US 4,541,537 AGranted

Fluid tight seal for container

AssigneeCity of Hope National Medical Center

InventorClifford L. Sailor

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Abstract

A seal for a container having a straight cylindrical neck with an opening in the neck includes an upper sealing member which fits over the top of the neck and down a portion of the cylindrical surface of the neck. The top sealing member has a tapered edge on its bottom which accepts an indentically tapered edge of an intermediate sealing member which engages it. The intermediate sealing member also has a further tapered edge which accepts a tapered edge of a bottom sealing member which mates with it. A lower locking member goes around the cylindrical neck of the bottle and is shaped such that a portion of it is spaced away from the cylindrical neck of the bottle to form a cavity in which fits the intermediate and lower sealing members. A top locking member goes over the top sealing member and both a skirt on the top sealing member and the top locking member also fit within the cavity of the lower locking member. Threads between the upper and lower locking member hold the structure together.

Claims20

Dependent claims

In combination with a container having a cylindrical neck with an opening in the top of the neck, a seal which comprises:

top seal means, said top seal means sized and shaped so as to fit over the top of said cylindrical neck to close said opening and further to extend down and around a portion of said cylindrical neck and terminating in a sealing edge;
intermediate seal means sized and shaped so as to fit around said cylindrical neck below said top seal means, said intermediate seal means having an upper sealing edge and a lower sealing edge, said upper sealing edge of said intermediate seal means mating with said sealing edge of said top seal means;
bottom seal means sized and shaped so as to fit around said cylindrical neck below said intermediate seal means, said bottom seal means having an upper sealing edge, said upper sealing edge of said bottom seal means mating with said lower sealing edge of said intermediate seal means;
bottom locking means fitting around said cylindrical neck and having at least a portion thereof spaced from said cylindrical neck so as to form a cavity between said bottom locking means and said cylindrical neck, at least said bottom and said intermediate seal means locatable in said cavity, said bottom locking means including engagement means for engaging said said bottom seal means and holding said bottom seal means with respect to said bottom locking member, said bottom locking means further including joining means;
top locking means sized and shaped so as to fit around said top seal means and having a portion thereof extending into said cavity, said top locking means including engagement means for engaging said top seal means and holding said top seal means with respect to said top locking means, said top locking means further including joining means for joining said top locking member to said bottom locking member.

2 more elements

In combination with a vessel having a cylindrical neck with an opening in the top of said neck, a seal which comprises:

a top sealing member, said top sealing member having a cap portion and a skirt portion integrally formed together, said cap portion sized and shaped to fit over said top of said neck covering said opening, said skirt portion sized and shaped to fit around of said cylindrical neck and extend part way down said cylindrical neck toward said vessel, said skirt terminating in a circumferentially extending skirt edge, said skirt edge tapering radially outwardly and axially downwardly away from said cap so as to form an acute angle with said cylindrical neck;
an intermediate sealing ring sized and shaped so as to fit around said neck below said top sealing member, said intermediate sealing ring having circumferentially extending upper and lower edges, said upper edge tapering radially inwardly and axially upwardly toward said top sealing member so as to be matable with said skirt edge, said lower edge tapering radially outwardly and axially downwardly away from said top sealing member so as to form an acute angle with said cylindrical neck;
a bottom sealing ring sized and shaped to fit around said cylindrical neck below said intermediate sealing ring, said bottom sealing ring having a circumferentially extending upper edge tapering radially inwardly and axially upwardly towards said intermediate sealing ring so as to be matable with said lower edge of said intermediate sealing ring, said bottom sealing ring further having a circumferentially extending bottom edge;
a top locking member sized and shaped to fit around at least a portion of said top sealing member, said top locking member including a skirt portion circumferentially extending around the outside of said skirt portion of said top sealing member, said top locking member including locking means located around said skirt portion of said top locking member;
a bottom locking member sized and shaped so as to fit around said cylindrical neck and including a portion thereof sized and shaped so as to be spaced away from said cylindrical neck to form a cavity between said portion and said cylindrical neck, said cavity sized and shaped so as to contain said intermediate and said bottom sealing rings and at least a portion of the skirt portion of said top sealing member and said top locking member, said bottom locking member including locking means capable of engaging with and locking with said locking means on said top locking member.

2 more elements

Dependencies are inferred from the claim text.