Christopher W Yamamoto

US Patent:

6432882, Aug 13, 2002

Filed:

Sep 22, 2000

Appl. No.:

09/668827

Inventors:

Christopher W. Yamamoto - Caldwell ID 83605

International Classification:

A01N 4720

US Classification:

504304, 5041161

Abstract:

Several methods and multiple apparatus are disclosed for atomizing or vaporizing chlorpropham or any other organic compound that is a solid at ambient temperature and pressure conditions, without the need for converting the compound to a liquid which must be contained and transported by the aerosol-generating apparatus. The method provides an air stream that can be nearly saturated with chlorpropham vapor and free of both combustion products and carrier solvents. The process includes the steps of forming minute particles of solid CIPC particles from a larger block or chunks of solid CIPC, and inducting the particles into an airstream wherein the particles are provided with sufficient thermal energy to convert them into an aerosol. The process may be implemented by abrading a block of solid CIPC with a wire brush, by shaving a block of solid CIPC with a blade, or by pulverizing chunks of solid CIPC to convert it to a powder. Pulverization may be accomplished, for example, by placing the chunks in a chamber having a spinning blade.

US Patent:

57231842, Mar 3, 1998

Filed:

Aug 9, 1996

Appl. No.:

8/694513

Inventors:

Christopher W. Yamamoto - Caldwell ID

International Classification:

B05D 102

US Classification:

427421

Abstract:

A method and apparatus are disclosed for atomizing or vaporizing chloroprofam or any other organic compound that is a solid at ambient temperature and pressure conditions. The method provides an air stream that can be nearly saturated with chloroprofam vapor and free of both combustion products and carrier solvents. In addition, the temperature of the air stream can be maintained at a temperature that is sufficiently low that it will not adversely affect tubers which are bathed in the air stream. The method includes introducing heated liquified chloroprofam under extreme pressure into a moving air mass within an atomization duct. An apparatus by which the method may be practiced includes a fluid delivery tube which transports liquified chloroprofam under pressure, first to a liquid-heating heat exchanger, and second to a discharge nozzle within a vaporization duct. As the liquid chloroprofam passes through the liquid-heating heat exchanger, it is heated just before it is expelled by the discharge nozzle into the vaporization duct. Pressurization of the chloroprofam within the delivery tube prevents it from boiling as it is heated and while it is en route to the discharge nozzle.