US3171586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airfoil bladed fans
Assignee: Westinghouse Electric Corp
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Filing: 1963-12-31
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Granted: 1965-03-02
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Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Ariewitz Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A ROTOR FOR A CENTRIFUGAL FAN COMPRISING ALIGNED, SPACED-APART, SIDE AND BACK PLATES, A HOLLOW AIRFOILSHAPED BLADE EXTENDING BETWEEN AND IN CONTACT AT ITS ENDS WITH THE INNER SIDES OF SAID PLATES, AN END PLATE IN ONE OF SAID BLADE ENDS AND WELDED TO SAID BLADE, SAID END PLATE HAVING ITS OUTER SIDE IN CONTACT WITH THE INNER SIDE OF ONE OF SAID FIRST MENTIONED PLATES, A PLURALLITY OF HOLLOW BOSSES WITHIN SAID BLADE AND SPACED APART ALONG THE LENGTH THEREOF, SAID BOSSES HAVING OUTER SIDES IN CONTACT WITH THE INNER SIDE OF SAID END PLATE, A NUT WITHIN THE CAVITY OF EACH OF SAID BOSSES, AND A PLURALITY OF STUDS EXTENDING THROUGH SAID ONE PLATE INTO RESPECTIVE ONES OF SAID CAVITIES SAID STUDS HAVING INNER ENDS THREADED INTO RESPECTIVE ONES OF SAID NUTS.
Claim 2
Dependent Claim
134 words
A ROTOR FOR A CENTRIFUGAL FAN COMPRISING ALIGNED, SPACED-APART, SIDE AND BACK PLATES, A HOLLOW AIRFOILSHAPED BLADE EXTENDING BETWEEN AND IN CONTACT AT ITS ENDS WITH THE INNER SIDES OF SAID PLATES, AN END PLATE IN ONE OF SAID BLADE ENDS AND WELDED TO SAID BLADE, SAID END PLATE HAVING ITS OUTER SIDE IN CONTACT WITH THE INNER SIDE OF ONE OF SAID FIRST MENTIONED PLATES, A PLURALLITY OF HOLLOW BOSSES WITHIN SAID BLADE AND SPACED APART ALONG THE LENGTH THEREOF, SAID BOSSES HAVING OUTER SIDES IN CONTACT WITH THE INNER SIDE OF SAID END PLATE, A NUT WITHIN THE CAVITY OF EACH OF SAID BOSSES, AND A PLURALITY OF STUDS EXTENDING THROUGH SAID ONE PLATE INTO RESPECTIVE ONES OF SAID CAVITIES SAID STUDS HAVING INNER ENDS THREADED INTO RESPECTIVE ONES OF SAID NUTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |