US3587670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampler and pumping system
Assignee: Brailsford and Co Inc
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Filing: 1967-12-08
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Granted: 1971-06-28
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Expires: 1987-12-08
Abstract
Abstract A SYSTEM TO TRANSFER FLUID FROM A SOURCE TO ONE OR MORE CONTAINERS WITHOUT THE FLUID COMING INTO CONTACT WITH ANY OF THE MOVABLE MEMBERS PUMPING IT SUCH AS VALVES, PISTONS AND THE LIKE. IT INCLUDES A CLOSED HOLLOW CHAMBER, A VACUUM PUMP TO EVACUATE THE CHAMBER, A FLOAT ACTUATED SWITCH IN THE CHAMBER TO TURN THE PUMP ON AND OFF DEPENDING ON THE LEVEL OF THE FLUID IN THE CHAMBER AND ONE OR MORE CONTAINERS TO RECEIVE AND STORAGE THE FLUID. A CONNECTING TUBE EXTENDS FROM THE BOTTOM OF THE CHAMBER TO THE CONTAINERS AND ANOTHER TUBE EXTENDS FROM THE CHAMBER TO THE FLUID SOURCE.
Inventors
- 👤 Harrison D Brailsford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |