US3221933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispensing device
Assignee: Coffee-Mat Corp
•
Filing: 1964-07-29
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Granted: 1965-12-07
•
Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Sollie W Small
- 👤 Herman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:14
CPC Classifications
G; G07; G07F; G07F13/00; G07F13/06; G07F13/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A LIQUID DISPENSING DEVICE COMPRISING A LIQUID RESERVOIR, A METERING VESSEL IMMERSED IN SAID RESERVOIR AND HAVING AN INLET PORT FORMED THEREIN COMMUNICATING WITH SAID RESERVOIR, AN OUTLET CONDUIT COMMUNICATING WITH AND PROJECTING INTO SAID VESSEL TO A PREDETERMINED LEVEL THEREIN, AN AIR CONDUIT COMMUNICATING WITH THE INTERIOR OF SAID VESSEL AT A POINT ABOVE SAID PREDETERMINED LEVEL, MEANS INCLUDING A NORMALLY CLOSED FIRST VALVE CONNECTING SAID AIR CONDUIT TO A SOURCE OF COMPRESSED AIR, A SECOND VALVE ASSOCIATED WITH SAID INLET PORT AND MOVABLE BETWEEN AN OPEN AND CLOSED POSITION, A FIRST MEANS FOR ALTERNATIVELY OPENING AND CLOSING SAID SECOND VALVE, AND A SECOND
Claim 2
Dependent Claim
105 words
A LIQUID DISPENSING DEVICE COMPRISING A LIQUID RESERVOIR, A METERING VESSEL IMMERSED IN SAID RESERVOIR AND HAVING AN INLET PORT FORMED THEREIN COMMUNICATING WITH SAID RESERVOIR, AN OUTLET CONDUIT COMMUNICATING WITH AND PROJECTING INTO SAID VESSEL TO A PREDETERMINED LEVEL THEREIN, AN AIR CONDUIT COMMUNICATING WITH THE INTERIOR OF SAID VESSEL AT A POINT ABOVE SAID PREDETERMINED LEVEL, MEANS INCLUDING A NORMALLY CLOSED FIRST VALVE CONNECTING SAID AIR CONDUIT TO A SOURCE OF COMPRESSED AIR, A SECOND VALVE ASSOCIATED WITH SAID INLET PORT AND MOVABLE BETWEEN AN OPEN AND CLOSED POSITION, A FIRST MEANS FOR ALTERNATIVELY OPENING AND CLOSING SAID SECOND VALVE, AND A SECOND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |