Variable-flow feeder

Bottles and jars – Nursing bottles and nipples

Patent

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Details

A61J 1100

Patent

active

051179946

DESCRIPTION:

BRIEF SUMMARY
The present invention concerns a variable-flow feeder to be fitted on a bottle, in particular a milk bottle, and comprising at its end an orifice to pass the food to the infant, said orifice consisting of a slit with two arms subtending an angle between them.
The known feeders consist of a ring affixed to the milk bottle, of a body, and of the nipple proper subject to the infant's suction. It has already been suggested to provide one or more slits at the top of the nipple. It is known from French Patent No. 2,052,206 to insert a slit, whether rectilinear or otherwise, which comprises at least at one of its ends a perforation in the feeder wall. Again it is known from the U.S. Pat. No. 2,805,663 that the slit may be V-shaped, the angle subtended by the arms of the V being about 60.degree..
The feeder nipple may be convex, essentially spherical, at its end, in manner known per se; in that case the slit will be present in this convex end. French Patent No. 2,417,978 suggests introducing this feeding slit in a curved, concave surface, also in an essentially plane surface at the end of the nipple. When the surface is concave, the slit will be at the bottom of the cavity.
Moreover, it is common practice to position reference marks on the feeder body that assume specific positions relative to the slit(s) so as to control the slit position relative to the median plane of the child's head by rotating the milk bottle about its axis. The purpose of this control is to ensure flow regulation from the feeder through a more or less opened slit during the lip sucking motions of the infant. Conventionally there are three reference marks so positioned that mark I corresponds to minimum flow from the milk bottle, mark III will be the maximum flow, and mark II an intermediate flow; as regards a feeder with a straight slit, the reference marks I and III are positioned at a 90.degree. distance on the feeder periphery and the reference mark II is located on the feeder in the dihedral bisecting plane defined by the nipple axis and the marks I and III on the side farthest away from these marks I and III.
As regards the milk bottles used so far, the change of its flow between its different positions has been unsatisfactory. Illustratively as regards the milk bottle with the V-shaped slit described in U.S. Pat. No. 2,805,663, the milk-bottle flow is practically the same regardless of bottle position; the user, therefore, must change the feeder if desiring to change the flow. With respect to the slit described in French Patent No. A 2,052,206, there are different flows for the positions I and III, however the flow for the position II does not significantly differ from that for position I; in these circumstances, the user passes directly from position I to position III and does not use position II (see FIG. 4).
Accordingly, a feeder is desired which offers as linear as possible a progression relative to each of the positions I, II and III, so that with one feeder, the flow may be changed if called for during the feeding; moreover, it is desired that the difference between the maximum and minimum flows be sufficient to make use of the same feeder for different foods and for different infants.
The present invention concerns a variable-flow feeder allowing to solve this problem.
The object of the present invention is a variable-flow feeder to be fitted in particular on a milk bottle and comprising at the end of its nipple a slit with two arms subtending between them an angle, said feeder being characterized in that the angle between the two slit arms is an obtuse angle F between 165.degree. and 95.degree. of which the vertex lies on the feeder axis, in that the slot arms are 1.sub.1 and 1.sub.2 long (1.sub.1 >1.sub.2) such that the ratio 1.sub.1 /1.sub.2 shall be between 1 and .delta., the value of .delta. increasing from 1 to 10, preferably from 1 to 4.5 when the value of .GAMMA. decreases from 165.degree. to 95.degree., said slit arms consisting of cutting lines which do not remove material and issuing at their non-adjacent ends int

REFERENCES:
patent: 2063424 (1936-12-01), Ferguson
patent: 2805663 (1957-09-01), Robinson et al.
patent: 3139064 (1964-06-01), Harle
patent: 3200860 (1965-08-01), Barton et al.
patent: 3650271 (1972-03-01), Pelli

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