Patent US3570766A successfully refreshed from Google Patents.
US3570766A
Expired / Lapsed
US
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Integral plug and strut nozzle
Assignee: United States Department of the Navy
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Filing: 1969-01-15
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Granted: 1971-03-16
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Expires: 1989-01-15
Abstract
Abstract A one-piece exhaust nozzle for rocket motors. It is substantially cylindrical with three funneled inlet holes at its forward end, blending into a single opening at the aft end. A center body, pyramid shaped, forms a contoured inner wall for the nozzle which has a constantly expanding exhaust area.
Inventors
- 👤 Albert W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:03
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
An integral exhaust nozzle for a rocket motor having a cylindrical outer shape, three inlet openings formed in the forward end of said nozzle to receive exhaust gases from said rocket motor, three separate cone-shaped passages extending from said inlet openings and intersecting to form a single terminal outlet in the aft end of said nozzle where the exhaust gases are recombined, and a substantially pyramid-shaped center body formed by the intersection of said three cone-shaped passages.
Claim 2
Dependent Claim
77 words
An integral exhaust nozzle for a rocket motor having a cylindrical outer shape, three inlet openings formed in the forward end of said nozzle to receive exhaust gases from said rocket motor, three separate cone-shaped passages extending from said inlet openings and intersecting to form a single terminal outlet in the aft end of said nozzle where the exhaust gases are recombined, and a substantially pyramid-shaped center body formed by the intersection of said three cone-shaped passages.
Claim 3
Dependent Claim
17 words
An integral exhaust nozzle for a rocket motor according to claim 1 wherein the cones are elliptical.
References Cited (Backward Citations)
FR636026A
Cited
US2755620A
Cited
US2875577A
Cited
US3245620A
Cited
US3300142A
Cited
US3292865A
Cited
US3343766A
Cited
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 |