US3924746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Childproof package
Assignee: PACO PACKAGING Inc
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Filing: 1974-01-07
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Granted: 1975-12-09
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Expires: 1994-01-07
Abstract
Abstract A laminate having high resistance to tearing is sealed to a substrate having a rigid blister cavity in a manner so as to provide a non-sealed zone adjacent one end thereof. The substrate is slit at the non-sealed zone to define a removable tab. After removal of the tab, the substrate may be peeled back to attain access to the contents of said cavity.
Inventors
- 👤 Russell R Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:40
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5855; B65D75/28; B65D75/30; B65D75/32; B65D75/325; B65D75/327; B65D75/5816; B65D2215/00; B65D2215/04; B65D2575/00; B65D2575/28; B65D2575/30; B65D2575/32; B65D2575/3209; B65D2575/3218; B65D2575/3227; B65D2575/3236; B65D2575/3245; B65D2585/00; B65D2585/56; B65D75/26; B65D75/527; Y; Y10; Y10S; Y10S206/00; Y10S206/807
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
196 words
A package comprising a carrier layer of polymeric plastic having a rigid pocket formed therein and spaced from the edges thereof, said carrier layer being sealed opposite the open end of said pocket to a laminate except for an unsealed zone adjacent one end of said carrier layer, said carrier layer being slit at said zone to define a tab only on said carrier layer with the ends of the slit being adjacent to but spaced from said one end of the carrier layer by unslit portions, said tab having a width which is narrower than the width of said carrier layer, said laminate including a layer of material having high resistance to tearing, said unsealed zone being between first and second heat seals between the laminate and the carrier layer, said second heat seal being at said one end and narrower than the width of the unsealed zone while having a width corresponding generally to the width of said unslit portions, access to said pocket being attained by removal of the tab to expose the part of the laminate therebelow and then peeling the laminate with respect to said carrier layer to expose said pocket.
Claim 2
Dependent Claim
196 words
A package comprising a carrier layer of polymeric plastic having a rigid pocket formed therein and spaced from the edges thereof, said carrier layer being sealed opposite the open end of said pocket to a laminate except for an unsealed zone adjacent one end of said carrier layer, said carrier layer being slit at said zone to define a tab only on said carrier layer with the ends of the slit being adjacent to but spaced from said one end of the carrier layer by unslit portions, said tab having a width which is narrower than the width of said carrier layer, said laminate including a layer of material having high resistance to tearing, said unsealed zone being between first and second heat seals between the laminate and the carrier layer, said second heat seal being at said one end and narrower than the width of the unsealed zone while having a width corresponding generally to the width of said unslit portions, access to said pocket being attained by removal of the tab to expose the part of the laminate therebelow and then peeling the laminate with respect to said carrier layer to expose said pocket.
Claim 3
Dependent Claim
13 words
A package in accordance with claim 1 wherein said slit is generally semicircular.
Claim 4
Dependent Claim
40 words
A package in accordance with claim 1 wherein said carrier layer is a clear polymeric plastic which is thicker than the laminate, said laminate layer having high resistance to tearing being sandwiched between a paper layer and a foil layer.
Claim 5
Dependent Claim
25 words
A package in accordance with claim 1 wherein the ends of said slit are closer to said one end than intermediate portions of said slit.
Claim 6
Dependent Claim
222 words
A package comprising a carrier layer of polymeric plastic having a rigid pocket formed therein and spaced from the edges thereof, said carrier layer being sealed opposite the open end of said pocket to a laminate except for an unsealed zone, said unsealed zone being spaced from said pocket and one end of said carrier layer but being adjacent to said one end of said carrier layer, said unsealed zone extending across the width of said carrier layer and laminate, only said carrier layer being slit at said zone to define a tab only on said carrier layer with the ends of the slit being adjacent to and spaced from said one end of the carrier layer by unslit portions of said carrier layer, said tab having a width which is narrower than the width of said carrier layer and being generally semicircular with the ends of the slit being closer to said one end of said carrier layer than intermediate portions of said slit, said laminate including means providing said laminate with high resistance to tearing so that access to the pocket is attained by tearing said unslit portions to facilitate removal of the tab to expose the part of the laminate therebelow and then peeling the laminate with respect to said carrier layer to expose an article in said pocket.
Claim 7
Dependent Claim
222 words
A package comprising a carrier layer of polymeric plastic having a rigid pocket formed therein and spaced from the edges thereof, said carrier layer being sealed opposite the open end of said pocket to a laminate except for an unsealed zone, said unsealed zone being spaced from said pocket and one end of said carrier layer but being adjacent to said one end of said carrier layer, said unsealed zone extending across the width of said carrier layer and laminate, only said carrier layer being slit at said zone to define a tab only on said carrier layer with the ends of the slit being adjacent to and spaced from said one end of the carrier layer by unslit portions of said carrier layer, said tab having a width which is narrower than the width of said carrier layer and being generally semicircular with the ends of the slit being closer to said one end of said carrier layer than intermediate portions of said slit, said laminate including means providing said laminate with high resistance to tearing so that access to the pocket is attained by tearing said unslit portions to facilitate removal of the tab to expose the part of the laminate therebelow and then peeling the laminate with respect to said carrier layer to expose an article in said pocket.
Claim 8
Dependent Claim
42 words
A package in accordance with claim 5 wherein said carrier layer is thicker than said laminate, said means being a layer of polymeric plastic material having high resistance to tearing disposed between a paper layer and a foil layer of said laminate.
Claim 9
Dependent Claim
30 words
A package in accordance with claim 5 wherein said carrier layer and laminate are sealed toGether by first and second heat seals spaced from one another by said unsealed zone.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |