Patent US3314371A successfully refreshed from Google Patents.
US3314371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm pump
Assignee: St Barnabas Free Home Inc
•
Filing: 1965-09-22
•
Granted: 1967-04-18
•
Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Paul Oliver W Hopkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:24
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/021; F04B43/12; F04B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A DIAPHRAGM PUMP COMPRISING A BLOCK HAVING A PAIR OF FLUID PASSAGES EXTENDING THERETHROUGH AND EACH PROVIDED WITH AN ORIFICE AT THE SAME SIDE OF THE BLOCK, A GASKET ENGAGING SAID SIDE OF THE BLOCK AND PROVIDED WITH AN OPENING INTO WHICH SAID ORIFICES OPEN, SAID OPENING HAVING END PORTIONS SUBSTANTIALLY CONCENTRIC WITH SAID ORIFICES AND CONNECTED BY A NARROWER CENTRAL PORTION FORMING A PUMPING CHAMBER BETWEEN THE ORIFICES, ONE OF THE ORIFICES BEING AN INLET INTO SAID OPENING AND THE OTHER ORIFICE BEING AN OUTLET FROM IT, A FLEXIBLE DIAPHRAGM COVERING SAID OPENING AND SEALED AGAINST THE GASKET AROUND IT, A PIN COAXIAL WITH EACH ORIFICE AND ENGAGING THE OUTER SURFACE OF THE DIAPHRAGM, MEANS SUPPORTING THE PINS, THE PINS BEING SMALLER THAN SAID END PORTIONS OF THE GASKET OPENING, AND CONTINUOUSLY OPERATING MEANS FOR PERIODICALLY FORCING FIRST ONE PIN AND THEN THE OTHER INWARDLY TO PUSH THE ADJOINING PORTIONS OF THE DIAPHRAGM
Claim 2
Dependent Claim
154 words
A DIAPHRAGM PUMP COMPRISING A BLOCK HAVING A PAIR OF FLUID PASSAGES EXTENDING THERETHROUGH AND EACH PROVIDED WITH AN ORIFICE AT THE SAME SIDE OF THE BLOCK, A GASKET ENGAGING SAID SIDE OF THE BLOCK AND PROVIDED WITH AN OPENING INTO WHICH SAID ORIFICES OPEN, SAID OPENING HAVING END PORTIONS SUBSTANTIALLY CONCENTRIC WITH SAID ORIFICES AND CONNECTED BY A NARROWER CENTRAL PORTION FORMING A PUMPING CHAMBER BETWEEN THE ORIFICES, ONE OF THE ORIFICES BEING AN INLET INTO SAID OPENING AND THE OTHER ORIFICE BEING AN OUTLET FROM IT, A FLEXIBLE DIAPHRAGM COVERING SAID OPENING AND SEALED AGAINST THE GASKET AROUND IT, A PIN COAXIAL WITH EACH ORIFICE AND ENGAGING THE OUTER SURFACE OF THE DIAPHRAGM, MEANS SUPPORTING THE PINS, THE PINS BEING SMALLER THAN SAID END PORTIONS OF THE GASKET OPENING, AND CONTINUOUSLY OPERATING MEANS FOR PERIODICALLY FORCING FIRST ONE PIN AND THEN THE OTHER INWARDLY TO PUSH THE ADJOINING PORTIONS OF THE DIAPHRAGM
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |