US3223296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid handling devices
Assignee: Waddington and Duval Holdings Ltd
•
Filing: 1963-06-17
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Granted: 1965-12-14
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Waddington Rogor Strange
- 👤 Duval Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:01
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/061; B65D47/20; B65D47/26; B65D47/261; B65D47/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A DEVICE FOR WITHDRAWING A LIQUID FROM A CLOSED CONTAINER WHICH DEVICES COMPRISES A BARREL FORMED WITH A LIQUID ENTRANCE AND AN EXIT APERTURE MUTUALLY SPACED APART ALONG ONE SIDE THEREOF AND WITH AN AIR EXIT ON THE OPPOSITE SIDE THEREOF, AND WITHIN THE BARREL A HOLLOW ROTARY VALVE MEMBER FORMED ALONG ONE SIDE THEREOF WITH A LIQUID ENTRY PORT, A LIQUID EXIT PORT AND AN AIR ENTRY PORT, THE LIQUID ENTRY PORT BEING POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE LIQUID ENTRANCE, AND THE LIQUID EXIT PORT AND THE AIR ENTRY PORT BEING POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE EXIT APERTURE, AND ALONG THE OPPOSITE SIDE THEREOF WITH A AIR EXIT PORT POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE AIR EXIT AND WITH A LIQUID FILLING APERTURE POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE LIQUID ENTRANCE, AN AIR CHAMBER WITHIN THE ROTARY VALVE MEMBER COMMUNICATING BETWEEN THE AIR ENTRY PORT AND THE AIR EXIT PORT, SAID EXIT APERTURE AND SAID LIQUID EXIT PORT BEING CIRCUMFERENTIALLY WIDER THAN SAID LIQUID ENTRANCE AND SAID LIQUID ENTRY PORT, ROTATION OF THE VALVE MEMBER WITHIN THE BARREL GIVING FIRSTLY A POSI-
Claim 2
Independent Claim
209 words
A DEVICE FOR WITHDRAWING A LIQUID FROM A CLOSED CONTAINER WHICH DEVICES COMPRISES A BARREL FORMED WITH A LIQUID ENTRANCE AND AN EXIT APERTURE MUTUALLY SPACED APART ALONG ONE SIDE THEREOF AND WITH AN AIR EXIT ON THE OPPOSITE SIDE THEREOF, AND WITHIN THE BARREL A HOLLOW ROTARY VALVE MEMBER FORMED ALONG ONE SIDE THEREOF WITH A LIQUID ENTRY PORT, A LIQUID EXIT PORT AND AN AIR ENTRY PORT, THE LIQUID ENTRY PORT BEING POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE LIQUID ENTRANCE, AND THE LIQUID EXIT PORT AND THE AIR ENTRY PORT BEING POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE EXIT APERTURE, AND ALONG THE OPPOSITE SIDE THEREOF WITH A AIR EXIT PORT POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE AIR EXIT AND WITH A LIQUID FILLING APERTURE POSITIONED TO CORRESPOND IN THE AXIAL DIRECTION OF THE BARREL WITH THE LIQUID ENTRANCE, AN AIR CHAMBER WITHIN THE ROTARY VALVE MEMBER COMMUNICATING BETWEEN THE AIR ENTRY PORT AND THE AIR EXIT PORT, SAID EXIT APERTURE AND SAID LIQUID EXIT PORT BEING CIRCUMFERENTIALLY WIDER THAN SAID LIQUID ENTRANCE AND SAID LIQUID ENTRY PORT, ROTATION OF THE VALVE MEMBER WITHIN THE BARREL GIVING FIRSTLY A POSI-
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |