Patent US3295504A successfully refreshed from Google Patents.
US3295504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube support for steam boilers having an upright wall formed by helically arranged tubes
Assignee: Vereinigte Kesselwerke AG
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Filing: 1965-06-08
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Granted: 1967-01-03
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Expires: 1985-06-08
Abstract
No abstract record available.
Inventors
- 👤 Engler Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:11
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/62; F22B37/64; F22B37/68; F22B37/02; F22B37/10; F22B37/20; F22B37/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A STEAM BOILER HAVING AN UPRIGHT SUBSTANTIALLY CYLINDRICAL WALL FORMED BY A PLURALITY OF TUBES EXTENDING IN CONTACT WITH EACH OTHER IN SUBSTANTIALLY HELICAL FORM SUBSTANTIALLY PARALLEL TO EACH OTHER FROM THE LOWER TO THE UPPER END OF SAID CYLINDRICAL WALL AND BEING WELDED TO EACH OTHER, IN COMBINATION, SUPPORT MEANS; AND A PLURALITY OF SUBSTANTIALLY VERTICAL ELONGATED TIE MEANS FIXED AT THE UPPER ENDS THEREOF TO SAID SUPPORT MEANS AND EXTENDING SPACED FROM EACH OTHER ALONG THE OUTER SURFACE OF SAID WALL SUBSTANTIALLY FROM THE UPPER TO THE LOWER END THEREOF AT SPACED PORTIONS THEREOF, SAID TIE MEANS HAVING PORTIONS FACING THE OUTER SURFACE OF SAID WALL AND HAVING AT SAID PORTIONS A CONTOUR MATCHING THAT OF THE TUBE PORTIONS FORMING THE OUTER WALL SURFACE AND BEING WELDED AT SAID PORTIONS TO THE TUBES FORMING THE WALL SO THAT THE WEIGHT OF THE TUBES AND ANY WEIGHT CARRIED THEREBY IS SUSPENDED BY SAID TIE MEANS ON SAID SUPPORT MEANS, WHEREBY BENDING STRESSES IN SAID TUBES ARE REDUCED.
Claim 2
Dependent Claim
169 words
IN A STEAM BOILER HAVING AN UPRIGHT SUBSTANTIALLY CYLINDRICAL WALL FORMED BY A PLURALITY OF TUBES EXTENDING IN CONTACT WITH EACH OTHER IN SUBSTANTIALLY HELICAL FORM SUBSTANTIALLY PARALLEL TO EACH OTHER FROM THE LOWER TO THE UPPER END OF SAID CYLINDRICAL WALL AND BEING WELDED TO EACH OTHER, IN COMBINATION, SUPPORT MEANS; AND A PLURALITY OF SUBSTANTIALLY VERTICAL ELONGATED TIE MEANS FIXED AT THE UPPER ENDS THEREOF TO SAID SUPPORT MEANS AND EXTENDING SPACED FROM EACH OTHER ALONG THE OUTER SURFACE OF SAID WALL SUBSTANTIALLY FROM THE UPPER TO THE LOWER END THEREOF AT SPACED PORTIONS THEREOF, SAID TIE MEANS HAVING PORTIONS FACING THE OUTER SURFACE OF SAID WALL AND HAVING AT SAID PORTIONS A CONTOUR MATCHING THAT OF THE TUBE PORTIONS FORMING THE OUTER WALL SURFACE AND BEING WELDED AT SAID PORTIONS TO THE TUBES FORMING THE WALL SO THAT THE WEIGHT OF THE TUBES AND ANY WEIGHT CARRIED THEREBY IS SUSPENDED BY SAID TIE MEANS ON SAID SUPPORT MEANS, WHEREBY BENDING STRESSES IN SAID TUBES ARE REDUCED.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |