Patent ID: 11927099
Assignee: NUOVO PIGNONE TECNOLOGIE-SRL
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 17:
18. A method for manufacturing a seal structure, the method comprising the following steps:
inserting a seal element in an annular groove of a carrier ring, the annular groove being formed between a circumferential outer wall, a first side wall, and a second side wall of the carrier ring, the first side wall and the second side wall protruding radially inwardly from the circumferential outer wall towards a center axis of the carrier ring;
mechanically coupling the seal element to the carrier ring with a first set of fastening pins and a second set of fastening pins, wherein the first set and the second set extend in opposing directions through an opening in the first side wall and the second side wall and penetrate into a corresponding recesses in the seal element, and wherein the seal element has a first region in surface-to-surface contact with the annular groove and a second region protruding from the annular groove of the carrier ring toward the center axis; and
machining an inwardly facing surface of the second region of the seal element to produce a plurality of sealing teeth that form a labyrinth seal thereon.