US3872970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child-resistant blister package
Assignee: Eli Lilly and Co
•
Filing: 1974-01-11
•
Granted: 1975-03-25
•
Expires: 1994-01-11
Abstract
Abstract A child-resistant blister package with a receptacle formed from a stiff flexible sheet material having a flange extending about it and adhered to a cover sheet. The flange has a transverse arched portion that is spaced in a non-adherent relationship with the cover sheet which in turn has a weakened and rupturable portion in alignment with the arched portion of the flange. The arched portion of the flange is expandable and enables one to rupture the weakened portion of the cover sheet by stretching or pulling the blister package, thereby enabling one to pull off the remainder of the cover sheet.
Inventors
- 👤 Jack Roger Edison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/28; B65D75/30; B65D75/32; B65D75/325; B65D75/326; B65D2575/00; B65D2575/28; B65D2575/30; B65D2575/32; B65D2575/3209; B65D2575/3218; B65D2575/3227; B65D2575/3236
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A child-resistant blister package comprising: a blister receptacle formed from a stiff flexible sheet material and having an open side for receiving articles therein; a flange integrally extending about the open side of said blister receptacle; said flange having a transverse expandable portion spaced between a leading edge of said flange and said blister receptacle; and a cover sheet extending across the open side of said blister receptacle and adhering to said flange; said cover sheet having a weakened and rupturable portion in juxtaposition with said flange''s transverse expandable portion serving to rupture upon pulling said flange''s leading edge to stretch said flange''s expandable portion to expose a ruptured edge of said cover sheet for peeling from said blister receptacle.
Claim 2
Dependent Claim
120 words
A child-resistant blister package comprising: a blister receptacle formed from a stiff flexible sheet material and having an open side for receiving articles therein; a flange integrally extending about the open side of said blister receptacle; said flange having a transverse expandable portion spaced between a leading edge of said flange and said blister receptacle; and a cover sheet extending across the open side of said blister receptacle and adhering to said flange; said cover sheet having a weakened and rupturable portion in juxtaposition with said flange''s transverse expandable portion serving to rupture upon pulling said flange''s leading edge to stretch said flange''s expandable portion to expose a ruptured edge of said cover sheet for peeling from said blister receptacle.
Claim 3
Dependent Claim
21 words
A child-resistant blister package in accordance with claim 1 in which said cover sheet coincides with the perimeter of said flange.
Claim 4
Dependent Claim
22 words
A child-resistant blister package in accordance with claim 1 in which said expandable portion extends across the entire width of said flange.
Claim 5
Dependent Claim
24 words
A child-resistant blister package in accordance with claim 3 in which said cover sheet''s rupturable portion is spaced from said flange''s transverse expandable portion.
Claim 6
Dependent Claim
19 words
A child-resistant blister package in accordance with claim 4 in which said flange''s expandable portion is an arched configuration.
Claim 7
Dependent Claim
21 words
A child-resistant blister package in accordance with claim 5 in which said flange''s expandable portion is a pair of parallel flutes.
Claim 8
Dependent Claim
32 words
A child-resistant blister package in accordance with claim 6 in which said cover sheet''s rupturable portion is a line of spaced cuts in alignment with the leading flute of said parallel flutes.
References Cited (Backward Citations)
US3255872A
Cited
US3054503A
Cited
US3283885A
Cited
US3207299A
Cited
US3380578A
Cited
US3809221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |