Patent US2743580A successfully refreshed from Google Patents.
US2743580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Igniter for rocket motors
Assignee: Raytheon Co
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Filing: 1952-10-07
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Granted: 1956-05-01
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Expires: 1972-10-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Sidney Loeb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:23
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/08; F42C19/0819
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
AN IGNITER FOR IGNITING A ROCKET MOTOR SOLID PROPELLANT HAVING A CENTRAL OPENING AND, COMPRISING A ROLL OF IGNITABLE MATERIAL DISPOSED ON AND BONDED TO ONE SURFACE OF A SHEET OF CELLULOSE ACETATE, SQUIBS CENTRALLY POSITIONED WITHIN THE ENDS OF SAID ROLL, MEANS FOR EFFECTING BURNING OF SAID EQUIBS AT A DESIRED INSTANT TO IGNITE SAID MATERIAL, AND RESILIENT MEANS AFFIXED TO SAID ROLL FOR RELEASABLE ENGAGEMENT WITHIN THE OPENING OF SAID PROPELLANT.
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |