US5207509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichamber bag
Assignee: FRENSENIUS AG
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Filing: 1992-03-05
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Granted: 1993-05-04
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Expires: 2012-03-05
Abstract
Abstract The invention relates to a multichamber bag (1), the bag chambers (2, 3) of which are separated via a separating means (4), the squeeze-off means (5) of which temporarily separates the bag contents. To avoid being restricted to specific sheet types in the use of the material for the multichamber bag, in the region of the subsequent mixing opening an elastic sheet strip is arranged which serves as seal on actuation of the squeeze-off means (5).
Inventors
- 👤 Reinhold Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:26
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; B65D81/3266
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A package for separately storing and subsequently mixing a plurality of ingredients comprising a) a multichamber bag having a plurality of bag chambers, each of said chambers having first and second opposed bag walls of flexible material joined to each other by a seam around the periphery of said bag and b) openable separating means to define the bag chambers within said bag comprising i) a strip of elastic sheeting arranged between said first and said second bag walls and ii) an external clamping means to fit over said bag walls proximate the location of said strip, whereby the deformation of said strip by application of said clamping means temporarily seals the thus formed chambers from each other.
Claim 2
Dependent Claim
118 words
A package for separately storing and subsequently mixing a plurality of ingredients comprising a) a multichamber bag having a plurality of bag chambers, each of said chambers having first and second opposed bag walls of flexible material joined to each other by a seam around the periphery of said bag and b) openable separating means to define the bag chambers within said bag comprising i) a strip of elastic sheeting arranged between said first and said second bag walls and ii) an external clamping means to fit over said bag walls proximate the location of said strip, whereby the deformation of said strip by application of said clamping means temporarily seals the thus formed chambers from each other.
Claim 3
Dependent Claim
66 words
The package of claim 1 wherein said openable separating means further comprises an internal partial seam having two ends, partially separating said bag chambers from each other, one end of said internal seam being sealably joined to said peripheral seam, said elastic strip being joined at one end thereof to the remaining end of said internal seam and the other end thereof to said peripheral seam.
Claim 4
Dependent Claim
17 words
The package of claim 1 wherein said elastic strip is welded or sealed to said internal seam.
Claim 5
Dependent Claim
14 words
The package of claim 1 wherein the elastic strip comprises of ethyl vinyl acetate.
Claim 6
Dependent Claim
21 words
The package of claim 1 wherein said package has been subjected to ionizing radiation whereby the said elastic strip became crosslinked.
Claim 7
Dependent Claim
26 words
The package of claim 1 wherein the bag walls are made of a material selected from the group consisting of polyethylene sheets and sheets containing polyethylene.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |