Abstract: Two thermal protectors or thermostatic sitches are mounted on the outside of the housing of a combination ventilator/lamp unit to sense any heat build-up in the housing during operation of its lamp. One switch is normally open and is connected between the lamp and the motor for the ventilator fan; and the other switch, which is normally closed, is connected in series with the fan motor and lamp. The normally open switch is set to close automatically when the temperature in the housing reaches a first value above room temperature, thereby to energize the fan motor to cool down the housing. If the normally open switch and/or the fan motor fails the normally closed switch is set to open at a temperature above that at which the normally open switch closes, and functions as a safety switch to disconnect both the fan motor and lamp from the power supply.

Abstract: The housing has therein two wire inlet/outlet openings overlapped by opposite ends of a removable, generally L-shaped knockout cover, which has in one end an access opening registering with one inlet/outlet opening, and in its opposite end a knockout plug which covers the other inlet/outlet opening, but which can be removed if both inlet/outlet openings are to be used. A wiring chamber is formed in the housing in communication with the inlet/outlet openings by a removable right-angular cover element which cooperates with the housing walls to form a chamber which is triangular in cross section.

Abstract: The assembly includes a grille, a lamp housing (reflector) containing a lamp socket, and a lens. These parts are releasably attachable to each other by a pair of flexible tabs which project upwardly from the lens at opposite sides thereof, and by a pair of rigid tabs which project upwardly from opposite sides of an external flange which surrounds the lower end of the reflector. The lamp housing extends upwardly through a central opening in the grille, and the flange on its lower end engages the underside of an internal flange formed on the grille around its central opening. The rigid tabs on the lamp housing overlie the flange on the grille to secure the housing to the grille, and the flexible tabs on the lens extend through registering notches in the housing and grille flanges, and have hook-shaped upper ends which overlie the grille flange releasably to secure the lens beneath the reflector.

Abstract: A folio of card material for receiving an article, comprising: a sheet folded to form panels, one overlying another; a surface of one of said panels being provided with a pocket for receiving the article, the pocket being expansible from a flattened condition such that, on insertion of the article, the pocket expands in volume to receive the article.

Abstract: A combination heater-light-ventilator unit for mounting in a ceiling, is disclosed. A cylindrical housing supports the unit and an annular grille on its bottom includes an arcuate heat discharge outlet around part of its circumference and an arcuate air intake through the remainder, with a light diffuser supported in the center. The heat discharge outlet is configured to direct heat flow relatively straight down from the unit to minimize its recirculation through the arcuate air intake.