Intra-microspray ICP torch
March 6, 2009. 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 727415 3923288 Combustion apparatus Humidifier unit Mechanical device to produce a finely dispersed aerosol Mist generating structure and molding apparatus therefor Inductively coupled plasma discharge in flowing non-argon gas at atmospheric pressure for spectrochemical analysis Spectrometry plasma burner Concentric micro-nebulizer for direct sample insertion Pre-aligned demountable plasma torch InventorApplicationNo. 320002 filed on 03/06/1989US Classes:219/121.52, Electrode structure219/121.48, Plasma torch structure219/121.49, Cooling system219/121.51, Gas supply system239/343, And diffuser or baffle means (e.g., sudser or foamer)239/432, Including additional dispersing plate or obstruction in mixing chamber315/111.51Induction typeExaminersPrimary: Paschall, Mark H.Attorney, Agent or FirmForeign Patent References
International ClassB23K 009/00AbstractAn intra-microspray ICP torch for use in conjunction with spectographic analysis generates a high temperature ionized gas in a plasma region at one end of the torch, and includes a preshaped tube mounted within the torch, with a first end of the tube terminating adjacent the plasma region, and a nebulizer mounted to a second end of the tube. The preshaped tube has at least one set of impactors that define at least two chambers, the impactors blocking the line of sight between adjacent chambers. The nebulizer propels a pressurized aerosol/sample mixture at the impactors, toward the plasma region. The impactors divert the mixture as it travels from chamber to chamber toward the plasma region, causing a filtering effect that promotes passage to the plasma region of sample particles having a size of about 15 microns or less, thereby resulting in optimum spectrographic clarity.Other References
Field of SearchNozzle systemElectrode structure Plasma torch structure Gas supply system Cooling system Material atomized in holder (e.g., nebulizer) And diffuser or baffle means (e.g., sudser or foamer) And baffle, diffuser or flow separating means (i.e., nebulizer) Including additional dispersing plate or obstruction in mixing chamber Noncarburetor Induction type Plasma generating | |
