Patent ID: 6183262
Filing Date: 2001-02-06
Classification: B43L

Abstract:
A magnetic drawing board comprising:an encircled seat,a plurality of iron powders, said iron powders each have different colors and coarseness,a scraping plate, a plurality of nibs anda magnetic pen; whereinsaid encircled seat comprises a magnetic pad, said magnetic pad is provided with a transparent viewing plate spaced from the magnetic pad,said scraping plate is positioned between said magnetic pad and said viewing plate,a pen receiving slot and a plurality of nib receiving slots are provided on said encircled seat to receive said magnetic pen and said plurality of nibs,said magnetic pen comprises a pen body and a nib, said pen body is provided with an engaging seat, and each of said nibs are provided with an engaging portion which is received in said engaging seat when each of said nibs is mounted on said pen body; and whereinsaid encircled seat is provided at one edge thereof with a plurality of powder grooves, screens are provided between each adjacent pair of said powder grooves, meshes of said screens are arranged so that sizes of said meshes varies from largest to smallest in sequence, and said iron powders are each received in a corresponding one of said powder grooves through said meshes according to a coarseness of each of said iron powders,a first one of said powder grooves is associated with a largest mesh and has a large collecting port, remaining ones of said powder grooves each has a port, a movable stop plate is pivotably positioned above said collecting port and said ports, said movable stop plate is pivoted by a manipulating rod pivotably positioned on a top of said encircled seat to control opening and closing of said collecting port and said ports of said powder grooves,said pen body includes a press button with a toothed portion on one end, said nib is provided with a rotation axle for mounting a toothed wheel and a magnetic seat comprised of a plurality of north magnetic poles and south magnetic poles alternatively arranged to form a circle, wherein depressing said press button causes said toothed wheel to rotate said magnetic seat so as to alter an amount of attracting or repelling forces of said north magnetic poles and south magnetic poles on said nib; such thatwhen said nib of said magnetic pen is placed on said transparent viewing plate above a powder groove containing a desired iron powder to attract iron powder onto said nib, said magnetic pen is then moved along said transparent viewing plate so as to pull said desired iron powder out of said powder groove onto said magnetic pad of said encircled seat beneath said magnetic pen, said engaging seat in said pen body being press-controlled to vary displacement of said north and south magnetic poles, such that in conjunction with raising and lowering said magnetic pen, a user releases said desired iron powder at desired positions and in desired amounts, said desired iron powder is rapidly absorbed in drawing areas and paths on said magnetic pad to form contours and patterns of a colored drawing, and following construction of said colored drawing,the user uses said scraping plate to scrape said iron powders of various colors from said magnetic pad into said powder grooves, said iron powders are screened by said screens having various sizes of meshes to separate said iron powders by coarseness, such that each of said iron powders falls into said corresponding one of said powder grooves, so that said iron powders are recovered and can be used repeatedly.