Patent ID: 8668660

Claim:
An interproximal area cleaning appliance, comprising: a housing; a spray-generating assembly positioned within the housing, the assembly including a hollow body member defining a chamber, having a movable piston-spring assembly positioned therein, comprising a piston and a spring, wherein the spring extends between an upper surface of the piston and an upper end of the body member, a gas inlet into the chamber with a one-way valve permitting gas to enter the body member, a separate inlet for fluid into the chamber and an outlet from the chamber for a spray of fluid droplets; and a system for moving the piston within the hollow body member from a rest position in which the gas inlet is blocked, to compress the spring, resulting in the piston being in another position in which the gas inlet is unblocked, wherein subsequent release of the piston, following entry of gas and fluid into the chamber, creates sufficient pressure within the chamber to produce a fluid droplet spray from the outlet which is directed to an applicator/nozzle assembly which extends from the housing for directing the fluid droplet spray to the interproximal area.