US3759415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pail
Assignee: Nosco Plastics Inc
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Filing: 1972-06-13
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Granted: 1973-09-18
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Expires: 1992-06-13
Abstract
Abstract A plastic pail having a rim with integral, upwardly diverging peripheral lips received in and compressed by a downwardly presented peripheral groove in a cover to make a fluid tight seal.
Inventors
- 👤 H Cloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0212; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/0012; B65D2543/00175; B65D2543/00194; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/005; B65D2543/00537; B65D2543/00555; B65D2543/00574; B65D2543/00583; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00657; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/00759; B65D2543/00768; B65D2543/00787; B65D2543/00805; B65D2543/00953; B65D2543/0099
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A plastic pail having a rim with integral peripheral lips diverging upwardly from the rim, a cover having a downwardly presented peripheral groove telescoped over the upper edges of the lips, said groove having inner wall surfaces spaced closer together than the unstressed spacing of the uppermost outer edges of the lips which are compressed by said wall surfaces to effect a fluid tight seal between the cover and pail by static deflection of the lips, and said groove having a bottom wall spaced above said edges of the lips whereby the pressure of fluid trapped between said lips and said bottom wall aids in effecting said fluid tight seal by exerting a spreading force on the lips in the direction to move the lips into tighter engagement with said wall surfaces.
Claim 2
Dependent Claim
132 words
A plastic pail having a rim with integral peripheral lips diverging upwardly from the rim, a cover having a downwardly presented peripheral groove telescoped over the upper edges of the lips, said groove having inner wall surfaces spaced closer together than the unstressed spacing of the uppermost outer edges of the lips which are compressed by said wall surfaces to effect a fluid tight seal between the cover and pail by static deflection of the lips, and said groove having a bottom wall spaced above said edges of the lips whereby the pressure of fluid trapped between said lips and said bottom wall aids in effecting said fluid tight seal by exerting a spreading force on the lips in the direction to move the lips into tighter engagement with said wall surfaces.
Claim 3
Dependent Claim
31 words
The pail of claim 1 in which the lips and groove in plan view consist of alternate straight and curved sections joined end to end around the periphery of the rim.
Claim 4
Dependent Claim
34 words
The pail of claim 1 in which the rim of the pail has at its outer edge a vertical peripheral flange with the lips diverging upwardly from the upper edge of said vertical flange.
Claim 5
Dependent Claim
32 words
The pail of claim 3 in which the rim of the pail has an outwardly extending horizontal flange and the vertical peripheral flange is at the outer edge of said horizontal flange.
Claim 6
Dependent Claim
25 words
The pail of claim 2 in which the cover has hold down members and the pail has detent means both located on said straight sections.
Claim 7
Dependent Claim
16 words
The pail of claim 5 in which the hold down members are hinged to the cover.
Claim 8
Dependent Claim
24 words
The pail of claim 2 in which at least one of the straight sections has an inwardly extending vertical convolution at its mid section.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |