US3870184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy open metal closure
Assignee: OI Glass Inc
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Filing: 1973-07-09
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Granted: 1975-03-11
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Expires: 1993-07-09
Abstract
Abstract The disclosure relates to an improvement in a convenience type (easy-open) closure for a bottle or the like. The closure includes an outer cap of severable material, such as aluminum, crimped around the rim of the bottle finish. The cap has an integral tear strip formed by score line weakening of the material. The score line has two spaced legs that join at their innermost end at the top of the cap and extend into the skirt, the one leg that extends to the free edge of the rolled or curled skirt wire is interrupted and discontinuous for a short length occurring about mid-way of the rolled section of the skirt wire. This increased the ''''hoop strength'''' of the closure. The other leg is terminated well within the skirt. Pressure retention of the closure is enhanced appreciably.
Inventors
- 👤 Thomas D Fuchs
- 👤 John J Micka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:48
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
A closure of the tear-open type for use in closing an opening of a container comprising a severable tear strip integral in said closure, said closure having a top panel portion, annular depending skirt portion adapted to encircle said opening of the container, and an annularly extending corner radius portion joining said top and skirt portions, said tear strip being defined by a score line weakening means, said tear strip including two spaced apart legs of the score line that join together only in the top portion, one leg extending from the top portion into the skirt portion and to the free edge at the periphery thereof and is interrupted and discontinuous near said free edge of said skirt, the free edge of the skirt being rolled and said interrupted portion of the one score leg being disposed in said rolled edge portion of the skirt, a pull member for severing the tear strip, and means connecting the pull member to said tear strip near the juncture of said two score line legs in the top portion for effecting the severing of the integral tear strip of said closure for removal of the latter from a container.
Claim 2
Dependent Claim
197 words
A closure of the tear-open type for use in closing an opening of a container comprising a severable tear strip integral in said closure, said closure having a top panel portion, annular depending skirt portion adapted to encircle said opening of the container, and an annularly extending corner radius portion joining said top and skirt portions, said tear strip being defined by a score line weakening means, said tear strip including two spaced apart legs of the score line that join together only in the top portion, one leg extending from the top portion into the skirt portion and to the free edge at the periphery thereof and is interrupted and discontinuous near said free edge of said skirt, the free edge of the skirt being rolled and said interrupted portion of the one score leg being disposed in said rolled edge portion of the skirt, a pull member for severing the tear strip, and means connecting the pull member to said tear strip near the juncture of said two score line legs in the top portion for effecting the severing of the integral tear strip of said closure for removal of the latter from a container.
Claim 3
Dependent Claim
197 words
A closure of the tear-open type for use in closing an opening of a container comprising a severable tear strip integral in said closure, said closure having a top panel portion, annular depending skirt portion adapted to encircle said opening of the container, and an annularly extending corner radius portion joining said top and skirt portions, said tear strip being defined by a score line weakening means, said tear strip including two spaced apart legs of the score line that join together only in the top portion, one leg extending from the top portion into the skirt portion and to the free edge at the periphery thereof and is interrupted and discontinuous near said free edge of said skirt, the free edge of the skirt being rolled and said interrupted portion of the one score leg being disposed in said rolled edge portion of the skirt, a pull member for severing the tear strip, and means connecting the pull member to said tear strip near the juncture of said two score line legs in the top portion for effecting the severing of the integral tear strip of said closure for removal of the latter from a container.
Claim 4
Dependent Claim
197 words
A closure of the tear-open type for use in closing an opening of a container comprising a severable tear strip integral in said closure, said closure having a top panel portion, annular depending skirt portion adapted to encircle said opening of the container, and an annularly extending corner radius portion joining said top and skirt portions, said tear strip being defined by a score line weakening means, said tear strip including two spaced apart legs of the score line that join together only in the top portion, one leg extending from the top portion into the skirt portion and to the free edge at the periphery thereof and is interrupted and discontinuous near said free edge of said skirt, the free edge of the skirt being rolled and said interrupted portion of the one score leg being disposed in said rolled edge portion of the skirt, a pull member for severing the tear strip, and means connecting the pull member to said tear strip near the juncture of said two score line legs in the top portion for effecting the severing of the integral tear strip of said closure for removal of the latter from a container.
Claim 5
Dependent Claim
191 words
A closure for a container having a finish rim defining a mouth opening at one end of the container, said closure comprising a top portion adapted to be disposed over said mouth opening and a depending peripheral skirt portion adapted to be disposed around said container encircling the rim thereof to secure the closure to said container, the skirt of said closure being reversedly rolled at the peripheral edge thereof, said closure having a tear section integral therewith and provided with two spaced edges that join together only in the top portion to define thereat one end of the tear section, one edge of the tear section extending from the top portion into the skirt portion and the other edge extending to a terminal end in the skirt and spaced from the peripheral edge of said skirt, said two edges of the tear strip being defined by score line weakening of the closure material, said score line weakening of said one edge being interrupted and discontinuous intermediate the rolled extent of the outer peripheral edge of said skirt, said score line extending to the outer peripheral edge of said rolled skirt.
Claim 6
Dependent Claim
191 words
A closure for a container having a finish rim defining a mouth opening at one end of the container, said closure comprising a top portion adapted to be disposed over said mouth opening and a depending peripheral skirt portion adapted to be disposed around said container encircling the rim thereof to secure the closure to said container, the skirt of said closure being reversedly rolled at the peripheral edge thereof, said closure having a tear section integral therewith and provided with two spaced edges that join together only in the top portion to define thereat one end of the tear section, one edge of the tear section extending from the top portion into the skirt portion and the other edge extending to a terminal end in the skirt and spaced from the peripheral edge of said skirt, said two edges of the tear strip being defined by score line weakening of the closure material, said score line weakening of said one edge being interrupted and discontinuous intermediate the rolled extent of the outer peripheral edge of said skirt, said score line extending to the outer peripheral edge of said rolled skirt.
Claim 7
Dependent Claim
21 words
The closure of claim 2, wherein the peripheral edge of said skirt is reversedly rolled outwardly on the closure skirt wall.
Claim 8
Dependent Claim
21 words
The closure of claim 2, wherein the peripheral edge of said skirt is reversedly rolled inwardly on the closure skirt wall.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |