Concavo-convex siphoning pump
Abstract
Abstract A SIPHONING PUMP HAVING A SEMISPHERICAL RIGID PLASTIC CUP WITH A CIRCULAR EXTERIOR FLANGE AT ITS OPEN END. A NIPPLE ON THE CUP EXTENDS EXTERIORLY AND A FLEXIBLE HOSE HAS ONE END ATTACHED THERETO. A CONCAVO-CONVEX RUBBER DIAPHRAGM HAS A MARGINAL EDGE PORTION ATTACHED TO THE FLANGE AND THE CONCAVO-CONVEX BODY PORTION EXTENDS INTO THE CUP WITH ITS CONVEX BOTTOM SIDE DEPENDING INTO THE UPPER PORTION OF THE CUP AND THE CONCAVE SIDE FACING OUTWARDLY. THE CENTRAL PORTION OF THE CONCAVE SIDE HAS A VERTICALLY ELONGATED NIPPLELIKE FINGERGRIPPING PULL TO BE BODILY LIFTED UP WITH THE FINGERS TO INVERT THE DIAPHRAGM, AND THEN RELEASED TO PERMIT THE DIAPHRAGM TO BE RETURNED TO ITS NORMAL STARTING POSITION WITHIN THE CONFINES OF THE CUP. THE HOSE HAS A LENGTH TO PERMIT A CONTAINER TO BE PLACED ON THE GROUND AT A LEVEL BELOW THE LEVEL OF A TANK FROM WHICH LIQUID IS TO BE SIPHONED. A SOCKET AND GROOVE ARE FORMED IN THE DIAPHRAGM AT THE MARGINAL EDGE PORTION.
Inventors
- 👤 Juan Alberto Morales
Bibliographic Details
Claims Analysis
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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) | 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 |