Patent ID: 6137194
Filing Date: 2000-10-24
Classification: G09B,H02K

Abstract:
A low voltage nail electric motor used for motivational teaching comprising: a nail electric motor armature and a motor base wherein the bearings for the armature shaft of said nail electric motor are attached to the tops of bearing support posts which protrude vertically upward from said motor base and where the armature of said electric motor turns in a magnetic field created by button type permanent field magnets affixed to support posts which are attached to the motor base and where power to the disk commutator of said nail electric motor is supplied through terminal screws and sheet metal brushes attached to said motor base and where the armature of said electric motor consists of an armature shaft made from an unaltered length of threaded rod where said shaft includes and passes in succession through: a bearing made from a short piece of round metallic tubing, a length of spacer tubing to correctly position the armature pole pieces between the button field magnets, an armature pole nut which secures and holds nail pole pieces in position on said armature shaft, a pair of metallic pole washer which provide support for the nail pole pieces of said nail electric motor, a second armature pole nut which serves the same purpose as the first; a commutator compression nut to hold a disk commutator in position on the armature shaft, a non-metallic disk commutator with equally spaced notches on its rim where said notches are equal in number to the number of nail pole pieces of said nail motor and where the purpose of said notches is to receive pole piece magnetic wire, a second commutator compression nut which serves the same purpose as the first; a second length of spacer tubing which serves the same purpose as the first, a second bearing constructed the same as the first; a set of five or more nail armature pole pieces made from common nails the bodies of which nails are sandwiched between said nail motor metallic pole washers where said nail pole pieces are all of the same length and are uniformly spaced and arranged to project radially outward from the nail motor armature shaft to form a star like configuration around the armature shaft and wherein, after initial tacking with hot glue, the bodies of said nails are securely clamped between the metallic pole washers by the armature pole nuts; a commutator assemblage procedure whereby the commutator of said nail electric motor is secured by tightening the disk commutator compression nuts while disk commutator notches are vertically aligned with the nail bodies; magnetic wire of sufficient length to form electromagnetic coils around each nail body; a magnetic wire winding procedure whereby armature poles are formed by winding magnetic wire around each nail pole piece where all nail pole pieces are wound sequentially either clockwise or counterclockwise with the magnetic wire from each pole piece going to said disk commutator before succeeding nail pole pieces are wound and where said magnetic wire, upon arriving at said disk commutator, is woven around two adjacent rim notches on said disk commutator to form a commutator segment on the face of said disk commutator and where said winding then proceeds until all nail pole pieces are wound and all necessary commutator segments have been formed on the face of said disk commutator and where said nail motor is then made operational by removing the insulating magnetic wire coating from the face of the disk commutator so that positive electric contact can be made with the two flexible sheet metal brushes which are attached to said motor base; operational principle whereby turning of said armature shaft of said nail electric motor is achieved by applying a direct current voltage source to the sheet metal brushes located on said motor base causing an electric current to flow from the negative brush to the positive brush through the disk commutator and the coils of the nail pole pieces with the resulting effect that one half of said current flows in one direction around the upper nail pole pieces while the other half of said current flows around the lower nail pole pieces in the opposite direction causing the upper electromagnetic nail pole pieces to take on a polarity opposite the lower nail electromagnetic pole pieces thus creating an overall armature electromagnetic field oriented ninety degrees to the permanent magnetic field being generated by the field permanent magnets and where, because of the alignment of the spaces between wire commutator segments and the nail pole pieces, the rotating nail electromagnets become demagnetized as they approach the field magnets.