Abstract: A lockable quick-release blade assembly for ceiling fans is disclosed. The lockable blade assembly comprises a fan blade having one end for inserting into a blade receiving slot in a fan rotor. The blade inserting end is provided with a notch on the longitudinal side for lockably engaging with a blade locking member. A housing defining the blade receiving slot and comprises a blade locking member and a blade releasing member. The blade locking member has a spring biased locking bolt for locking into the notch of the inserted fan blade. The blade releasing member has a spring biased slide slice located atop the housing and abutting the spring biased locking bolt at a 45° angle so that upon a user pressing the releasing member the locked fan blade is released from the locking member.

Abstract: A securing device for securing a connecting arm to a ceiling fan blade. The blade includes a hole through which a male member of the arm is inserted. The securing device comprises a plate having an aperture through which the engagement end subsequently extends with the neck staying within the aperture. The aperture includes a smaller part having a rim portion such that the plate is slidable in a first direction along the blade surface until the rim portion engages behind the engagement end. The rim portion is enlarged for receiving and engaging with the engagement end in a second direction opposite to the first direction. The plate includes a resilient finger deformable upon engaging the blade surface, thereby resiliently maintaining the engagement of the enlarged rim portion with the engagement end in the second direction. The finger engages the blade surface by friction, thereby holding the plate against sliding relative to the blade in the second direction.

Abstract: A fan comprising one or more releasable fan blades secured to a hub portion. A spring biased pin may be mounted in a motor housing to automatically secure a fan blade when it is connected with a motor body.

Abstract: A fan blade assembly includes a mounting arm having a first end adapted to engage a fan rotor and a second end adapted to receive a fan blade. At least two mounting posts are disposed on the second end of the mounting arm and a fan blade has apertures for receive the mounting posts. A clamp plate has apertures with a receiving portion and a retaining portion. The receiving portion is adapted to receive the mounting posts and the clamp plate is movable to a securing position where the retaining portions engages with the mounting posts to secure the clamp plate and fan blade to the mounting arm.

Abstract: The present invention provides for an easily installed ceiling fan. The fan includes a quick connect device for physically mounting the fan blades to a ceiling fan hub. The fan blades can be hung from the drive ring hub in a collapsed, vertical orientation and then quickly snapped into the extended operating position.

Abstract: A fan blade assembly includes a mounting arm having a first end adapted to engage a fan rotor and a second end adapted to receive a fan blade. At least two mounting posts are disposed on the second end of the mounting arm and a fan blade has apertures for receive the mounting posts. A clamp plate has apertures with a receiving portion and a retaining portion. The receiving portion is adapted to receive the mounting posts and the clamp plate is movable to a securing position where the retaining portions engages with the mounting posts to secure the clamp plate and fan blade to the mounting arm.

Abstract: A fan assembly according to which a block member is connected to a rotor end casing and an arm member having a blade connected thereto is mounted to the block member. One of the members has a radially extending slot formed therein and the other member has a mounting flange adapted to extend into the slot when the arm is moved radially outwardly relative to the block member to mount the arm to the block member without the need for additional components.

Abstract: A blade bracket to releasably connect a blade of a ceiling fan to the rotor, the blade bracket comprising a mount adapted for attachment to the rotor and a blade support securable to the blade and releasably attachable to the mount, the mount comprising means to permit securable attachment to the rotor at one end, and at another end, a sleeve having an entrance and a base, the blade support comprising, at one end, means for securing a fan blade thereto and at another end thereof a neck which is releasably seatable into the mount sleeve through its entrance, and a lock mechanically associated with the mount and adjustable when the neck is seated in the sleeve to lock securely said neck in the sleeve, with the fan blade in proper orientation, for operation of the fan.

Abstract: The present invention is directed toward a mechanical fastener for attaching a fan blade to a fan blade holder. The fan blade is attached to a fan blade holder by means of a spring clip. The spring clip engages a stud attached to the fan blade holder; the stud extends through an aperture in the fan blade. The invention may contain one or more studs or apertures, and the spring may have an arcuate shape in cross section.

Abstract: Quick attachable and detachable mounting arms for ceiling fans. A first version has flat headed fasteners initially attached to one end of mounting arms, with key-hole slots in the endshield of the ceiling fan motor. The user raises the mounting arm so that the flat headed fasteners fits through the larger openings in the keyhole slots and then pulls the mounting arm outward until the arm locks in place by the smaller opening portions of the keyhole slots. Rubber type gaskets and washers help lock and hold the mounting arms in place. The flat headed fasteners can also be located on the endshields with the keyhole slots on mounting arms. A second embodiment includes inwardly deformable springably snapable fasteners that can be located on the ends of the mounting arms which can deform inwardly and expand after passing through slots on the endshield of the rotor. Alternatively, the fasteners can be located on the bottom of the endshield with the receiving slots on the ends of the mounting arms.

Abstract: Easy to attach and detach blades for overhead ceiling fans. One version has a fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A similar second version has a decorative bottom cover having snappable tapered protrusions which attach through the keyholes and into mateable through-holes in the mounting arm. The third version has a protruding end portion of the blade that fits into a slot in the mounting arm where spring loaded pistons press into grooves in the protrusion end portion of the blade. Latching handles allow users to manually move the pistons. A fourth version has a slot in the blade which fits about a mateable housing in the mounting arm where opposing spring loaded pistons press into interior wall grooves in the slot of the blade.

Abstract: A ceiling fan bracket has a first end connected to a ceiling fan blade and a second end of the ceiling fan bracket has two L-shaped wings. A connector is connected to the second end of the ceiling fan bracket and has two tongues. A motor casing has a plurality of L-shaped holes and each L-shaped hole includes a wide portion located close to a center of the motor casing and a narrow portion located close to a periphery of the motor casing. Each wing is engaged with the narrow portion of the L-shaped hole and each tongue is engaged with the wide portion of the L-shaped hole. The eccentric force applied to the ceiling fan bracket secures the ceiling fan bracket to the L-shaped hole in the motor casing.

Abstract: A fan assembly and a method of assembling same according to which a mounting flange is provided on an arm to which a blade is connected and a slot is provided in the rotor end casing of the fan motor. The flange is inserted in the slot and a wedge is created between the flange and the surface of the end casing defining the slot to secure the arm, and therefore the blade to the end casing.

Abstract: Easy to attach and detach blades for overhead ceiling fans. A first version has a ceiling fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A second version is similar to the first and has a decorative bottom cover having snappable tapered protrusions which attach through the keyholes and into mateable through-holes in the mounting arm connection. The third version has a protruding end portion of the blade that fits into a slot in the mounting arm where spring loaded pistons press into grooves in the protrusion end portion of the blade. Latching handles allow users to manually move the pistons. A fourth version has a slot in the blade which fits about a mateable housing in the mounting arm where opposing spring loaded pistons press into interior wall grooves in the slot of the blade.

Abstract: A fan assembly and a method of assembling same according to which a mounting flange is provided on an arm to which a blade is connected and a slot is provided in a mounting ring. The flange extends in the slot, and a retainer engages the arm member. The retainer and the mounting ring are attached the end casing and a post is provided in the slot for extending in a bore formed in the flange.

Abstract: A collar of a ceiling fan is composed of a plurality of sectors and each sector has a protrusion extending from a top thereof and a recess defined in an outside thereof. A resilient member is connected to each sector and includes a first portion having an aperture for receiving the protrusion, and a second portion which is a triangular member including two inclined sides. The resilient member is engaged with the recess of the sector corresponding thereto. The blade bracket has an end block which is engaged with the recess corresponding thereto and compressed by one of the inclined sides of the resilient member.

Abstract: In a fan including a hub mounted for rotation and a plurality of fan blades, an attachment assembly for detachably engaging at least one of the plurality of fan blades with the hub, the attachment assembly comprising a stop carried adjacent an end of a selected one of the plurality of fan blades, a socket carried by the hub for receiving the end of the selected one of the plurality of fan blades, and an abutment mounted for movement between a first position to permit the end of the selected one of the plurality of fan blades to admit into the socket, and a normal second position against the stop.

Abstract: A ceiling fan includes a motor casing with an engaging ring connected to the bottom of the motor casing, the engaging ring having a plurality of tapered recesses defined in the bottom thereof and each of the recesses having an open end in the inner periphery of the ring and a closed end on the outside of the ring. Each of the recesses has two grooves defined in the two sides thereof. Each of the fan blade brackets has two flanges to be received in the grooves. The first end of each of the end members is stopped by the closed end of the recess. A plurality of balls movably received in the ring and the balls respectively extend into the respective recesses so as to contact the second end of the end members in the recesses.

Abstract: The present invention is directed to the general field of ceiling fans and more particularly to the field of ceiling fans with easy install features. Such a fan includes an electrical quick connect device and an articulating fan blade assembly. The quick connect device includes a plug/receptacle configuration enabling the fan to easily connect to an electricity supply while providing the gravitational and rotational support required by the fan. The fan blade assembly includes a drive hub having a series of slots to receive the neck of a fan blade. The fan blade neck is secured in the slot in a fashion that allows for articulation of the blade relative to the fan or removal of the fan blade from the fan.

Abstract: The connecting device includes rotor and blade mounting segments each secured on a rotor and a fan blade at a respective connecting end thereof. A socket end of the rotor mounting segment extends in a radial direction relative to the rotor, and has an insert wall with an insert opening, an insert slot confined by upper and lower inner walls and extending in the radial direction from the insert opening, and an upper outer wall opposite to the upper inner wall. The upper outer wall has a recess communicated with the insert slot to form a retaining wall. A plug end of the blade mounting segment has a bottom wall to be fitted into the insert slot from the insert opening. A resilient retainer has a proximate end secured on the bottom wall, and a distal end with an engaging spring protrusion to provide a biasing force away from the bottom wall.

Abstract: A connecting device is provided to connect a fan blade to a rotor of a motor of a ceiling fan. The connecting device includes a bottom member disposed transverse to and rotated about an axial direction of the rotor. A circumferential wall extends upwardly from a periphery of the bottom member. A mounting arm has an anchored end adapted for mounting the fan blade thereon, and an anchoring end disposed to be brought to anchor on the bottom member such that the mounting arm is oriented in a radial direction relative to the bottom member. A limiting unit is disposed between the anchoring end and the bottom member to limit further movement of the anchoring end relative to the bottom member once the anchoring end is pulled away from the bottom member. At the same time, a biasing member is disposed to bias the anchoring end to move away from the bottom member. By virtue of the limiting unit and the biasing member, the anchoring end can anchor on the bottom member steadily and conveniently.

Abstract: A connecting device includes a bottom member with a periphery for attaching on a rotor of a motor, a circumferential wall which extends upwardly from the periphery, and a mounting arm which has an anchored end adapted for mounting the fan blade thereon and an anchoring end for anchoring on the bottom member such that the mounting arm is oriented in a radial direction relative to the bottom member by guidance of a guiding member. A tightening member is disposed to tighten the anchoring end relative to the bottom member through a clamping force generated in a circumferential direction of the bottom member when the anchoring end is pulled away from the bottom member in the radial direction. A retaining member is disposed between the tightening member and the anchored end in the radial direction, and has an engaging spring member that abuts against the circumferential wall once the anchoring end is moved away from the bottom member.

Abstract: An interchangeable fan blade system for a ceiling fan, made up of a set of adapters having a plurality of elongated attachment apertures that allow the adapter to be threadably fitted to virtually any type of fan support arm, and a complimentary set of interchangeable fan blades. The adapters include one of a variety of connectors for attaching one end of the fan blades to the support arm. The one end of the fan blade is configured and adapted, or otherwise provided with mating connector elements adapted to engage the connectors of the adapters, thereby allowing the fan blades to be removably attached to the adapters. A second embodiment of the interchangeable fan blade system is a set of interchangeable fan blades having a plurality of elongated attachment apertures which allow the fan blades to be secured to virtually any type of fan arm, by threading a plurality of shoulder cap screws and a plurality of male-female connectors though the plurality of attachment apertures.

Abstract: A fan mounting arrangement of the type comprising a blade assembly incorporated to a tubular central hub (1, 10) fitted into a shaft end (2, 20) of a motor (M), the central hub (10) having at least one engaging projection (11) fitted into a corresponding engaging recess (21) provided at an end portion of the shaft end (20), in order to mount the central hub (10) to said shaft end (20) restraining said parts from relative movements, the fitting being obtained by the elastic deformation of part of the lateral wall of said central hub (10).

Abstract: A turbine blade assembly composed of a rotor which is rotatable about a turbine axis of rotation and a plurality of turbine blades supported by the rotor, each blade having a root and the rotor being provided with a groove shaped for holding each root in a manner such that the root and groove have mutually contacting surfaces which apply a radially inwardly directed restraining force to the root, the root further having a bottom facing the turbine axis and the groove having a base which is located radially inwardly of, and faces, the root bottom. The mutually contacting surfaces of the root and the groove are pressed together by means of at least one disc spring compressed between the root bottom and the groove base.

Abstract: A wind turbine assembly including a rotor body having mounted thereon a plurality of rotor blades. Each of the rotor blades may be joined at an inner extremity to a blade stem projection extending interiorly into the rotor body and secured to the rotor body by a torsional-spaced and axial-shock damping connection. The blade stem projection may also be secured within the rotor body in a manner allowing limited rotation of the blade stem projection relative to the rotor body, corresponding to a selective range of pitch of the associated rotor blade, with a system for rotating a blade stem projections of each of the rotor blades by corresponding degrees of rotation to provide a predetermined pitch of the rotor blades. Also disclosed are pitch-damping tower designs, and an integrated design wherein the tower is pitch- and yaw-damped.

