Fluent material handling – with receiver or receiver coacting mea – Filling or refilling of dispensers – By operation of means causing or controlling dispensing
Patent
1999-11-01
2000-09-05
Recla, Henry J.
Fluent material handling, with receiver or receiver coacting mea
Filling or refilling of dispensers
By operation of means causing or controlling dispensing
141 22, 141 25, 141 27, 141 94, 141380, 141381, 222 47, 222 49, 222205, 222309, 215217, 215219, 215221, B65B 104, B65B 304, B65B 3100, B67C 300
Patent
active
061127795
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE INVENTION
The invention relates to an improved stopper for the screw-closure of bottles containing liquids, having a syringe device for drawing up metered amounts of said product. These stoppers comprise a capsule with an internal thread which is screwed onto the threaded neck of the bottle, and a syringe device with a cylinder, a plunger and--so as to move the plunger--a graduated plunger rod which measures the suction stroke of the plunger and therefore the amount of liquid sucked up.
The way in which the stopper in question is made means that it can be used in automatic bottle filling and sealing plant, it prevents pressure differences from forming between the outside and the inside of the bottle, it offers peace of mind in that it cannot be opened by a child and it offers a tamper-proof seal. These and other objects and advantages will become clear in the following text.
According to the invention: the cylinder of the syringe device is formed coaxially and as one piece with the capsule; an element inside the capsule and surrounding said cylinder forms a) an annular leaktight seal which can be tightened onto the edge of the bottle neck by screwing down the capsule, b) an extension piece having an annular cross section and external shaping so that it can fit securely inside the bottle neck and c) a central hole for accommodating the cylinder of the syringe device; said hole is surrounded by an annular lip which extends toward the center of the bottle and is designed to wipe the outer surface of the cylinder as the capsule with the syringe device is pulled out. A ring with cuts made in its circumference is attached in order to form a tamper-proof seal against unauthorized opening.
In order to avoid any pressure differences between the outside and the inside of the bottle, said internal element can have at least one hole between said extension piece and said lip, so that the pressure inside and outside the bottle can balance out.
A safety cap with a deformable side wall is fitted and engaged on said capsule so that it can rotate freely; the inner surface of said safety cap and the outer surface of said capsule will in this case be shaped such that flexible fins provide a spontaneous rotational coupling in the screwing direction and teeth--which, in the cap, are located in deformable zones of the side wall--provide coupling in the unscrewing direction, but only when there is deformation of the side wall.
A better understanding of the invention will be gained by following the description and the accompanying drawing which shows a practical and non-limiting example of said invention. In the drawing:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a view in axial section of a bottle, with part removed, and of the stopper in the closed position;
FIGS. 2 and 3 show, in isolation, an internal element forming the leaktight seal, in cross section and viewed on the line III--III in FIG. 2, respectively;
FIGS. 4 and 5 show two cross sections on IV--IV and V--V of FIG. 1, in the shaped zones for screwing and unscrewing the capsule; and
FIGS. 6 and 7 show a detail of the plunger rod, in longitudinal section and in cross section on VII--VII in FIG. 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
According to the illustrations of the accompanying drawing, the reference numeral 1 denotes a bottle, the neck 3 of which has an external thread 5 and a shallow internal hollow 7 caused by shrinkage during the molding of the glass or plastic from which the bottle is made, or by some other suitable and known method. The reference 3A denotes an annular projection located near the bottom end of the neck 3 and the reference 3B denotes the top edge of the neck 3 which surrounds the bottle opening and ensures that the stopper provides hermetic sealing.
11 is the general reference for the main body of the stopper which is in the form of a capsule with a top 11A and a side wall 11B, formed on the inside of which is an internal thread 13 designed to engage with the thread 5 in order to screw the stopper closed. F
REFERENCES:
patent: 3881624 (1975-05-01), Dougherty, Sr.
patent: 5671853 (1997-09-01), Herr
patent: 5746349 (1998-05-01), Putteman et al.
patent: 5836359 (1998-11-01), Seidler
Maust Timothy L.
Project s.a.s.di Massimo Menichelli & C.
Recla Henry J.
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