Variable dual spring blade root support for gas turbines

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9909431
SERIAL NO

14699269

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An adjustable blade root spring device for turbine blade fixation in turbomachinery. The device is designed to be placed in a space in a rotor disk cavity adjacent to a tip of a blade root, where the device applies a radial outward force on the turbine blade to fix the blade position in the rotor disk. The device includes a wave spring with integral end blocks which is compressed by a bolt and a coil spring. When the wave spring is compressed in length, it increases in height and makes contact with the rotor disk and the turbine blade. The force of the wave spring on the turbine blade can be adjusted via the bolt, and the coil spring provides an increased compliance range. The body of the device has an oblong cross-sectional shape, thereby preventing rotation of the device in the space between the blade and the disk.

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Patent Owner(s)

Patent OwnerAddress
SIEMENS ENERGY INC4400 ALAFAYA TRAIL ORLANDO FL 32826

International Classification(s)

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  • 2015 Application Filing Year
  • F01D Class
  • 2939 Applications Filed
  • 2348 Patents Issued To-Date
  • 79.90 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gupta, Mohit Kissimmee, US 179 1632
Holden, Erica Boca Raton, US 1 10
Hudson, Robert Jupiter, US 21 97
Myers, David Palm Beach Gardens, US 60 1185
Polyzopoulos, Charalambos Orlando, US 20 58

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Patent Citation Ranking

  • 7 Citation Count
  • F01D Class
  • 31.14 % this patent is cited more than
  • 7 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges13727914531101 - 1011 - 2021 - 3031 - 4051 - 6061 - 70020406080100120140160180200220240260280300

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