US3292245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for making rotors
Assignee: Mannesmann Demag AG
•
Filing: 1962-02-20
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Granted: 1966-12-20
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Expires: 1982-02-20
Abstract
No abstract record available.
Inventors
- 👤 Pfau Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3061; B; B23; B23K; B23K9/00; B23K9/0026; B23P; B23P15/00; B23P15/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49321
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR MANUFACTURING A ROTOR FOR AN AXIAL COMPRESSOR, TURBINE AND THE LIKE FROM INDIVIDUAL BLADE ELEMENTS HAVING FOOT PORTIONS WHICH ARE ELONGATED IN AN AXIAL DIRECTION, COMPRISING POSITIONING A PAIR OF INDIVIDUAL BLADE ELEMENTS OF THE ROTOR TOGETHER, JOINING THE PAIR OF ELEMENTS TOGETHER ALONG THEIR FOOT PORTIONS BY WELDING TO FORM A SEGMENT, ADDING AN ADDITIONAL BLADE ELEMENT ONE AT A TIME TO THE BLADE ELEMENT SEGMENT THUS FORMED AND WELDING ALONG THEIR FOOT PORTIONS WHILE RELEASING THE ADDED BLADE ELEMENT TO PERMIT STRESS RELIEVING AFTER EACH IS WELDED, REPEATING THE ADDING OF BLADE ELEMENTS TO FORM AN ENTIRE RING, THEREAFTER PLACING A BODY MEMBER CENTRALLY OF THE RING THUS FORMED AND JOINING THE BODY MEMBER TO THE RING BY WELDING.
Claim 2
Dependent Claim
124 words
A PROCESS FOR MANUFACTURING A ROTOR FOR AN AXIAL COMPRESSOR, TURBINE AND THE LIKE FROM INDIVIDUAL BLADE ELEMENTS HAVING FOOT PORTIONS WHICH ARE ELONGATED IN AN AXIAL DIRECTION, COMPRISING POSITIONING A PAIR OF INDIVIDUAL BLADE ELEMENTS OF THE ROTOR TOGETHER, JOINING THE PAIR OF ELEMENTS TOGETHER ALONG THEIR FOOT PORTIONS BY WELDING TO FORM A SEGMENT, ADDING AN ADDITIONAL BLADE ELEMENT ONE AT A TIME TO THE BLADE ELEMENT SEGMENT THUS FORMED AND WELDING ALONG THEIR FOOT PORTIONS WHILE RELEASING THE ADDED BLADE ELEMENT TO PERMIT STRESS RELIEVING AFTER EACH IS WELDED, REPEATING THE ADDING OF BLADE ELEMENTS TO FORM AN ENTIRE RING, THEREAFTER PLACING A BODY MEMBER CENTRALLY OF THE RING THUS FORMED AND JOINING THE BODY MEMBER TO THE RING BY WELDING.
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |