US3229864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve with resilient movable element and dispensing pump embodying the same
Assignee: Individual
•
Filing: 1964-11-30
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Granted: 1966-01-18
•
Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Roder Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:14
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1202; A47K5/1204; A47K5/1205; B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7904; Y10T137/7908; Y10T137/7909
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A VALVE FOR PUMPS HAVING A PISTON RECIPROCABLE WITHIN A CYLINDER FOR DISCHARGING SMALL AMOUNTS OF FLUID FROM A CONTAINER, CHARACTERIZED IN THAT A MOVABLE VALVE ELEMENT FORMED OF RESILIENT MATERIAL IS PROVIDED, SAID ELEMENT HAVING THE SPAPE OF A HOLLOW TRUNCATED CONE OPEN AT ITS LARGER BASE, AND A WALL TAPERING CONVERGENTLY TOWARDS THE OPEN BASE, AND A COOPERATING VALVE SEAT HAVING A CORRESPONDINGLY DIRECTED CONICAL SURFACE THE APEX ANGLE OF WHICH IS SMALLER THAN THAT OF THE VALVE ELEMENT.
Claim 2
Dependent Claim
81 words
A VALVE FOR PUMPS HAVING A PISTON RECIPROCABLE WITHIN A CYLINDER FOR DISCHARGING SMALL AMOUNTS OF FLUID FROM A CONTAINER, CHARACTERIZED IN THAT A MOVABLE VALVE ELEMENT FORMED OF RESILIENT MATERIAL IS PROVIDED, SAID ELEMENT HAVING THE SPAPE OF A HOLLOW TRUNCATED CONE OPEN AT ITS LARGER BASE, AND A WALL TAPERING CONVERGENTLY TOWARDS THE OPEN BASE, AND A COOPERATING VALVE SEAT HAVING A CORRESPONDINGLY DIRECTED CONICAL SURFACE THE APEX ANGLE OF WHICH IS SMALLER THAN THAT OF THE VALVE ELEMENT.
Claim 3
Dependent Claim
175 words
A DISPENSING PUMP, COMPRISING: A CLOSURE MEMBER FOR A CONTAINER FROM WHICH A FLUID IS TO BE DISPENSED; A PUMP CYLINDER MOUNTED IN SAID CLOSURE MEMBER; A PISTON VERTICALLY RECIPROCABLE WITHIN SAID CYLINDER; A FIRST VALVE SEAT AT THE TOP OF SAID PISTON; A SECOND VALVE SEAT AT THE BOTTOM OF SAID CYLINDER; A SEPARATE MOVABLE VALVE ELEMENT COOPERATING WITH EACH OF SAID VALVE SEATS, EACH ELEMENT BEING SHAPED AS A HOLLOW TRUNCATED CONE OPEN AT ITS LARGER BASE WITH A WALL WHICH TAPERS CONVERGENTLY TOWARD SAID OPEN BASE, EACH OF SAID VALVE SEATS HAVING A CORRESPONDINGLY DIRECTED CONICAL SURFACE FOR ENGAGEMENT BY ITS ASSOCIATED ELEMENT, THE APEX ANGLE OF EACH CONICAL SURFACE BEING SMALLER THAN THE APEX ANGLE OF ITS ASSOCIATED ELEMENT; MEANS FOR LIMITING MOVEMENT OF EACH ELEMENT OUTWARDLY OF ITS ASSOCIATED SEAT; A DISCHARGE PASSAGE COMMUNICATING WITH THE LARGER END OF THE CONICAL SURFACE OF SAID FIRST VALVE SEAT; AND A SUCTION DUCT FOR IMMERSION IN SAID FLUID COMMUNICATING WITH THE SMALLER END OF THE CONICAL SURFACE OF SAID SECOND VALVE SEAT.
Claim 4
Dependent Claim
175 words
A DISPENSING PUMP, COMPRISING: A CLOSURE MEMBER FOR A CONTAINER FROM WHICH A FLUID IS TO BE DISPENSED; A PUMP CYLINDER MOUNTED IN SAID CLOSURE MEMBER; A PISTON VERTICALLY RECIPROCABLE WITHIN SAID CYLINDER; A FIRST VALVE SEAT AT THE TOP OF SAID PISTON; A SECOND VALVE SEAT AT THE BOTTOM OF SAID CYLINDER; A SEPARATE MOVABLE VALVE ELEMENT COOPERATING WITH EACH OF SAID VALVE SEATS, EACH ELEMENT BEING SHAPED AS A HOLLOW TRUNCATED CONE OPEN AT ITS LARGER BASE WITH A WALL WHICH TAPERS CONVERGENTLY TOWARD SAID OPEN BASE, EACH OF SAID VALVE SEATS HAVING A CORRESPONDINGLY DIRECTED CONICAL SURFACE FOR ENGAGEMENT BY ITS ASSOCIATED ELEMENT, THE APEX ANGLE OF EACH CONICAL SURFACE BEING SMALLER THAN THE APEX ANGLE OF ITS ASSOCIATED ELEMENT; MEANS FOR LIMITING MOVEMENT OF EACH ELEMENT OUTWARDLY OF ITS ASSOCIATED SEAT; A DISCHARGE PASSAGE COMMUNICATING WITH THE LARGER END OF THE CONICAL SURFACE OF SAID FIRST VALVE SEAT; AND A SUCTION DUCT FOR IMMERSION IN SAID FLUID COMMUNICATING WITH THE SMALLER END OF THE CONICAL SURFACE OF SAID SECOND VALVE SEAT.
References Cited (Backward Citations)
US2362080A
Cited
US2657834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |