Patent US3633779A successfully refreshed from Google Patents.
US3633779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable safety closure
Assignee: Monsanto Co
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Filing: 1970-01-02
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Granted: 1972-01-11
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Expires: 1990-01-02
Abstract
Abstract A safety closure to deter children from opening containers used to store potentially dangerous substances. The closure includes a skirt which is permanently fastened to the container and freely rotatable thereon, an overcap for sealing the container opening and a locking mechanism for securing the overcap to the skirt. The skirt has a generally cylindrical configuration with a portion of the locking mechanism either on the inside or outside of the skirt. The portion of the locking mechanism on the overcap is disengaged from the portion on the skirt when the overcap is rotated to a particular position with respect to the skirt. However, the overcap will remain in a locked position if the skirt is rotated together with the overcap.
Inventors
- 👤 Gerald A Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:05
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
A safety closure for an opening of a container comprising: a. an overcap to cover the opening of said container; b. a skirt adapted for mounting on a container wall defining said opening; c. locking means comprising a flange extending substantially around the periphery of said skirt, said flange being interrupted to form a slot, and a locking member depending from said overcap, said locking member having a projection underneath said flange when said overcap is in a locked position on said skirt, said projection having a width such that it can pass through said slot, yet the extent to which said projection lies underneath said flange is such that said projection remains underneath said flange when axial separating force is applied to said overcap with respect to said skirt; d. means for sealing the opening of said container; and e. means for fastening said skirt to said container such that said skirt can rotate freely with respect to said container while fastened on said container.
Claim 2
Dependent Claim
166 words
A safety closure for an opening of a container comprising: a. an overcap to cover the opening of said container; b. a skirt adapted for mounting on a container wall defining said opening; c. locking means comprising a flange extending substantially around the periphery of said skirt, said flange being interrupted to form a slot, and a locking member depending from said overcap, said locking member having a projection underneath said flange when said overcap is in a locked position on said skirt, said projection having a width such that it can pass through said slot, yet the extent to which said projection lies underneath said flange is such that said projection remains underneath said flange when axial separating force is applied to said overcap with respect to said skirt; d. means for sealing the opening of said container; and e. means for fastening said skirt to said container such that said skirt can rotate freely with respect to said container while fastened on said container.
Claim 3
Dependent Claim
69 words
The device of claim 1 wherein an upper peripheral portion of said skirt has a substantially horizontally extending registration channel and said overcap has a depending registration member adapted to ride within said registration channel when said overcap is mounted on said skirt, said registration channel having one stop denoting an unlocked position and a second stop denoting a locked position for said overcap with respect to said skirt.
Claim 4
Dependent Claim
172 words
A safety closure for an opening of a container comprising: a. an overcap to cover the opening of said container; b. a skirt adapted for mounting on a container wall defining said opening; c. locking means comprising a channel in a surface of said skirt and a locking member depending from said overcap, said channel having a locking section and an inlet section extending between said locking section and the upper peripheral edge of said skirt, said locking member having a lug for movement through said inlet section and said locking section of said channel, said lug being sized such that when said overcap is in a locked position on said skirt said lug remains engaged in said locking section of said channel when separating force is applied to said overcap with respect to said skirt; d. means for sealing the opening of said container; and e. means for fastening said skirt to said container such that said skirt can rotate freely with respect to said container while fastened on said container.
Claim 5
Dependent Claim
172 words
A safety closure for an opening of a container comprising: a. an overcap to cover the opening of said container; b. a skirt adapted for mounting on a container wall defining said opening; c. locking means comprising a channel in a surface of said skirt and a locking member depending from said overcap, said channel having a locking section and an inlet section extending between said locking section and the upper peripheral edge of said skirt, said locking member having a lug for movement through said inlet section and said locking section of said channel, said lug being sized such that when said overcap is in a locked position on said skirt said lug remains engaged in said locking section of said channel when separating force is applied to said overcap with respect to said skirt; d. means for sealing the opening of said container; and e. means for fastening said skirt to said container such that said skirt can rotate freely with respect to said container while fastened on said container.
Claim 6
Dependent Claim
69 words
The device of claim 3 wherein an upper peripheral portion of said skirt has a substantially horizontally extending registration channel and said overcap has a depending registration member adapted to ride within said registratiOn channel when said overcap is mounted on said skirt, said registration channel having one stop denoting an unlocked position and a second stop denoting a locked position for said overcap with respect to said skirt.
References Cited (Backward Citations)
US3027034A
Cited
US3469726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |