Atomizer usable in both normal and inverted orientations

Details Atomizer usable in both normal and inverted orientations Atomizer usable in both normal and inverted orientations

1980-01-11

1983-02-01

Scherbel, David A.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222376, 222464, 239342, 137853, B05E 9043

Patent

active

043710980

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to an atomizer usable in both normal and inverted orientations, capable of reliably preventing flow of air from coming into a pressurizing chamber in both orientations.


BACKGROUND OF THE PRIOR ART

Hitherto, there has been proposed an atomizer having two suction pipes connected to the suction port of a pump mechanism and leading to the neck and bottom portions of a liquid vessel so that the atomizer may be used in both normal (upright) and inverted orientations. In this type of atomizer, the neck portion of the liquid vessel has to have a diameter large enough to allow two suction pipes to pass therethrough. If the diameter of the neck portion is too small, it is not possible to stably support the atomizer at the center of the neck portion, and as a result, the atomizer is held in an unstable manner which hinders a smooth atomizing manipulation.
In this type of atomizer, the switching valve for switching the suction passage between two suction pipes is mounted separately from the suction pipes, undesirably restricting the space in the liquid vessel.
The inventors of the present invention have experimentarily produced an atomizer usable in normal and inverted orientations in which the suction port for operation in the inverted orientation is provided at the upper portion of the cylinder of the pump mechanism. In this case, the liquid is sucked from the suction port for operation in the inverted orientation only after a piston has been fully reset to maximize the pressurizing chamber, so that it is necessary to construct the pump mechanism to have a strength to withstand a large vacuum. In addition, with this arrangement, it has been difficult to suck a sufficiently large amount of liquid into the pressurizing chamber.


BRIEF SUMMARY OF THE INVENTION

It is therefore a major object of the invention to provide an atomizer usable in both normal and inverted orientations having a liquid suction valve and an air-sucking prevention valve for both orientations, the valve being incorporated in the pump mechanism to ensure the suction of sufficiently large amounts of liquid in operations in both orientations.
It is another object of the invention to avoid increasing the size of the atomizer, so as not to restrict the space in the liquid vessel.
It is still another object of the invention to form the suction passage for operation in the inverted orientation by means of an outer sleeve provided around the cylinder of the pump mechanism, thereby to reduce the outside diameter of the upper portion of the cylinder and to make it possible to support the pump mechanism at the center of the neck of the liquid vessel.


BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a partial vertical sectional view of an atomizer usable in both normal and inverted orientations, in accordance with a first embodiment of the invention;
FIG. 1B is a sectional view of an essential part of the atomizer, showing particularly a modification of a stop valve provided in the liquid sucking passage for operation in the inverted mode;
FIG. 2A is a vertical sectional view of an atomizer usable in both normal and inverted orientations, in accordance with a second embodiment of the invention;
FIGS. 2B and 2C are a partial sectional view and a partial perspective view of an essential part of the atomizer of the second embodiment, showing particularly a modification of the stop valve disposed in the suction passage for operation in the inverted mode;
FIG. 2D is a partial perspective view of an essential part of a stop valve showing stil another modification;
FIG. 3 is a vertical sectional view of an atomizer usable in both normal and inverted orientation in accordance with a third embodiment of the invention;
FIG. 4 is a vertical sectional view of an atomizer usable in both normal and inverted orientations in accordance with a fourth embodiment of the invention; and
FIG. 5 is a vertical sectional view of an atomizer usable in both normal and inverted orientations in accordance with a fifth embodiment of the in

REFERENCES:
patent: 403042 (1889-05-01), Frayer
patent: 994938 (1911-06-01), Larimore
patent: 1325134 (1919-12-01), Anthes
patent: 2531980 (1950-11-01), Johnson
patent: 3542254 (1970-11-01), Samuelson et al.
patent: 3893596 (1975-07-01), Beres et al.

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