Cover for a container

Details Cover for a container Cover for a container

1997-11-05

1999-05-25

Cronin, Stephen K.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

220321, B65D 4500

Patent

active

059062894

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a lid for a container, more particularly, a lid for a container with a bent peripheral rim.
2. Prior Art
Such a lid is known from the DE-C-360 479 comprising a closing-mechanism which can be mounted on the container independently from the lid. The closing-belt comprises a rubber-ring, which is mounted around the lid rim and the container rim, and, finally, is tightly closed with the means of a lever-mechanism. Providing of a pressure-tight junction is necessary, if a container is held under pressure, as in the case of a cooking vessel where vapor pressure is used advantageously to reduce cooking times.
In known solutions, the junction between the lid and the container is achieved by a series of lock elements which are attached to the lid, and which after positioning of the lid on the container, by means of a rotating, pivoting or gliding movement, grip under-neath the bent peripheral container rim, such that, in conjunction with an elastic joint, an over pressure can be built up in the interior of the container. These better known solutions have the disadvantages of being expensive and requiring complicated handling. The object of the invention is therefore to provide a lid for a container, in particular a cooking vessel, which is especially easy to handle.


SUMMARY OF THE INVENTION

According to the invention, the task is accomplished by a lid for a container with a bent peripheral container rim which includes a closing-mechanism acting peripherally at the rim of the container. An open, metallic closing-belt with elastic properties is lodged peripherally at the lid's rim, and the closing-belt develops a spring force which increases upon enlargement of the diameter of the closing-belt. In its rest position, the closing-belt clamps together the end region of a part of the peripheral container rim and the end region of a circular, bent part of the lid rim. The closing-mechanism includes means to enlarge the closing-belt against its own spring force. Further advantageous variants of the invention are described below.
In the following, some exemplary embodiments of the invention are explained more in detail with the help of drawings.
FIG. 1 shows a schematic representation (section along the axis, in the symmetry plane) of a first embodiment of a lid for a cooking vessel according to the invention, with a pincer-closing-mechanism in closed position,
FIG. 2 shows a schematic representation of the same first embodiment, with the closing-mechanism in open position,
FIGS. 3 and 4 show schematic partial representations of this first embodiment (section orthogonal to the symmetry axis) with the pincer-closing-mechanism in closed and open positions respectively,
FIG. 5 shows a schematic representation (section along the axis, in the symmetry plane) of a second embodiment of a lid for a cooking vessel according to the invention, with a pivoting-handle-closing-mechanism in closed position,
FIGS. 6 and 7 show schematic partial representations of this second embodiment (section orthogonal to the symmetry axis), with the pivoting-handle-closing-mechanism in closed and open positions respectively,
FIG. 8 shows a schematic representation (section along the axis, in the symmetry plane) of a third embodiment of a lid for a cooking vessel according to the invention, with a gripping-handle-closing-mechanism in closed position,
FIGS. 9 and 10 show schematic partial representations of this third embodiment (section orthogonal to the symmetry axis), with the gripping-handle-closing-mechanism in closed and open positions respectively,
FIG. 11 shows a schematic representation (section along the axis, in the symmetry plane) of a fourth embodiment of a lid for a cooking vessel according to the invention, with an exterior-handle-closing-mechanism in closed position,
FIGS. 12 and 13 show schematic partial representations of this fourth embodiment (section orthogonal to the symmetry axis), with the exterior-handle-closing-mechanism in closed and open

REFERENCES:
patent: 2133060 (1938-10-01), Stephens
patent: 2152634 (1939-04-01), Cornell
patent: 2191975 (1940-02-01), Stephens
patent: 4294377 (1981-10-01), Chen
patent: 4711366 (1987-12-01), Chen
patent: 5427014 (1995-06-01), von der Becke et al.

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