Press type closure

Claim 2

A locally distortable integrally molded thermoplastic closure contractably and distensibly constructed and having an elastic memory such that it is adapted to hermetically seal an openmouthed member and comprising: a. a center main wall being substantially formed of a plurality of corrugations emanating from a center portion thereof and tapering upwardly and outwardly from the plane of said center portion to a terminal peripheral edge, said center main wall being adapted for the application of downward pressure to said center portion in such manner that said corrugations tend to collapse upon one another and substantially uniformly displace said peripheral edge until the closure is easily positionable on an open-mouthed member; and, b. an integral substantially uniform smooth surfaced upwardly outwardly sloping means positioned around said peripheral edge of the center main wall at a position proximate the uppermost portion of said corrugations said means being displaceable in like manner with said peripheral edge such that at least a portion of said means is closely engageable with and sealable against the walls of an open-mouthed member due to the resiliency and elastic memory of said closure upon the discontinuance of applied downward pressure to said center main wall.

Claim 3

A locally distortable integrally molded thermoplastic closure contractably and distensibly constructed and having an elastic memory such that it is adapted to hermetically seal an open-mouthed member and comprising a. a center main wall including a plurality of contiguous flutes radially emanating from a center portion thereof and tapering upwardly and outwardly from the plane of said center portion to a terminal peripheral edge, said center main wall being further characterized in that said center portion and at least portions of the peripheral edge lie in different but substantially parallel planes of reference adapting said center main wall for the application of downward pressure to the center portion thereof in such manner that said flutes tend to collapse upon themselves and substantially uniformly displace said peripheral edge until said closure is easily positionable on an open-mouthed member; and, b. integral, substantially uniform and upwardly outwardly sloping side wall means positioned around said peripheral edge of the center main wall, said side wall means being displaceable in like manNer with said peripheral edge such that at least a portion of said side wall means is closely engageable with and sealable against the walls of an open-mouthed member due to the resiliency and elastic memory of said closure upon the discontinuance of applied downward pressure to said center main wall.

Claim 4

A locally distortable integrally molded thermoplastic closure contractably and distensibly constructed and having an elastic memory such that it is adapted to hermetically seal an open-mouthed member and comprising a. a center main wall including a plurality of contiguous flutes radially emanating from a center portion thereof and tapering upwardly and outwardly from the plane of said center portion to a terminal peripheral edge, said center main wall being further characterized in that said center portion and at least portions of the peripheral edge lie in different but substantially parallel planes of reference adapting said center main wall for the application of downward pressure to the center portion thereof in such manner that said flutes tend to collapse upon themselves and substantially uniformly displace said peripheral edge until said closure is easily positionable on an open-mouthed member; and, b. integral, substantially uniform and upwardly outwardly sloping side wall means positioned around said peripheral edge of the center main wall, said side wall means being displaceable in like manNer with said peripheral edge such that at least a portion of said side wall means is closely engageable with and sealable against the walls of an open-mouthed member due to the resiliency and elastic memory of said closure upon the discontinuance of applied downward pressure to said center main wall.

Claim 5

A contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal an open-mouthed container and comprising: a. a center main wall including laterally extending corrugated portions tapering upwardly and outwardly from the plane of a centralmost area to a terminal peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, b. an upstanding outwardly sloping substantially uniformly disposed smooth surfaced sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally and downwardly applied force on the center main wall enabling placement of said closure upon an open-mouthed container, and which is distensibly responsive to any reduction in said force.

Claim 6

A contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal an open-mouthed container and comprising: a. a center main wall including laterally extending corrugated portions tapering upwardly and outwardly from the plane of a centralmost area to a terminal peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, b. an upstanding outwardly sloping substantially uniformly disposed smooth surfaced sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally and downwardly applied force on the center main wall enabling placement of said closure upon an open-mouthed container, and which is distensibly responsive to any reduction in said force.

Claim 7

A contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal an open-mouthed container and comprising: a. a center main wall being formed substantially of laterally extending corrugated portions which are sectorially oriented and dimensionally increase in size as they extend toward and terminate in a peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, b. a substantially uniform upwardly outwardly sloping integral sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally applied downward force on the center main wall enabling placement of said closure upon an open-mouthed container, and which is distensibly responsive to any reduction in said force.

Claim 8

A contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal an open-mouthed container and comprising: a. a center main wall being formed substantially of laterally extending corrugated portions which are sectorially oriented and dimensionally increase in size as they extend toward and terminate in a peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, b. a substantially uniform upwardly outwardly sloping integral sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally applied downward force on the center main wall enabling placement of said closure upon an open-mouthed container, and which is distensibly responsive to any reduction in said force.

Claim 9

In combination an open-mouthed container and a locally distortable, contractably and distensibly constructed plastic closure having an elastic memory such that it is adapted to hermetically seal said container and comprising: a. a container including a projecting wall construction forming the open mouth thereof and in which at least parts of said projecting walls are undercut adjacent the upper edge thereof; b. a closure having a center main wall being substantially formed of a plurality of corrugations emanating from a center portion thereof and tapering upwardly and outwardly from the plane of said center portion to a terminal peripheral edge, said center wall being adapted for the application of downward pressure to said center portion in such manner that said corrugations tend to collapse upon one another and substantially uniformly displace said peripheral edge until the closure is easily positionable on said container; and, c. an integral substantially uniformly disposed upwardly outwardly sloping means positioned around said peripheral edge of the center main wall at a position proximate the uppermost portion of said corrugations, said means being displaceable in like manner with said peripheral edge, such that at least a portion of said means is closely engageable with and sealable against the walls of said container below said undercut due to the resiliency and elastic memory of said closure upon the discontinuance of downwardly applies pressure to said center main wall.

Claim 10

In combination an open-mouthed container and a locally distortable, contractably and distensibly constructed plastic closure having an elastic memory such that it is adapted to hermetically seal said container and comprising: a. a container including a projecting wall construction forming the open mouth thereof and in which at least parts of said projecting walls are undercut adjacent the upper edge thereof; b. a closure having a center main wall being substantially formed of a plurality of corrugations emanating from a center portion thereof and tapering upwardly and outwardly from the plane of said center portion to a terminal peripheral edge, said center wall being adapted for the application of downward pressure to said center portion in such manner that said corrugations tend to collapse upon one another and substantially uniformly displace said peripheral edge until the closure is easily positionable on said container; and, c. an integral substantially uniformly disposed upwardly outwardly sloping means positioned around said peripheral edge of the center main wall at a position proximate the uppermost portion of said corrugations, said means being displaceable in like manner with said peripheral edge, such that at least a portion of said means is closely engageable with and sealable against the walls of said container below said undercut due to the resiliency and elastic memory of said closure upon the discontinuance of downwardly applies pressure to said center main wall.

Claim 11

In combination an open-mouthed container and contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal said open-mouthed container and comprising: a. a container including a projecting wall construction forming the open mouth thereof and in which at least parts of said projecting walls are undercut adjacent the upper edge thereof; b. a closure having a center main wall including laterally Extending corrugated portions tapering upwardly and outwardly from the plane of a central-most area to a terminal peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, c. an integral substantially uniform upwardly outwardly sloping sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally applied downward force on the center main wall enabling placement of said closure upon the open-mouthed container and which is distensibly responsive to any reduction in said force, such that it seals against said projecting walls below said undercut.

Claim 12

In combination an open-mouthed container and contractable and distensible closure member having an elastic memory such that it is adapted to hermetically seal said open-mouthed container and comprising: a. a container including a projecting wall construction forming the open mouth thereof and in which at least parts of said projecting walls are undercut adjacent the upper edge thereof; b. a closure having a center main wall including laterally Extending corrugated portions tapering upwardly and outwardly from the plane of a central-most area to a terminal peripheral edge, at least segments of said edge lying in a different plane than that of the central-most area of said central main wall; and, c. an integral substantially uniform upwardly outwardly sloping sealing member positioned around said peripheral edge, which member is distortably responsive to a substantially centrally applied downward force on the center main wall enabling placement of said closure upon the open-mouthed container and which is distensibly responsive to any reduction in said force, such that it seals against said projecting walls below said undercut.