초록 ▼

An electrostatic spraying device is disclosed having a container (16) for the liquid to be sprayed and a capillary structure (22) extending into the container. To maintain a substantially constant liquid level at the location where liquid is drawn into the capillary structure, the container is parti

An electrostatic spraying device is disclosed having a container (16) for the liquid to be sprayed and a capillary structure (22) extending into the container. To maintain a substantially constant liquid level at the location where liquid is drawn into the capillary structure, the container is partitioned into two chambers, one (68) of which is isolated from atmosphere and the other (66) of which is in communication with atmosphere. The capillary structure (22) extends through one chamber and the arrangement is such that the liquid level at the location where the capillary structure communicates with the liquid is maintained substantially constant over a wide range of variation of the liquid level within the other chamber. The upper end of the capillary structure may be provided with an oblique end face (50; 70, 72) to facilitate dispersal of the spray into the surroundings.

대표청구항 ▼

[ We claim:] [1.] A cartridge for use in electrostatic spraying comprising a container for liquid to be electrostatically sprayed, a capillary feed structure having one end thereof located within the container and an opposite end thereof forming or associated with a spraying tip of the device in use

[ We claim:] [1.] A cartridge for use in electrostatic spraying comprising a container for liquid to be electrostatically sprayed, a capillary feed structure having one end thereof located within the container and an opposite end thereof forming or associated with a spraying tip of the device in use, and means within the container for controlling liquid level within the container, in which the base of the cartridge is of inwardly concave configuration with the lowest point located beneath the capillary structure.