Abstract: A mounting bracket for a ceiling fan blade is cut into two separate pieces that are pivotally interconnected to one another so that the blade is pivotal in either of two directions about the pin. A lock ring is positioned radially outwardly of the pivot point to lock the blade into its operable position. Rotation of the lock ring until a slot formed in the lock ring is in alignment with the mounting bracket neck frees the mounting bracket to pivot downwardly, facilitating cleaning of the blade. In a second embodiment, a mounting bracket releasably couples together inward and outward parts of the mounting bracket so that the fan blade is completely detachable from the motor assembly to facilitate cleaning of the blade. In a third embodiment, a bag having cleaning pads at its mouth is used to clean either the pivotally mounted blade or the releasably coupled blade.

Abstract: An electric fan has a universally adjustable mounting which includes a vertical stem rotatable in a pedestal, and a pair of support joints extending above the stem and pivotal in mutually perpendicular planes. It is therefore possible to position the fan in lateral displacement from the stem, such that its back thrust creates a torque force tending to rotate the stem. The stem at its lower end has a base plate parallel to the pedestal. A pair of ball-and-spring mechanisms located between the base plate and pedestal permit the stem to be manually rotated to a selected position of adjustment where the balls engage a corresponding pair of holes. Yet the spring strength is sufficient to resist the torque produced by operation of the fan.

Abstract: A blade support and blade assembly has a cylindrical blade support with a slot in the outer periphery, the root of a blade disposed in the slot. The blade root has a groove in the bottom surface into which a locking pin, biased by a spring, is biased into the groove to lock the blade to the blade support. A bore is formed completely through the blade base extending from the outer surface thereof to the location of the locking pin, and a pin displacement, which may be a rod or a supply of pressurized fluid is operative to displace the pin from the groove in the blade base to permit removal of the blade root from the slot in the blade support. Hardened inserts may also be provided, either in the blade root or the blade support slot to strengthen the area of contact of the locking pin with the blade support and/or the blade root.

Abstract: A fan having reversible blades supported on a ring. The blades have means for holding the blades against rotation around thin central axis so that they can be selectively set to either blow cooling air forward away from the driver or rearward to add to the comfort of the driver. The resilient means urging the blades outward is made up of rubber cylinders that receive the hubs of the blades. One end of the cylinder rests on the fan while the thick end of the cylinder rests on the fan blades. The cylinder has a barrel shaped inside surface which it in giving the sleeved a generally uniform spring rate throughout its entire excursion.

Abstract: A cooling fan and hub support for a vehicle with reversible blades is disclosed. The fan has a hub support comprising an outer ring having inwardly extending projections and an inwardly directed flange. Each blade has a stem received in a hole in one of the projections. An inner retaining ring which has outwardly extending projections is supported concentric with the outer ring. A helical spring is received in each of the projections and extends into a blind hole in each stem and the inner end of the spring rests on a retaining ring. The outer ring has spaced holes for attaching it to an engine shaft. The retaining ring has convolutions which curve outwardly around each of the spaced holes and have an arcuate circumferential part that supports each inner end of a spring.

Abstract: Two position fan blade attachments or blade iron assemblies for sealing fans provide for the individual adjustment of the paddle-type blades into two preselected angular positions providing for either a downward or upward flow of air. The blade attachments provide detents or interengaging locking cams which are maintained in either one of the preselected positions by a spring and by the centrifugal force applied to the blade. In one embodiment, the interengaging structure includes a leaf spring which has two recesses or openings engageable with a ball. In another embodiment pairs of inclined ramps are mutually engageable with corresponding pairs of camming recesses.

Abstract: The windmill stalling and speed control device is mounted in the blade supporting hub of a windmill and is operative in response to blade rotation induced by a blade pitch control unit. The device includes a biasing assembly mounted to oppose blade rotation in at least one direction and a stage adjustment unit which operates to aid the biasing unit and increase the opposition to blade rotation when the windmill hub and blades reach and remain within predetermined speed ranges.

Abstract: A fan, with reversible blades, having a hub receiving the stem of the blades and an inner retaining ring, which has outwardly extending projections, supported concentric with the hub. A helical spring is received in, and actually extends into, a blind hole in each stem, and the inner end of the spring rests on the retaining ring at the projection urging the blades outward.