Roman A Stobnicki

US Patent:

54686458, Nov 21, 1995

Filed:

Jul 26, 1993

Appl. No.:

8/097112

Inventors:

Kirollos S. Kirollos - Virginia Beach VA
Gueorgui M. Mihaylov - Virigina Beach VA
Kevin L. Lockerby - Chesapeake VA
Roman A. Stobnicki - Franklin NJ

International Classification:

G01N 2178
G01N 3122

US Classification:

436164

Abstract:

A method for reading and analyzing a diffusion-cell colorimetric exposimeter for making a quantitative determination of the time-weighted average (TWA) exposure to airborne gases or vapors. The diffusion cell is optically scanned to form color video signal data representative of the primary color components of the image formed from the reaction of the chromophoric reagent and pollutant. The data is converted to digital data and processed to compute exposure for a given pollutant gas as a function of color intensity for at least one of the primary color components.

US Patent:

52091147, May 11, 1993

Filed:

Jun 26, 1991

Appl. No.:

7/721126

Inventors:

Hill S. Lalin - Wayne NJ
Roman A. Stobnicki - Franklin NJ

International Classification:

G01F 314

US Classification:

73248

Abstract:

A reciprocating piston flow meter for measuring gas flow through the flow meter comprising a hollow precision bore flowtube in a vertical orientation, with a movable piston containing a valve assembly for movement in concert with the piston between one position at or near the bottom end of the flowtube, and an elevated position at or near the upper end of the flowtube. The valve assembly is mechanically activated at each opposite end of the piston stroke to permit the piston to reciprocate between each opposite end in response to the presence of a gas flow.