Abstract: A propeller with pivoting blades is provided as a cleaning tool (1) for the work area of metal cutting machines, where the angle of adjustment for the pivoting blades is such that an air jet is generated supporting the propeller blades (15) in folding open. The propeller blade (15) is arranged in a tool changer stacker instead of a common tool or on a tool spindle and serves to automatically clean the work area by a blowing process.

Abstract: An air cleaner includes a housing having an upper wall and side walls, an air filter mounted with respect to the housing, a fan including a vane-wheel having a plurality of vanes, a supporting plate extending substantially between at least two side walls for supporting the fan. An air flow directional member directs an air flow output from the fan. The vane is formed to have a winglike cross-section, and the vane-wheel includes not more than four vanes. The vane-wheel has a base plate and a shroud. Each of the base plate and the shroud is formed to have a reinforcement portion on its circumference. A U-shaped balance weight is attached to a flattened portion formed on the curled portion. The air cleaner of the present invention can reduce noise and vibration and improve efficiency of the fan.

Abstract: The present invention relates an electric fan. The fan has a body and a fan assembly housed in the body. The fan is able to pivot and elevate/descend with respect to the body. Furthermore, the body has a fragrance container received in a recess defined in the body, such that when the fan is activated, ambience will be full of delightful scent.

Abstract: A necklace hanger for mounting on a portable fan to be worn is disclosed. The hanger includes a main body having a ring for fitly mounting on a fan and an extension for supporting the shroud of the fan. Then a cord is connected to the extension to form a loop for hanging the fan to one's neck. The hanger can selectively combine with the fan by user and is suitable for applying to other portable fans. Furthermore, the connecting mechanism of the cord and the main body is in a detachable manner that when an outer force applied to the connectors exceeds a certain extent, the cord will be released from the hanger to prevent from harms of a wearer.

Abstract: A flexible impeller has an insert design incorporating a threaded end within its insert that cooperates with a threaded removal tool for jacking the impeller from the shaft by rotation of the threaded removal tool.

Abstract: A marine system using a number of different cutting and grinding members positioned at different parts of a marine screw prop shaft adjacent or around the prop for clearing away any line or rope entanglements, particularly for marine props on large commercial vessels. The cutting/grinding edges and surfaces are positioned in differing directions and angles, some with supplemental, opposed members to assist in the rope cutting/abrading, severing process. The rope cutting/abrading structure likewise holds the prop to the vessel should the shaft driving the propeller break, preventing its loss. The preferred embodiment includes a set of outer, aft directed arms and a nested set of inner, substantially forwardly directed arms, each carrying, interactive, side edge cutting or abrading surfaces, with the number of arms coinciding with the number of blades on the associated propeller.

Abstract: A miniature fan for air freshener includes a freely rotatable fan seat, a bearing mounted at the center of the fan seat, a holder at the bottom of the fan seat, a container within the fan seat, a top cap mounted on the top of the container, a fastening nut and a fastening means mounted at the bottom of the holder, characterized in that the fan seat includes central slot, a circular conduit wall, a plurality of inner blades mounted in between the conduit wall and the central slot, and a plurality of rotatable outer blade mounted at the outer surrounding of the circular conduit wall, the bearing is mounted within the central slot and the bottom shaft of the container is pivotally inserted into the shaft hole of the bearing, the protruded top end of the holder is connected to the bottom shaft of the container and is combined together by means of the fastening nut, and a fragrance platelet is mounted within the container having a protruded shaft to adapt to the center hole of the fragrance platelet.

Abstract: An ceiling fan applique and method for adorning the blades of a ceiling fan. An applique constructed of a thin, flexible material includes printed matter disposed on a front surface of the applique. Pressure sensitive adhesive is mounted to the rear surface of the applique. The applique has a predetermined shape substantially corresponding to the shape of the ceiling fan blade. A release liner is affixed to the rear surface of the applique to prevent the applique from becoming inadvertently affixed or damaged prior to intended use.

Abstract: A filter for a fan comprising air permeable material exteriorally embracing the suction portion of said fan.

Abstract: A free-standing overhead fan apparatus includes a stand and a fan mounted on the stand. The stand includes a base positioned on ground level and an elongated member extending upwardly from the base. The fan is mounted at the upper end of the elongated member, preferably about seven feet above ground level. The fan includes a housing containing an electric motor and a rotating shaft extending from the motor. The fan also includes fan blades radially extending from the motor shaft. The fan is mounted on the stand such that the motor shaft and fan blades are rotatable about a vertical axis to emulate a ceiling fan.

Abstract: An automatic cleaning system for a ceiling fan having a plurality of fan blades extending outwardly from a central motor driven hub comprising a plurality of cleaning units, each in a cleaning engagement with a top surface and a bottom surface of a different one of the plurality of fan blades; and a plurality of recoil units, each connected to the different one of the plurality of fan blades adjacent the central motor driven hub and an associated one of the plurality of cleaning units to enable each of the plurality of cleaning units to travel from a point adjacent the central motor driven hub to an outward end of the different one of the plurality of fan blades due to the centrifugal force when the ceiling fan is running and to retract each of the plurality of cleaning units to the point from the outward end of the different one of the plurality of fan blades when the ceiling fan is not running.

Abstract: A fan blade cover and strobe light for illuminating the same adapted for use with fan blades of ceiling fans and the like. The fan blade cover is a substantially rigid cover panel with dimensions corresponding to at least one major surface of a fan blade, and includes at least one member adapted for securing the cover panel to the fan blade surface in such a way as to cover the fan blade surface. The fan blade cover has at least one surface adapted for having designs, signage and other indicia thereon for illumination by a strobe light or lights. The cover panel can be constructed of materials such as, but not limited to, cardboard, poster board, fiber board, and other paper materials; solid and foamed plastics; and vinyl sheet material.

Abstract: A patio table and fan combination. The device uses a fan mounted on a pole that passes through the center of the patio table. The pole also supports an umbrella that can be used for shade when the table is located outside. The fan motor is mounted co-axially with the fan. The device includes pole mounted lights and a mist device. The patio table fan combination is powered by conventional household electrical outlet or by solar panels mounted on the patio umbrella. The central pole for the device comes in three pieces to facilitate shipping and assembly.

Abstract: A removable and replaceable cover for a ceiling fan blade is disclosed. The cover includes a first material which covers the bottom surface of the fan blade and wraps around the outer edges of the fan blade and a second elastic material which joins the ends of the first material and is positioned adjacent the top surface of the fan blade. One or more straps are attached to the open end of the cover and wrap around the arm which attaches the blade to the fan motor. A hook-and-loop fastener is provided on the end of the strap and a mating attachment is provided on the first material.

Abstract: Apparatus shears foreign matter such as lines, wires, nets and weeds that can entangle and befoul propellers, propeller shafts, bearings and related structure of propeller-driven, water born vessels. The apparatus shears by cooperative action of a rotating blade that rotates in conjunction with the propeller and a non-rotating blade supported on a non-rotating portion of the vessel. The non-rotating blade moves axially within its support. With each revolution, a slot follower connected to the non-rotating blade engages a slot carried by the rotating blade to adjust the axial position of the non-rotating blade to compensate for axial movement of the rotating blade. A wedge and valley mechanism prevents the two blades being forced apart during shearing action. Roller bearings, radially disposed, reduce friction between slot follower and slot to reduce wear on the parts and thereby prevent malfunction with prolonged operation and to provide low cost replacement of the bearings for maintenance.

Abstract: A pull cord deflector is comprised of a plate, having a channel, that is positioned between a ceiling fan housing and a switch locking nut. An extension arm is hingedly attached to the plate. The notched end of the extension arm is dimensioned to terminate beyond the periphery of a light globe of the ceiling fan. One or more optional springs extend between the plate and the extension arm.

Abstract: A handle structure for a flexible fan includes two corresponding holding brackets and two corresponding handle members. The holding brackets are provided at their inner sides with a plurality of receiving means and stop means so as to firmly clamp a segment of a steel wire frame of the flexible fan between the receiving and the stop means. The handle members are separately pivotally connected at one end to two ends of the holding brackets and respectively define a space for receiving two sides of the twisted and folded flexible fan therein when the fan is not in use and the handle members are pushed apart to abut against the frame of the fan. The handle members are formed with curved recesses for a comfortable grip by a the user's fingers. When the handle members are pushed to abut one another and become perpendicular to the fan, the user may stably grip the handle members to wave the fan easily.

Abstract: A controllable-pitch propeller for a sport-type watercraft has a push rod eccentrically connected to each blade displaceable in a bore of the propeller hub. The push rod is sealed with respect to the end of that bore by a multifold bellows whose radial flange is clamped by a cap of an axial flange of the housing in which the bore is provided.

Abstract: A portable fan device for use with a spray misting bottle which is capable of being mounted atop a spray applicating head portion of the misting bottle so that a fan blade unit of the fan device is positioned forwardly and in communication with an atomized spray nozzle of the spray head and cools and atomizes the mist spray issued by the nozzle. Releasable securing means such as an attachment bracket or contoured gripping tabs extending from the fan underside are employed for securing the fan body in a generally horizontal fashion atop the spray head. A stand member is held within a recessed cavity in the fan underside and can be rotated downwardly to support the fan device in an upright position for use as a portable fan once the fan body has been detached from atop the spray head. In a further embodiment, a gripping tab which forms part of the releasable securing means can provide the dual function of gripping part of the spray head and supporting the fan body in an upright position.

Abstract: Fan blade covers which are particularly useful for covering ceiling fan blades. The covers are easily removed and cleaned providing a safe means for cleaning ceiling fan blades. The covers are provided in numerous colors and decorative patterns allowing the selection of covers which match a room decor. The covers also comprise a balancing arrangement for the fan which includes a pocket positioned on the upper surface of the cover and a dispensing arrangement for dispensing and distributing deodorant throughout a room which includes a vented pocket for receiving a deodorant canister while the vented pocket and canister includes a visual deodorant depletion indicator.

Abstract: A helicopter's main rotor blades are removably attached to a hub, which is rotatably mounted on a mast. The base of the mast is attached to the helicopter's body by unthreaded, expandable bushing bolts. When inserted, the bolts' centerlines lie in a plane which perpendicularly intersects the axial centerline of the mast. The mast is hollow and encases a drive shaft. Splines at one end of the drive shaft removably engage splines on the engine transmission. The hub has a removal fitting for engaging an end of the drive shaft. When the mast is detached and pulled apart from the helicopter body for storage, the removal fitting forces the drive shaft splines to disengage from the tnansmission splines, and keeps the drive shaft inside the mast while the mast is being removed. The main rotor blades' pitch is controlled by a plurality of pitch control linkages. Each linkage is comprised of a first part connected to the mast and a second part connected to the helicopter body.

Abstract: An air freshener for attachment to a ceiling fan includes a storage container, a thick, porous fragrance cake impregnated with a fragrance secured inside the storage container, and "hook and loop" fasteners for attaching the storage container to the cover or a light fixture of the ceiling fan. The storage container preferably includes a bottom, a side wall and a lid. Together, the bottom and the side wall define a cavity in which the fragrance cake is secured. The lid is movable relative to the side wall so that the lid may be moved to expose the fragrance cake. The lid, the side wall or both have a plurality of apertures therethrough to permit ambient air to circulate around the fragrance cake to distribute the fragrance to the surrounding area as the air enters and exits the apertures and is further circulated by the ceiling fan.

Abstract: An air filtering, fume collecting mechanism is disclosed in which the contaminated air is drawn by a fan through a filter element which spins transversely across the flow of air being drawn by the fan. The filter element may be a disc removeably mounted on the hub of the fan blade assembly or it may be shaped to function as the impeller itself.

Abstract: An apparatus for locking a propeller is provided for reducing the risk of theft of a propeller from a motor. The apparatus comprises a cover plate to cover an end of the propeller shaft. A U-shaped bar encircling one blade on the propeller and connected to the cover plate secures a portion of the cover plate against the end of the shaft. A locking arm connected to the cover plate, encircling another blade on the propeller, and connected to the middle portion of the U-shaped rod secures the remainder of the cover plate against the end of the shaft.

Abstract: There is disclosed an elongate style portable fan device having an elongate body portion including a fan device mounted on the top end of the body portion. The elongate body portion is designed to lay flat on an underlying flat surface in a manner which maintains the fan device portion at an angle of approximately 30 degrees from the central horizontal axis of the elongate body portion such that the fan blades of the fan device are free to rotate above the underlying flat surface when in the fan activated mode. The elongate body portion includes stop means for providing a resting stop position for the elongate body portion in order to permit the fan blades of the fan device to rotate freely when in the resting position and in the fan activation mode while laying on a flat underlying surface. Switch means is provided to the device for alternating between a fan activation and a fan deactivation mode.

Abstract: An apparatus for tensioning a subsurface float line and the like during doyment of the line and thereafter includes a capstan rotatably mounted and located in a liquid medium, the capstan having a bore extending from one end of the capstan to the other end, the bore including a plurality of pump blades for moving the liquid through the bore when the capstan is rotated, the capstan also including turbine blades located around the circumference of the capstan and adjacent both ends of the capstan, the capstan also including a circular surface interposed between the turbine blades for communicating with the line to be tensioned. The pump and turbine blades do work when the capstan is rotated thereby creating a counter rotational (drag) force that tensions the line during and after deployment.

Abstract: A ceiling fan for cleaning air in a room wherein each blade of the ceiling fan has a cavity open to the top and bottom surfaces of each fan blade and a filter unit in each of the cavities but within the confines of the fan blade such that, when the ceiling fan is operated, the airflow created by the ceiling fan will be forced through the filter unit from the bottom surface through to the top surface, wherein the filter units can collect airborne particles.

Abstract: A marine propeller including a hub rotatable about a longitudinal axis and having a plurality of blades extending outwardly from the hub. Each of the propeller blades includes a fixed propeller blade stem and a removable cup extension. The cup extension defines the trailing edge of each propeller blade and is removably mounted to the propeller blade stem. The cup extensions can selectively be removed from the blade stems and new cup extensions attached in order to modify the amount of cupping included on the propeller.

Abstract: A ceiling-fan-blade-mounted air freshener apparatus includes a housing assembly which includes a lower housing portion and an upper housing portion projecting upward from the lower housing portion. The upper housing portion includes a plurality of vent apertures. An air freshener/matrix assembly is housed within the housing assembly. A housing-to-blade connector connects the housing assembly to a ceiling fan blade. In one embodiment, the housing-to-blade connector is comprised of a layer of pressure-sensitive adhesive bonded to a bottom side of the lower housing portion. The housing-to-blade connector further includes a peel strip removably adhered to a bottom surface of the layer of pressure-sensitive adhesive. The housing assembly includes a pointed end, and the air freshener/matrix assembly includes a complementary pointed end. The pointed end of the air freshener/matrix assembly is wedged into the pointed end of the housing assembly under an influence of centrifugal force.

Abstract: The installation links a supply conductor to an electrical device for de-icing a blade using at least one cable with a first stretch linked to the supply conductor by a connector and to a second stretch with an overhead hook in the form of flattened half loop, itself linked to the device for de-icing the blade by a second connector fitted on the blade, possibly via a straight and flat third stretch and a second overhead hook. The first hook is of nonscreened structure, with an elongate part of substantially flattened rectangular transverse section and with a concavity pointing towards a device for retaining and articulating the blade on a hub.

Abstract: An electrohydraulic actuator has a housing divided into pump and cylinder portions respectively containing a centrifugal impeller driven through a hub by an externally mounted motor, and a pushrod actuated by a piston and arranged to advance the piston and pushrod to deliver thrust when the motor is operated. The major parts except the motor and the pushrod are castings and only one size castings are required for a large range of thrust capacities. The impeller casting is machined to a diameter suitable for a desired thrust and a motor of required speed and horsepower for that thrust capacity is selected to drive the impeller.

Abstract: The installation for removing electrostatic charge and passing lightning current between a conductor of each blade of the rotor and a metallic part of the hub comprises at least one conductive member integral with the member for linking the blade to the hub in its angular deflections, and in electrical continuity with the conductor of the blade and held elastically in permanent contact with a conductive terminal integral with the hub and in electrical continuity therewith.

Abstract: An air filtering, fume collecting mechanism is disclosed in which the contaminated air is drawn by a fan through a filter element which spins transversely across the flow of air being drawn by the fan. The filter element may be a disc removeably mounted on the hub of the fan blade assembly or it may be shaped to function as the impeller itself.

Abstract: A portable fan device for use with a spray misting bottle which is capable of being mounted atop a spray applicating head portion of the misting bottle so that a fan blade unit of the fan device is positioned forwardly and in communication with an atomized spray nozzle of the spray head and cools and atomizes the mist spray issued by the nozzle. Releasable securing means such as an attachment bracket or contoured gripping tabs extending from the fan underside are employed for securing the fan body in a generally horizontal fashion atop the spray head. A stand member is held within a recessed cavity in the fan underside and can be rotated downwardly to support the fan device in an upright position for use as a portable fan once the fan body has been detached from atop the spray head. In a further embodiment, a gripping tab which forms part of the releasable securing means can provide the dual function of gripping part of the spray head and supporting the fan body in an upright position.

Abstract: A novelty ceiling fan is provided having an electric fan motor with separate stationary members and rotating surfaces, and a plurality of radially extending blades being secured to the one of the rotating surfaces. The ceiling fan also includes a tubular downrod for pivotally suspending the ceiling fan from a ceiling, and at least one electrical switch for selectively controlling the operation of the fan motor. A U-shaped mounting bracket is provided, securable to one of the stationary members of the fan motor, for detachably connecting a decorative globe to the fan motor substantially enclosing at least the lower and side surfaces. The decorative globe has upper and lower portions with the upper portion being comprised of a generally cylindrical side wall which defines an upper opening. The lower portion is selectively configured to generally depict conventional features of a novelty or cartoon character such as a bear head, the conventional features including a head, eyes, ears, a nose, a mouth and cheeks.

Abstract: A music box module is attached to a ceiling fan having a control box mounted on an underside thereof and at least one hole defined in a periphery of the control box. The music box module includes a music box mounted in the control box and having at least one slot defined in a periphery thereof and aligning with the hole. A supporting base is mounted on an underside of the music box and has at least one flange extending upwardly from a periphery thereof to be received in an inner wall of the music box. A bore is defined by a threaded portion of the flange and aligns with the slot. A positioning member extends through the hole, the slot and is securely engaged in the bore.

Abstract: A ceiling fan air freshener diffusion device comprising a scent receptive chamber, a removable drawer for holding a volatile scented medium and a heater for volatilizing the scent medium. The chamber comprises a housing defining a cap for mounting to the hub of a ceiling fan and a continuous sidewall extending downward from the cap. The sidewall defines scent diffusion orifices and a drawer receptive opening. A floor is secured to the housing, abutting the sidewall to seal the housing. An adjustment baffle captivated between the floor and the cap also defines scent diffusion control orifices for regulating diffusion of scent in conjunction with the scent diffusion orifices defined in the sidewall. A tab extending from the baffle through an adjustment slot in the side wall is used to control the aperture defined by the sidewall and baffle orifices together. The preferred embodiment uses a switched resistance heating element located within a base below the floor of the chamber to volatilize the scent medium.

Abstract: A fan blade cover for a fan blade of a ceiling fan includes a casing having an outer edge defining a main body. The main body has an outside surface and an inside surface. The outer edge of the main body is folded over toward the inside surface and is attached to the inside surface of said main body, thereby creating a passage. An elastic band is threaded through the passage. The cover further includes hook and loop fasteners which are attached to the casing in a manner so as to selectively fix the fan blade cover to the fan blade. The invention also includes a method of constructing a fan blade cover for a fan blade of a ceiling fan, the method including the steps of cutting a casing, the casing having an outer edge and a main body, the main body having a outside surface and an inside surface; folding over the outer edge of the casing toward the inside surface, thereby creating a passage, attaching the outer edge to the main body, and, threading an elastic band through said passage.

Abstract: A removable, washable decorative cover for each thin, flat fan blade of a paddle-type ceiling fan. The decorative cover includes a main sleeve of uninterrupted tubular shape, each end of which is open, and formed of highly elastic and expandable decorative fabric, preferably SPANDEX. The main sleeve is of sufficient elastic strength and sized substantially smaller in width than the width of the fan blade whereby, when mounted over a preselected main portion in length of the fan blade, the gripping action of the elastically stretched fabric conformingly against the surface of the main portion of the fan blade is sufficient to prevent movement therebetween when the ceiling fan is in operation. The cover may also include an end sleeve formed of the same elastic fabric and transverse width, one end of which is open, the other end of which is closed.

Abstract: Disclosed is an apparatus for emergency enablement of a boat propeller. The apparatus includes a central mounting plate having an aperture for engagement with one end of the propeller shaft to which the propeller is attached. A drive plate is affixed to the central mounting plate for drive engagement with the propeller. Upon striking an underwater object, bolts connecting the drive and mounting plate will shear to protect the boat's engine from damage. One or more cantilevered members, the proximal ends of which are fixed around the periphery of the central mounting plate, extend from the mounting plate for disposal within longitudinal spaces of the boat propeller.

Abstract: A hand-held deodorizer which includes a cylindrical housing having a centrally mounted fan, and upper and lower air permeable barriers. At least one of the air permeable barriers includes a filter which absorbs odors from air drawn therethrough. The deodorizer further includes a U-shaped handle attached to the periphery of the housing disguising the deodorizer so it resembles a drinking mug. The handle contains batteries and a push-button switch permitting the user to selectively provide power to rotate the fan. The deodorizer can easily be transported and manipulated by the handle and placed adjacent a source of wretched odor. Upon actuation of the push-button switch, the fan draws air from the source of odor through the filter or filters where the wretched odor is reduced or eliminated, and dissipates the odor-reduced air into the surrounding environment. A flagrance impregnated member masks the scent of the dissipated air by providing it with a pleasant odor.

Abstract: Compression washer assembly with line cutter for mounting on a boat propeller shaft between a shoulder on the shaft and the end of a propeller hub. The compression washer assembly comprises a hub portion with a cross section conforming to the shaft. The hub portion is fixed in a central opening in a sheet metal cup, the edge of which serves as a line cutting edge, and consists of a number of punched sheet metal washer.

Abstract: A ceiling fan safety tether to be used with a conventional ceiling fan. The ceiling fan safety tether retains a fan blade in close proximity to the fan motor thereby preventing the fan blade from becoming a flying projectile should a break in a fan blade bracket ever occur. The ceiling fan safety tether comprises a body portion having a first and second securement coupled thereto. The first securement is secured to the fan motor housing and the second securement is secured to the fan blade. The ceiling fan safety tether is designed to be interposed between the fan blade bracket and the fan motor housing at a first end and interposed at a second end between the fan blade and the fan blade bracket. Additionally, the ceiling fan safety tether serves to provide a dampening effect that prevents noise and vibrations created in the fan motor housing from being transmitted to the fan blade.

Abstract: The invention relates to hand-insertable, rigid plastic cover for use with an individual boat blade of a propeller of an in-board or outboard boat motor wherein each cover of the invention is integrally formed as a single unit using of a conventional plastic material such as polyethylene. Briefly, the plastic cover of the invention comprises a pair of broad side walls of a tear-dropped or elliptically shape placed in a side-by-side relationship and terminating at a U-shaped closed edge or end wall but being open at a concavely formed, transverse open top to permit easily insertion over the leading and trailing edges of each blade.

Abstract: An energy conversion device which comprises a stacked array of alternating yawable and fixed toroidal modules about a central core structure. The yawable toroids have typically four impact impellers mounted in their peripheral flow regions for the purpose of capturing flow energy. The fixed toroids are mounted to complement and further enhance fluid flow impact impeller energy capture and to provide housing means for a variety of matter both associated and unassociated with the energy system. The stacked array of a toroid with impellers, designated a Toroidal Rotor Amplifier Platform (TRAP.TM.), and a toroid without impellers, designated a Toroidal Wind Frame (TWF.TM.), is referred to in aggregate, when used for wind energy conversion, as a Wind Amplified Rotor Platforms (WARP.TM.) system. Under wind energy conversion use, a WARP.TM.

Abstract: A ceiling fan blade slip cover composed of a fitted case which is dimensioned to generally conform to the shape of a ceiling fan blade, wherein the mouth of the fitted case is closable about the arm of the ceiling fan blade. The mouth is used to install and remove the ceiling fan blade slip cover with respect to its respective ceiling fan blade. In this regard, it is preferred for the mouth to be provided with an elastic gather, and/or be provided with a releasable fastener, such as for example a VELCRO (trademark of Velcro, U.S.A.) type hook and loop fastener. A preferred material for the fitted case is a fabric having a selected color, pattern or other indicia thereupon which harmoniously matches the decor of the room. Other materials may be used, such as for example a sheet plastic or leather material. In the event a nonventilative material is used for the fitted case, one or more longitudinal slits are provided at the top side and a lateral slit is provided at each outboard corner thereof.

Abstract: A motorboat impeller comprises an axial portion having a through axial hole and having a plurality of blades mounted around the periphery thereof and further having a plurality of retaining slots in the inner wall of the through axial hole. The retaining slots have a predetermined depth and a predetermined length extending from the front end of the axial portion toward the inside of the axial portion along the direction of the axis of the axial portion. A mounting and dismounting element can be disposed in the retaining slots and is provided with a body of a polygonal construction and having a plurality of retaining blocks extending outwards. The retaining blocks are dimensioned to fit into the retaining slots. The body of the mounting and dismounting element can be held firmly with a hand tool to facilitate the turning of the axial portion.

Abstract: An electrically driven fan mounted on the brim or crown of a cap or other head gear is manufactured from plastic, and readily mountable on the head gear without the need for special tools or skills. Dry cell batteries are mounted in the crown of the hat and the impeller of the fan units acts within a recess within the fan unit to pull air downwardly across the face of the user.

Abstract: An air freshener apparatus having a recess defined by a tray, two sidewalls extending upwardly therefrom with overlapping flanges, and an upstanding end wall slidably received on a blade of a ceiling fan with a foam pad impregnated with a scent material received in the recess. Two hook-like arms extend outwardly from the tray for slidingly holding the air freshener apparatus on an upper surface of the fan blade.

Abstract: A salad bar-type food display and self service unit is provided which includes a base, a table or counter supported by the base, and a fan assembly mounted to the table and disposed above the table for circulating air above the top or display surface of the table. A sneeze/cough guard may be mounted to overlie the table, in which case the air circulating fan or fans are preferably mounted above the guard. The salad bar unit provides desirable air circulation and a barrier to flying insects without compromising portability and/or requiring structural modification of the store or restaurant in which it is used.