Patent US3237402A successfully refreshed from Google Patents.
US3237402A
Expired / Lapsed
US
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Variable thrust nozzle
Assignee: Individual
•
Filing: 1963-11-14
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Granted: 1966-03-01
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Steverding Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:15
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/978
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A VARIABLE THRUST NOZZLE COMPRISING: (A) A FORWARD CONVERGENT PORTION, AN INTERMEDIATE THROAT PORTION, AND A REARWARD DIVERGENT PORTION; (B) A PLURALITY OF RING-SHAPED RAMPS DISPOSED CONCENTRICALLY WITHIN SAID DIVERGENT PORTION AND ARRANGED SEQUENTIALLY FROM FRONT TO REAR THEREOF WITH THE REARWARD END OF THE FORWARD RAMP CONTIGUOUS THE FORWARD END OF THE RAMP IMMEDIATELY TO THE REAR THEREOF; (C) EACH OF SAID RAMPS HAVING A THIN, FORWARD EDGE IN ABUTTING ENGAGEMENT WITH SAID DIVERGENT PORTION; (D) EACH OF SAID RAMPS HAVING VARYING INNER AND OUTER DIAMETERS THEREBY DEFINING AN OUTER DIVERGENT SURFACE CONFORMING TO THE DIVERGENT NOZZLE PORTION AND AN INNER DIVERGENT SURFACE, THE DIAMETERS OF SAID SUR-
Claim 2
Dependent Claim
109 words
A VARIABLE THRUST NOZZLE COMPRISING: (A) A FORWARD CONVERGENT PORTION, AN INTERMEDIATE THROAT PORTION, AND A REARWARD DIVERGENT PORTION; (B) A PLURALITY OF RING-SHAPED RAMPS DISPOSED CONCENTRICALLY WITHIN SAID DIVERGENT PORTION AND ARRANGED SEQUENTIALLY FROM FRONT TO REAR THEREOF WITH THE REARWARD END OF THE FORWARD RAMP CONTIGUOUS THE FORWARD END OF THE RAMP IMMEDIATELY TO THE REAR THEREOF; (C) EACH OF SAID RAMPS HAVING A THIN, FORWARD EDGE IN ABUTTING ENGAGEMENT WITH SAID DIVERGENT PORTION; (D) EACH OF SAID RAMPS HAVING VARYING INNER AND OUTER DIAMETERS THEREBY DEFINING AN OUTER DIVERGENT SURFACE CONFORMING TO THE DIVERGENT NOZZLE PORTION AND AN INNER DIVERGENT SURFACE, THE DIAMETERS OF SAID SUR-
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |