US4616760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Port and closure assembly for a container
Assignee: Baxter International Inc
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Filing: 1985-01-30
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Granted: 1986-10-14
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Expires: 2005-01-30
Abstract
Abstract A port and closure for a container is provided. The closure includes an interface layer for bonding the closure to the port. The bond strength of the interface layer to the closure is less than the bond strength of the interface layer to the port. The closure being removed from the port by delaminating the interface layer from the port.
Inventors
- 👤 Jean Kersten
- 👤 Jean M. Mathias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/10; B; B65; B65D; B65D41/00; B65D41/62
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
146 words
A port and closure assembly for a container comprising: a port having a neck portion; a closure for sealing the port having a cup shaped construction and including a body member having a top portion and sidewalls, and a rim member, the cross-sectional width of the top portion being greater than the cross-sectional width of the sidewalls and the rim member having a bonded thereto an interface layer, the interface layer being bonded to the neck portion of the port when the closure seals the port; and the bond strength of the interface layer to the rim member of the closure being less than the bond strength of the interface layer to the neck portion of the port so that when the sidewalls are compressed together the interface layer delaminates from the rim member of the port and the closure may be removed from the port.
Claim 2
Dependent Claim
146 words
A port and closure assembly for a container comprising: a port having a neck portion; a closure for sealing the port having a cup shaped construction and including a body member having a top portion and sidewalls, and a rim member, the cross-sectional width of the top portion being greater than the cross-sectional width of the sidewalls and the rim member having a bonded thereto an interface layer, the interface layer being bonded to the neck portion of the port when the closure seals the port; and the bond strength of the interface layer to the rim member of the closure being less than the bond strength of the interface layer to the neck portion of the port so that when the sidewalls are compressed together the interface layer delaminates from the rim member of the port and the closure may be removed from the port.
Claim 3
Dependent Claim
38 words
The port and closure assembly of claim 1 wherein: the interface layer and neck of the port are constructed from a thermoplastic material; and the body member and rim member of the closure are constructed from a polyamide.
Claim 4
Dependent Claim
22 words
The port and closure assembly of claim 1 wherein the interface layer is bonded to the rim member by a polyurethane adhesive.
Claim 5
Dependent Claim
44 words
The port and closure assembly of claim 1 wherein: the body member and rim member of the closure are constructed from a polyamide; and the interface layer and port are constructed from a material selected from the group consisting of polyethylene or polyvinyl chloride.
Claim 6
Dependent Claim
13 words
The port and closure assembly of claim 1 wherein the closure is thermoformed.
Claim 7
Dependent Claim
122 words
A port and closure assembly for a container comprising: a port; a closure having a body member and an interface layer, the body having sidewalls and a top portion, the interface layer being bonded to the body member by a tie layer and sealed to the port when the closure seals the port; and the cross-sectional width of the top portion being greater than the cross-sectional width of the sidewalls and the bond strength of the interface layer to the body member being sufficiently less than the bond strength of the interface layer to the port so that the interface layer will delaminate from the body member and allow the closure to be removed from the port upon application of sufficient force.
Claim 8
Dependent Claim
122 words
A port and closure assembly for a container comprising: a port; a closure having a body member and an interface layer, the body having sidewalls and a top portion, the interface layer being bonded to the body member by a tie layer and sealed to the port when the closure seals the port; and the cross-sectional width of the top portion being greater than the cross-sectional width of the sidewalls and the bond strength of the interface layer to the body member being sufficiently less than the bond strength of the interface layer to the port so that the interface layer will delaminate from the body member and allow the closure to be removed from the port upon application of sufficient force.
Claim 9
Dependent Claim
33 words
The port and closure of claim 6 wherein: the body member is constructed from polyamide; the tie layer is constructed from polyurethane; and the interface layer and port are constructed from a thermoplastic.
Claim 10
Dependent Claim
27 words
The port and closure of claim 7 wherein: the interface layer and port constructed from a material selected from the group consisting of polyethylene or polyvinyl chloride.
Claim 11
Dependent Claim
17 words
The port and closure of claim 7 wherein the interface layer and port are heat sealed together.
Claim 12
Dependent Claim
19 words
The port and closure of claim 7 wherein the interface layer and port are constructed from the same material.
Claim 13
Dependent Claim
14 words
The port and closure of claim 6 wherein the closure hermetically seals the port.
Claim 14
Dependent Claim
21 words
The port and closure of claim 6 wherein the body member of the closure is constructed from a steam permeable material.
References Cited (Backward Citations)
US3272422A
Cited
US3501042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |