Abstract: A ceiling fan is disclosed as including a motor and a plurality of fan blades, each of which is a contoured metal blade. Each fan blade has an enlarged leading edge and an end edge, which have been rolled over to establish a thickness of three-sixteenths of an inch at the forward, or "impact" side. Such thickness meets the recognized industry safety standard for fans used in low height applications, wherein the fan is secured to a ceiling spaced eight feet above the floor, and the fan blades are suspended from a depending shaft at an elevation of seven feet above the floor. Such unique arrangement allows high velocity, contoured metal fan blades to be used in applications formerly reserved for wooden paddle fans with blade thicknesses of at least three-sixteenths of an inch.

Abstract: A ceiling fan is disclosed as including a reversible motor and a plurality of fan blades, each of which is contoured on both its upper and lower surfaces whereby the air flow is directed in accordance to the direction of rotation of the motor, and wherein the fan is located adjacent to its supporting ceiling.

Abstract: An overhead suspended fan has a canopy with a top seal on a support shaft and a bottom seal which is mounted on a rim of a cup-shaped member supported above the motor housing bearing and which has an annular portion engaging the inside of the bottom portion of the canopy and an open shoulder upon which the bottom end of the canopy rests; an inner lip on the annular portion of the bottom seal defines a groove interlocking with the rim of the annular member. An outward and downward flaring skirt on the second seal forms a narrow restricted clearance with a frustoconical portion of the motor housing; a second cup-shaped member mounted on the top portion of the housing has a rim extending upward within a depending annulus of the second seal to prevent water flow to the housing bearing.

Abstract: A modular installation of a plurality of air curtains is disclosed as including a cabinet for each air curtain housing a blower and motor and having opposed end panels with fastening means securing adjacent cabinets to each other whereby cabinets of the same or different lengthwise dimensions may be installed as a unitary device.

Abstract: A waterproof fan is disclosed as including an inverted bell-shaped canopy adapted to be suspended from overhead and having a support rod extending to a second canopy, the top and bottom edges of which are provided with a rubber hood and cowling, respectively; the second canopy covers the top of a motor housing and a fixed shaft connected to the canopy extends into the motor housing on which a plurality of fan blades are attached for rotation therewith.