US3343710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting arrangement, especially for tanks
Assignee: Andreas Stihl AG and Co KG
•
Filing: 1964-11-27
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Granted: 1967-09-26
•
Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Wehle Anton
- 👤 Mierzwa Dietmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:11
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B65; B65D; B65D90/00; B65D90/22; B65D90/32; B65D90/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN COMBINATION WITH A FUEL TANK HAVING A TOP WALL, ESPECIALLY FOR USE IN CONNECTION WITH PORTABLE INTERNAL COMBUSTION ENGINES: A TUBULAR MEMBER HAVING ONE END PORTION CONNECTED TO THE TOP WALL OF SAID TANK AND HAVING ITS INTERIOR IN COMMUNICATION WITH THE INTERIOR OF SAID TANK, AT LEAST THE OTHER END PORTION OF SAID TUBULAR MEMBER BEING OF YIELDABLE ELASTIC MATERIAL AND NORMALLY HAVING AN INNER SMOOTH SURFACE FOR RECEIVING A CLOSURE MEMBER, AND A CLOSURE MEMBER ARRANGED IN SAID OTHER END PORTION OF SAID TUBULAR MEMBER AND PROVIDED WITH A PERIPHERAL THREAD, THE CORE DIAMETER OF SAID THREAD BEING LESS THAN THE SMALLEST INNER DIAMETER OF SAID TUBULAR MEMBER AT SAID OTHER END PORTION, AND THE OUTER DIAMETER OF SAID THREAD BEING AT LEAST SLIGHTLY GREATER THAN THE SMALLEST INNER DIAMETER OF SAID TUBULAR MEMBER SO THAT THE INNER WALL OF SAID OTHER END PORTION OF SAID TUBULAR MEMBER ONLY PARTIALLY ENTERS SAID THREAD AND THEREBY TOGETHER WITH ADJACENT INNER WALL SURFACE PORTIONS OF SAID TUBULAR MEMBER FORMS A HELICAL VENTING PASSAGE LEADING FROM THE INNER END OF SAID THREAD TO THE ATMOSPHERE.
Claim 2
Dependent Claim
185 words
IN COMBINATION WITH A FUEL TANK HAVING A TOP WALL, ESPECIALLY FOR USE IN CONNECTION WITH PORTABLE INTERNAL COMBUSTION ENGINES: A TUBULAR MEMBER HAVING ONE END PORTION CONNECTED TO THE TOP WALL OF SAID TANK AND HAVING ITS INTERIOR IN COMMUNICATION WITH THE INTERIOR OF SAID TANK, AT LEAST THE OTHER END PORTION OF SAID TUBULAR MEMBER BEING OF YIELDABLE ELASTIC MATERIAL AND NORMALLY HAVING AN INNER SMOOTH SURFACE FOR RECEIVING A CLOSURE MEMBER, AND A CLOSURE MEMBER ARRANGED IN SAID OTHER END PORTION OF SAID TUBULAR MEMBER AND PROVIDED WITH A PERIPHERAL THREAD, THE CORE DIAMETER OF SAID THREAD BEING LESS THAN THE SMALLEST INNER DIAMETER OF SAID TUBULAR MEMBER AT SAID OTHER END PORTION, AND THE OUTER DIAMETER OF SAID THREAD BEING AT LEAST SLIGHTLY GREATER THAN THE SMALLEST INNER DIAMETER OF SAID TUBULAR MEMBER SO THAT THE INNER WALL OF SAID OTHER END PORTION OF SAID TUBULAR MEMBER ONLY PARTIALLY ENTERS SAID THREAD AND THEREBY TOGETHER WITH ADJACENT INNER WALL SURFACE PORTIONS OF SAID TUBULAR MEMBER FORMS A HELICAL VENTING PASSAGE LEADING FROM THE INNER END OF SAID THREAD TO THE ATMOSPHERE.
References Cited (Backward Citations)
US2263644A
Cited
US3147876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |