US3758000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety closure for containers
Assignee: Drackett Co
•
Filing: 1971-05-14
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Granted: 1973-09-11
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Expires: 1991-05-14
Abstract
Abstract A safety closure including a base member having a spout, an annular shoulder around the spout, and a peripheral ridge protruding from the shoulder, a cover member having a domed crown with a skirt depending therefrom, a plurality of stacking bosses protruding from the outer surface of the crown and a segmented ring protruding from the inner surface of the crown, and a hinge interconnecting the base member and the cover member and having a weakened portion of reduced cross section adjacent the cover member, the cover member being adapted to be disposed on the base member with the segmented ring engaging a top surface of the spout and a peripheral bottom edge of the skirt captured by the ridge whereby the cover member can be removed from the base member only by depressing the crown to free the peripheral bottom edge.
Inventors
- 👤 F Mack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:18
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/045; B65D47/00; B65D47/04; B65D47/06; B65D47/12; B65D47/14
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
163 words
A safety closure for a container comprising a base member having an upstanding spout with annular abutment means disposed therearound; and a cover member made of flexible material and having a crown, a skirt depending from said crown, a peripheral bottom edge for said skirt, fulcrum means extending internally from said crown and stacking protrusion means extending externally from said crown in alignment with said fulcrum means; said cover member being disposed on said base member with said peripheral bottom edge of said skirt engaging said annular abutment means and said fulcrum means engaging said spout, said cover member being removable from said base member by depressing said crown to disengage said peripheral bottom edge of said skirt; wherein said fulcrum means includes a ring of discretE segments protruding from the inner surface of said crown and said stacking protrusion means including a plurality of spaced bosses extending from the outer surface of said crown and aligned with said ring of discrete segments.
Claim 2
Dependent Claim
163 words
A safety closure for a container comprising a base member having an upstanding spout with annular abutment means disposed therearound; and a cover member made of flexible material and having a crown, a skirt depending from said crown, a peripheral bottom edge for said skirt, fulcrum means extending internally from said crown and stacking protrusion means extending externally from said crown in alignment with said fulcrum means; said cover member being disposed on said base member with said peripheral bottom edge of said skirt engaging said annular abutment means and said fulcrum means engaging said spout, said cover member being removable from said base member by depressing said crown to disengage said peripheral bottom edge of said skirt; wherein said fulcrum means includes a ring of discretE segments protruding from the inner surface of said crown and said stacking protrusion means including a plurality of spaced bosses extending from the outer surface of said crown and aligned with said ring of discrete segments.
Claim 3
Dependent Claim
26 words
The safety closure as recited in claim 1 wherein said inner surface of said crown has an annular recess therein concentric with and inside said ring.
Claim 4
Dependent Claim
152 words
A safety closure for a container comprising a base member having a neck and an upstanding spout, a shoulder extending outwardly from said spout, and a ridge protruding from said shoulder having an inner and an outer surface, said inner surface extending upwardly and inwardly such that the angle between the inner surface and the shoulder is less than a right angle, said outer surface of said ridge being smoothly round or arcuate such that the neck joins with the outer surface in a substantially tangential relationship; and a cover member having a crown, a skirt depending from said crown and a peripheral bottom edge for said skirt, said cover member being disposed on said base member with said ridge capturing said peripheral bottom edge of said skirt whereby said cover member can be removed from said base member by depressing said crown to free said peripheral bottom edge of said skirt.
Claim 5
Dependent Claim
152 words
A safety closure for a container comprising a base member having a neck and an upstanding spout, a shoulder extending outwardly from said spout, and a ridge protruding from said shoulder having an inner and an outer surface, said inner surface extending upwardly and inwardly such that the angle between the inner surface and the shoulder is less than a right angle, said outer surface of said ridge being smoothly round or arcuate such that the neck joins with the outer surface in a substantially tangential relationship; and a cover member having a crown, a skirt depending from said crown and a peripheral bottom edge for said skirt, said cover member being disposed on said base member with said ridge capturing said peripheral bottom edge of said skirt whereby said cover member can be removed from said base member by depressing said crown to free said peripheral bottom edge of said skirt.
Claim 6
Dependent Claim
18 words
The safety closure as recited in claim 3 wherein said cover member is integrally formed of flexible material.
Claim 7
Dependent Claim
53 words
The safety closure as recited in claim 4 wherein said spout has an annular outer top surface, and said cover member has fulcrum means extending internally therefrom to engage said top surface of said spout and provide a fulcrum for freeing said peripheral bottom edge of said skirt when said crown is depressed.
Claim 8
Dependent Claim
42 words
The safety closure as recited in claim 5 wherein said spout has a central bore therein extending through said top surface and said top surface has an outer peripheral rim and slopes inwardly from said outer peripheral rim to said central bore.
Claim 9
Dependent Claim
55 words
The safety closure as recited in claim 5 wherein said crown is domed and has an inner surface and an outer surface, said fulcrum means includes a ring protruding from said inner surface, and said cover member includes stacking protrusion means extending outwardly from said outer surface of said crown in alignment with said ring.
Claim 10
Dependent Claim
41 words
The safety closure as recited in claim 7 wherein said ring is formed of a plurality of discrete segments and said stacking protrusion means includes a plurality of spaced bosses aligned with said ring segments to provide areas of substantial thickness.
Claim 11
Dependent Claim
26 words
The safety closure as recited in claim 8 wherein said inner surface of said crown has an annular recess therein concentric with and inside said ring.
Claim 12
Dependent Claim
57 words
The safety closure as recited in claim 9 wherein said top surface of said spout has an outer peripheral rim, said shoulder of said base member extends inwardly of said outer peripheral rim of said top surface of said spout, and said spout includes a side wall extending outwardly from said shoulder to said outer peripheral rim.
Claim 13
Dependent Claim
24 words
The safety closure as recited in claim 10 wherein said crown and said skirt of said cover member integrally have a smoothly rounded configuration.
Claim 14
Dependent Claim
69 words
The safety closure as recited in claim 11 wherein said peripheral bottom edge of said skirt has a thickness to abut said side wall of said spout and said ridge, and said skirt has a flexing portion adjacent said peripheral bottom edge having a thickness less than the thickness of said peripheral bottom edge, said flexing portion surrounding said outer peripheral rim of said top surface of said spout.
Claim 15
Dependent Claim
51 words
The safety closure as recited in claim 12 and further comprising a hinge interconnecting said base member and said cover member, said hinge having a weakened portion of reduced cross section whereby said hinge will break if utilized to remove said cover member from said base member without depressing said crown.
Claim 16
Dependent Claim
59 words
The safety closure as recited in claim 13 wherein said base member, said cover member and said Hinge are integrally formed of flexible, resilient material, and said hinge is doubled upon itself to resiliently urge said cover member away from said base member whereby said cover member is moved away from said base member when said crown is depressed.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |