Abstract: A cooling fan for dissipating heat requiring relatively little electrical power to operate. The fan includes a fan blade, constructed from flexible metal or plastic, anchored at one end and having a permanent magnet mounted at the other end. An external drive mechanism, such as a position sensor or an oscillator, provides a drive pulse to the coil. The fan blade is placed in motion by energizing a coil which is disposed about a core constructed of magnetically permeable material and positioned adjacent the magnet. Upon energization of the coil, the magnet mounted on the blade reacts to the magnetic field generated by the coil, causing the blade to move away from the coil. When the magnet, due to the flexibility of the fan blade, moves back towards the coil, a voltage is induced in the coil by the magnet, thus causing current to flow through the coil to apply a kick or power pulse of magnetic energy to the magnet. This process continues as the blade moves from side to side.

Abstract: A high velocity, weather resistant cooling fan for moving large volumes of air long distances can be disposed in either oscillating or non oscillating modes, either inside or outside. A rigid, generally tubular housing has a suitable guard defined on each end. A propeller mounted within the housing, coaxially disposed adjacent an intake venturi, is directly driven by an electric motor. The fan venturi inlet is formed by a flare defined in its housing at the intake end. A transition zone is defined within the tubular housing where the diameter of the flared end gradually reduces and smoothly merges with the uniform diameter of the housing. The propeller is mounted within the transition zone to stabilize air before discharge. A generally U-shaped yoke, rolled from welded, nested channels, pivotally mounts the fan. A stabilizer tube is preferred for sturdily mounting the yoke to a suitable post.

Abstract: A rotatable device for a protective net of an electric fan including a vertical base, a synchronous motor fixed on a rear surface of the base, a gear fixed on the shaft of the motor, a first sleeve supported on the shaft of the motor of an electric fan and fitting through a center hole of the base to fit around a rear small diameter shaft hole of a rotatable sleeve and then to engage a rotatable sleeve locking nut fitted in a front large diameter shaft hole of the rotatable sleeve, a net locking nut engaging a male threaded portion of the rotatable sleeve to secure the net ring of the protective net of an electric fan with the rotatable sleeve having a gear portion to engage the gear so that the protective net may be rotated by the rotatable sleeve.

Abstract: A screw pump for feeding highly viscous material such as mixed concrete and the like. Plural projections engage the helical screw of the screw pumps to facilitating removal of the material such as gravel caught in the screw pump. Further for preventing excessive force from being exerted on the screw because of material caught in the screw pump, a spring is interposed between partitioning plates and hydraulic cylinders or crank mechanisms. Further, to make the position of the holder for the partitioning plate stable, plural rollers are provided above the holders.

Abstract: A blower apparatus (18) for use in a gasifier and burner combination, the blower including a housing (60) which includes an inlet for gas from the gasifier and an exit nozzle (64) leading to the burner. A vertical blower shaft (66) extends up into the housing (60) as well as down below the housing (60), wherein the blower shaft (66) includes a hollow portion which is in communication with the environment. A first fan (62) is positioned on the upper end of the blower shaft (66) within the housing (60) and a second fan (80) is positioned on the blower shaft (66) beneath the housing (60). A motor (70) drives the blower shaft (66) through a belt and pulley arrangement (72,68).

Abstract: A fan heating includes a stationary housing and a louvre blade assembly having at least one oscillating louvre blade located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater further includes a drive system for the louvre blade assembly with the drive system itself including lightweight plastic drive gears located rearrwardly in the housing and a lightweight plastic connecting shaft extending forwardly from the drive gears to the louvre blade assembly. Positioned between the louvre blade assembly and the drive gears are an electric heating element for providing the hot air and a fan blade for circulating the hot air which is operated from a motor also operating the drive gears through a rubber drive belt. The drive gears and belt are located in said housing laterally outwardly away from the heating element.

Abstract: An electric fan heater includes a stationary housing and a louver blade assembly having a plurality of oscillating louver blades located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater also includes a drive system for the louver blade assembly with the drive system comprising lightweight plastic drive gears and a small rubber drive belt located rearwardly in the housing as well as a lightweight plastic connecting shaft extending forwardly from the drive gears to the louver blade assembly. The electric heating element for providing hot air from the heater is positioned between the louver blade assembly and the plastic drive gears. The gears and connecting shaft are located in the housing laterally outwardly from the heating element to avoid direct exposure to the heat therefrom.

Abstract: A rotating wind-guiding shell for an electrical fan effectively changes the direction and magnitude of the blowing wind from the fan. The pressure and the direction of the wind from the fan can be varied instantaneously and the effective wind field can also be enlarged. At any place within the effective wind field, one can produce a variation of the pressure and the direction of the wind from the fan while it is continuously operating. The structure of the device is simple so that its cost is very low and it can be used as a desk-fan, floor-fan, ceiling-fan or a wall-fan by a simple adjustment at its support.

Abstract: A fan assembly has a main body support and a mounting member which are inclined at a predetermined angle thus permitting the fan assembly to be mounted either adjacent to the upper edge of a wall or in a corner of a ceiling. A rotating grill disperses a current of air over a relatively wide area. The main body support has a groove which accommodates a mating engageable member of the mounting member thus permitting the fan assembly to be securely mounted to a wall or a ceiling.

Abstract: A valve respirator device for use both on human and on animal patients. The device comprises a housing having an inport, an outport and an exhaust port. The outport is connected to the patient's respiratory system, the inport is connected to a source of air and the exhaust port is open to the surrounding atmosphere. To that end, in alternating succession, first the inport and then the exhaust port is in fluid communication with the outport. A slotted, rotatable valve cylinder is utilized as a means for providing alternating fluid communication first between the inport and the outport and then between the outport and the exhaust port. The device further comprises a metering plate which is interposed in the path of fluid communication between the outport and the other two respective ports. In that regard, the metering plate includes several apertures which regulate the volume and other flow characteristics of air passing between these respective ports.

Abstract: The present invention provides a fan structure having a housing and vane arrangement adapted to oscillate relative to the housing. The fan motor is used to operate both the fan blade and the vane arrangement. The structure includes a drive system having a rotating drive shaft for driving an oscillator which is adapted to oscillate the vanes and a control mechanism for controlling on/off switching of the drive system to the oscillator. Accordingly, the fan blade is operated independently of the oscillator so that the structure can be run both with and without oscillation of the vanes.

Abstract: The present application discloses an electric fan apparatus comprising a fan, a wind direction shifting plate disposed in front of said fan and adapted to be rotated by the pressure of a wind generated by said fan, a rotary shaft disposed at the center of said wind direction shifting plate and adapted to be rotated integrally with said wind direction shifting plate, a speed governor mechanism interlocked with said rotary shaft and a housing box for housing said speed governor mechanism.With said wind direction shifting plate rotated, a wind may be provided in a wide range. Provision is made to improve the durability of said speed governor mechanism, which is formed with a gear mechanism and a blade. Said housing box contains a liquid into which at least a portion of said gear mechanism is immersed, so that said wind direction shifting plate is rotated at a substantially constant low speed.

Abstract: A water wheel comprising a rotor, having a plurality of buckets longitudinally and tangentially extending about its periphery, and a shaft, which centrally engages the rotor and is rotated by movement of the rotor. The buckets are unitary in construction and are level compensating, remaining essentially perpendicular to the direction of the falling water stream during those periods of time when the buckets are filled with water. The water wheel is mounted on a plurality of standards, having rollers, which are movable on tracks toward or away from the falling water stream. A compensating flywheel is provided to maintain uniform movement during water head variations.

Abstract: The ventilating fan is comprised of a centrifugal governor which is driven by the fan impeller for causing a plurality of simultaneously operable pivotable louvers, which are supported by the fan casing, to move to their open position during fan operation. When the fan impeller is stopped, a spring which is interposed between the louvers and the casing caused the louvers to return to their closed position.

Abstract: This invention teaches an air distributor accessory device for a breeze box type fan having an annular case and having fan blades supported to rotate within the confines of this case. The accessory device is designed to fit against and be secured to the front face of the fan case, and itself has an annular frame that pivotally supports a plurality of vanes in generally parallel relation. Each vane has a slender profile, and depending on its orientation relative to the direction of the air flow over it can either allow the air to pass straight through or redirect it in a sideways manner. Cross members pivotally interconnected all of the vanes to maintain them generally parallel to one another, and to move them uniformly. A small motor unit is connected to one of the cross members to oscillate the vanes side to side in unison.

Abstract: A room air conditioning unit has an air flow guide mechanism which provides an oscillating-type of air sweep louvered grill for the unit discharge duct. A motor with suitable gear reduction supplies power to a double acting barrel cam having a curved surface matching the radius of the center of rotation of the grill assembly to a point of contact of a follower fixed to the air conditioner unit front cabinet housing. The cam has a groove receiving the follower to transmit the desired amount of movement to rock the guide mechanism about a horizontal axis to provide a vertical air sweep. An eccentric pin on the cam drives a vertical louvered actuating rack to generate horizontal air sweep. The cam follower may be disengaged from the cam groove when vertical air sweep action is not desired.

Abstract: An air register for mounting in a duct outlet of a forced air heating or ventilation system includes a frame carrying a plurality of pivotally movable horizontal and vertical louvers disposed in the stream of air from the duct. A generally cylindrical reel-type windmill is mounted on the frame for rotation by the stream of air about an axis disposed substantially perpendicular to the direction of the stream of air, and is coupled by a speed reducing gear train and a crank mechanism to a connecting rod interconnecting the vertical louvers for effecting continuous oscillatory movement thereof in response to rotation of the windmill by the stream of air for continuously varying the direction of the stream of air from the register. The entire apparatus is dimensioned and arranged to fit within the 23/4-inch depth of a standard room wall air duct outlet.

Abstract: Insulated closures for attic fans, and the like, one modification of the apparatus having an insulated panel which is removably disposed to cover the attic fan opening, and another modification having insulated tiltable dampers. Complete edge seals for each modification are provided.

Abstract: A roof ventilator comprising a pipe provided with an opening therein, a shutter means adapted to be raised above or lowered over said opening, a supporting arm associated with a rotating shaft which is rotatably disposed within said pipe, a fan means housed in said pipe below said shutter means and attached to said shaft, means for rotating said shaft and the fan associated therewith, said shutter means being supported on said supporting arm by two pairs of foldable arms, each pair of arms being pivotally connected to each other and to the terminating top end portion of said supporting arm at one end and to the shutter means at the other end so that a unitary upward movement of said pairs of foldable arms and said shutter means is achieved by the rotation of the fan means disposed therebelow.