Patent US4818544A successfully refreshed from Google Patents.
US4818544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beverage packages
Assignee: Wrigley Candy UK
•
Filing: 1987-05-26
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Granted: 1989-04-04
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Expires: 2007-05-26
Abstract
Abstract A beverage sachet has improved base seam opening performance by the provision of sealed lands extending inwardly from the side seams to reduce the tendency of curling of the base seams in use.
Inventors
- 👤 Barry Seward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:47
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/804; B65D85/8043; Y; Y10; Y10S; Y10S383/00; Y10S383/904
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A generally planar sealed beverage sachet formed of a substantially air- and water-impermeable flexible sheet material, said sheet material enclosing and being attached to a web of water permeable material which supports a product which provides a beverage when mixed with an aqueous medium, the sachet being provided with a locating means at one end thereof for an aqueous medium introducing means, a frangible base seam comprising a pressure- or heat-sensitive seal at the opposite end, and a pair of side seams each of which includes, adjacent the base seam, a sealed land, said lands extending inwardly towards one another across the generally planar surface of the sachet, said lands being configured and oriented within said sachet sufficient to reduce upward curling of the base seam when aqueous medium is introduced and said base seam opens when said sachet is used.
Claim 2
Dependent Claim
141 words
A generally planar sealed beverage sachet formed of a substantially air- and water-impermeable flexible sheet material, said sheet material enclosing and being attached to a web of water permeable material which supports a product which provides a beverage when mixed with an aqueous medium, the sachet being provided with a locating means at one end thereof for an aqueous medium introducing means, a frangible base seam comprising a pressure- or heat-sensitive seal at the opposite end, and a pair of side seams each of which includes, adjacent the base seam, a sealed land, said lands extending inwardly towards one another across the generally planar surface of the sachet, said lands being configured and oriented within said sachet sufficient to reduce upward curling of the base seam when aqueous medium is introduced and said base seam opens when said sachet is used.
Claim 3
Dependent Claim
40 words
A sachet according to claim 1 wherein the side seams taper inwardly towards the base seam of the sachet, each land being disposed at the top of the taper and extending inwardly to approximately the same extent as the taper.
Claim 4
Dependent Claim
20 words
A sachet according to claims 1 or 2 wherein the locating means comprises a plastic nozzle attached to the sachet.
Claim 5
Dependent Claim
25 words
A sachet according to claims 1 or 2 wherein the product is ground coffee or leaf tea and the web material forms a filter therefor.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |