Patent US3756445A successfully refreshed from Google Patents.
US3756445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety closure assembly
Assignee: Reflex Corp of Canada Ltd
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Filing: 1971-07-12
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Granted: 1973-09-04
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Expires: 1991-07-12
Abstract
Abstract A one-piece safety closure sealing member adapted to be interposed between a safety cap and container of the type wherein the cap is applied to and removed from the container by an axial motion followed successively by a rotative motion of the cap relative to the container. The sealing member includes a base portion for overlying the opening of the mouth of the container, an annular container rim engaging sealing portion, an annular cap engaging portion for engaging the end wall of the cap, and a resilient annular biasing member projecting axially from the periphery of the base portion for biasing the sealing portion and cap engaging portion to axially spaced positions. The distance between the sealing portion and the cap engaging portion in the unstressed condition of the annular biasing member is greater than the fixed axial distance between the safety cap end wall and the container rim so that the cap is biased into locked engagement with the container by the biasing member.
Inventors
- 👤 P Hedgewick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/06; B65D41/0435
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
333 words
A one-piece safety closure sealing member adapted to be interposed between a safety cap and container of the type wherein the cap is applied to and removed from the container by an axial motion followed successively by a rotative motion of the cap relative to the container and wherein the cap is biased to a fixed axial position relative to the container when applied thereto such that the end wall of the cap is spaced axially a fixed distance from the container rim in the locked position of the cap, said sealing member comprising: a base portion of substantially uniform thickness for overlying the opening of the mouth of a container; an annular container rim engaging sealing portion; an annular cap engaging portion for engaging the end wall of a cap; a resilient annular biasing member projecting axially from the periphery of said base portion for biasing said sealing portion and cap engaging portion to axially spaced positions, the distance between said sealing portion and cap engaging portion in the unstressed condition of said annular biasing member being greater than said fixed distance between a safety cap end wall and container rim of the type between which said sealing member is adapted to be interposed, said sealing portion including a radially outwardly extending rim engaging sealing flange for overlying a container rim and an axially extending container wall engaging portion of annular cross sEction projecting axially from said base portion for engaging the inner surface of a container wall adjacent the container rim; and means defining a centrally located, integral attachment element on said base portion for rotatably and detachably securing said base portion to the end wall of a safety cap, said attachment element comprising a hollow socket member of annular cross section projecting axially from said base portion, said socket member being tapered inwardly as it extends from the base portion such that the outer end of the socket opening is smaller than the inner end thereof adjacent said base portion.
Claim 2
Dependent Claim
333 words
A one-piece safety closure sealing member adapted to be interposed between a safety cap and container of the type wherein the cap is applied to and removed from the container by an axial motion followed successively by a rotative motion of the cap relative to the container and wherein the cap is biased to a fixed axial position relative to the container when applied thereto such that the end wall of the cap is spaced axially a fixed distance from the container rim in the locked position of the cap, said sealing member comprising: a base portion of substantially uniform thickness for overlying the opening of the mouth of a container; an annular container rim engaging sealing portion; an annular cap engaging portion for engaging the end wall of a cap; a resilient annular biasing member projecting axially from the periphery of said base portion for biasing said sealing portion and cap engaging portion to axially spaced positions, the distance between said sealing portion and cap engaging portion in the unstressed condition of said annular biasing member being greater than said fixed distance between a safety cap end wall and container rim of the type between which said sealing member is adapted to be interposed, said sealing portion including a radially outwardly extending rim engaging sealing flange for overlying a container rim and an axially extending container wall engaging portion of annular cross sEction projecting axially from said base portion for engaging the inner surface of a container wall adjacent the container rim; and means defining a centrally located, integral attachment element on said base portion for rotatably and detachably securing said base portion to the end wall of a safety cap, said attachment element comprising a hollow socket member of annular cross section projecting axially from said base portion, said socket member being tapered inwardly as it extends from the base portion such that the outer end of the socket opening is smaller than the inner end thereof adjacent said base portion.
Claim 3
Dependent Claim
45 words
A one-piece safety closure sealing member as claimed in claim 1 wherein said annular biasing member comprises an annular looped portion molded integrally with said base portion at the periphery thereof, the outer free end of said annular looped portion constituting said cap engaging portion.
Claim 4
Dependent Claim
138 words
A one-piece safety closure sealing member as claimed in claim 1 wherein a reversed looped portion is molded integrally with said base portion and includes an inner annular side wall extending axially from the periphery of said base portion, an intermediate annular side wall extending from the outer end of said inner side wall to the opposite side of said base portion, and an outer annular side wall extending from the end of said intermediate side wall located on said opposite side in a return direction toward said base portion, said inner and intermediate side walls defining said annular biasing member with the adjoining ends thereof defining said cap engaging portion, said outer side wall defining a container wall engaging portion of said sealing portion for engaging the inner surface of a container wall adjacent the container rim.
Claim 5
Dependent Claim
46 words
A one-piece safety closure sealing member as claimed in claim 3 wherein said sealing portion further includes a radially outwardly extending rim engaging sealing flange on the end of said outer side wall opposite its juncture with said intermediate side wall for overlying a container rim.
Claim 6
Dependent Claim
35 words
A one-piece safety closure sealing member as claimed in claim 4 further including an annular bead formed on said rim engaging sealing flange and projecting axially therefrom in a direction to engage a container rim.
Claim 7
Dependent Claim
59 words
A one-piece safety closure sealing member as claimed in claim 1 wherein said annular biasing member comprises a resilient web of annular cross-section having an inner annular end joined integrally to said base portion at the periphery thereof, said web extending axially from said base portion and terminating in an outer annular free end defining said cap engaging portion.
Claim 8
Dependent Claim
30 words
A one-piece safety closure sealing member as claimed in claim 6 wherein the diameter of said outer annular free end is larger than the diameter of said inner annular end.
Claim 9
Dependent Claim
56 words
A one-piece safety closure sealing member as claimed in claim 1 wherein said annular biasing member comprises an annular resilient web having an inner annular end joined integrally to said base portion, said web extending axially from said base portion and terminating in an outer annular free end, said free end defining said cap engaging portion.
Claim 10
Dependent Claim
72 words
A one-piece safety closure sealing member as claimed in claim 8 wherein the diameter of said outer annular free end is larger than the diameter of said inner annular end, and said web is curved outwardly from said inner end to said outer end so that said outer end is movable solely axially toward said inner end upon flexure of said web without circumferentially and radially stretching said outer annular free end.
Claim 11
Dependent Claim
163 words
Safety closure means including a one-piece plastic sealing member having a substantially planar base portion, a reversed looped portion molded integrally with said base portion and extending generally axially from the periphery of said base portion, said reversed looped portion including: an inner annular side wall portion extending axially and radially outwardly from the periphery of said base portion, an intermEdiate annular side wall portion extending axially and radially outwardly from the outer end of said inner side wall in the opposite direction with respect to said base portion, and an outer annular side wall extending axially and radially outwardly from the remote end of said intermediate side wall with respect to the adjacent ends of the inner and intermediate side walls and in the opposite direction from said intermediate side wall with respect to said base portion, and a radially outwardly projecting flange on the end of said outer annular side wall remote from its juncture with the intermediate annular side wall.
Claim 12
Dependent Claim
163 words
Safety closure means including a one-piece plastic sealing member having a substantially planar base portion, a reversed looped portion molded integrally with said base portion and extending generally axially from the periphery of said base portion, said reversed looped portion including: an inner annular side wall portion extending axially and radially outwardly from the periphery of said base portion, an intermEdiate annular side wall portion extending axially and radially outwardly from the outer end of said inner side wall in the opposite direction with respect to said base portion, and an outer annular side wall extending axially and radially outwardly from the remote end of said intermediate side wall with respect to the adjacent ends of the inner and intermediate side walls and in the opposite direction from said intermediate side wall with respect to said base portion, and a radially outwardly projecting flange on the end of said outer annular side wall remote from its juncture with the intermediate annular side wall.
References Cited (Backward Citations)
FR1025273A
Cited
US2989204A
Cited
US3331523A
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FR1439265A
Cited
US3432065A
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FR1580979A
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |