US3249118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain control means for liquid-containing vessel
Assignee: —
•
Filing: —
•
Granted: 1966-05-03
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:51
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2802; Y10T137/8593; Y10T137/86236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
FOR USE WITH A LIQUID-CONTAINING VESSEL HAVING A DRAIN OPENING FORMED THEREIN, DRAIN CONTROL MEANS COMPRISING: (A) A CONDUIT HAVING ONE END CONNECTED TO SAID DRAIN OPENING AND ITS OTHER END POSITIONED BELOW SAID DRAIN OPENING TO PERMIT GRAVITY-CAUSED LIQUID FLOW THROUGH SAID CONDUIT, SAID CONDUIT BEING FORMED WITH A PLURALITY OF ALTERNATING DOWNWARDLY AND UPWARDLY EXTENDING SECTIONS, ADJACENT SECTIONS BEING JOINED AT THEIR RESPECTIVE TOPS BELOW THE MINIMUM LIQUID LEVEL USED IN SAID VESSEL; (B) AND MEANS FOR SELECTIVELY VENTING SAID CONDUIT TO ATMOSPHERE CONNECTED TO AT LEAST ONE OF SAID TOPS OF ADJACENT SECTIONS, WHEREBY LIQUID IS RETAINED IN SAID VESSEL WHEN SAID VENTING MEANS IS CLOSED AND DRAINS OUT OF SAID VESSEL WHEN SAID VENTING MEANS IS OPENED.
Claim 2
Dependent Claim
121 words
FOR USE WITH A LIQUID-CONTAINING VESSEL HAVING A DRAIN OPENING FORMED THEREIN, DRAIN CONTROL MEANS COMPRISING: (A) A CONDUIT HAVING ONE END CONNECTED TO SAID DRAIN OPENING AND ITS OTHER END POSITIONED BELOW SAID DRAIN OPENING TO PERMIT GRAVITY-CAUSED LIQUID FLOW THROUGH SAID CONDUIT, SAID CONDUIT BEING FORMED WITH A PLURALITY OF ALTERNATING DOWNWARDLY AND UPWARDLY EXTENDING SECTIONS, ADJACENT SECTIONS BEING JOINED AT THEIR RESPECTIVE TOPS BELOW THE MINIMUM LIQUID LEVEL USED IN SAID VESSEL; (B) AND MEANS FOR SELECTIVELY VENTING SAID CONDUIT TO ATMOSPHERE CONNECTED TO AT LEAST ONE OF SAID TOPS OF ADJACENT SECTIONS, WHEREBY LIQUID IS RETAINED IN SAID VESSEL WHEN SAID VENTING MEANS IS CLOSED AND DRAINS OUT OF SAID VESSEL WHEN SAID VENTING MEANS IS OPENED.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |