Apparatus for ultrasonic nebulization
Patent 4109863 Issued on August 29, 1978. Estimated Expiration Date: 
August 17, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 17, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3291122 3392916 3433461 3729138 3812854 InventorsAssigneeApplicationNo. 05/825519 filed on 08/17/1977US Classes:239/102.2, By electric transducer (e.g., piezoelectric crystal)128/200.16, Ultrasonic239/128WITH HEATING OR COOLING MEANS FOR THE SYSTEM OR SYSTEM FLUIDExaminersPrimary: Cherry, Johnny D.Attorney, Agent or FirmInternational ClassesG10K 11/00 (20060101)A61M 15/00 (20060101) B05B 17/06 (20060101) B05B 17/04 (20060101) AbstractAn improved apparatus for ultrasonic nebulization of liquid samples or suspensions in which the piezoelectric transducer is protected from chemical attack and erosion. The transducer is protected by being bonded to the inner surface of a glass plate which forms one end wall of a first hollow body provided with apparatus for circulating a fluid for cooling and stabilizing the transducer. The glass plate, which is one-half wavelength in thickness to provide an acoustically coupled outer nebulizing surface, seals an opening in a second hollow body which encloses an aerosol mixing chamber. The second body includes apparatus for delivering the sample solution to the nebulizing surface, a gas inlet for providing a flow of carrier gas for transporting the aerosol of the nebulized sample and an aerosol outlet.Field of SearchVibratory or magneto-strictive projecting | |
