DE1879336U - SCREW CAP FOR TUBES. - Google Patents

Description

4S

SS

Dipl.Kfm. Ing.Enst feichtinger in Klag enfurt, Kämt en /

Austria

Screw cap :; for tubes.

The utility model relates to a screw cap For tubes that have a threaded neck on a conical head that is closed by a membrane. To open a tool is arranged in the screw cap of the membrane, against its premature effect on the screw cap breakaway fuse is attached. In known screw caps, such fuses either consist of an annular one Locking piece made of cardboard, which can be removed after loosening the screw connection or made of a thin-walled, fragile, cylindrical spacer ring that breaks when the screw cap is tightened. The one from an annular Locking pieces made of cardboard not only require security a special operation in their manufacture but also in their removal and is therefore of practical use too complicated. The one-piece with the screw connection cylindrical spacer ring is relatively expensive in terms of material and its destruction requires not only one relatively great effort, but includes the risk that the tube itself will be damaged.

The invention eliminates these drawbacks and creates a screw cap, the material cost of which is not significantly increased despite the attachment of the intended fuse and their protection against unintentional opening of the membrane closing the tube is particularly easy and without any danger damage to the tube can be broken away.

The essential feature of the screw according to the invention

several, cap consists in that the fuse is made from y at the lower end thin tongues attached to the screw cap thread. The position and length of the tongues are chosen so that they are on the conical head of the tube as soon as the thread of the Screw connection holds. The tongues have a rounded or beveled end.

The tongues provided according to the invention as a safety device slide on the cone surface when the plague is drawn of the head of the (Hube outwards and therefore break particularly easily off. Sliding off can be made easier by rounding or chamfering the ends of the tongues.

In the context of the invention, the tool is for cutting

the membrane through an oblique .Sand a hollow, into the

G-thread neck of the tube engaging plug formed, k -

the one with its cutting edge when the tongues hit the

conical tube head still "is. Thus, it will be provided ^{that the Durehtrennen the membrane not un-" in distance from the membrane is introduced absiehtigt before have been stopped by the intentional tightening screw the tongues.

Further details of the tube closure cap according to the invention are explained in more detail with reference to the drawing, which an "example embodiment of a screw cap according to the invention for tubes schematically illustrates in cross section.

A tube for sterile intake, for example of condensed milk, has a threaded neck 1, which is closed by a membrane 2, and a conical head 3. The threaded neck 1 is provided with an external thread 4, onto which a screw cap 5 with thread 6 can be screwed on. The screw cap 5 is provided with a hollow Yersehlußpfropfen 7 for the tube neck 1. Due to the inclined formation of the edge of the

-1

plug 7 is a cutting edge 8 for severing the Membrane 2 is formed.

In order to prevent unintentional severing of the membrane 2, a protective cap 5 is provided in the context of the invention Fuse arranged, which consists of tongues 9, which are attached to the underside of the lock, e.g. on the one that carries the G-winch 6 Part, are arranged. At least three such tongues 9 are expediently provided. The position and length of the tongues 9 are chosen so that they are with the conical head 3 of the tube

come into contact as soon as the threaded neck 1 of the tube head the screw cap holds. In this position 2 game is expediently arranged between the cutting edge 8 and the membrane, so that the separation of the membrane 2 only begins when the screw cap is tightened and the tongues 9 slide outwards

; Abort V on the inclined tube head 3, "slide around this outward ί easier, the ends of the tongues 9 are expedient ι: moderately rounded or beveled.

Claims (2)

Protection claims: \ 1.) Very robbery cap for practicing, whose g-neck on a conical head arranged and closed by a membrane ¹ """and whose screw cap is a tool for cutting through the ι ' Contains membrane, against its premature action the screw cap has a fuse to be broken, thereby identifying shows that the fuse consists of several tongues (9) attached to the lower hand of the screw cap (5). 2.) screw cap according to claim 1, characterized in that .111 " that the position and length of the tongues (9) is chosen so that they impinge on the conical head (3) of the exercise as soon as the ; G-thread of the screw connection (5) holds. ,! ■ 3.) Very robbery cap according to claim 1 or 2, characterized in that that the tongues (9) have a rounded or beveled f, end. h 4.) screw cap according to one of claims 1-3 »thereby ge indicates that the tool for severing the membrane by ^l "* a sharp edge of a hollow, in the threaded neck (1) of the η,
^v ! over engaging plug (7) is formed with its cutting edge (8) when the tongues (9) hit the ί '. "■■" ■■ conical tube head (3) still at a distance from the membrane (7) lies. '-...- .. ■