Safety closure

Claim 2

A safety closure for a container mouthpiece having an external screwthread, said safety closure comprising a cap having an internal screwthread mating with said external screwthread of the mouthpiece, and an insertable stopper, said stopper in normal closed position having its upper end adjacent a rim of said mouthpiece, said upper end of the stopper and a top portion of the screwcap each having complementary members co-operating in the manner of a bayonet catch for use of the screwcap as a means for withdrawing the stopper from the container.

Claim 3

A safety closure of a container as claimed in claim 1, wherein the stopper is cylindrical in form and has an open end, said complementary members being in the form of projections which extend radially inward from the cylindrical stopper and in the form of cam-like portions which extend radially outward from the said top portion of the screwcap and being arranged in such a manner that on withdrawal the stopper remains in attachment with the screwcap.

Claim 4

A safety closure for a container mouthpiece as claimed in claim 1 wherein the said stopper is provided with projections on its circumference.

Claim 5

A safety closure as claimed in claim 3, characterized in that said projections comprise a number of circumferential collars axially spaced along the length of the stopper.

Claim 6

A safety closure for a container mouthpiece as claimed in claim 1 wherein the said stopper is in the form of a hollow cylinder one end of which is closed by a partition.

Claim 7

A safety closure for a container mouthpiece as claimed in claim 1 wherein said screwcap incorporates an internal collar which acts to insert the stopper into the mouthpiece of the container below the rim thereof.

Claim 8

A safety closure for a container mouthpiece as claimed in claim 1 and including a cylindrical sleeve which is fitted between the stopper and the mouthpiece and a pouring lip which extends over the rim of the mouthpiece.

Claim 9

A safety closure for a container mouthpiece as claimed in claim 7, wherein the cylindrical sleeve is a cup-like member including a number of retaining members at the lower end thereof, by which means the cup-like member is retained in the mouthpiece of the container.

Claim 10

A safety closure for a container mouthpiece as claimed in claim 8, characterized in that the said retaining members are formed by a perforated partition for insertion into a groove in the lower end of the sleeve which is axially co-incident with an external collar thereon which is separated to form segments by a series of axial slots in the cup-like member and which said segments on insertion of the cup-like member into the container are displaced radially inward such that they pass down the said mouthpiece to reach a position in which they are clear of the mouthpiece and assume their original positions to engage an inteRior portion of the container and in which positions they are fixed by the insertion of the said perforated partition into the said groove.

Claim 11

A safety closure for a container mouthpiece as claimed in claim 9, characterized in that said groove is formed by an annular collar and a number of axially disposed webs, formed on the inner wall of the sleeve.