Hoop seal with partial slot geometry

Details Hoop seal with partial slot geometry Hoop seal with partial slot geometry

2011-04-19

2011-04-19

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between axial flow runner and vane or vane diaphragm structure

C415S174500, C416S22000A

Reexamination Certificate

active

07927069

ABSTRACT:
A rotor blade assembly includes a slot for mounting a rotor blade that extends partially through a rotor disk and a continuous uninterrupted hoop seal that extends about the circumference of the rotor disk. The rotor disk includes an integrally formed seal that includes at least one knife edge disposed concentrically about the rotor disk. The slot receives a root portion of a rotor blade but does not extend through the seal. As the seal remains an uninterrupted full hoop about the circumference of the rotor disk, additional rigidity and strength are realized. The increased rigidity and strength provided by the full hoop structure provides for the reduction in material and physical dimensions without compromising desired performance of the seal.

REFERENCES:
patent: 3761200 (1973-09-01), Gardiner
patent: 5601404 (1997-02-01), Collins
patent: 6189891 (2001-02-01), Tomita et al.
patent: 6190131 (2001-02-01), Deallenbach
patent: 2002/0081205 (2002-06-01), Wong

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