US3937349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-opening crown cap
Assignee: Individual
•
Filing: 1974-09-11
•
Granted: 1976-02-10
•
Expires: 1994-09-11
Abstract
Abstract This invention relates to a crown cap, and particularly, to an easy open type crown cap provided with an inclined tongue element and two non-intersecting score lines extending from two sides of said tongue element toward the internal side of the crown cap and being easily removed therefrom by hand without the need of using any auxiliary openers.
Inventors
- 👤 Shih Chen Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:14
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/40; B65D41/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
An easy-opening crown cap for closing the open end of bottles and the like, wherein the crown cap is of the type having a substantially flat top and a depending annular skirt of crimped configuration having alternate raised and depressed portions, a downwardly and outwardly inclined tongue on the cap projecting below a bottom edge portion of the skirt, said tongue having a plurality of longitudinally extending reinforcing ribs of a length slightly greater than the crimps in the skirt, and a lower end edge portion of the tongue being warped to reinforce the tongue, said cap having a pair of circumferentially spaced apart notches extending upwardly from a lower edge of the skirt in registry with opposite edges of the tongue, and a pair of weakened score lines extending upwardly from the notches across the skirt and across the flat top of the cap a distance greater than the radius of the cap but less than the diameter thereof, whereby the tongue may be grasped by hand and lifted to fracture the score lines and remove the cap from the bottle and the like.
Claim 2
Dependent Claim
185 words
An easy-opening crown cap for closing the open end of bottles and the like, wherein the crown cap is of the type having a substantially flat top and a depending annular skirt of crimped configuration having alternate raised and depressed portions, a downwardly and outwardly inclined tongue on the cap projecting below a bottom edge portion of the skirt, said tongue having a plurality of longitudinally extending reinforcing ribs of a length slightly greater than the crimps in the skirt, and a lower end edge portion of the tongue being warped to reinforce the tongue, said cap having a pair of circumferentially spaced apart notches extending upwardly from a lower edge of the skirt in registry with opposite edges of the tongue, and a pair of weakened score lines extending upwardly from the notches across the skirt and across the flat top of the cap a distance greater than the radius of the cap but less than the diameter thereof, whereby the tongue may be grasped by hand and lifted to fracture the score lines and remove the cap from the bottle and the like.
Claim 3
Dependent Claim
34 words
A cap as in claim 1, wherein the score lines converge into close proximity with one another and then extend parallel to one another over the major portion of the width of the cap.
Claim 4
Dependent Claim
18 words
A cap as in claim 1, wherein the score lines converge toward one another in substantially straight lines.
Claim 5
Dependent Claim
19 words
A cap as in claim 1, wherein the score lines are parallel to one another substantially throughout their length.
Claim 6
Dependent Claim
24 words
A cap as in claim 1, wherein the score lines are arcuate and are convergent adjacent their midportions and divergent at their opposite ends.
Claim 7
Dependent Claim
24 words
A cap as in claim 1, wherein the score lines are arcuate and are convergent at their opposite ends and divergent at their midportions.
References Cited (Backward Citations)
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Cited
US3258149A
Cited
US3301426A
Cited
US3397661A
Cited
US3382997A
Cited
US3447710A
Cited
US3785519A
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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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |