US3369792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airfoil vane
Assignee: General Electric Co
•
Filing: 1966-04-07
•
Granted: 1968-02-20
•
Expires: 1986-04-07
Abstract
No abstract record available.
Inventors
- 👤 Kraimer Robert Henry
- 👤 William R Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:30
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A FLUID DIRECTING ELEMENT FOR TURBOMACHINERY COMPRISING, A HOLLOW AIRFOIL VANE HAVING LEADING AND TRAILING EDGES, AT LEAST ONE PAIR OF LONGITUDINALLY EXTENDING RIBS DISPOSED ON OPPOSITE INTERNAL SURFACES OF SAID HOLLOW AIRFOIL, SAID PAIR OF RIBS BEING SPACED APART THROUGHOUT THEIR LONGITUDINAL LENGTH, THIN-WALLED GENERALLY U-SHAPED INSERT MEANS EXTENDING LENGTHWISE OF SAID VANE INTERNALLY THEREOF FROM ONE END, SAID INSERT HAVING CRIMPED SURFACES ON OPPOSITE LEGS OF THE U AND SPANNING SAID RIBS WHEREBY SAID INSERT MAY BE SLID ALONG SAID RIBS INTO SAID VANE TO FORM A LONGITUDINAL BAFFLE,
Claim 2
Dependent Claim
91 words
A FLUID DIRECTING ELEMENT FOR TURBOMACHINERY COMPRISING, A HOLLOW AIRFOIL VANE HAVING LEADING AND TRAILING EDGES, AT LEAST ONE PAIR OF LONGITUDINALLY EXTENDING RIBS DISPOSED ON OPPOSITE INTERNAL SURFACES OF SAID HOLLOW AIRFOIL, SAID PAIR OF RIBS BEING SPACED APART THROUGHOUT THEIR LONGITUDINAL LENGTH, THIN-WALLED GENERALLY U-SHAPED INSERT MEANS EXTENDING LENGTHWISE OF SAID VANE INTERNALLY THEREOF FROM ONE END, SAID INSERT HAVING CRIMPED SURFACES ON OPPOSITE LEGS OF THE U AND SPANNING SAID RIBS WHEREBY SAID INSERT MAY BE SLID ALONG SAID RIBS INTO SAID VANE TO FORM A LONGITUDINAL BAFFLE,
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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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |