US2755133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area spray bar
Assignee: Individual
•
Filing: 1954-02-12
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Granted: 1956-07-17
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Expires: 1974-02-12
Abstract
No abstract record available.
Inventors
- 👤 Earl W Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:34
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A SUBSTANTIALLY CLOSED THIN-WALLED TUBE, SAID TUBE BEING OF NON-CIRCULAR CROSS SECTION, MEANS ADAPTED TO CONNECT SAID TUBE TO A SOURCE OF FLUID UNDER PRESSURE, AN ORIFICE IN THE WALL OF SAID TUBE AND A PIN IN SAID TUBE, FIXED TO A WALL THEREOF, AND ALIGNED WITH SAID ORIFICES AND SEATED THEREON, SAID PIN AND ORIFICE BEING LOCATED ON A MINOR AXIS OF THE CROSS SECTION OF SAID TUBE, WHEREBY UPON AN INCREASE IN FLUID PRESSURE SAID TUBE WILL TEND TO BECOME CIRCULAR IN CROSS SECTION AND SAID PIN WILL BE PROGRESSIVELY WITHDRAWN FROM ITS SEAT.
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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |