Patent US3823840A successfully refreshed from Google Patents.
US3823840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prepunctured closure
Assignee: Silver Industries Inc
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Filing: 1972-08-04
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Granted: 1974-07-16
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Expires: 1992-08-04
Abstract
Abstract A closure is provided which consists of three parts and is particularly usable with a container of the type having an open top. The three components are (1) a flat elastomeric member closing the open top, (2) a flexible impermeable and tearable barrier layer, and (3) a cap overlying the barrier and the flat member to seal the combination to the container. An arcuate slit is provided in the flat member, the slit being substantially resealed by the elastomeric properties of the seal member. However, the slit permits the insertion therethrough of a plastic canula so that a dosage may be removed without substantial exposure of the contents of the container to contamination.
Inventors
- 👤 E Zackheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A closure adapted to be used in combination with a multipledosage container holding a medicament, said container including bottom and side walls and an open top, said closure comprising: an elastomeric member closing off the open top of the container; a flexible, impermeable and tearable barrier layer overlying the member; a cap positioned over said barrier layer and the member and fixed in place about the open top of the container whereby said member and layer act as a seal over the open top; a preformed thin slit opening extending through the member and resealed by the elastomeric properties of the member; a removeable tear tab in said cap adapted to be removed to expose the barrier layer, whereby at least a portion of the layer may be removed and the preformed slit exposed, so that a plastic canula may be inserted therethrough to remove a dose of the medicament held in the container without substantial exposure of the contents of the container to contamination.
Claim 2
Dependent Claim
165 words
A closure adapted to be used in combination with a multipledosage container holding a medicament, said container including bottom and side walls and an open top, said closure comprising: an elastomeric member closing off the open top of the container; a flexible, impermeable and tearable barrier layer overlying the member; a cap positioned over said barrier layer and the member and fixed in place about the open top of the container whereby said member and layer act as a seal over the open top; a preformed thin slit opening extending through the member and resealed by the elastomeric properties of the member; a removeable tear tab in said cap adapted to be removed to expose the barrier layer, whereby at least a portion of the layer may be removed and the preformed slit exposed, so that a plastic canula may be inserted therethrough to remove a dose of the medicament held in the container without substantial exposure of the contents of the container to contamination.
Claim 3
Dependent Claim
14 words
A closure as defined in claim 1 wherein the slit has an arcuate shape.
Claim 4
Dependent Claim
14 words
A closure as defined in claim 1 wherein the slit has a semi-circular extent.
Claim 5
Dependent Claim
20 words
A closure as defined in claim 1 wherein the barrier layer has at least the extent of the seal member.
Claim 6
Dependent Claim
27 words
A closure as defined in claim 1 wherein the container has a bead ring about its open top and the cap is crimped about the bead ring.
References Cited (Backward Citations)
US3013687A
Cited
US3424329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |