Abstract: A nebulizer has an aerosol generator, a reservoir, and an aerosol outlet. A piezoelectric vibration generator is on a downstream side of a support washer, and power to the piezo is provided by a spring contact assembly. The assembly has upstanding electrical terminals for contact with electrical supply conductors. There are spring terminals extending around a rim of the spring contact assembly to engage an exposed underside of the washer, and a resilient ridge extending in the upstream direction to engage the underside of the piezo, which itself is on the downstream side of the washer.

Abstract: An acrosol generator core (1) has an integral body (2) and membrane (4), and a vibratory drive connected to an electrical voltage supply. In some examples the body provides the vibration drive and comprises a piezoelectric polymer (2) of P(VDF-TrFE) material. In this manner a single manufacturing operation can provide the membrane. the support. and the vibration drive. and operations such as attaching a membrane to an annular support are avoided.

Abstract: A nebulizer has an aerosol generator, a reservoir, and an aerosol outlet. A piezoelectric vibration generator is on a downstream side of a support washer, and power to the piezo is provided by a spring contact assembly. The assembly has upstanding electrical terminals for contact with electrical supply conductors. There are spring terminals extending around a rim of the spring contact assembly to engage an exposed underside of the washer, and a resilient ridge extending in the upstream direction to engage the underside of the piezo, which itself is on the downstream side of the washer.