US3750574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating round having dual range capability
Assignee: United States Department of the Navy
•
Filing: 1972-02-28
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Granted: 1973-08-07
•
Expires: 1992-02-28
Abstract
Abstract An illuminating round having propulsion means and a flare composition, and means for deploying a parachute upon ignition of the flare composition. The forward end of the round is configured for low drag and means are provided for attaching an auxiliary part which provides for high drag during propulsion of the round.
Inventors
- 👤 C Lohkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:19
CPC Classifications
F; F42; F42B; F42B4/00; F42B4/26; F42B4/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
An illuminating round comprising, a motor case, a nozzle plate closing an aft end of said motor case, an inner case in said motor case positioned forward of said propelling charge, said inner case extending beyond the forward end of said motor case and having a radiused leading edge providing reduced wind resistance during flight, a quantity of illuminating composition and a parachute within said inner case, said parachute being deployed upon ignition of said illuminating composition, a propelling charge in said motor case positioned between said nozzle plate and said quantity of illuminating composition, a primer for igniting said propelling charge, a pyrotechnic delay element for igniting said illuminating composition after said propelling charge is ignited, and a cylindrical disk having a leading edge with a sharp corner removably attached to the forward end of said inner case for providing high drag during flight of said illuminating round.
Claim 2
Dependent Claim
149 words
An illuminating round comprising, a motor case, a nozzle plate closing an aft end of said motor case, an inner case in said motor case positioned forward of said propelling charge, said inner case extending beyond the forward end of said motor case and having a radiused leading edge providing reduced wind resistance during flight, a quantity of illuminating composition and a parachute within said inner case, said parachute being deployed upon ignition of said illuminating composition, a propelling charge in said motor case positioned between said nozzle plate and said quantity of illuminating composition, a primer for igniting said propelling charge, a pyrotechnic delay element for igniting said illuminating composition after said propelling charge is ignited, and a cylindrical disk having a leading edge with a sharp corner removably attached to the forward end of said inner case for providing high drag during flight of said illuminating round.
References Cited (Backward Citations)
US1754986A
Cited
US1941590A
Cited
US2442528A
Cited
US3105438A
Cited
US3431852A
Cited
US3485460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |