US4429802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linerless closure cap
Assignee: Anchor Hocking Packaging Co
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Filing: 1982-05-28
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Granted: 1984-02-07
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Expires: 2002-05-28
Abstract
Abstract A one-piece molded closure cap having a cover and a depending skirt. There are container engaging means on the skirt for engaging cap engaging means on the container. There is a downwardly projecting sealing rim on the underside of the cap cover positioned for engaging the container rim. The sealing ring has a flared and curving radially inner corner sealing surface including an intermediate ring-like top scaling projection.
Inventors
- 👤 Walter J. Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:11
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0407; B65D41/0428; Y; Y10; Y10S; Y10S215/00; Y10S215/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
In a one-piece molded closure cap having a cover and a depending skirt with container engaging means on the skirt for engaging cap engaging means on the container rim finish below a closure engaging edge on the outside of the rim, the improvement comprising a circular sealing portion on the underside of the cap cover having a flared and concave curved inner sealing surface for sealing engagement with the container rim outer edge and having a shorter downwardly projecting sealing ring positioned intermediate the edges of said rim, said circular sealing portion comprising a downwardly projecting sealing ring having a generally triangular cross-section with the flared and curved surface being the hypotenuse of the triangle.
Claim 2
Dependent Claim
115 words
In a one-piece molded closure cap having a cover and a depending skirt with container engaging means on the skirt for engaging cap engaging means on the container rim finish below a closure engaging edge on the outside of the rim, the improvement comprising a circular sealing portion on the underside of the cap cover having a flared and concave curved inner sealing surface for sealing engagement with the container rim outer edge and having a shorter downwardly projecting sealing ring positioned intermediate the edges of said rim, said circular sealing portion comprising a downwardly projecting sealing ring having a generally triangular cross-section with the flared and curved surface being the hypotenuse of the triangle.
Claim 3
Dependent Claim
39 words
The closure cap as claimed in claim 1 in which the shorter sealing ring has a generally triangular cross-section and is positioned for engaging an upwardly facing surface of the container finish inwardly of the container outer rim corner.
Claim 4
Dependent Claim
101 words
In a sealed package including a container sealed with one-piece molded closure cap having a cover and a depending skirt with container engaging means on the skirt for engaging cap engaging means on the container rim finish below a container engaging edge on the outside of the rim, the improvement comprising a circular sealing portion on the underside of the cap cover having a flared and curved inner sealing surface in sealing engagement with an outer edge on the top of the container rim and also having a shorter downwardly projecting sealing ring positioned intermediate the margins of said sealing surface.
Claim 5
Dependent Claim
101 words
In a sealed package including a container sealed with one-piece molded closure cap having a cover and a depending skirt with container engaging means on the skirt for engaging cap engaging means on the container rim finish below a container engaging edge on the outside of the rim, the improvement comprising a circular sealing portion on the underside of the cap cover having a flared and curved inner sealing surface in sealing engagement with an outer edge on the top of the container rim and also having a shorter downwardly projecting sealing ring positioned intermediate the margins of said sealing surface.
Claim 6
Dependent Claim
19 words
The sealed package as claimed in claim 3 in which said outer edge on the container comprises a step.
Claim 7
Dependent Claim
20 words
The sealed package as claimed in claim 3 in which said outer edge on the container comprises a rounded surface.
Claim 8
Dependent Claim
20 words
The sealed package as claimed in claim 3 in which said shorter circular sealing ring has a generally triangular cross-section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |