Method and device to prevent coating a dovetail of a turbine airfoil
US7632541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and masking assembly for masking a dovetail portion of a turbine blade during coating of an airfoil portion of the blade. The masking assembly comprises at least two masking members, each having an exterior surface and an oppositely-disposed undulatory surface complementary to one of oppositely-disposed undulatory surfaces of the dovetail portion. By mating the masking members, the undulatory surfaces thereof define an interior cavity within the masking assembly that accommodates the dovetail portion, and the undulatory surfaces of the masking members contact the undulatory surfaces of the dovetail portion to entrap the dovetail portion within the interior cavity of the masking assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.