US4434904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottle closure
Assignee: Baxter International Inc
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Filing: 1982-06-01
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Granted: 1984-03-06
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Expires: 2002-06-01
Abstract
Abstract A plastic container and a three-piece closure system therefor are disclosed. The container has a threaded neck defining a dispensing outlet. A separate closure covers the dispensing outlet and is heat-sealed to the threaded neck, forming a frangible section which may be broken to remove the closure. An internally threaded jacking ring is threadedly received on the neck, and includes a plurality of inwardly directed flexible fingers, which snap into an annular groove in the closure when the jacking ring is threaded onto the neck. To break the frangible portion and open the container, the jacking ring is rotated in the direction to remove it, so that the jacking ring fingers press against the top edge of the recess in the closure and actually pry the closure away from the container neck.
Inventors
- 👤 Richard D'Amico
- 👤 Thomas A. Fowles
- 👤 David A. Winchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:53
CPC Classifications
B; B65; B65D; B65D55/00; B65D55/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A three-piece quick-opening and reclosable container and closure system comprising: a one-piece plastic container including an externally threaded neck portion defining a dispensing outlet, and an annular outwardly extending sealing surface above said threaded portion: a separately formed plastic closure member covering said dispensing outlet and peripherally heat sealed to said neck portion along said sealing surface to define a frangible section therebetween, said closure member having a peripheral recess defined by a reduced diameter portion; and a separately formed internally threaded jacking ring threadedly engaged on said neck, said jacking ring having a plurality of radially inwardly directed flexible fingers adapted to snap into said recess upon screw attachment of said jacking ring to said container neck portion, and to break said frangible section by prying said closure member off when said jacking ring is removed by unscrewing from said container neck portion, the extension of said fingers into said recess retaining said closure member in association with said jacking ring whereby upon reattachment of said jacking ring to said container, said closure member closes said dispensing outlet.
Claim 2
Dependent Claim
179 words
A three-piece quick-opening and reclosable container and closure system comprising: a one-piece plastic container including an externally threaded neck portion defining a dispensing outlet, and an annular outwardly extending sealing surface above said threaded portion: a separately formed plastic closure member covering said dispensing outlet and peripherally heat sealed to said neck portion along said sealing surface to define a frangible section therebetween, said closure member having a peripheral recess defined by a reduced diameter portion; and a separately formed internally threaded jacking ring threadedly engaged on said neck, said jacking ring having a plurality of radially inwardly directed flexible fingers adapted to snap into said recess upon screw attachment of said jacking ring to said container neck portion, and to break said frangible section by prying said closure member off when said jacking ring is removed by unscrewing from said container neck portion, the extension of said fingers into said recess retaining said closure member in association with said jacking ring whereby upon reattachment of said jacking ring to said container, said closure member closes said dispensing outlet.
Claim 3
Dependent Claim
50 words
A container in accordance with claim 1, said container further comprises an outwardly extending abutment surface below said threaded neck portion and wherein one of said jacking ring and said abutment surface includes an annular gasket to provide a seal therebetween when said jacking ring is threaded onto said neck.
Claim 4
Dependent Claim
20 words
A container in accordance with claim 1 wherein said jacking ring has a top wall to enclose said closure completely.
Claim 5
Dependent Claim
39 words
A container in accordance with claim 1 wherein said neck portion defines a beveled pouring lip around said dispensing outlet and said closure comprises an annular internal seal adapted to engage said lip when said closure covers said outlet.
Claim 6
Dependent Claim
50 words
A container in accordance with claim 4, wherein said peripheral recess on said closure includes an upwardly facing surface engageable by said fingers when said jacking ring is threaded onto said container to draw said internal seal into engagement with said pouring lip upon resealing of said container after opening.
References Cited (Backward Citations)
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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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |