US3247859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-implosion device for milk tanks and the like
Assignee: POLAR Manufacturing CO
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Filing: 1963-03-04
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Granted: 1966-04-26
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard E Traut
- 👤 Frank F Warzecha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/06; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1782; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A CROSS-SECTIONALLY ELLIPTICAL TANK FOR TRANSPORTING FLUIDS, SAID TANK BEING HORIZONTALLY DISPOSED WITH ITS MINOR TRANSVERSE AXIS LYING IN A GENERALLY VERTICAL PLANE AND HAVING A BREATHER VALVE IN ITS UPPER PORTION AND A FLUID WITHDRAWAL VALVE IN ITS LOWER PORTION, THE IMPROVEMENT WHICH COMPRISES (A) A TUBULAR VALVE BODY PROJECTING THROUGH THE UPPER WALL OF SAID TANK INTERMEDIATE THE ENDS THEREOF AND WITH ITS AXIS IN GENERALY ALIGNMENT WITH SAID MINOR AXIS OF SAID TANK, (B) A READILY PUNCTURABLE PLUG NORMALLY CLOSING THE OPENING DEFINED BY SAID TUBULAR BODY,
Claim 2
Dependent Claim
91 words
IN A CROSS-SECTIONALLY ELLIPTICAL TANK FOR TRANSPORTING FLUIDS, SAID TANK BEING HORIZONTALLY DISPOSED WITH ITS MINOR TRANSVERSE AXIS LYING IN A GENERALLY VERTICAL PLANE AND HAVING A BREATHER VALVE IN ITS UPPER PORTION AND A FLUID WITHDRAWAL VALVE IN ITS LOWER PORTION, THE IMPROVEMENT WHICH COMPRISES (A) A TUBULAR VALVE BODY PROJECTING THROUGH THE UPPER WALL OF SAID TANK INTERMEDIATE THE ENDS THEREOF AND WITH ITS AXIS IN GENERALY ALIGNMENT WITH SAID MINOR AXIS OF SAID TANK, (B) A READILY PUNCTURABLE PLUG NORMALLY CLOSING THE OPENING DEFINED BY SAID TUBULAR BODY,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |