US3850330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite closure cap
Assignee: Anchor Hocking Packaging Co
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Filing: 1973-01-08
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Granted: 1974-11-26
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Expires: 1993-01-08
Abstract
Abstract A composite plastic and metal closure cap is described for sealing containers such as glass tumblers or similar containers. The closure cap has an outer plastic ring portion which engages the container and which mounts a disc-like metal cover. The plastic ring includes lugs which snap over a bead on the container rim when the package is sealed and which are snapped off of the bead for cap removal. The cap is particularly useful for sealing vacuum containers and includes means for facilitating its removal against the vacuum force on the closure of the sealed package. In one embodiment, this means comprises a vent in the metal cap cover and an integral vent opener. In another embodiment, vacuum-breaking lift means are formed on the plastic rings.
Inventors
- 👤 C Koontz
- 👤 J Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:05
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/14; B65D51/145; B65D41/00; B65D41/32; B65D41/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
In a composite press-on, lift-off closure cap having a plastic molded outer container engaging ring including container engaging lugs and a metal cover mounted in said ring, the improvement comprising a closed vent positioned in the central portion of said cover defined by a score line, said ring having means for facilitating cap removal integrally formed thereon during the molding operation of the plastic material of the ring for assisting in lifting the cap against the sealing forces including the vacuum forces of vacuum sealed packages comprising a penetrator positioned adjacent to said plastic ring and coupled thereto by a plurality of spaced bridge members and having a vent opening button thereon, one of said bridge members being posiTioned for acting as a hinge for controlling movement of said penetrator from its position adjacent to said plastic ring to a second position over said vent, and the other of said bridges being frangible to release said penetrator for said movement.
Claim 2
Dependent Claim
160 words
In a composite press-on, lift-off closure cap having a plastic molded outer container engaging ring including container engaging lugs and a metal cover mounted in said ring, the improvement comprising a closed vent positioned in the central portion of said cover defined by a score line, said ring having means for facilitating cap removal integrally formed thereon during the molding operation of the plastic material of the ring for assisting in lifting the cap against the sealing forces including the vacuum forces of vacuum sealed packages comprising a penetrator positioned adjacent to said plastic ring and coupled thereto by a plurality of spaced bridge members and having a vent opening button thereon, one of said bridge members being posiTioned for acting as a hinge for controlling movement of said penetrator from its position adjacent to said plastic ring to a second position over said vent, and the other of said bridges being frangible to release said penetrator for said movement.
Claim 3
Dependent Claim
23 words
The composite closure as claimed in claim 1 in which said score line has a portion of relatively lesser depth in said cover.
Claim 4
Dependent Claim
32 words
The composite closure as claimed in claim 1 in which said cover has a depending flange engaging said ring, and a gasket is positioned in said cover extending inwardly from said flange.
Claim 5
Dependent Claim
27 words
A composite closure cap as claimed in claim 1 in which said vent opening button is formed of a harder material than the material of said penetrator.
Claim 6
Dependent Claim
23 words
The composite closure cap as claimed in claim 1 in which said vent opening button is an integral molded portion of the penetrator.
Claim 7
Dependent Claim
129 words
In a composite press-on, lift-off closure cap having a plastic molded outer container engaging ring including container engaging lugs and a metal cover mounted in said ring, the improvement comprising a closed vent positioned in the central portion of said cover defined by a score line, said ring having means for facilitating cap removal integrally formed thereon during the molding operation of the plastic material of the ring for assisting in lifting the cap against the sealing forces including the vacuum forces of vacuum sealed packages comprising a penetrator coupled thereto by an integrally molded bridge member and having a vent opening button thereon, and said bridge member being positioned for acting as a hinge for controlling movement of the vent opening button of said penetrator against said vent.
Claim 8
Dependent Claim
129 words
In a composite press-on, lift-off closure cap having a plastic molded outer container engaging ring including container engaging lugs and a metal cover mounted in said ring, the improvement comprising a closed vent positioned in the central portion of said cover defined by a score line, said ring having means for facilitating cap removal integrally formed thereon during the molding operation of the plastic material of the ring for assisting in lifting the cap against the sealing forces including the vacuum forces of vacuum sealed packages comprising a penetrator coupled thereto by an integrally molded bridge member and having a vent opening button thereon, and said bridge member being positioned for acting as a hinge for controlling movement of the vent opening button of said penetrator against said vent.
Claim 9
Dependent Claim
24 words
The composite closure cap as claimed in claim 6 in which said score line has a portion of relatively lesser depth in said cover.
Claim 10
Dependent Claim
33 words
The composite closure cap as claimed in claim 6 in which said cover has a depending flange engaging said ring, and a gasket is positioned in said cover extending inwardly from said flange.
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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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |