IL44722A - Device for supplying food to wearers of breathing masks - Google Patents

Description

for supplying food to wearers of 42572 a wearer of This relates to a feeding device that is to say a device for the introduction of food to a person a bre thing Known devices for the introduction of food in liquid form for persons wearing breathing masks each comprise a tubular guide extending in a manner through the mask body wall and serving to receive an outlet conduit of a food container The guide is closed in a manner at its outer end by a detachable closure In the interior of the there is arranged a sealing ring which serves to encircle the inserted outlet conduit and seals the latter relative to the outside atmos here before an automatic closure at the inner end of the guide is opened by the outlet The automatic closure can be constructed various The Federal German Patent shows an automatic closure in the form of an elastically yieldable lip valve engaging about the outlet conduit of the food Such a lip valve depends as regards its operation on the inherent elasticity of the closing Aging of the material influences the hen the valve lips become stiff they are no longer able to close the valve in a With the closure cap removed and with the outlet conduit not yet inserted the person wearing the mask would be in danger from entry of contaminated outside The automatic closure according to Federal German Patent 888 comprises a sealing flap automatically opens and closes when the outlet conduit of the food container is and taken This sealing flap is secured by way of a pivot joint on the guide and is provided with a closing Even a slight bending such as may happen for example when cleaning the breathing may prejudice reliability of the seal which is achieved with this According to the present there is provided a feeding device a breathing tubular and a closure which is located at the inner end of said guide and closes the same and which is opened automatically by insertion through said guide of a outlet conduit and closes automatically when said conduit is withdrawn from said said closure comprising a closure member having a rounded closure surface for with the mouth said inner and first and second elongate elastic parts extending said closure member at respective locations spaced about the periphery of said closure member to respective locations provided on said guide and spaced about said said elastic parts urging said closure member to bear on said inner end to close said Owing to the it is possible to obtain in a feeding device for a breathing mask a robust automatic which ensures a satisfactory temporary seal between opening of the guide by removal of a closure cap and the introduction of the outlet conduit so that penetration of toxic substances together with the outside atmosphere can be The automatic closure need not have any mechanical parts which can become so that is nothing to damage when the mask is being elastic parts are parts of an elongate elastic tension Aging of the tension member with loss of elasticity is not significant during the life of the mask body if suitable material is and in any case the tension member be easily When the outlet conduit is the closure member yields laterally very easily without requiring great In this way it is possible to use as the outlet conduit a rigid or cannula which can be connected directly to a tube for the closure member is spherical in The elastic tension member may extend through a bore through the spherical closure the latter being secured against more than limited displacement along the tension member by means of abutments on the tension In another constructional the elastic tension member may be guided in apertures in an equatorial flange of the spherical closure The guiding of the tension member through the bore through the spherical member and the provision of the abutments or the guiding of the tension member by the apertures in the encircling ensures an exact seating of the spherical member even after rough The elastic tension member may have thickened end portions by it is engaged in apertures leading from an annular groove in the This arrangement has considerable advantages when cleaning the breathing The automatic closure can be detached without and and then in position again in just as simple a This cleaning is important when food is taken through the feeding which has to be done under exceptional soiling must be In order to achieve a relatively soft seating for the the mouth at the inner end of the guide can be defined by a buffer In order that the invention may be clearly understood and readily carried into reference will now be by way of to the accompanying in which Figure 1A shows an axial sectional view of a feeding device of a breathing Figure shows an end view of the and Figure 2 shows a view similar to Figure 1A of a modified version of the Referring to the the mask includes a mask body 1 in an aperture in which is mounted a guide consisting of tubular members 2 and The diameter of the interior 3 of the member 2 corresponds to the external diameter of an outlet conduit of a food which is not shown The member 2 is held tightly in the aperture in the mask body 1 by the member A screw closure cap 5 closes the outer end of the interior sealing ring 6 in the member 2 seals against the outlet conduit of the food container before an automatic closure 8 is opened by the The closure 8 shown in Figures 1A and consists of a spherical closure member 7 which is urged by the elastic tension member 8 against the inner mouth 9 of the member The member 8 is suspended by its thickened end portions 10 under preload in apertures 11 leading from an annular groove 12 receiving the portions The tension member 8 extends through a bore through the spherical member Abutments 3A on the member 8 at the two sides of the spherical member 7 substantially prevent the latter from moving along the member A relatively soft seating is obtained for the member 7 at the mouth 9 by providing a buffer ring 15 consisting of an elastic material such as The automatic closure 16 shown in 2 comprises as the closure member a mainly spherical member 16 comprising a hemispherical portion an encircling equatorial flange 18 with recesses and a guide 20 for the tension member Both illustrated constructional forms of the device are used and operatedin the same First of the closure cap unscrewed and Then the outlet conduit It presses the closure member 7 or 16 and in this manner the device is opened and the interior of the mask is connected with the food insufficientOCRQuality

Claims (3)

1. a wearer of 1. A feeding device for/a breathing mask, comprising a-tubular guide, and a closure which is located at the inner end of said guide and closes the same and which is opened automatically by insertion through said guide of a food-supplying outlet conduit and closes automatically when said conduit is withdrawn from said guide, said closure comprising a closure member having a rounded closure surface for cooperating with the mouth of said inner end, and first and second elongate elastic parts extending from said closure ■ member at respective locations spaced about the periphery of said closure member to respective locations provided on said guide and spaced about said mouth, said elastic parSs urging said closure member to bear on said inner end to close said mouth.

2. A feeding device according to claim 1, wherein said elastic parts are parts of an elongate elastic tension member extending across said mouth.

3. A feeding device according to claim 1 or 2, wherein said closure member is substantially Spherical. 4·. A feeding device according to any preceding "claim, wherein said elastic: parts comprise, at said locations provided on said guide, respective thickened end portions engaged in respective apertures in said guide. 5. A feeding device according to any preceding claim, wherein said guide includes an elastic ring which encircles and defines said mouth and on which said closure member bears. 6o A feeding device according to claim 2, or any one of claims 3 to 5 as appended to claim 2, wherein said tension member extends through a bore through said closure member. 7. A feeding device according to claim 6, wherein said tension member includes abutments preventing more than a limited movement of said closure member along said tension member in both directions. 8. A feeding device according to claim 2, or any one of claims 3 to 5 as appended to claim 2, wherein said closure member comprises an encircling flange, and said tension member extends through apertures in said flange. 9· A feeding device for a breathing mask, substantially as hereinbefore described with reference to Figs.1A and IB, or Fig, 2, of the accompanying drawing. 10. In a breathing mask, a feeding device as claimed in any preceding claim.