US4244490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conical can end with push down gate
Assignee: Individual
•
Filing: 1979-08-06
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Granted: 1981-01-13
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Expires: 1999-08-06
Abstract
Abstract A conical can end wherein the central expansion panel of the end is drawn to form a conical frustum with a panel at the apex end thereof, an aperture in the apex panel, a push-down gate beneath this aperture and a short hinge means interconnecting the gate with the apex panel.
Inventors
- 👤 Gerald B. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:15
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D2205/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A conical can end having a central expansion panel drawn to form a conoid-shaped frustum with a panel at the apex end thereof; an aperture in the apex panel; a push-down gate in the aperture; and a hinge means integrally interconnecting said gate with the apex panel; and wherein said aperture in the apex panel includes an underfolded spacer strip under the apex panel, a reverse underfold at the outward edge of the spacer strip joining with said gate, and a score cut in the gate at the periphery thereof to define the gate, the score cut extending about the gate from each side of the hinge means.
Claim 2
Dependent Claim
108 words
A conical can end having a central expansion panel drawn to form a conoid-shaped frustum with a panel at the apex end thereof; an aperture in the apex panel; a push-down gate in the aperture; and a hinge means integrally interconnecting said gate with the apex panel; and wherein said aperture in the apex panel includes an underfolded spacer strip under the apex panel, a reverse underfold at the outward edge of the spacer strip joining with said gate, and a score cut in the gate at the periphery thereof to define the gate, the score cut extending about the gate from each side of the hinge means.
Claim 3
Dependent Claim
87 words
A conoid-shaped can end having a central expansion panel drawn to form a conical frustum with a panel at the apex end thereof; an aperture in the apex panel, said aperture comprising a short lip upstanding from the apex panel with an outer portion upfolded from the apex panel, an inner wall portion, and a reverse fold at the top of the lip interconnecting the inner and outer wall portions; a push-down gate in said aperture; and a hinge means interconnecting said gate with said apex panel.
Claim 4
Dependent Claim
87 words
A conoid-shaped can end having a central expansion panel drawn to form a conical frustum with a panel at the apex end thereof; an aperture in the apex panel, said aperture comprising a short lip upstanding from the apex panel with an outer portion upfolded from the apex panel, an inner wall portion, and a reverse fold at the top of the lip interconnecting the inner and outer wall portions; a push-down gate in said aperture; and a hinge means interconnecting said gate with said apex panel.
Claim 5
Dependent Claim
50 words
The can end defined in claim 2 wherein: the bottom of the inner wall portion terminates as an underfolded spacer strip under the apex panel; a reverse underfold at the outward edge of the spacer strip joining with the gate; and a score cut in the gate at its periphery.
Claim 6
Dependent Claim
52 words
The can end defined in claim 2 wherein a gate panel joins the lip at an infold at the bottom of the inner wall portion, and a score cut at the infold to define the gate, the score cut extending about the gate panel from each side of the aforesaid hinge means.
Claim 7
Dependent Claim
20 words
The can end defined in claim 4 wherein the lip is tilted inwardly to prevent upward movement of the gate.
Claim 8
Dependent Claim
42 words
The can end defined in claim 5 wherein the infold at the bottom of the inner wall portion is an 180 degree fold to direct an outward portion of the gate panel upwardly and place it snugly against the inner wall portion.
Claim 9
Dependent Claim
36 words
The can end defined in claim 6 wherein the outer edge of the score cut is folded against the underside of the apex panel and against the radius at the upfold of the outer wall portion.
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) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |