Patent ID: 7950595

Claim:
A liquid droplet spray device comprising: (a) a nozzle body; (b) a piezo-electric actuator; (c) a fluid chamber located below the nozzle body; (d) a liquid receiving section; and (e) a wicking apparatus comprising i. a volatile substance reservoir; ii. a wick holder; and iii. a wick, wherein the reservoir has a reservoir body for containing a volatile substance, and a reservoir neck extending from the reservoir body and terminating in a reservoir opening, wherein the wick holder and the wick are inserted into the reservoir opening; wherein the wick holder has a top part for fitting on the reservoir neck and a bottom part for insertion into the reservoir opening, wherein the top part of the wick holder is in the form of a plate provided with a central opening for receiving the wick, and the plate is provided with two peripheral projections that are spaced apart and that extend downward from the plate towards the reservoir body when fitted on the reservoir along substantially an entire periphery of the top part, wherein the two peripheral projections include a first projection for contacting an inner wall of the reservoir neck, and a second projection for contacting an outer wall of the reservoir neck, so that the top part sits on the reservoir supported by the reservoir neck and is held in place by the first projection and the second projection, wherein the bottom part of the wick holder is integrally formed with the first projection and has a plurality of wick supporting arms spaced apart along a periphery of the bottom part, and the plurality of supporting arms extend further downwards away from the top part and the supporting arms have flexible end portions projecting inwardly towards a center of the reservoir opening; wherein the wick is step-shaped and has a larger diameter part for supplying, by capillary contact, liquid to the liquid receiving section of the liquid droplet spray device when mounted thereto, and a smaller diameter part, as compared to the larger diameter part, for extending into the reservoir to contact an inner bottom surface of the reservoir when inserted in the reservoir, wherein an interface disposed between the larger diameter part and the smaller diameter part defines a shoulder that is supported and held in place by the flexible end portions of the plurality of supporting arms, wherein the liquid receiving section is arranged to receive liquid through capillary contact from the wick, and to provide the fluid chamber with the liquid for ejecting liquid received by the fluid chamber as a spray of droplets exiting through the nozzle body when the liquid is actuated by the piezo-electric actuator.