US3696957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-tight, flexible and tamper-proof caps for containers having a matching neck profile
Assignee: CAPTOCAP Ltd VADUZ LIECHTENSTEIN
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Filing: 1970-11-13
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Granted: 1972-10-10
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Expires: 1990-11-13
Abstract
Abstract A fluid-tight and tamper-proof assembly comprising a container having a neck and a cap of elastomeric material, which cap comprises a top portion, and a skirt portion which engages around the neck, in which the outer surface of the neck is provided with at least two parallel collars and the inner surface of the skirt is provided with the same number of annular ribs as there are collars on the neck of the container, these ribs forming, with the inner surface of the skirt, grooves in which the collars engage resiliently when the cap is forced onto the neck characterized in that there are recesses formed under the collars on the neck to form a gap between each rib and the neck into which gaps the material of the ribs is forced when the cap is moved along the neck in a direction to remove the cap.
Inventors
- 👤 Paul S Van Baarn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:48
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/58; B65D41/46; B65D41/48; B65D41/485
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A fluid-tight and tamper-proof assembly comprising a container having a neck and a cap of elastomeric material, which comprises a top portion, and a skirt portion which engages around the neck, in which the outer surface of the neck is provided with at least two parallel collars and the inner surface of the skirt is provided with the same number of annular ribs as there are collars on the neck of the container, these collars being shaped in order to constitute under them grooves in which the ribs of the skirt engage resiliently when the cap is forced onto the neck, a gap being provided between each rib and each groove of the neck, the contact area between the matching pairs of ribs and collars being inclined by about 60* to the axis of the neck.
Claim 2
Dependent Claim
136 words
A fluid-tight and tamper-proof assembly comprising a container having a neck and a cap of elastomeric material, which comprises a top portion, and a skirt portion which engages around the neck, in which the outer surface of the neck is provided with at least two parallel collars and the inner surface of the skirt is provided with the same number of annular ribs as there are collars on the neck of the container, these collars being shaped in order to constitute under them grooves in which the ribs of the skirt engage resiliently when the cap is forced onto the neck, a gap being provided between each rib and each groove of the neck, the contact area between the matching pairs of ribs and collars being inclined by about 60* to the axis of the neck.
Claim 3
Dependent Claim
52 words
An assembly as claimed in claim 1, comprising a fluid-tight liner or inert plastic material consisting of a cup-shaped cylindrical, preferably convex bottom and an annular flange formed with an inclined outer peripheral marginal portion adapted to be resiliently locked above the first inner rib of the outer skirt of said cap.
Claim 4
Dependent Claim
101 words
A fluid-tight and tamper-proof assembly comprising a flexible cap having a top portion, an inner skirt adapted to be force fitted into the neck of a container, an outer skirt adapted to fit resiliently on the neck of the container formed with peripheral rings, said outer skirt having formed on its inner face annular beads of substantially circular cross-sectional contour, interconnected by tapered faces, and a container neck provided at the level of, and above said beads, beak-shaped rings interconnected by other tapered faces and forming beneath them grooves in which the beads of the cap skirt are engageable with gaps.
Claim 5
Dependent Claim
101 words
A fluid-tight and tamper-proof assembly comprising a flexible cap having a top portion, an inner skirt adapted to be force fitted into the neck of a container, an outer skirt adapted to fit resiliently on the neck of the container formed with peripheral rings, said outer skirt having formed on its inner face annular beads of substantially circular cross-sectional contour, interconnected by tapered faces, and a container neck provided at the level of, and above said beads, beak-shaped rings interconnected by other tapered faces and forming beneath them grooves in which the beads of the cap skirt are engageable with gaps.
Claim 6
Dependent Claim
73 words
An assembly as set forth in claim 3, which comprises a container having a neck formed with a ring and a cap of which the outer skirt comprises at the level of and above the container ring an annular bead adapted to fit under said ring, and a tear-off strip adapted to be torn completely or partially and disposed above said annular beads of the base of the outer skirt of said cap.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |