US3841514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety closurer
Assignee: Silgan Plastic Food Containers Corp
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Filing: 1973-02-14
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Granted: 1974-10-15
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Expires: 1993-02-14
Abstract
Abstract A safety package consisting of a one piece cap and a container having co-operating elements which make the closure significantly difficult of removal by a small child. The cap has a top and an internally threaded inner wall which mates with threads on the container neck. The cap also has an outer spaced, concentric flexible skirt. The shoulder of the container near the threaded neck has one or more recesses and the outer skirt of the closure has a corresponding number of depending lugs. Each lug snaps into a recess when the cap is threaded onto the neck to a sealed position. Inward deformation of the outer skirt is necessary to flex the skirt to move each lug radially outwardly beyond its recess in order for the cap to be removed. Cooperating means on the cap and container prevent the cap from being threaded onto the neck beyond the normally sealed position.
Inventors
- 👤 G Montgomery
- 👤 P Gach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:58
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/045; B65D50/046
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
A safety package comprising a container and a cap, said container having a bottom, a sidewall, a neck and an annular shoulder extending between said neck and said sidewall, and at least one lug recess in said shoulder, said cap having a top, an inner wall depending from said top, cooperating threads on said container neck and said inner wall for retaining said cap in sealing position on said container, a liner on the underside of said cap top, an outer skirt depending from said top in concentric relationship to said inner wall, and at least one depending lug on said outer wall having a lower portion extending below the bottom of said inner wall that is adapted for engagement in said recess when said cap is turned to sealing position, the trailing side of said lug engaging the back wall of such recess to prevent said cap being unscrewed off of said neck, and cooperating means on said cap and said container for preventing the rotation of said cap onto said container neck beyond such sealing position.
Claim 2
Dependent Claim
178 words
A safety package comprising a container and a cap, said container having a bottom, a sidewall, a neck and an annular shoulder extending between said neck and said sidewall, and at least one lug recess in said shoulder, said cap having a top, an inner wall depending from said top, cooperating threads on said container neck and said inner wall for retaining said cap in sealing position on said container, a liner on the underside of said cap top, an outer skirt depending from said top in concentric relationship to said inner wall, and at least one depending lug on said outer wall having a lower portion extending below the bottom of said inner wall that is adapted for engagement in said recess when said cap is turned to sealing position, the trailing side of said lug engaging the back wall of such recess to prevent said cap being unscrewed off of said neck, and cooperating means on said cap and said container for preventing the rotation of said cap onto said container neck beyond such sealing position.
Claim 3
Dependent Claim
32 words
A safety package according to claim 1 in which the container is a glass bottle having an axial mold parting plane and the back wall of the recess lies in such plane.
Claim 4
Dependent Claim
35 words
A safety package according to claim 1, and camming means comprisng a container camming surface on said shoulder whereby when said cap is moved downwardly, said lug engages said camming Means and is urged outwardly.
Claim 5
Dependent Claim
26 words
A safety package according to claim 3, wherein said cap includes two opposed lugs depending from said skirt and said container shoulder has two opposed recesses.
Claim 6
Dependent Claim
36 words
A safety package according to claim 1, wherein said cooperating means consists of blind end threads on said neck and on said inner wall so positioned as to be engaged when said lug enters said recess.
Claim 7
Dependent Claim
157 words
A combination safety package comprising a container and a unitary screw-on cap, said container having a bottom, a cylindrical sidewall, a threaded neck and a shoulder extending between said threaded neck and said sidewall, said container shoulder having at least one lug recess, said screw-on cap having a top, a downwardly extending threaded inner wall for mating with said threaded neck of said container, a sealing liner within said inner wall, and an outer, spaced, concentric, resilient skirt depending from said top, said skirt extending below said inner wall, said skirt having at least one downwardly extending locking lug, said lug overlying and being in an engageable relationship with said container shoulder and engageable in said lug recess when said cap is screwed onto said container to sealing position and cooperating means on said cap and said container for stopping the rotation of said cap onto said container neck when said lug engages in said lug recess.
Claim 8
Dependent Claim
157 words
A combination safety package comprising a container and a unitary screw-on cap, said container having a bottom, a cylindrical sidewall, a threaded neck and a shoulder extending between said threaded neck and said sidewall, said container shoulder having at least one lug recess, said screw-on cap having a top, a downwardly extending threaded inner wall for mating with said threaded neck of said container, a sealing liner within said inner wall, and an outer, spaced, concentric, resilient skirt depending from said top, said skirt extending below said inner wall, said skirt having at least one downwardly extending locking lug, said lug overlying and being in an engageable relationship with said container shoulder and engageable in said lug recess when said cap is screwed onto said container to sealing position and cooperating means on said cap and said container for stopping the rotation of said cap onto said container neck when said lug engages in said lug recess.
Claim 9
Dependent Claim
22 words
The safety package of claim 6 wherein said cooperating means consists of a stop on the threads on said threaded inner wall.
Claim 10
Dependent Claim
32 words
The safety package of claim 6 wherein said cooperating means consists of a lip on said recess engaged by the leading edge of said lug after said lug engages in said recess.
Claim 11
Dependent Claim
42 words
The safety package of claim 6 wherein said container has a pair of circumferentially spaced lug recesses, and wherein said outer concentric skirt has a pair of similarly spaced lugs complementary to said recesses, for releasably locking said cap to said container.
Claim 12
Dependent Claim
70 words
A safety package combination as in claim 9 and oppositely located arcuate slots in said cap top between the upper ends of said inner wall and said outer skirt and located above said lugs, whereby inward displacement of the lower portion of said outer skirt intermediate said lugs is facilitated and said lugs are radially outwardly displaced by flexure of the upper edge of said outer skirt adjacent such slots.
References Cited (Backward Citations)
US3739934A
Cited
US3770153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |