Honeywell G.m.b.h.

John A Forss

Tzuo-Chang Lee

Stephen A Haglund

An electrostatic air cleaner that is supported in the ceiling of a room is modified to vent a portion of the processed air. This venting improves the quality of the air in the occupied space or room. The venting is controlled by a moveable vent closure that has an air diverting portion that can be adjusted along with a sealing portion to regulate the amount of air being diverted from the occupied room.

Exhaust air system for electrostatic air cleaner

A photoelectric smoke detector for providing indications of both alarm and trouble conditions is disclosed having a source of light, a detector apparatus having a light responsive device, said detector apparatus providing an output subject to a first change dependent upon the presence of smoke, the smoke detector further having a housing for mounting the source of light and the light responsive device, the housing having light path means for allowing light from the source of light to fall upon the light responsive device, the output from the detector apparatus being subject to a second change dependent upon trouble conditions, a first level sensor responsive to the first change to provide an alarm indication, and a second level sensor responsive to the second change to provide a trouble indication.

Self-checking photoelectric smoke detector

An electro-optic smoke detector is described which has an improved smoke chamber and detector construction to enhance the detector sensitivity in general and its response to small smoke particles in particular.

Growing community of inventors

Excelsior, MN, United States of America

John A Forss