Patent US3417786A successfully refreshed from Google Patents.
US3417786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly of tubes of different coefficients of thermal expansion
Assignee: Individual
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Filing: 1966-08-04
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Granted: 1968-12-24
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Expires: 1986-08-04
Abstract
No abstract record available.
Inventors
- 👤 Schnabel Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:14
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/26; B29C63/34; B29C63/346; F; F16; F16L; F16L23/00; F16L23/12; F16L23/125; F16L58/00; F16L58/18; F16L58/187; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A TUBULAR ASSEMBLY COMPRISING OUTER AND INNER TUBULAR MEANS CONNECTED TO EACH OTHER AT LEAST AT ONE END, SAID OUTER AND INNER TUBULAR MEANS HAVING SUBSTANTIALLY DIFFERENT COEFFICIENTS OF THERMAL EXPANSION, SAID INNER TUBULAR MEANS EXTENDING ALONG THE LINEAR THEREFOR, SAID OUTER TUBULAR MEANS AND FORMING A LINEAR THEREFOR, SAID OUTER TUBULAR MEANS HAVING AN ANNULAR WALL PORTION SURROUNDING SAID INNER TUBULAR MEANS AND HAVING AN INNER SURFACE FORMED WITH AN ANNULAR GROOVE, SAID INNER TUBULAR MEANS HAVING AN ANNULAR EXPANSION BULGE SPANNING SAID GROOVE AND EXTENDING ONLY PARTLY INTO SAID GROOVE AND PROVIDING SAID INNER TUBULAR MEANS WITH AN INNER ANNULAR GROOVE AND WITH AN OUTER CIRCUMFERENTIAL RIM EXTENDING PARTIALLY INTO SAID GROOVE OF SAID OUTER TUBULAT MEANS, SO THAT DURING EXPANSION AND CONTRACTION OF SAID INNER TUBULAR MEANS WITH RESPECT TO SAID OUTER TUBULAR MEANS SAID EXPANSION BULGE OF SAID INNER TUBULAR MEANS CAN MOVE IN SAID GROOVE OF SAID OUTER TUBULAR MEANS.
Claim 2
Dependent Claim
155 words
A TUBULAR ASSEMBLY COMPRISING OUTER AND INNER TUBULAR MEANS CONNECTED TO EACH OTHER AT LEAST AT ONE END, SAID OUTER AND INNER TUBULAR MEANS HAVING SUBSTANTIALLY DIFFERENT COEFFICIENTS OF THERMAL EXPANSION, SAID INNER TUBULAR MEANS EXTENDING ALONG THE LINEAR THEREFOR, SAID OUTER TUBULAR MEANS AND FORMING A LINEAR THEREFOR, SAID OUTER TUBULAR MEANS HAVING AN ANNULAR WALL PORTION SURROUNDING SAID INNER TUBULAR MEANS AND HAVING AN INNER SURFACE FORMED WITH AN ANNULAR GROOVE, SAID INNER TUBULAR MEANS HAVING AN ANNULAR EXPANSION BULGE SPANNING SAID GROOVE AND EXTENDING ONLY PARTLY INTO SAID GROOVE AND PROVIDING SAID INNER TUBULAR MEANS WITH AN INNER ANNULAR GROOVE AND WITH AN OUTER CIRCUMFERENTIAL RIM EXTENDING PARTIALLY INTO SAID GROOVE OF SAID OUTER TUBULAT MEANS, SO THAT DURING EXPANSION AND CONTRACTION OF SAID INNER TUBULAR MEANS WITH RESPECT TO SAID OUTER TUBULAR MEANS SAID EXPANSION BULGE OF SAID INNER TUBULAR MEANS CAN MOVE IN SAID GROOVE OF SAID OUTER TUBULAR MEANS.
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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |