Patent application number | Description | Published |
20080271974 | Passenger Conveyor Handrail and Method of Manufacture - A passenger conveyor ( | 11-06-2008 |
20080302632 | Passenger Conveyor Handrail Sliding Layer Treatment - A passenger conveyor handrail ( | 12-11-2008 |
20090008217 | POSITIVE LINEAR HANDRAIL DRIVE WITH TOOTHED BELT - A passenger conveyor handrail ( | 01-08-2009 |
20090028714 | METHOD OF DESIGNING TOOL AND TOOL PATH FOR FORMING A ROTOR BLADE INCLUDING AN AIRFOIL PORTION - A method of designing a tool for forming a rotor blade including an airfoil portion includes generating a computer model of a rotor blade having an airfoil portion, and determining a curvature and radius of curvature at sections of the rotor blade. An inner and outer diameter of a circumferential forming portion of a tool operable to form the rotor blade may then be calculated. A method of designing a tool path for forming a rotor blade including an airfoil portion includes generating a computer model of a cylindrical tool operable to form a rotor blade including an airfoil portion and of a rotor having a plurality of the rotor blades. The computer models of the rotor and tool are used to generate a first and second tool motion corresponding to airfoil suction and pressure portions. A method of forming a rotor with integral blades is also disclosed. | 01-29-2009 |
20090126296 | JOINT CONFIGURATION FOR A LOAD BEARING ASSEMBLY - A load bearing assembly ( | 05-21-2009 |
20090127067 | PASSENGER CONVEYOR HANDRAIL WITH A UNIQUE SLIDING LAYER - A passenger conveyor handrail ( | 05-21-2009 |
20090214351 | METHOD OF GENERATING A CURVED BLADE RETENTION SLOT IN A TURBINE DISK - A method of forming a curved slot in a turbine disk includes the steps of forming a pre-slot in the turbine disk and finishing the pre-slot to form a slot that receives a portion of a turbine blade. The turbine disk including a first face, an opposing second face, and an outer perimeter surface extending between the first face and the opposing second face. The pre-slot includes a first curved wall and a second curved wall that each extend between the first face and the opposing second face. An intersection between the outer perimeter surface and each of the first curved wall and the second curved wall is defined by a curved line. | 08-27-2009 |
20100031790 | CONTROL OF WHITE-ETCHED LAYER DURING MACHINING - A machining system includes a support configured to retain an article, such as a rotor disk, having an area, such as a surface of a slot in the disk. A cutting tool, for example, a broach, is movable relative to the support to cut the area. A heating member, such as a laser, is configured to locally heat the area of the article. In one example, the cutting tool includes a body having a cutting edge. The heating member is supported by the body and is configured to provide heat adjacent to the cutting edge. The cutting edge cuts the locally heated area while the area is still heated. | 02-11-2010 |
20100042244 | METHOD OF DESIGNING TOOL AND TOOL PATH FOR FORMING A ROTOR BLADE INCLUDING AN AIRFOIL PORTION - A method of designing a tool for forming a rotor blade including an airfoil portion includes generating a computer model of a rotor blade having an airfoil portion, and determining a curvature and radius of curvature at sections of the rotor blade. An inner and outer diameter of a circumferential forming portion of a tool operable to form the rotor blade may then be calculated. A method of designing a tool path for forming a rotor blade including an airfoil portion includes generating a computer model of a cylindrical tool operable to form a rotor blade including an airfoil portion and of a rotor having a plurality of the rotor blades. The computer models of the rotor and tool are used to generate a first and second tool motion corresponding to airfoil suction and pressure portions. A method of forming a rotor with integral blades is also disclosed. | 02-18-2010 |
20100115740 | PASSENGER CONVEYOR HANDRAIL SPLICING TECHNIQUE - Making a passenger handrail ( | 05-13-2010 |
20100117263 | MODULAR HANDRAIL CONSTRUCTION FOR A PASSENGER CONVEYOR HANDRAIL - A method of making a passenger conveyor handrail includes forming a drive member having a plurality of longitudinally spaced drive surfaces. The drive member has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. The drive member is inserted into a molding device. A gripping surface portion of the handrail is formed using the molding device such that the gripping surface portion and the drive member are secured together. Another method includes forming a belt drive member having a plurality of teeth that establish a plurality of longitudinally spaced drive surfaces. The belt has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. Each of the teeth extends across an entire width of the belt. The belt is secured to a gripping surface portion of the handrail. | 05-13-2010 |
20100218657 | CONTROL OF WHITE-ETCHED LAYER DURING MACHINING - A machining system includes a support configured to retain an article, such as a rotor disk, having an area, such as a surface of a slot in the disk. A cutting tool, for example, a broach, is movable relative to the support to cut the area. A heating member, such as a laser, is configured to locally heat the area of the article. In one example, the cutting tool includes a body having a cutting edge. The heating member is supported by the body and is configured to provide heat adjacent to the cutting edge. The cutting edge cuts the locally heated area while the area is still heated. | 09-02-2010 |
20100221083 | CONTROL OF WHITE-ETCHED LAYER DURING MACHINING - A machining system includes a support configured to retain an article, such as a rotor disk, having an area, such as a surface of a slot in the disk. A cutting tool, for example, a broach, is movable relative to the support to cut the area. A heating member, such as a laser, is configured to locally heat the area of the article. In one example, the cutting tool includes a body having a cutting edge. The heating member is supported by the body and is configured to provide heat adjacent to the cutting edge. The cutting edge cuts the locally heated area while the area is still heated. | 09-02-2010 |
20110083937 | PASSENGER CONVEYOR HANDRAIL DRIVE - A passenger conveyor ( | 04-14-2011 |
20120099972 | ROUGH DENSE CERAMIC SEALING SURFACE IN TURBOMACHINES - An abrasive coating is formed on a rotor shaft that rotates with respect to cantilevered vanes. The coating is formed by thermal spray techniques and comprises a ceramic layer on a metal bond coat. The coating surface is roughened by crush grinding or by grit blasting to increase the abradability of the surface. | 04-26-2012 |
20120099985 | ABRASIVE CUTTER FORMED BY THERMAL SPRAY AND POST TREATMENT - A seal for a gas turbine engine component having an airfoil with a radial outward end and a radial inward end, one of which is bare metal. A seal member is adjacent to the bare metal end of the airfoil wherein the seal member is coated with a abrasive layer having a laser engraved surface with the top of the surface has less than about 5% of the surface area of the base of the abrasive layer. | 04-26-2012 |
20120183394 | TURBOMACHINE SHROUD - An example turbomachine shroud assembly includes an annular shroud configured to receive a rotating component. A radially outer surface of the annular shroud establishes positioning slots and relief slots. The positioning slots are configured to receive a support finger that limits radial movement of the annular shroud. The relief slots are different than the positioning slots. | 07-19-2012 |
20120275908 | TURBOMACHINE SHROUD - A ceramic shroud seal has a roughed inner surface for contacting a rotating turbomachine component. | 11-01-2012 |
20130075119 | STRENGTHENING BY MACHINING - A machining method comprises selecting a finished surface dimension and a material property for a working surface, defining a working temperature range based on the selected material property, and defining a machining power based on the working temperature range. The machining power depends on a removal rate and a specific heat of the working surface. The working surface is machined at the removal rate to achieve the finished surface dimension, and the machine power is controlled to maintain the working surface within the working temperature range. The working surface is heated or cooled from the working temperature range to a transition temperature range, such that the selected material property is preserved in the working surface. | 03-28-2013 |
20130145620 | METHOD FOR MACHINING A SLOT IN A TURBINE ENGINE ROTOR DISK - A method is provided for machining a slot having a slot base in a turbine engine rotor disk. The method includes forming a preform slot that extends along a longitudinal axis through the rotor disk. The preform slot includes a preform slot endwall connected laterally between a first slot sidewall and a second slot sidewall. A cutting tool is rotated about its axial centerline, which is substantially parallel to the longitudinal axis. The preform slot endwall is machined with the rotating cutting tool to form the slot base. | 06-13-2013 |
20130183888 | Slot Machining - A method for cutting a blade root retention slot in a turbine engine disk element includes forming a precursor slot in the element. The precursor slot has first and second sidewalls and a base. A rotating bit is passed through the precursor slot to machine the base. The bit rotates about an axis off-normal to a direction of passing. A cutting performance of the rotating bit is modeled reflecting a chip trapping intensity parameter and a heat intensity parameter. At least one parameter of the bit and its passing is selected so as to avoid tool loading where removed chips/swafs stick onto the bit. | 07-18-2013 |
20130195671 | HOLLOW AIRFOIL CONSTRUCTION UTILIZING FUNCTIONALLY GRADED MATERIALS - A method of forming an airfoil includes the steps of depositing material to form an airfoil in a first layer, and then depositing material in a second layer on the first layer. The first and second layers have distinct densities. An airfoil is also disclosed. The method provides powerful design advantages. | 08-01-2013 |
20140013599 | Method of Manufacturing Fan Blade Shields - A method for manufacturing a fan blade shield having a sheath cavity made from a hard metal material is disclosed The method may comprise: performing a sheath cavity grinding step for the fan blade shield; and performing a sheath cavity bottom grinding step for the fan blade shield. A method for forming a fan blade is disclosed. The method may comprise: obtaining a fan blade body; obtaining a fan blade shield made from a hard metal material and having a sheath cavity match a leading edge of the fan blade body, the fan blade shield being obtained by a process comprising: performing a sheath cavity grinding step for the fan blade shield; and performing a sheath cavity bottom grinding step for the fan blade shield; and attaching the fan blade shield to the leading edge of the fan blade body to produce the fan blade. | 01-16-2014 |
20150086283 | BALL-END MILLING CUTTER TOOL - A tool is disclosed that has an elongated tool body defining a longitudinal axis and includes a ball-end section having a positive taper angle relative to the longitudinal axis of the tool body, and a relief section that extends rearwardly from the ball-end section and has a negative taper angle relative to the positive taper angle of the ball-end section. | 03-26-2015 |