US3692199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child resistant closure
Assignee: BPrex Healthcare Brookville Inc
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Filing: 1970-11-04
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Granted: 1972-09-19
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Expires: 1990-11-04
Abstract
Abstract A two-piece closure in which the inner closure member is formed of metal and composed of a circular top panel with integrally formed depending cylindrical skirt. The skirt is provided with the usual threads for attachment to the finish of a container. The lower end or edge of the skirt terminates in a rolled head or wire. The skirt portion just below the top panel is formed with knurling. A plastic overcap, having integrally formed, downwardly projecting spring members, is formed with a depending skirt which is adapted to enclose the metal inner closure. A bead is formed at the bottom of the skirt of the outer closure or covercap to retain the two caps loosely as a unit. Inwardly projecting ribs at spaced intervals about the inner surface of the covercap cooperate in one axial position to interlock with the knurling so as to provide means for removing the inner cap and in the unstressed or normal position, the tabs will maintain the two caps in a spaced relationship such that the outer cap will rotate freely relative to the inner cap.
Inventors
- 👤 George V Mumford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:36
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/041
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
241 words
A child resistant closure comprising, in combination, a knurled metal closure having a threaded skirt and outwardly rolled lower rim portion and a plastic overcap, said overcap comprising a generally horizontal panel and integral depending skirt extending below the lower rim portion of the metal closure, a plurality of elongated, downwardly extending flexible tabs of substantially rectangular cross-section integrally formed in the undersurface of said panel and having their free ends terminating in a first plane below the panel, said tabs being joined to the panel along chordal lines and extending downwardly and circumferentially of said overcap, the free ends of said tabs having their lower edges describing horizontal radial lines with respect to the overcap axis, a plurality of groups of ribs formed in the skirt portion of said overcap and extending inwardly thereof, the lower ends of said ribs lying in a second plane slightly above said first plane, an annular, inwardly extending shoulder having its lower, horizontal surface coinciding with the upper ends of said ribs, said shoulder being of a height greater than said ribs, whereby axial displacement of said overcap in a downward direction will slightly bend said tabs and move said ribs into engagement with the knurling of said metal cap to permit removal of said metal cap by rotation of said overcap and said tabs will be prevented from excessive bending by engagement of the upper end of said metal cap and said shoulder.
Claim 2
Dependent Claim
241 words
A child resistant closure comprising, in combination, a knurled metal closure having a threaded skirt and outwardly rolled lower rim portion and a plastic overcap, said overcap comprising a generally horizontal panel and integral depending skirt extending below the lower rim portion of the metal closure, a plurality of elongated, downwardly extending flexible tabs of substantially rectangular cross-section integrally formed in the undersurface of said panel and having their free ends terminating in a first plane below the panel, said tabs being joined to the panel along chordal lines and extending downwardly and circumferentially of said overcap, the free ends of said tabs having their lower edges describing horizontal radial lines with respect to the overcap axis, a plurality of groups of ribs formed in the skirt portion of said overcap and extending inwardly thereof, the lower ends of said ribs lying in a second plane slightly above said first plane, an annular, inwardly extending shoulder having its lower, horizontal surface coinciding with the upper ends of said ribs, said shoulder being of a height greater than said ribs, whereby axial displacement of said overcap in a downward direction will slightly bend said tabs and move said ribs into engagement with the knurling of said metal cap to permit removal of said metal cap by rotation of said overcap and said tabs will be prevented from excessive bending by engagement of the upper end of said metal cap and said shoulder.
Claim 3
Dependent Claim
232 words
A child resistant closure comprising, an inner metal threaded part adapted to be screwed on a threaded container neck, an outer plastic part encompassing said inner part, said inner and outer parts being capable of relative rotary and axial sliding movement, internal ribs formed in said outer part, knurling formed on the outer surface of said inner part, said knurling and ribs being engageable in one position of axial displacement of said two parts and disengaged in a second axial position of said parts, a plurality of flexible tabs of substantially rectangular cross-section formed integrally with said outer part and extending downwardly and circumferentially of said outer part for maintaining said parts in said second position, said flexible tabs being joined to said outer part along circumferentially spaced chord lines and having squared-off free ends which engage with the outer surface of the inner part, outwardly extending means formed on the lower edge of said inner part, and inwardly extending means formed on the lower edge of said outer part for loosely retaining said parts in aSsembled relationship, inwardly extending first annular shoulder means formed in said outer part immediately above said ribs and extending inwardly a distance greater than said ribs, and second annular ledge means formed in said outer part intermediate said ribs and said lower edge for preventing axial, relative movement of said two parts beyond said second position.
Claim 4
Dependent Claim
232 words
A child resistant closure comprising, an inner metal threaded part adapted to be screwed on a threaded container neck, an outer plastic part encompassing said inner part, said inner and outer parts being capable of relative rotary and axial sliding movement, internal ribs formed in said outer part, knurling formed on the outer surface of said inner part, said knurling and ribs being engageable in one position of axial displacement of said two parts and disengaged in a second axial position of said parts, a plurality of flexible tabs of substantially rectangular cross-section formed integrally with said outer part and extending downwardly and circumferentially of said outer part for maintaining said parts in said second position, said flexible tabs being joined to said outer part along circumferentially spaced chord lines and having squared-off free ends which engage with the outer surface of the inner part, outwardly extending means formed on the lower edge of said inner part, and inwardly extending means formed on the lower edge of said outer part for loosely retaining said parts in aSsembled relationship, inwardly extending first annular shoulder means formed in said outer part immediately above said ribs and extending inwardly a distance greater than said ribs, and second annular ledge means formed in said outer part intermediate said ribs and said lower edge for preventing axial, relative movement of said two parts beyond said second position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |