Patent US3158183A successfully refreshed from Google Patents.
US3158183A
Expired / Lapsed
US
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Assignee: Parke Davis and Co LLC
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Filing: 1962-07-25
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Granted: 1964-11-24
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Expires: 1982-07-25
Abstract
No abstract record available.
Inventors
- 👤 Frank E Brown
- 👤 Richard G Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:09
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A LIQUID DISPENSING DEVICE FOR USE WITH A CONTAINER FOR LIQUID HAVING AN OUTLET COMPRISING A CLOSURE ADAPTED TO BE REMOVABLY SECURED TO THE CONTAINER FOR CLOSING THE OUTLET, A HOLLOW STEM ADAPTED TO PROJECT INTO THE CONTAINER, A FLEXIBLE BULB HAVING A WALLED AIR CHAMBER THEREIN ADAPTED TO BE COLLAPSED BY FLEXING SAID BULB AND COMMUNICATING WITH THE INTERIOR OF SAID HOLLOW STEM, AND A VALVE POSITIONED FOR CLOSING THE COMMUNICATION BETWEEN SAID HOLLOW STEM AND SAID BULB CHAMBER, SAID VALVE BEING ADAPTED FOR MOVEMENT TO OPEN POSITION BY FLEXING SAID BULB TO COLLAPSE SAID CHAMBER AND MEANS FOR OPPOSING RETURN MOVEMENT OF SAID VALVE TO SAID CLOSED POSITION THEREOF SUCH THAT THE BULB MAY THEREAFTER BE OPERATED TO ALTERNATELY DRAW LIQUID INTO SAID HOLLOW STEM AND TO EXPEL THE SAME THEREFROM IN RESPONSE TO EXPANSION AND COLLAPSE OF THE BULB CHAMBER.
Claim 2
Dependent Claim
143 words
A LIQUID DISPENSING DEVICE FOR USE WITH A CONTAINER FOR LIQUID HAVING AN OUTLET COMPRISING A CLOSURE ADAPTED TO BE REMOVABLY SECURED TO THE CONTAINER FOR CLOSING THE OUTLET, A HOLLOW STEM ADAPTED TO PROJECT INTO THE CONTAINER, A FLEXIBLE BULB HAVING A WALLED AIR CHAMBER THEREIN ADAPTED TO BE COLLAPSED BY FLEXING SAID BULB AND COMMUNICATING WITH THE INTERIOR OF SAID HOLLOW STEM, AND A VALVE POSITIONED FOR CLOSING THE COMMUNICATION BETWEEN SAID HOLLOW STEM AND SAID BULB CHAMBER, SAID VALVE BEING ADAPTED FOR MOVEMENT TO OPEN POSITION BY FLEXING SAID BULB TO COLLAPSE SAID CHAMBER AND MEANS FOR OPPOSING RETURN MOVEMENT OF SAID VALVE TO SAID CLOSED POSITION THEREOF SUCH THAT THE BULB MAY THEREAFTER BE OPERATED TO ALTERNATELY DRAW LIQUID INTO SAID HOLLOW STEM AND TO EXPEL THE SAME THEREFROM IN RESPONSE TO EXPANSION AND COLLAPSE OF THE BULB CHAMBER.
References Cited (Backward Citations)
US1878026A
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US2081253A
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US2083156A
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US2255833A
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US3037672A
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |