hook on and lock blades for ceiling fans . hooks on either end portions of blades , on mounting arms or on rotors adjacent to the ceiling fan motors allow the blades to easily hook onto the motor assembly . folding down the blade causes at least one lock to exist that restricts lateral movement between the blade and the motor . there are various types of techniques for locking the blades to the arms that can include tightly positioning a portion of one connector between two raised edges and / or walls of another connector . additionally , the locking techniques can use snapably mateable male and female type fasteners , and the like , where the techniques restrict any lateral movement between the blades and the motor . the invention does not need removable fasteners such as screws and the like , to assemble the blades onto the ceiling fan . the hook and lock blades can be reversibly mounted allowing for greater versatility .