摘要:
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. The different versions can include guide posts for allowing only one single fastener to be needed. A third embodiment allows the inwardly bendable snapable fasteners to be removable with screws.
摘要:
A method for using relatively low-cost silicon with low metal impurity concentration by adding a measured amount of dopant and or dopants before and/or during silicon crystal growth so as to nearly balance, or compensate, the p-type and n-type dopants in the crystal, thereby controlling the net doping concentration within an acceptable range for manufacturing high efficiency solar cells.
摘要:
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. The different versions can include guide posts for allowing only one single fastener to be needed. A third embodiment allows the inwardly bendable snapable fasteners to be removable with screws.
摘要:
A method for using relatively low-cost silicon with low metal impurity concentration by adding a measured amount of dopant before and/or during silicon crystal growth so as to nearly balance, or compensate, the p-type and n-type dopants in the crystal, thereby controlling the net doping concentration within an acceptable range for manufacturing high efficiency solar cells.
摘要:
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. A fifth version has the blade with slots fit over the end of the mounting arm so that pulling the blade from the mounting arm causes spring loaded piston to interlock into a interior wall groove in the slot of the blade.
摘要:
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.
摘要:
Slide in, hook on and lock blades for ceiling fans having vibration and noise reduction through resilient members. A mount attached to the motor can be bendable by a hinge so a raised portion can receive a slot on the blade. The mount has a post where a blade can be hooked. Folding the blade locks the blade substantially eliminating lateral and vertical movement of the blade and can also eliminate vibration and noise. A clip can be used to lock the blade or eliminate lateral and/or vertical movements. An expandable and contracting clip can hold the blade and can be used with a post or posts, and can quickly allow the blade to be snapped into place. The invention allows centrifugal forces and/or the overall weight of the blades(by gravity) to hold the blades.