US3343682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee filter element
Assignee: STAR FILTER CO
•
Filing: 1966-10-19
•
Granted: 1967-09-26
•
Expires: 1986-10-19
Abstract
No abstract record available.
Inventors
- 👤 Harvith Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:58
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/4403; A47J31/446
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A FILTER ELEMENT USEFUL IN COMBINATION WITH THE GROUND COFFEE HOLDING BASKET OF COFFEE MAKING APPARATUS INCLUDING COFFEE PERCOLATORS HAVING A TUBULAR SECTION EXTENDING THROUGH THE BASKET AND COFFEE DRIPULATORS WHICH DO NOT HAVE A TUBULAR SECTION EXTENDING THROUGH THE BASKET, SAID FILTER ELEMENT COMPRISING: (A) A PLANAR SECTION OF A FLUID PERVIOUS MATERIAL HAVING A PERIMETER CORRESPONDING TO THE LOWER PORTION OF THE GROUND COFFEE HOLDING BASKET; AND (B) A CENTRALLY FORMED INCISION PROVIDED IN SAID PLANAR SECTION, SAID INCISION HAVING AN ARCUATE CONFIGURATION WITH A DIAMETER GENERALLY CORRESPONDING TO THE DIAMETER OF THE TUBULAR SECTION, SO THAT SAID FILTER ELEMENT MAY BE LAID ON THE BOTTOM OF A COFFEE DRIPULATOR BASKET TO SUBSTANTIALLY COVER THE ENTIRE AREA THEREOF, AND MAY ALSO BE LAID IN A COFFEE PERCOLATOR WITH THE TUBULAR SECTION EXTENDING THROUGH THE ARCUATE INCISION SO THAT THE EDGES OF THE INCISION INTIMATELY CONTACT THE OUTER SURFACE OF THE TUBULAR SECTION.
Claim 2
Dependent Claim
154 words
A FILTER ELEMENT USEFUL IN COMBINATION WITH THE GROUND COFFEE HOLDING BASKET OF COFFEE MAKING APPARATUS INCLUDING COFFEE PERCOLATORS HAVING A TUBULAR SECTION EXTENDING THROUGH THE BASKET AND COFFEE DRIPULATORS WHICH DO NOT HAVE A TUBULAR SECTION EXTENDING THROUGH THE BASKET, SAID FILTER ELEMENT COMPRISING: (A) A PLANAR SECTION OF A FLUID PERVIOUS MATERIAL HAVING A PERIMETER CORRESPONDING TO THE LOWER PORTION OF THE GROUND COFFEE HOLDING BASKET; AND (B) A CENTRALLY FORMED INCISION PROVIDED IN SAID PLANAR SECTION, SAID INCISION HAVING AN ARCUATE CONFIGURATION WITH A DIAMETER GENERALLY CORRESPONDING TO THE DIAMETER OF THE TUBULAR SECTION, SO THAT SAID FILTER ELEMENT MAY BE LAID ON THE BOTTOM OF A COFFEE DRIPULATOR BASKET TO SUBSTANTIALLY COVER THE ENTIRE AREA THEREOF, AND MAY ALSO BE LAID IN A COFFEE PERCOLATOR WITH THE TUBULAR SECTION EXTENDING THROUGH THE ARCUATE INCISION SO THAT THE EDGES OF THE INCISION INTIMATELY CONTACT THE OUTER SURFACE OF THE TUBULAR SECTION.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |