Probe holder assembly for ultrasonic testing of turbomachine blades
Abstract
Abstract THE DISCLOSURE ILLUSTRATES A PROBE FOR USE IN ULTRASONIC TESTING OF A TURBOMACHINE BLADE SECURED AT ITS ROOT TO A ROTOR. THE PROBE COMPRISES AN ELONGATED BASE AND A GUIDE AT ONE END FOR ACCURATELY POSITIONING ONE SIDE OF THE BASE RELATIVE TO A BLADE TO BE TESTED. AN ULTRASONIC PROBE IS MOUNTED ON FULCRUMS IN THE BASE AND IS ADAPTED TO SURFACE CONTACT THE BLADE AT A GIVEN DISTANCE FROM ITS ROOT. A CAM MECHANISM SUPPORTED BY THE BASE POSITIVELY MAINTAINS THE BLADE OUT OF CONTACT WITH THE PROBE UNTIL THE FIRST END OF THE BASE IS ACCURATELY POSITIONED AT THE ROOT OF THE BLADE. ADDITIONALLY, A SWITCH IS ACTUATED BY THE CAM MEANS TO ENABLE ENERGIZATION OF THE PROBE ONLY WHEN THE FIRST END OF THE BASE IS POSITIONED AT THE ROOT OF THE BLADE.
Inventors
- 👤 Ernest M Mihalyak
- 👤 Paul E Mcmahon
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |