Patent US3324534A successfully refreshed from Google Patents.
US3324534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a transition section for connecting a circular tube and a noncircular tube
Assignee: Individual
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Filing: 1964-08-21
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Granted: 1967-06-13
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Spurk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:53
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/14; F16L55/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49446; Y10T29/49826; Y10T29/49904; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF FORMING A TRANSITION SECTION FOR CONNECTING TOGETHER A CIRCULAR TUBE AND A SYMMETRICAL NONCIRCULAR TUBE EACH HAVING THE SAME CROSS SECTIONAL AREA, COMPRISING THE STEPS OF FACING OFF THE PERIPHERY OF ONE END OF SAID CIRCULAR TUBE TO PROVIDE A SYMMETRICAL NONCIRCULAR TRUNCATED PYRAMID OF THE SAME CROSS SECTIONAL SHAPE AS SAID NONCIRCULAR TUBE, COUNTERBORING SAID END OF SAID CIRCULAR TUBE WITH A PLANE CURVE TO PROVIDE A PLURALITY OF EQUI-SPACED PROJECTIONS EACH HAVING AN INNER SURFACE COMPRISING A SEGMENT OF A SURFACE OF REVOLUTION AND ANGULARLY DISPOSED OUTER SURFACES COMPRISING THE CORNERS OF SAID PYRAMID, FLARING AN END OF SAID SYMMETRICAL NONCIRCULAR TUBE TO PROVIDE A HOLLOW SYMMETRICAL NONCIRCULAR TRUNCATED PYRAMIDAL BODY COMPLEMENTARY TO SAID PYRAMID, AND SECURING SAID PYRAMID AND PYRAMIDAL BODY TOGETHER IN NESTED COAXIAL RELATION WHEREBY TO PROVIDE A COMPOSITE TAPERING INNER SURFACE OF SAID TRANSISTION SECTION WHICH HAS A CONSTANT CROSS SECTIONAL AREA THROUGHOUT ITS LENGTH EQUAL TO THE CROSS SECTIONAL AREA OF EACH OF SAID TUBES.
Claim 2
Independent Claim
165 words
THE METHOD OF FORMING A TRANSITION SECTION FOR CONNECTING TOGETHER A CIRCULAR TUBE AND A SYMMETRICAL NONCIRCULAR TUBE EACH HAVING THE SAME CROSS SECTIONAL AREA, COMPRISING THE STEPS OF FACING OFF THE PERIPHERY OF ONE END OF SAID CIRCULAR TUBE TO PROVIDE A SYMMETRICAL NONCIRCULAR TRUNCATED PYRAMID OF THE SAME CROSS SECTIONAL SHAPE AS SAID NONCIRCULAR TUBE, COUNTERBORING SAID END OF SAID CIRCULAR TUBE WITH A PLANE CURVE TO PROVIDE A PLURALITY OF EQUI-SPACED PROJECTIONS EACH HAVING AN INNER SURFACE COMPRISING A SEGMENT OF A SURFACE OF REVOLUTION AND ANGULARLY DISPOSED OUTER SURFACES COMPRISING THE CORNERS OF SAID PYRAMID, FLARING AN END OF SAID SYMMETRICAL NONCIRCULAR TUBE TO PROVIDE A HOLLOW SYMMETRICAL NONCIRCULAR TRUNCATED PYRAMIDAL BODY COMPLEMENTARY TO SAID PYRAMID, AND SECURING SAID PYRAMID AND PYRAMIDAL BODY TOGETHER IN NESTED COAXIAL RELATION WHEREBY TO PROVIDE A COMPOSITE TAPERING INNER SURFACE OF SAID TRANSISTION SECTION WHICH HAS A CONSTANT CROSS SECTIONAL AREA THROUGHOUT ITS LENGTH EQUAL TO THE CROSS SECTIONAL AREA OF EACH OF SAID TUBES.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |