Patent US3877598A successfully refreshed from Google Patents.
US3877598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure structures having child-safety feature
Assignee: Silgan Dispensing Systems Slatersville LLC
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Filing: 1974-02-25
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Granted: 1975-04-15
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Expires: 1994-02-25
Abstract
Abstract Closure structures which are constructed so that when pressure is applied to a portion of a cap in a closed position on a base that the cap is tilted to a position in which it can be moved from the closed position can be constructed by using a fulcrum means adjacent to spaced surfaces on the base and the cap. Flange means on the base and the cap are normally engaged when the cap is in a closed position so as to hold the cap in the closed position. These flange means are at least partially disengaged as a result of the rotation of the cap indicated.
Inventors
- 👤 Robert E Hazard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:56
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/12; B65D47/14; B65D47/147; B65D47/148
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
216 words
In a closure structure having a base with an opening leading therethrough and a cap having a top, said cap being intended to be positioned on said base so that said top covers said opening in a closed position and being capable of being moved to an opened position in which said top does not cover said opening the improvement which comprises: projecting flange means oN said base and on said cap for engaging one another when said cap is in said closed position so as to hold said cap on said base, at least one of said flange means being capable of being temporarily deformed so as to permit said cap to be assembled on said base in said closed position and so as to permit said cap to be removed from said base to said opened position, surfaces on said base and said cap which are spaced from one another when said cap is in said closed position, and fulcrum means located adjacent to one of said spaced surfaces, said surfaces and said fulcrum means being shaped so as to permit said cap to be rotated about said fulcrum means so as to be at least partially disengage said flange means when said cap is being moved from said closed to said opened position.
Claim 2
Dependent Claim
216 words
In a closure structure having a base with an opening leading therethrough and a cap having a top, said cap being intended to be positioned on said base so that said top covers said opening in a closed position and being capable of being moved to an opened position in which said top does not cover said opening the improvement which comprises: projecting flange means oN said base and on said cap for engaging one another when said cap is in said closed position so as to hold said cap on said base, at least one of said flange means being capable of being temporarily deformed so as to permit said cap to be assembled on said base in said closed position and so as to permit said cap to be removed from said base to said opened position, surfaces on said base and said cap which are spaced from one another when said cap is in said closed position, and fulcrum means located adjacent to one of said spaced surfaces, said surfaces and said fulcrum means being shaped so as to permit said cap to be rotated about said fulcrum means so as to be at least partially disengage said flange means when said cap is being moved from said closed to said opened position.
Claim 3
Dependent Claim
27 words
A closure structure as claimed in claim 1 wherein: the bottom of said cap fits against the top of said base except where said surfaces are located.
Claim 4
Dependent Claim
55 words
A closure structure as claimed in claim 2 including: spacer means located between said surfaces, said spacer means serving to prevent said cap from being rotated about said fulcrum means, said spacer means being capable of being removed from between said surfaces so as to permit said cap to be rotated about said fulcrum means.
Claim 5
Dependent Claim
61 words
A closure structure as claimed in claim 1 wherein: said base has a cylindrical neck surrounding said opening. said cap has a dependent skirt which fits around said neck secured to said top, said flange means on said cap comprises an internal flange located within said skirt, said flange means on said base comprises an external flange located on said neck.
Claim 6
Dependent Claim
58 words
A closure structure as claimed in claim 4 wherein: the bottom of said skirt fits against the top of said base when said cap is in said closed position, said surface on said base is a recessed portion in the top of said base, said surface on said cap is a part of the bottom of said skirt.
Claim 7
Dependent Claim
53 words
A closure structure as claimed in claim 5 wherein: said recessed portion is a groove in the top of said base. said cap being capable of being rotated about said fulcrum means so a part of said skirt extends into said groove. said fulcrum means comprises shoulders at the extremities of said groove.
Claim 8
Dependent Claim
27 words
A closure structure as claimed in claim 6 wherein: said groove is covered by the bottom of said skirt when said cap is in said closed position.
Claim 9
Dependent Claim
26 words
A closure structure as claimed in claim 5 wherein: said recessed portion is exposed to the exterior of said base when said closure structure is used.
Claim 10
Dependent Claim
63 words
A closure structure as claimed in claim 8 including: spacer means located within said recess between said cap and said base for preventing said cap from being rotated about said fulcrum means, said spacer means being capable of being removed from between said cap and said base so as to permit said cap to be moved from said closed to said opened position.
Claim 11
Dependent Claim
49 words
A closure structure as claimed in claim 9 wherein: said spacer means comprises a spacer band integral with said base and connected to said base by a small quantity of material capable of being easily severed so as to permit said spacer band to be removed from said base.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |