US1925926A - Self-sealing paste tube cap - Google Patents

Description

Sept. 5, 1933. KUN E 1,925,926

SELF SEALING PASTE "I UBE CAP Filed March 19, 1932 Patented Sept. 5, 1933 UNITED srArEs PATENT orrrce 1,925,926 saw-samnorasrs TUBE car Conrad Kunkel, Oceanside, Lori: Island, N. Y. Application ma 1932. Serial No. 599,966 2 claims. (01. 221+) This invention relates toa self sealing tooth paste tube and has for an object to provide an improved self sealing tooth paste tube, equally suitable for shaving cream, salves' or other types of paste, which will open automatically whenever pressure is applied to exude the paste therein and will close to seal the tube as soon as the pressure is released.

A further object of this invention is to provide an improved self sealing paste tube. cap which may be applied to any conventional paste tube thus converting a regular tube into a self sealing tube. 1

Still a further object of this invention is to provide an improved combination self sealing cap and valve-which may be applied to any conventional paste tube, making the same a self sealing tube.

With the foregoing and other objects in view, as will hereinafter become apparent, this invention comprises the constructions, combinations and arrangements of parts hereinafter set forth, disclosed and shown on tl eaccornpr ny ing drawing. In this drawing,

Figure l is a vertical section of a collapsible tube showing self sealing valve, said valve being closed in this figure.

Figure 2 is a sectional view similar to Figure l, but showing the sealing valve in open po= sition.

Figure 3 is a top plan view of Figure i showing the Emmi-spherical valve closed.

Figure d is an enlarged plan view of the hernispherical valve, and

Figure 5 is a sectional view 5-5 of Figure There is shown at 10 a conventional collapsibletube having the usual neck 11 and discharge nozzle 12, which is threaded in the usual manner as at 13.

Asap it having an opening 15 therein is threaded on the threads 13 of the nozzle 12. The cap is will be formed preferably as shown, having the threaded portion 16 and an outer plate portion 1'? of springy material, the plate 17 being separated from the threaded portion 16 by an internal flange 18. A spider member comprising a ring 19 is adapted to fit under the flange 18 on the edge of the nozzle 12 and has a non fiexible bridge 26 holding anemispherical valve 21 centrally thereof below the opening 15.

To assemble this self sealing tooth paste cap the ring 19 is placed on the edge of the nozzle 12 and the cap 14 threaded thereover until the taken on line flange 18 comes in contact with the ring 19 and presses securely against the end of nozzle 12-. Obviously, the tube may be initially provided with this type of cap or this type of cap may be substituted for the conventional cap initial-,- ly provided therefor. When there is no pressure placed on the body of the collapsible tube 10, the plate 17 will remain normally fiat, thus bringing the opening 15 against the sealing 'valve 21 securely excluding the air therefrom and preventing any waste of the material 22 in the tube. l

When it is desired to project. the paste or other material 22 from the tube it is only necessary to press thecollapsiblel tube 10, This will cause the material 22 to press against the bottom of the springy plate 17 causing it to 'nd in the position shown in Figure 2, thereby spacing the orifice 15 away from the valve 21 and allowing the material 22 toflow therethrough until the pressure on the tube 10 is released, whereupon the spring plate 1'? will again spring baclr to the flat position again sealing the tube.

The novel features and the operation of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail, it is obvious that this is not to be considered limited to the exact form disclosed and that changes may be made therein within the scope of what is claimed without departing from the spirit of the invention.

Having thus set'forth and disclosed the nature of this invention, what is claimed is:

1. A self sealing tube comprising in combination a discharge nozzle, a cap, means for securing said cap on said nozzle, a spring plate forming the closed end of said cap, means for spacing said spring plate from the end of said nozzle, comprising an internally projecting horizontal flange on said cap, a valve, said spring plate having an opening therethrough cooperating with said valve to prevent discharge of the contents from said tube when the plate is mg in unsprung position, and means for detachably securing said valve across the nozzle opening, said means comprising a spider on which said valve is mounted, a peripheral portion of said spider being removably secured between said 105 spacing means and the outer end of the tube neck.

2. In a self-sealing paste tube closure, a cap having a threaded securing portion, a spring plate closing one end of said cap, an internal- 1w ly projecting horizontal flange between said rial extending diametrically across the ring to the center of which said valve is rigidly attached, said ring being removably secured beneath said internally projecting horizontal flange when the cap is attached to a container neck.

CONRAD Km;

Images