Patent US3355769A successfully refreshed from Google Patents.
US3355769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming hollow tubing
Assignee: BAE Systems Space & Mission Systems Inc
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Filing: 1964-12-04
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Granted: 1967-12-05
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Clement V Fogelberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:00
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
APPARATUS FOR FORMING HOLLOW TUBING COMPRISING A HOLLOW BODY PORTION, A FORMING MEMBER EXTENDING LOGITUDINALLY WITHIN AND RADIALLY SPACED FROM SAID HOLLOW BODY PORTION DEFINING A SUBSTANTIALLY TOROIDAL CAVITY, AN INLET PASSAGE TANGENTIALLY CONNECTED TO SAID CHAMBER, AN OUTLET PASSAGE OPENING FROM SAID MIXING CHAMBER PARALLEL TO THE AXIS OF SAID TOROID, AND AN ANNULAR EXTRUSION DIE AT THE OUTLET PORTION OF SAID OUTLET PASSAGE.
Claim 2
Dependent Claim
65 words
APPARATUS FOR FORMING HOLLOW TUBING COMPRISING A HOLLOW BODY PORTION, A FORMING MEMBER EXTENDING LOGITUDINALLY WITHIN AND RADIALLY SPACED FROM SAID HOLLOW BODY PORTION DEFINING A SUBSTANTIALLY TOROIDAL CAVITY, AN INLET PASSAGE TANGENTIALLY CONNECTED TO SAID CHAMBER, AN OUTLET PASSAGE OPENING FROM SAID MIXING CHAMBER PARALLEL TO THE AXIS OF SAID TOROID, AND AN ANNULAR EXTRUSION DIE AT THE OUTLET PORTION OF SAID OUTLET PASSAGE.
References Cited (Backward Citations)
GB823066A
Cited
US3019481A
Cited
US3205534A
Cited
US3218672A
Cited
US3209404A
Cited
US3186032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |