DR. ROBERT C. NELSON, O.D.
Optometry at Tyler Rd, Wichita, KS

5281246, Jan 25, 1994

Dec 23, 1992

7/996014

Shaun Ray - Wichita KS
Robert G. Nelson - Wichita KS

Metal-Fab, Inc. - Wichita KS

B01D 4600, B01D 4640

55302

An air cleaner assembly for capturing and filtering fumes is provided which comprises a housing having an inlet and an outlet, a pair of filter cartridges supported therein and a blower. A channel and baffle assembly direct the flow of air drawn into the housing in a vortical pattern around the filter cartridges to separate heavier particles in the air and to efficiently draw the air through the filter cartridges. The separated particles collect in a pair of dust trays that are provided with flow directional lips to prevent the vortical air flow from disturbing the deposited particles. A backflushing assembly cleans the filter cartridges of the particles that are collected thereon by pulsing the particles away with a blast of air directed through the entire length of the filter cartridges.

6810599, Nov 2, 2004

Jul 1, 2002

10/188201

Kevin L. Obrachta - Wichita KS
Robert Nelson - Wichita KS
Richard J. Meusborn - Wichita KS

The Boeing Company - Chicago IL

G01B 356

33532, 33531, 33833, 335551

A method and a gauge for measuring the sharpness of the tip of an object is provided. The method includes receiving the tip of the measured object in the end of a tube. The object deflects a plunger inside the tube a finite distance proportional to the sharpness of the object inserted in the tube. A measurement of sharpness of the tip of the object is derived by measuring the deflection distance of the plunger. The measuring method may be used to measure the sharpness of a number of objects in sequence by displaying the sharpness of the object, such as where the objects being measured are pins arranged in a matrix pattern.