Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A metal cap for closing a container, particularly a glass container, comprising a cap base which is adapted to extend over the container mouth and beyond the outer edge thereof and which, in the unstressed condition, that is to say before the cap is secured on the container, is originally curved inwards and is adapted to be first resiliently curved outwards by anchoring forces acting on its periphery when the cap is secured to the container, and then to be curved inwards again by reduced pressure in the container, and An encircling cap skirt which is adapted to be secured to the container by a screw or bayonet connection, is separate from the cap base, and engages over an edge portion of the latter, wherein in its region which projects beyond the outer edge of the container mouth the cap base has a downwardly directed conical edge portion which widens in the downward direction and on which rests a rolled-in bead provided on the upper end of the encircling cap skirt at a distance from the outer edge of the container mouth.
Claim 2
Dependent Claim
182 words
A metal cap for closing a container, particularly a glass container, comprising a cap base which is adapted to extend over the container mouth and beyond the outer edge thereof and which, in the unstressed condition, that is to say before the cap is secured on the container, is originally curved inwards and is adapted to be first resiliently curved outwards by anchoring forces acting on its periphery when the cap is secured to the container, and then to be curved inwards again by reduced pressure in the container, and An encircling cap skirt which is adapted to be secured to the container by a screw or bayonet connection, is separate from the cap base, and engages over an edge portion of the latter, wherein in its region which projects beyond the outer edge of the container mouth the cap base has a downwardly directed conical edge portion which widens in the downward direction and on which rests a rolled-in bead provided on the upper end of the encircling cap skirt at a distance from the outer edge of the container mouth.
Claim 3
Dependent Claim
22 words
A metal cap according to claim 1, wherein the portion of the encircling cap skirt adjoining the rolled-in bead is tapered conically.
Claim 4
Dependent Claim
61 words
A metal cap according to claim 1, wherein the circle of contact between the rolled-in bead of the encircling cap skirt and the outer conical edge portion of the cap base, over which the said skirt engages, lies approximately in the plane of the container mouth or preferably slightly below this plane, when the cap is fully secured on the container.
Claim 5
Dependent Claim
30 words
A metal cap according to claim 1, wherein the conical edge portion of the cap base terminates at the bottom in a stiffening flange bent over in the outward direction.
Claim 6
Dependent Claim
184 words
A metal cap according to claim 1, wherein the cap base has an annular transition portion in its region intended to rest on the container mouth between the middle portion of the cap base, which is orginally curved inwards and which is adapted to be curved outwards, and the conical edge portion of the cap base, this transition portion being originally, that is to say before the securing of the cap on the container, inclined inwards and downwards in relation to the axis of the container mouth and on the securing of the cap on the container this transition portion is adapted to pivot about the edge of the container mouth, first through the action of the anchoring pressure applied by the encircling cap skirt, into a position in which it is inclined outwards and downwards in relation to the axis of the container mouth and then, through the action of the reduced pressure in the container and of the consequent inward curving of the cap base, into an end position which is approximately horizontal or perpendicular to the axis of the container mouth.