Honeywell International Inc.

William A MacPherson, Iii

Lanny J Frawley

James M Murphy

Zoltan Borbath

Andrew A Kuester

Gregory A Wischstadt

Maura D Adamczyk

A duct detector includes sampling tubes which slidably engage the detector with a fixed orientation to facilitate fluid flow. The tubes have a connector portion and a conduit portion. The connector portion and the conduit portion engage one another with a predetermined orientation.

Coupler for attachment of sampling tubes to duct detector

Housing for a duct smoke detector

A modular smoke detector has a sensing electrode carried by an insulator module. The insulator module also carries an ionization source and a field effect transistor. The insulator module lockingly engages a printed circuit board. A conical smoke deflector and exterior electrode are assembled to the insulator module. The deflector and exterior electrode are spaced apart providing a space for inflow and outflow of airborne particles of combustion.

Ionization type smoke sensing chamber

Growing community of inventors

Wasco, IL, United States of America

William A MacPherson, Iii