US3957097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed container
Assignee: Dart Industries Inc
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Filing: 1975-02-26
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Granted: 1976-05-18
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Expires: 1995-02-26
Abstract
Abstract A container and closure combination wherein the closure includes a stepped ledge area formed by two truncated conical sections that produce a structure resiliency enabling the generation of an effective seal between the mating parts.
Inventors
- 👤 James B. Swett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B65D43/0222; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00342; B65D2543/00351; B65D2543/0037; B65D2543/00398; B65D2543/00416; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at between about 3° and 8°; and said closure includes a downwardly disposed skirt having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than the terminal edge portion of said container and is angularly disposed from the vertical at about between 3° and 8° in congruency with said terminal edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip first at an angle of between about 10° and 20° from the horizontal and thereafter at an angle of between about 10° and 20° from the vertical, and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
Claim 2
Dependent Claim
163 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at between about 3° and 8°; and said closure includes a downwardly disposed skirt having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than the terminal edge portion of said container and is angularly disposed from the vertical at about between 3° and 8° in congruency with said terminal edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip first at an angle of between about 10° and 20° from the horizontal and thereafter at an angle of between about 10° and 20° from the vertical, and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
Claim 3
Dependent Claim
29 words
A storage vessel according to claim 1 wherein said planar top wall occupies between about 60 and 70 percent of the total planar area circumscribed by said container closure.
Claim 4
Dependent Claim
33 words
A storage vessel according to claim 1 wherein the polymeric material is characteristically rigid, in its as molded condition, and is selected from the group comprised of polypropylene, high density polyethylene and polyallomer.
Claim 5
Dependent Claim
24 words
A storage vessel according to claim 1 wherein the inside surface of said downwardly disposed skirt includes a second portion intersecting said first portion.
Claim 6
Dependent Claim
20 words
A storage vessel according to claim 4 wherein said second portion angles outwardly from its intersection with said first portion.
Claim 7
Dependent Claim
147 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at about 6°; and said closure includes a downwardly disposed skirt having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than said terminal edge portion and is angularly disposed from the vertical at about 6° in congruency with said edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip first at an angle of about 15° from the horizontal and thereafter at an angle of about 15° from the vertical, and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
Claim 8
Dependent Claim
147 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at about 6°; and said closure includes a downwardly disposed skirt having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than said terminal edge portion and is angularly disposed from the vertical at about 6° in congruency with said edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip first at an angle of about 15° from the horizontal and thereafter at an angle of about 15° from the vertical, and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
Claim 9
Dependent Claim
26 words
A storage vessel according to claim 6 wherein said planar top wall occupies about 65 percent of the total planar area circumscribed by said container closure.
Claim 10
Dependent Claim
135 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at about 6°; and said closure includes a downwardly disposed lip having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than said terminal edge portion and is angularly disposed from the vertical at about 6° in congruency with said edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip at an angle of about 15° from the horizontal and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
Claim 11
Dependent Claim
135 words
A storage vessel comprising in combination a hermetically interengaged container and container closure of like polymeric materials wherein said container includes a sidewall having an upper terminal edge portion that protrudes outwardly from the vertical at about 6°; and said closure includes a downwardly disposed lip having an inside surface a first portion of which, in its molded condition, is dimensionally smaller than said terminal edge portion and is angularly disposed from the vertical at about 6° in congruency with said edge portion so as to pressingly mate therewith, said container closure further incorporating a ledge portion that extends inwardly and upwardly from the upper extremity of said lip at an angle of about 15° from the horizontal and a substantially planar top wall integrally attached to said ledge portion proximate the inner extremity thereof.
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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |