip gap at angular positions about the turbine casing circumference. This method and apparatus facilitate assessment of turbine casing deformation impact on blade tip clearance and rotor/casing alignment. | 04-02-2015 |
Patent application number | Description | Published |
20100079725 | Lens Design Simplification Process - A method for producing lenses with at least one simple surface that is optically equivalent to a lens having two complex surfaces. | 04-01-2010 |
20100195044 | MYOPIA CONTROL OPHTHALMIC LENSES - Lenses are designed using wavefront measurements amenable to correction factors for near and far vision as well as pupil size to slow or stop myopia progression. | 08-05-2010 |
20100328604 | MYOPIA CONTROL OPHTHALMIC LENSES - Lenses are designed using the corneal topography or wavefront measurements of the eye derived by subtracting the optical power of the eye after orthokeratology treatment from the optical power before orthokeratology treatment. | 12-30-2010 |
20120075579 | TRANSLATING PRESBYOPIC CONTACT LENS - Lenses for correcting presbyopia are translating, multifocal contact lenses with pseudotruncations which are asymmetric about the vertical meridian. | 03-29-2012 |
20120075580 | TRANSLATING PRESBYOPIC CONTACT LENS - Lenses for correcting presbyopia are translating, multifocal contact lenses with pseudotruncations which are asymmetric about the vertical meridian. | 03-29-2012 |
20120075581 | TRANSLATING PRESBYOPIC CONTACT LENS - Lenses for correcting presbyopia are translating, multifocal contact lenses with pseudotruncations which are asymmetric about the vertical meridian. | 03-29-2012 |
20140211147 | ASYMMETRIC LENS DESIGN AND METHOD FOR PREVENTING AND/OR SLOWING MYOPIA PROGRESSION - Contact lenses incorporating asymmetric radial power profiles that increase the radial dioptric power from the center to the margin of the optical zone of the lenses may be utilized to prevent and/or slow myopia progression. The power profiles vary along different meridians. | 07-31-2014 |
20140320800 | DESIGN OF MYOPIA CONTROL OPHTHALMIC LENSES - Lenses are designed using the corneal topography or wavefront measurements of the eye derived by subtracting the optical power of the eye after orthokeratology treatment from the optical power before orthokeratology treatment. | 10-30-2014 |
20150124213 | DESIGN OF MYOPIA CONTROL OPHTHALMIC LENSES - Lenses are designed using wavefront measurements amenable to correction factors for near and far vision as well as pupil size to slow or stop myopia progression. | 05-07-2015 |