Patent US4997097A successfully refreshed from Google Patents.
US4997097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw closure for bottles with venting means
Assignee: Jacob Berg GmbH and Co KG
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Filing: 1989-11-21
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Granted: 1991-03-05
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Expires: 2009-11-21
Abstract
Abstract The invention relates to a screw closure of plastics material for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with internal screwthread (7), and a circumferentially extending, inwardly projecting bead (5) at the transition between the cap end portion (2) and the peripheral cap portion (3), wherein a sealing disc (9) which is movable relative to the cap bears against the inward side of the cap end portion (2) and the projecting bead (5). In order, in regard to such a pressure-tight closure, to limit the maximum pressure up to which the closure remains pressure-tight, to a value which is noticeably below the pressure at which a bottle explodes, it is proposed in accordance with the invention that the bead has a segment-like interruption.
Inventors
- 👤 Gunter J. Krautkramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:22
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1633; B65D51/1661; B65D41/00; B65D41/32; B65D41/34; B65D41/3423; B65D41/3428
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
97 words
A screw closure of plastics material for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with an internal screwthread (7), and a circumferentially extending, inwardly projecting bead (5) at a transition between the cap end portion (2) and the peripheral cap portion (3), wherein a sealing disc (9) which is movable relative to the cap bears against the inward side of the cap end portion (2) and the projecting bead (5), characterized in that the bead (5) has a segment-like interruption (6).
Claim 2
Dependent Claim
97 words
A screw closure of plastics material for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with an internal screwthread (7), and a circumferentially extending, inwardly projecting bead (5) at a transition between the cap end portion (2) and the peripheral cap portion (3), wherein a sealing disc (9) which is movable relative to the cap bears against the inward side of the cap end portion (2) and the projecting bead (5), characterized in that the bead (5) has a segment-like interruption (6).
Claim 3
Dependent Claim
26 words
A screw closure according to claim 1 characterized in that the segment-like interruption of the bead extends over a circular arc (φ) of at least 15°.
Claim 4
Dependent Claim
22 words
A screw closure according to claim 1 characterized in that the segment-like interruption extends over a circular arc (φ) of about 60°.
Claim 5
Dependent Claim
22 words
A screw closure according to claim 3 characterized in that the segment-like interruption extends over a circular arc (φ) of about 30°.
Claim 6
Dependent Claim
21 words
A screw closure according to claim 3 characterized in that the segment-like interruption extends over an angle (φ) of about 45°.
Claim 7
Dependent Claim
24 words
A screw closure according to claim 1 characterised in that a plurality of segment-like interruptions (6) are arranged along the circumferentially extending bead (5).
Claim 8
Dependent Claim
34 words
A screw closure according to claim 6 characterised in that the segment-like interruptions each extend over respectively equal angular regions at respectively equal angular spacings from each other along the circumference of the bead.
Claim 9
Dependent Claim
128 words
A screw closure for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with internal screwthread (7), wherein there is provided a sealing disc which is arranged substantially at the inward side of the cap end portion (2) and which is movable relative to the cap, the cap having a top side, a bottom side and an outer peripheral edge, the screw closure being characterized in that the sealing disc has at least one recess in the top side (11) extending only partially through the disc and facing the cap end portion, the recess being positioned in an edge region of the disc radially equidistant with the edge of the mouth of the bottle.
Claim 10
Dependent Claim
128 words
A screw closure for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with internal screwthread (7), wherein there is provided a sealing disc which is arranged substantially at the inward side of the cap end portion (2) and which is movable relative to the cap, the cap having a top side, a bottom side and an outer peripheral edge, the screw closure being characterized in that the sealing disc has at least one recess in the top side (11) extending only partially through the disc and facing the cap end portion, the recess being positioned in an edge region of the disc radially equidistant with the edge of the mouth of the bottle.
Claim 11
Dependent Claim
34 words
A screw closure according to claim 8 characterized in that the recess extends in the region of the outer edge of the sealing disc (9) over an angular region β of at least 10°.
Claim 12
Dependent Claim
23 words
A screw closure according to claim 9 characterized in that the recess extends over an angular region β of between 15° and 35°.
Claim 13
Dependent Claim
33 words
A screw closure according to claim 8 characterised in that the depth of the recess corresponds at least to half the thickness of the sealing disc (9) in the region beside the recess.
Claim 14
Dependent Claim
25 words
A screw closure according to claim 8 characterised in that a plurality of recesses are disposed along the circumferential region of the sealing disc (9).
Claim 15
Dependent Claim
37 words
A screw closure according to claim 12 characterised in that the recesses extend over respectively equal angular regions in the region of the outer edge of the recess and at respectively equal angular spacings from each other.
Claim 16
Dependent Claim
127 words
A screw closure for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with an internal screwthread (7), said closure having a sealing disc arranged substantially proximate to said cap end portion (2) and said disc being movable relative to said cap, said cap having a top side, a bottom side and an outer peripheral edge, said screw closure being characterized in that said sealing disc has at least one recess in said top side (11) facing said cap end portion and radially positioned to overlie an edge of a bottle mouth, said recess extending only partially through said sealing disc thereby leaving said bottom side uninterrupted for seating against the bottle mouth.
Claim 17
Dependent Claim
127 words
A screw closure for bottles which are under pressure, comprising a cap (1) having a cap end portion (2) and a substantially cylindrical peripheral cap portion (3) with an internal screwthread (7), said closure having a sealing disc arranged substantially proximate to said cap end portion (2) and said disc being movable relative to said cap, said cap having a top side, a bottom side and an outer peripheral edge, said screw closure being characterized in that said sealing disc has at least one recess in said top side (11) facing said cap end portion and radially positioned to overlie an edge of a bottle mouth, said recess extending only partially through said sealing disc thereby leaving said bottom side uninterrupted for seating against the bottle mouth.
Claim 18
Dependent Claim
16 words
The screw closure of claim 14, wherein said recess extends radially to said outer peripheral edge.
Claim 19
Dependent Claim
34 words
A screw closure according to claim 14 characterized in that the recess extends in the region of the outer edge of the sealing disc (9) over an angular region β of at least 10°.
Claim 20
Dependent Claim
23 words
A screw closure according to claim 16 characterized in that the recess extends over an angular region β of between 15° and 35°.
Claim 21
Dependent Claim
33 words
A screw closure according to claim 14 characterized in that the depth of the recess corresponds at least to half the thickness of the sealing disc (9) in the region beside the recess.
Claim 22
Dependent Claim
25 words
A screw closure according to claim 14 characterized in that a plurality of recesses are disposed along the circumferential region of the sealing disc (9).
Claim 23
Dependent Claim
37 words
A screw closure according to claim 19 characterized in that the recesses extend over respectively equal angular regions in the region of the outer edge of the recess and at respectively equal angular spacings form each other.
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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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |