Patent ID: 7467752
Filing Date: 2008-12-23
Classification: B05B

Abstract:
1. An electrically-operated fluid sprayer comprising: a dual chamber piezoelectric liquid and air pump including a first inlet port and a first outlet port in communication with a first pump chamber for pumping liquid, a second inlet port and a second outlet port in communication with a second pump chamber for pumping air, and at least one piezoelectric diaphragm disposed between and adjacent to said first and second pump chambers; drive circuitry electrically coupled to said at least one piezoelectric diaphragm for supplying electrical signals thereto that deform said at least one piezoelectric diaphragm to vary the volume of said first and second pump chambers; a battery compartment having battery contacts, at least one of which is selectively coupled to said drive circuitry; and an electrical switch coupled to at least one of said battery contacts and said drive circuitry, wherein said pump, battery compartment, electrical switch, and drive circuitry are supported in a housing.