Patent US4915366A successfully refreshed from Google Patents.
US3782575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety closure
Assignee: Individual
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Filing: 1972-03-06
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Granted: 1974-01-01
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Expires: 1992-03-06
Abstract
Abstract A safety closure for a container having an annular lip and a shoulder adjacent the lip. The closure includes a unitary cap, having a rim and a dome, and a snap-action disc which is coupled to the cap. The rim of the unitary cap includes a locking projection which engages the lip on the container. The closure is placed in an unlocked position by applying a downward force to the snap-action disc to change the disc from a convex position to a concave position.
Inventors
- 👤 T Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0208; B65D43/0212; B65D50/00; B65D50/02; B65D50/04; B65D50/045; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00231; B65D2543/00259; B65D2543/00277; B65D2543/00296; B65D2543/00314; B65D2543/00342; B65D2543/0037; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00518; B65D2543/00527; B65D2543/00537; B65D2543/00555; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00648; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796; B65D2543/00824; B65D2543/00935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a unitary cap having an annular rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and a snap-action disc coupled to said cap, said disc being convex when the closure is in the locked position and being concave when the closure is in the unlocked position, said snap-action disc depressing the dome of said cap when said disc is in a concave position.
Claim 2
Dependent Claim
136 words
A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a unitary cap having an annular rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and a snap-action disc coupled to said cap, said disc being convex when the closure is in the locked position and being concave when the closure is in the unlocked position, said snap-action disc depressing the dome of said cap when said disc is in a concave position.
Claim 3
Dependent Claim
30 words
The safety closure of claim 1 wherein said rim extends above the snap-action disc when said disc is in the convex position to prevent accidental unlocking of the safety closure.
Claim 4
Dependent Claim
33 words
The safety closure of claim 2 wherein said rim mates with said container and tapers inwardly toward the top thereof to prevent grasping and removal of the closure when in the locked position.
Claim 5
Dependent Claim
23 words
The safety closure of claim 1 wherein said rim has a retaining groove on an interior surface thereof for receiving said snap-action disc.
Claim 6
Dependent Claim
30 words
The safety closure of claim 1 wherein the dome of said cap has a recessed portion to facilitate flexing of said dome in response to depression by said snap-action disc.
Claim 7
Dependent Claim
35 words
The safety closure of claim 1 wherein the snap-action disc has a centrally located bead on a side of said disc facing the dome for concentrating the lever action of said disc on the dome.
Claim 8
Dependent Claim
30 words
The safety closure of claim 1 wherein the dome of said cap includes moisture barrier means extending downwardly from the dome for mating with an interior surface of said container.
Claim 9
Dependent Claim
20 words
The safety closure of claim 7 wherein said moisture barrier means includes an annular rib for engaging said interior surface.
Claim 10
Dependent Claim
34 words
The safety closure of claim 1 wherein the dome of said cap includes a downward extension having an externally threaded portion thereon for mating in engagement With an internally threaded portion of said container.
Claim 11
Dependent Claim
137 words
A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a cap having a rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and snap-action means for holding said cap in a convex configuration when said closure is in the locked position and in a concave configuration when said closure is in the unlocked position, said snap-action means being coupled to said cap and being positioned to act on the dome of said cap.
Claim 12
Dependent Claim
137 words
A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a cap having a rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and snap-action means for holding said cap in a convex configuration when said closure is in the locked position and in a concave configuration when said closure is in the unlocked position, said snap-action means being coupled to said cap and being positioned to act on the dome of said cap.
References Cited (Backward Citations)
US3484016A
Cited
US3559843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |