GB1298067A - Improvements in and relating to atomizers - Google Patents

Abstract

1298067 Atomizers A S BROWN & CO (MFG) Ltd and E P CROME 17 Feb 1970 [25 Feb 1969] 10113/69 Heading B2F Liquids are sprayed by a device comprising a cylinder 12 in which there is a piston 13, the cylinder having an extension 12' for attachment thereto of a liquid container, a transverse partition 17 separating the part in which the piston moves from the extension, a diaphragm 35 overlying the partition on the cylinder side, which diaphragm is flattened against the partition on the compression stroke of the piston and its centre moves away on the suction stroke, forming a chamber between the diaphragm and the partition (Fig. 3C) into which liquid is drawn through a connection with the liquid container. This liquid is sprayed out on a further compression stroke of the piston via an outlet in the chamber to an orifice 31 in the cylinder. In the embodiment shown the chamber is further defined by a conical member 34, the diaphragm touching the underside of this when the chamber is at its maximum size, the conical member being held against the diaphragm, which is cut away at one side to allow entry for compressed air (Fig. 2), and the partition by a spring 14, which spring is compressed on the compression stroke of the finger actuated piston 13. The container 11 for the liquid is screwed into a skirt extending down from the partition, the container holding in place a tubular member 23 extending into the container. A stem 21 extends from the piston 13 through holes in the conical member, diaphragm and partition into a wide bore section 26 of the member 23, there being a gap between the stem and the partition for passage therethrough of liquid to the chamber formed by the diaphragm, and seals 32, 33 resting on vanes 29 on the stem 21 to seal. this gap when the piston is not depressed. There may be grooves in part 26 of the member 23 so that the piston may only be depressed when vanes 29 are in alignment with the grooves, thus the piston may be locked in its non-depressed condition. The passage of the liquid out of the chamber formed by the diaphragm and partition is by radial grooves 20 and a annular groove 19 (Fig. 2) which communicates with the orifice 31. The atomiser may be used for cosmetics, medical or industrial purposes.