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Nursing unit with improved plastic liner

阅读:341发布:2021-06-12

专利汇可以提供Nursing unit with improved plastic liner专利检索,专利查询,专利分析的服务。并且An impervious baby bottle is provided with a plastic liner, a nursing nipple and a retaining cap. A venting insert is provided at the bottle mouth, between the lip and the liner, to vent the area between the bottle and liner to atmosphere so the liner collapses as liquid is dispensed therefrom. The bottle is provided with an annular recess into which the venting insert fits to position and hold the insert at the bottle lip. The plastic liner is formed of a flattened plastic tube having reentrant folds at the longitudinal sides.,下面是Nursing unit with improved plastic liner专利的具体信息内容。

1. A nursing unit for liquid infant food including, in combination: an impervious, reusable bottle having an annular neck at the top and terminating in a peripheral lip defining an open mouth, and the bottle having an external annular recess at the lip; a nursing nipple overlying the bottle mouth and lip; a disposable, impervious plastic liner received in the bottle for holding the liquid infant food and having an upper portion extending over the bottle lip under the nursing nipple and turned downwardly outside the bottleneck, the plastic liner being made of a thin tube having a peripheral width approximating that of the internal circumference of the bottle and a length greater than the height of the bottle, the thin tube being flattened and having reentrant folds at each side so that its flattened width is considerably less than half its peripheral width to facilitate entry into the bottle mouth, and the thin tube being closed at the bottom and open at the upper portion; a venting insert having means for continuously venting the area between the bottle and liner to atmosphere so the liner collapses as the liquid is dispensed therefrom, the insert having a first portion overlying the bottle lip and a second portion received in the external annular recess of the bottle; and a removable retaining cap overlying a portion of the nursing nipple for clamping the nursing nipple against the liner to provide a liquidtight seal therebetween.
2. The combination of claim 1 wherein the reentrant folds of the plastic liner extend adjacent the center of the flattened sides so that the total flattened width of the tube is about one-quarter its peripheral width, whereby the flattened tube is easily inserted into the bottle mouth.
3. The combination of claim 1 including a seal at the bottom of the tube to close the same, the seal extending through the reentrant folds to hold the same in position.
4. The combination of claim 1 wherein the plastic liner has a finger-gripping tab at the center of the top of each flattened side.
5. In a nursing unit for liquid infant food including an impervious, reusable bottle having a neck at the top and terminating in a peripheral lip defining an open mouth; a nursing nipple overlying the bottle mouth; and mounting means for mounting the nursing nipple at the bottle mouth; the improvement comprising; a disposable, impervious liner received in the bottle for holding the liquid, the liner being open at the top end and closed at the bottom, the liner being formed from a tube having a peripheral width approximating the internal circumference of the bottle, the tube being initially flat with two flat sides and two pleated sides so arranged that its flattened width is about one-quarter to one-third of its peripheral width, whereby the flattened tube is easily inserted into the bottle mouth; and annular venting means at the bottle mouth between the bottle and liner for communicating the area between the bottle and liner to atmosphere so the liner collapses as the liquid is dispensed therefrom, and the venting means having an internal diameter approximating the flattened width of the tube whereby the tube is easily inserted into the bottle with the venting means in place.
6. The combination of claim 5 wherein the pleated sides of the tube are formed by reentrant folds at each side, the tube is formed of plastic, and the tube has a transverse weld at the bottom extending through the folded tube layers to hold the pleats in position during insertion of the liner into the bottle.
7. In a Nursing unit for liquid infant food including a reusable bottle having a mouth defining a lip, a nursing nipple overlying the bottle mouth, and mounting means for mounting the nursing nipple at the bottle mouth; the improvement comprising: a disposable, impervious liner formed of flexible plastic and adapted to be received in the bottle for holding the liquid infant food; the liner having a seal at the bottom and having an upper portion adapted for extending over the bottle lip and turning downwardly outside the bottle mouth; the plastic liner being made of a thin tube of uniform peripheral width, the tube being flattened and having reentrant folds at opposite sides so that the flattened width is less than about one-third of the peripheral width of the tube and the flattened width being generally not greater than the diameter of the bottle mouth, whereby the flattened tube is easily inserted into the bottle through the bottle mouth.
8. The combination of claim 7 wherein the bottle has a main body with an internal circumference equal to about the peripheral width of the tube, and a reduced neck portion adjacent the bottle mouth having an internal diameter not less than about one-quarter of the internal circumference of the bottle; the liner has a length greater than the height of the bottle; and the liner has a flattened width approximating the diameter of the bottle mouth; whereby the flattened tube is easily inserted through the bottle mouth and, when filled, lies adjacent the interior of the bottle body.
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