Molded lid with wave configured central portion
AssigneeContainer Accessories, Inc.
InventorsPaul G. Bordner, Richard P. Brandt
Life of this patent
Estimating the term…
Abstract
A molded lid having an intermediate region configured as a sequence of waves, each of curved cross-section forming successively occurring crests and troughs, and exhibiting amplitudes increasing in value from the lid center toward the rim. The waves terminate at a ring band which is located to slide in adjacency with the inwardly disposed side of a plastic drum. The lid is provided with a polymeric gasket which is retained in position by a retainer band which is insertable in sliding compressive engagement within a retainer cavity.
Claims19
A molded lid for a container having a top structure with an upwardly disposed edge and an inwardly disposed wall surface, comprising:
- a lid top portion having a central region disposed about a lid center axis and an intermediate region extending therefrom to an outer periphery locatable adjacent said container top structure,
- an annular rim structure integrally formed with said top portion at said outer periphery having a concave annular sealing cavity for receiving said container upwardly disposed edge in sealing relationship and having a ring band locatable in adjacency with said inwardly disposed wall surface and extending downwardly therealong when said lid is positioned upon said container;
- and
- said intermediate region being configured as a sequence of a predetermined number of waves, each of curved cross-section and defining successively occurring crests and troughs exhibiting amplitudes therebetween increasing in amplitude value radially outwardly from said lid center axis toward and having a predetermined maximum amplitude value at said ring band, said wave crests defining a shallow outwardly extending dome.
A molded lid for a container having a top structure with an upwardly disposed edge, comprising:
- a lid top portion having a lid center and an intermediate region extending therefrom to an outer periphery locatable adjacent said container top structure;
- an annular rim structure integrally formed with said top portion at said outer periphery, including an annular lid rim having a concave annular sealing cavity for receiving said container upwardly disposed edge in sealing relationship and a retainer cavity located in adjacency with said sealing cavity;
- and
- a gasket having a ring seal portion slidably insertable within said sealing cavity, a retainer band fixed to said ring seal and extensible in sliding, compressive engagement within said retainer cavity.
A molded lid for a container having a top structure with an upwardly disposed edge and an inwardly disposed wall surface, comprising:
- a lid top portion having a central region disposed about a lid center and an intermediate region extending therefrom to an outer periphery locatable adjacent said container top structure;
- an annular rim structure integrally formed with said top portion at said outer periphery, having a ring band locatable in adjacency with said inwardly disposed wall surface, and an annular lid rim with a concave annular sealing cavity for receiving said container upwardly disposed edge in sealing relationship and a retainer cavity located in adjacency with said sealing cavity;
- a gasket having a ring seal portion slidably insertable within said sealing cavity, a retainer band fixed to said ring seal and extensible in sliding, compressive engagement within said retainer cavity;
- and
- said intermediate region being configured as a sequence of a predetermined number of waves, each of curved cross-section and defining successively occurring crests and troughs exhibiting amplitudes therebetween increasing in amplitude value radially outwardly from said lid center toward and having a predetermined maximum amplitude value at said ring band.
A molded lid for a container having a top structure with an upwardly disposed edge, an inwardly disposed wall surface and an annular ledge portion extending outwardly from said inwardly disposed wall surface, comprising:
- a lid top portion having a lid center and an intermediate region extending therefrom to an outer periphery locatable adjacent said container top structure;
- an annular rim structure integrally formed with said top portion at said outer periphery, including an annular lid rim having a concave annular sealing cavity for receiving said container upwardly disposed edge in sealing relationship and an annular retainer cavity located in adjacency with and spaced inwardly from said sealing cavity;
- and
- a gasket having a ring seal portion slidably insertable within said sealing cavity, a retainer band fixed to said ring seal and extensible in sliding, compressive engagement within said retainer cavity, said polymeric gasket further including an annular flap extending from said retainer band engageable with said ledge portion to provide a secondary seal when said lid is in a closing orientation upon said container and is accessible for grasping to effect removal of said gasket from said lid when said lid has been removed from said container.
Dependencies are inferred from the claim text.