Turbine blade tip shroud
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 27, 2018
Issued Date -
N/A
app pub date -
May 20, 2014
filing date -
May 21, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A turbine blade tip shroud (22C, 22D) with a seal rail (32C, 32D) oriented in a circumferential direction of rotation (29) relative to a turbine axis, and extending radially outward from the tip relative to the turbine axis. A first tooth (48, 68) and a second tooth (50, 70) form respective downstream and upstream lateral departures or bumps on the seal rail. Each tooth has a sharp top leading edge (48, 50, 68, 70) and a smoothly curved side surface (49, 51, 69, 71). A back portion (56, 76) of the seal rail may span linearly from a lateral peak (66, 78) of the second tooth to a back end (62) of the seal rail that is centered on an extended centerline (60) of a front portion (54, 74) of the seal rail. The teeth may be disposed proximate or over a stacking axis (52) of the blade.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- F01D Class
- 31.14 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 27, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 27, 2029 |
