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US 4,880,131 AGranted
Ringless paint container
AssigneeVan Dorn Company
InventorsThomas A. Gallagher, Paul Knowlton, Leon Patarini
Life of this patent
Estimating the term…
Abstract
An especially configured, ringless, container-lid design is disclosed having improved sealing characteristics applicable to paint containers for the consuming public. The rim portion of the container is provided with a tapered, especially shaped wall section terminating in a circular bead which is received in a sealing groove in the lid. The wal section flexes to maintain the seal established between the lid and the bead while sufficiently rigidized to prevent collapse of the container's sidewall. The design disclosed permits easy modification of the container for serially stacking thereof.
Claims17
A cylindrical metal container in combination with a removable, resealable lid comprising;
- (a) said lid having a generally circular configuration with an annular sealing groove formed adjacent its peripheral edge;
- said sealing groove defined by continuous longitudinally-extending inner and outer sealing walls with a bight wall therebetween thus forming an inverted, U-shaped groove;
- (b) said container having a generally cylindrical, longitudinally-extending side wall, a circular bottom wall at one end of said side wall and a generally circular top opening at the other end of said side wall, said container side wall further defined by a configured rim portion adjacent said top end and a generally constant diameter cylindrical body portion extending from said bottom wall to said rim portion;
- (c) said rim portion adapted to receive said lid for closing said top opening and further including (i) said top end of said side wall curled in a bead for sealing engaging said sealing walls of said lid, said outer sealing wall of said lid establishing approximately an annular line contact with said container's bead;
- (ii) a longitudinally-extending sealing wall segment generally parallel to said container's side wall and positioned radially inwardly therefrom adjacent to and depending from said curled bead and adapted to be in contact over a substantial portion of the length thereof with said lid's inner sealing wall to define a longitudinally-extending, frictional sealing area between said inner sealing wall of said lid and said sealing wall segment, and (iii) a frusto conical wall segment extending from said sealing segment to said container's side wall and having rigidizing means formed therein for principally resisting longitudinal deflection of said rim portion.
2 more elements
A cylindrical, metal container-lid combination having
- an open ended cylindrical body rolled from a flat sheet of metal having longitudinal ends resistance welded to form a longitudinal side seam;
- a bottom wall seamed to one end of said cylindrical body to close same, said bottom wall recessed to define a circular area having a first diameter defined by the inside wall of said seam;
- a curled circular bead formed at the other open end of said body;
- a circular lid for removably covering said open end, said lid having a generally flat circular base surface, and an inverted U-shaped annular groove extending away from said flat surface;
- said inverted U-shaped groove having an annular inner sealing wall, an annular outer sealing wall and a bight wall therebetween and adapted to engage said container's bead between said inner and outer wall when covering said open end;
- and
- said diameter of said outer annular wall of said lid slightly less than said first diameter for serially stacking said containers, one on top of the other, so that said bight wall rests in said recess in close proximity to said first diameter whereby a relatively large circumferential bearing area for serially stacking sealed containers is provided.
4 more elements
A metal container in combination with a removable, resealable lid comprising:
- said lid having a generally circular configuration with an annular sealing groove formed adjacent its peripheral edge;
- said sealing groove defined by continuous, longitudinally extending inner and outer side walls with a bight wall therebetween;
- said container having a body portion closed at one end and a rim portion extending from the opposite end of said body portion and terminating in a generally circular top opening, the intersection of said body portion with said rim portion defining a generally cylindrical surface from which said rim portion longitudinally extends;
- said rim portion having a generally frusto-conical wall segment of fixed length and transversely extending radially-inwardly a fixed distance, a longitudinally extending wall sealing segment extending from frusto-conical wall segment to said top opening of said container, said top opening curled in a bead at the end of said sealing segment, said bead extending radially outwardly from said sealing segment and having a diameter less than said radially inward distance of said frusto-conical wall segment;
- said sealing groove of said lid engaging said bead for closing said container, said outer sealing wall of said lid establishing approximately an annular line contact with said bead and said sealing wall segment of said rim portion establishing an annular area contact with said lid's inner side wall substantially along the entire length of said rim portion's sealing wall segment, whereby said lid is sealingly secured to said container;
- and
- rigidizing means formed in said frusto-conical segment of said rim portion principally for strengthening said frusto-conical wall segment against vertical deflection.
4 more elements
Dependencies are inferred from the claim text.