US3854622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Childproof cover
Assignee: Knight Engineering and Molding Co
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Filing: 1972-12-05
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Granted: 1974-12-17
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Expires: 1992-12-05
Abstract
Abstract A cover for an aerosol and similar containers that is difficult, if not impossible, for a child to remove but which may be readily removed by an understanding adult who sequentially squeezes, pulls and twists the cover after grasping it in designated locations.
Inventors
- 👤 R Mckirnan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:10
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/40; Y; Y10; Y10S; Y10S220/00; Y10S220/915
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
220 words
A childproof cover for a container such as an aerosol container having a roof, a circular collar located on said roof with said collar having an undersurface positioned above said roof, said cover being formed of a flexible plastic and including: a circular top, and outer skirt depending from said circular top, an inner skirt coaxial with said outer skirt and also depending from said top, a pair of lips projecting inwardly from the lower end of said inner skirt and positioned to engage the undersurface of said circular collar when said cover is positioned on said container, said lips being spaced from and located opposite to each other, a pair of slits formed in said inner skirt and extending from the lower edge thereof towards the circular top with said slits being located generally diametrically of each other and between said lips, and a pair of webs connecting said outer and inner skirts with said webs positioned relative to said slits so that forces inwardly applied to opposite sides of said outer skirt at the lower edge thereof adjacent Said slits will cause distortion of said outer skirt and radially outward movement of said webs which in turn will cause distortion of said inner skirt and release of said lips from engagement with the undersurface of said circular collar.
Claim 2
Dependent Claim
220 words
A childproof cover for a container such as an aerosol container having a roof, a circular collar located on said roof with said collar having an undersurface positioned above said roof, said cover being formed of a flexible plastic and including: a circular top, and outer skirt depending from said circular top, an inner skirt coaxial with said outer skirt and also depending from said top, a pair of lips projecting inwardly from the lower end of said inner skirt and positioned to engage the undersurface of said circular collar when said cover is positioned on said container, said lips being spaced from and located opposite to each other, a pair of slits formed in said inner skirt and extending from the lower edge thereof towards the circular top with said slits being located generally diametrically of each other and between said lips, and a pair of webs connecting said outer and inner skirts with said webs positioned relative to said slits so that forces inwardly applied to opposite sides of said outer skirt at the lower edge thereof adjacent Said slits will cause distortion of said outer skirt and radially outward movement of said webs which in turn will cause distortion of said inner skirt and release of said lips from engagement with the undersurface of said circular collar.
Claim 3
Dependent Claim
18 words
The childproof cover of claim 1 in which said webs are located at right angles to said slits.
Claim 4
Dependent Claim
37 words
The childproof cover of claim 1 in which indicia indicating pressure applying areas are formed on the exterior of said outer skirt adjacent the lower edge thereof with said indicia positioned at right angles to said ribs.
Claim 5
Dependent Claim
15 words
The childproof cover of claim 1 in which said indicia are aligned with said slits.
Claim 6
Dependent Claim
55 words
The childproof cover of claim 1 in which additional webs shorter than said webs of said pair of webs are provided to connect the inner and outer skirts with said shorter ribs being arranged in pairs located on opposite sides of each of said webs and spaced closer to said webs than to said slits.
Claim 7
Dependent Claim
29 words
The childproof cover of claim 1 in which said lips are arcuate shaped and each extends through an arc less than that of its portion of said inner skirt.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |