Patent US3137228A successfully refreshed from Google Patents.
US3137228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee maker
Assignee: Individual
•
Filing: 1963-03-26
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Granted: 1964-06-16
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 David I Elow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:17
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/18; A47J31/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PLUNGER FOR A COFFEE MAKER, COMPRISING A PISTON HAVING A CENTRAL PLASTIC HUB PORTION AND A PISTON ROD ATTACHED TO SAID HUB PORTION AND EXTENDING THEREFROM, A PLASTIC RING SURROUNDING SAID HUB AND SPACED LATERALLY OUTWARDLY FROM SAID HUB, A SERIES OF SPACED PLASTIC SPOKES EXTENDING BETWEEN SAID HUB AND SAID RING AND INTERCONNECTING SAID HUB AND SAID RING TO FORM A SERIES OF SPACED OPENINGS, AND WIRE MESH SCREEN MEANS POSITIONED IN SAID OPENINGS TO CLOSE THE LATTER AND EMBEDDED IN ADJACENT PORTIONS OF SAID PLASTIC HUB, SPOKE AND RING, SAID HUB PORTION, RING, SPOKES AND WIRE MESH SCREEN MEANS FORMING A UNITARY PISTON BY MOLDING OF SAID HUB PORTION, RING AND SPOKES TO SAID MESH SCREEN MEANS IN SITU.
Claim 2
Dependent Claim
122 words
A PLUNGER FOR A COFFEE MAKER, COMPRISING A PISTON HAVING A CENTRAL PLASTIC HUB PORTION AND A PISTON ROD ATTACHED TO SAID HUB PORTION AND EXTENDING THEREFROM, A PLASTIC RING SURROUNDING SAID HUB AND SPACED LATERALLY OUTWARDLY FROM SAID HUB, A SERIES OF SPACED PLASTIC SPOKES EXTENDING BETWEEN SAID HUB AND SAID RING AND INTERCONNECTING SAID HUB AND SAID RING TO FORM A SERIES OF SPACED OPENINGS, AND WIRE MESH SCREEN MEANS POSITIONED IN SAID OPENINGS TO CLOSE THE LATTER AND EMBEDDED IN ADJACENT PORTIONS OF SAID PLASTIC HUB, SPOKE AND RING, SAID HUB PORTION, RING, SPOKES AND WIRE MESH SCREEN MEANS FORMING A UNITARY PISTON BY MOLDING OF SAID HUB PORTION, RING AND SPOKES TO SAID MESH SCREEN MEANS IN SITU.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |