Patent US3929246A successfully refreshed from Google Patents.
US3929246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container cap unit with integral sealing ring
Assignee: KONINKL EMBALLAG IND VAN LEER
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Filing: 1975-02-24
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Granted: 1975-12-30
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Expires: 1995-02-24
Abstract
Abstract A molded plastic closure cap unit having an upper closure cap, a lower integrally molded sealing ring with an inner diameter equal to the outer diameter of the closure cap and an intermediate shear zone with axially extending ribs integrally connecting the closure cap and sealing ring and forming a transition between opposed thin annular edges of the sealing ring and closure cap provided by their respective upwardly and downwardly tapering annular edge portions.
Inventors
- 👤 Wilfried Leitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:27
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3461; B65D41/3466; B65D41/348
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
An integrally molded plastic closure cap unit for a bottle and like container and having a closure cap with an annular skirt and adapted to be removably inserted over a container neck opening with the annular skirt surrounding the neck of the container, and an annular sealing ring below the annular skirt of the closure cap contoured to be inserted around the container neck and retained thereon to prevent normal removal of the closure cap without severing the closure cap from the sealing ring, the inner diameter of the annular sealing ring being substantially equal to and coaxial with the outer diameter of the closure cap, and the closure cap unit having an annular shear zone intermediate the annular skirt and sealing ring with axially extending severable means interconnecting the annular skirt and annular sealing ring and adapted to be severed to permit the closure cap to be removed from the container.
Claim 2
Dependent Claim
152 words
An integrally molded plastic closure cap unit for a bottle and like container and having a closure cap with an annular skirt and adapted to be removably inserted over a container neck opening with the annular skirt surrounding the neck of the container, and an annular sealing ring below the annular skirt of the closure cap contoured to be inserted around the container neck and retained thereon to prevent normal removal of the closure cap without severing the closure cap from the sealing ring, the inner diameter of the annular sealing ring being substantially equal to and coaxial with the outer diameter of the closure cap, and the closure cap unit having an annular shear zone intermediate the annular skirt and sealing ring with axially extending severable means interconnecting the annular skirt and annular sealing ring and adapted to be severed to permit the closure cap to be removed from the container.
Claim 3
Dependent Claim
32 words
The integrally molded plastic closure cap unit according to claim 1 wherein the severable means comprises a plurality of angularly spaced axially extending ribs interconnecting the annular skirt and annular sealing ring.
Claim 4
Dependent Claim
45 words
The integrally molded plastic closure cap unit according to claim 2 wherein the annular skirt and annular sealing ring have adjacent inner annular coaxial surfaces and wherein the axially extending ribs extend between said adjacent inner annular surfaces of the annular skirt and sealing ring.
Claim 5
Dependent Claim
37 words
The integrally molded plastic closure cap unit according to claim 1 wherein the annular skirt and annular sealing ring have inner and outer concave annular surfaces respectively contiguous to and extending mutually tangentially at the shear zone.
Claim 6
Dependent Claim
43 words
The integrally molded plastic closure cap unit according to claim 1 wherein the annular skirt and annular sealing ring have contiguous annular portions with radial thicknesses tapering toward the shear zone and forming opposed thin coaxial annular edge portions with substantially equal diameters.
References Cited (Backward Citations)
US3455478A
Cited
US3650428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |