Patent US3604562A successfully refreshed from Google Patents.
US3604562A
Expired / Lapsed
US
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Dispensing package
Assignee: Amicon Corp
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Filing: 1969-06-24
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Granted: 1971-09-14
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Expires: 1989-06-24
Abstract
Abstract In a dispensing container for use in dispensing packaged articles wherein a biasing means is used to push the packaged articles towards an outlet therefrom, the particular improvement whereby a compressed polymeric foam is used as a biasing means, thereby providing a biasing force that remains more uniform with time as the package is emptied of articles and also avoids locally high pressures bearing on the packaged articles.
Inventors
- 👤 Herbert H Loeffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:40
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/08; B65D83/0805; B65D83/0811; B65D83/0817
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A dispensing package comprising a container having an opening, a stack disposed within said container opposing said opening, said stack including articles having dimensions smaller than said opening and arranged to pass through said opening and divider sheets interposed between adjacent articles in said stack, said divider sheets having dimensions greater than said opening the limitation, ''''and being constructed of a light and flimsy sheet material,'''' and a resilient foam biasing means within said container in position to force said stack toward said opening with a marginal portion of the end divider sheet engaged by the margin of said opening.
Claim 2
Dependent Claim
100 words
A dispensing package comprising a container having an opening, a stack disposed within said container opposing said opening, said stack including articles having dimensions smaller than said opening and arranged to pass through said opening and divider sheets interposed between adjacent articles in said stack, said divider sheets having dimensions greater than said opening the limitation, ''''and being constructed of a light and flimsy sheet material,'''' and a resilient foam biasing means within said container in position to force said stack toward said opening with a marginal portion of the end divider sheet engaged by the margin of said opening.
Claim 3
Dependent Claim
38 words
A dispensing package as claimed in claim 1 wherein Each divider sheet has a marginally projecting tab and said opening includes a tab cutout in registration with said tab to permit said tab to pass through said opening.
Claim 4
Dependent Claim
23 words
A dispensing package as claimed in claim 1 in which said articles are membranes of the type used in ultrafiltration or reverse osmosis.
Claim 5
Dependent Claim
27 words
A dispensing package as claimed in claim 1 in which said foam biasing means includes holes cut in it to achieve optimum distribution of said biasing force.
Claim 6
Dependent Claim
23 words
A dispensing package as claimed in claim 1 in which a piston board is interposed between said stack and said foam biasing means.
References Cited (Backward Citations)
US3248156A
Cited
US3403815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |