US4818544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beverage packages
Assignee: Wrigley Candy UK
•
Filing: 1987-05-26
•
Granted: 1989-04-04
•
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
2026-10-24 11:03
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.
References Cited (Backward Citations)
US2137243A
Cited
US2328018A
Cited
US2292101A
Cited
US2652336A
Cited
US2687158A
Cited
US2905075A
Cited
US2783704A
Cited
US2756154A
Cited
US2778739A
Cited
US3087491A
Cited
US2935929A
Cited
US2968560A
Cited
US3083101A
Cited
US3030874A
Cited
US3244586A
Cited
US3165114A
Cited
US3199437A
Cited
US3292527A
Cited
US3372634A
Cited
US3344734A
Cited
US3352226A
Cited
US3387553A
Cited
US3347151A
Cited
US3499578A
Cited
US3346388A
Cited
US3483812A
Cited
US3615708A
Cited
DE1947146A1
Cited
GB1180059A
Cited
US3554256A
Cited
US3589272A
Cited
US3607297A
Cited
US3647386A
Cited
US3812273A
Cited
US3833409A
Cited
DE2258462A1
Cited
DE2264208A1
Cited
FR2228374A5
Cited
US3935318A
Cited
US3963026A
Cited
DE2500131A1
Cited
US3928045A
Cited
US4007674A
Cited
US4046276A
Cited
US4126167A
Cited
US4136202A
Cited
US4257535A
Cited
US4399158A
Cited
US4278691A
Cited
US4410550A
Cited
US4415085A
Cited
GB2121762A
Cited
JPH08300611A
Cited
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 |