US3809215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infusion package
Assignee: Tetley Inc
•
Filing: 1972-02-07
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Granted: 1974-05-07
•
Expires: 1992-02-07
Abstract
Abstract Providing an infusion package, such as a tea bag, with means for holding the bag in a horizontal floating position during steeping results in a more rapid quiescent extraction without mixing or dunking of the bag, and in a greater yield of extract over a given period of time than is otherwise attainable with conventional tea bags.
Inventors
- 👤 R Dobry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/804; B65D85/808; B65D85/812
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A generally horizontally disposed flat beverage infusion package containing a quantity of material adapted to be immersed into an extracting liquid for extraction of said material comprising light-weight flotation means fastened to the upper surface of said infusion package, said flotation means being dimensioned and disposed along said upper surface so as to maintain said package, and with the material to be extracted therefrom disposed in a uniform layer parallel to the surface of the extracting liquid in a horizontal floating position at about or near the upper surface of said liquid.
Claim 2
Dependent Claim
92 words
A generally horizontally disposed flat beverage infusion package containing a quantity of material adapted to be immersed into an extracting liquid for extraction of said material comprising light-weight flotation means fastened to the upper surface of said infusion package, said flotation means being dimensioned and disposed along said upper surface so as to maintain said package, and with the material to be extracted therefrom disposed in a uniform layer parallel to the surface of the extracting liquid in a horizontal floating position at about or near the upper surface of said liquid.
Claim 3
Dependent Claim
36 words
An infusion pacKage as claimed in claim 1, said flotation means comprising a pair of spaced substantially rigid members being each fastened to said upper package surface so as to extend along two opposite edges thereof.
Claim 4
Dependent Claim
29 words
An infusion package as claimed in claim 1, said flotation means comprising an elongate substantially rigid member fastened to said upper package surface so as to extend centrally thereof.
Claim 5
Dependent Claim
35 words
An infusion package as claimed in claim 3, said flotation member having widening end portions extending along the opposite edges of said upper package surface and being of generally I-shaped configuration in a horizontal plane.
Claim 6
Dependent Claim
19 words
An infusion package as claimed in claim 1, said flotation means being formed of a substantially closed cell foam.
Claim 7
Dependent Claim
33 words
An infusion package as claimed in claim 1, said flotation means comprising an elongate sealed flexible chamber containing a gas, said chamber being fastened to the package upper surface and extending centrally thereof.
References Cited (Backward Citations)
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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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |