Patent US4976370A successfully refreshed from Google Patents.
US4976370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container and sealing lid
Assignee: Zeta Consumer Products Corp
•
Filing: 1990-01-12
•
Granted: 1990-12-11
•
Expires: 2010-01-12
Abstract
Abstract A container and complementary sealing lid both of which are of plastic, in which the container has a sealing bond on its wall around its upper peripheral edge of two different radii, the larger one on the outside, and the lid has a U-shaped peripheral sealing channel with inner and outer side walls and an upper wall joining the side walls. The inner surface of the upper wall is formed with areas of two different radii with the larger on the inner surface of the channel outer side wall and the container sealing bead and lid sealing channel being sized so that sealing engagement occurs between the bead and channel smaller radii areas and there is a clearance between the other parts of the bead and channel to aid in fastening and removing the lid.
Inventors
- 👤 Timothy S. Cassel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:00
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/22; 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; B65D2543/00342; B65D2543/00351; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00555; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00629; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796; B65D2543/00824; B65D2543/00833; B65D2543/00842
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
233 words
The combination of a container having an open top and a lid for sealing said open top comprising: a container with a bottom wall and an upwardly extending continuous wall extending therearound said container having a sealing bead around the upper peripheral edge of the wall, said sealing bead having an outer surface formed of two curved areas of different radii relative to the center line of the wall with the area of larger radius facing the outside of the wall, a lid of the same general overall shape as the upper peripheral edge of the container, said lid having a downwardly extending generally U-shaped sealing channel for mating with the container sealing bead, said lid sealing channel having outer and inner side walls joined by an upper wall each having inner surfaces, the inner surface of the lid sealing channel upper wall between the inner surfaces of the inner and outer walls formed of areas of two different radii with the larger radius area being adjacent the inner surface of the channel outer side wall, said container sealing bead and said sealing channel sized so that the sealing occurs on the part of the sealing bead and sealing channel radii of smaller diameter and there is a clearance between all other parts of the sealing bead and sealing channel to aid in fastening the lid to and removing it from the container.
Claim 2
Dependent Claim
233 words
The combination of a container having an open top and a lid for sealing said open top comprising: a container with a bottom wall and an upwardly extending continuous wall extending therearound said container having a sealing bead around the upper peripheral edge of the wall, said sealing bead having an outer surface formed of two curved areas of different radii relative to the center line of the wall with the area of larger radius facing the outside of the wall, a lid of the same general overall shape as the upper peripheral edge of the container, said lid having a downwardly extending generally U-shaped sealing channel for mating with the container sealing bead, said lid sealing channel having outer and inner side walls joined by an upper wall each having inner surfaces, the inner surface of the lid sealing channel upper wall between the inner surfaces of the inner and outer walls formed of areas of two different radii with the larger radius area being adjacent the inner surface of the channel outer side wall, said container sealing bead and said sealing channel sized so that the sealing occurs on the part of the sealing bead and sealing channel radii of smaller diameter and there is a clearance between all other parts of the sealing bead and sealing channel to aid in fastening the lid to and removing it from the container.
Claim 3
Dependent Claim
30 words
The combination of claim 1 wherein the transition of the two different radii of the sealing bead occurs at an extension of the enter line of the container wall thickness.
Claim 4
Dependent Claim
40 words
The combination of claim 2 wherein the point of sealing of the bead and the channel begins at approximately said extension of the center line of the container wall thickness and continues inwardly along said bead and channel smaller radii.
Claim 5
Dependent Claim
45 words
The combination of claim 1 wherein the lid further comprises a shoulder on the mid part of the inner surface of the sealing channel outer side wall below the curved section of larger radius to ride over the outer surface of the container sealing bead.
Claim 6
Dependent Claim
33 words
The combination of claim 4 wherein the portion of the lid sealing channel outer wall below said shoulder flares outwardly to provide an entrance way for the sealing bead into the sealing channel.
Claim 7
Dependent Claim
21 words
The combination of claim 2 wherein the container wall is outwardly inclined from the vertical relative to the container bottom wall.
Claim 8
Dependent Claim
19 words
The combination of claim 1 wherein the container and the lid are formed of a relatively stiff polypropylene copolymer.
Claim 9
Dependent Claim
43 words
The combination of claim 2 wherein the upper wall of the sealing channel has a reduced thickness in the area of the container wall center line extension to increase the flexing of the sealing channel as it is applied over the container bead.
Claim 10
Dependent Claim
54 words
The combination of claim 4 wherein the upper wall of the sealing channel has a reduced thickness in the area of the container wall center line extension to increase the flexing of the sealing channel as the shoulder on the inner surface of the sealing channel outer wall rides over the container sealing band.
References Cited (Backward Citations)
US4165020A
Cited
US4209107A
Cited
US4296871A
Cited
US4293080A
Cited
US4520943A
Cited
US4660735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |