Powered mechanical apparatus for removing frost and snow from windshield and other viewing areas

Abstract

A handheld mechanized windshield scraper with a built-in blower to remove snow, ice and other material from a motor vehicle windshield and window panes. The blower tube is tapered to increase air velocity. A plurality of scraper blades is rotatably mounted on a shaft away from the blower to scrape material off of the windshield. Vents are provided in the casing for air to blow the scraped snow out from the work area. The unit can have a built-in power source or can be connected directly to the power outlet of the automobile.

1 . A mechanized handheld scraper for scraping snow, frost and ice from a surface comprising of a fan assembly to blow air on the scraped material, a reduction gear assembly, a scraper assembly connected to said reduction gear assembly, an electric motor to power said fan assembly and said reduction gear assembly, a cylindrical hollow body having a first end and a second end, said second end having an opening, a tubular hollow handle having a first end and a second end, a power source and a switch; said cylindrical hollow body housing said fan assembly, said electric motor, said reduction gear assembly and said scraper assembly; said tubular hollow handle housing said power source and said switch; said power source connected to said electric motor via said switch.  
   
   
       2 . A cylindrical hollow body of  claim 1  where said cylindrical hollow body has a plurality of vents on its circumference close to said second end for scraped material to be blown out.  
   
   
       3 . A cylindrical hollow body of  claim 2  where said cylindrical hollow body is uniform in diameter.  
   
   
       4 . A cylindrical hollow body of  claim 2  where said cylindrical hollow body is tapered from said first end to said second end.  
   
   
       5 . A cylindrical hollow body of  claim 2  where said cylindrical hollow body has an opening at said first end for air inlet; said opening covered by a permeable membrane.  
   
   
       6 . A fan assembly of  claim 1  where said fan assembly is an axial flow fan; said axial flow fan drawing air from said opening at said first end in said cylindrical hollow body.  
   
   
       7 . A cylindrical hollow body of  claim 2  where said cylindrical hollow body has an opening along the circumference near said first end for air inlet; said opening covered by a permeable membrane.  
   
   
       8 . A fan assembly of  claim 1  where said fan assembly is a radial flow fan; said radial flow fan drawing air from said opening near said first end in said cylindrical hollow body.  
   
   
       9 . A reduction gear assembly of  claim 1  where said reduction gear assembly has a first end on a first plane, a second end on a second plane; said first plane parallel to said second plane; said first end accepting circular motion as input; said second end providing circular motion as output; said output angular velocity less than said input angular velocity.  
   
   
       10 . A scraper assembly of  claim 1  where said scraper assembly has one scraper blade connected radially to a scraper blade assembly shaft; said scraper blade having a radial length less than the radius of the inner circle inscribed by said second end of said cylindrical hollow body.  
   
   
       11 . A scraper assembly of  claim 10  where the scraping edge of said scraper blade assembly is substantially on the same plane as said second end of said cylindrical hollow body.  
   
   
       12 . A scraper assembly of  claim 11  where said scraper blade is flat.  
   
   
       13 . A scraper assembly of  claim 11  where said scraper blade is curved.  
   
   
       14 . A scraper assembly of  claim 1  where said scraper assembly has a plurality of scraper blades connected radially to a scraper blades assembly shaft; said scraper blades having substantially the same angular distance between consecutive blades; said scraper blades having substantially the same linear length; said scraper blades having a radial length less than the radius of the inner circle inscribed by said second end of said cylindrical hollow body.  
   
   
       15 . A scraper assembly of  claim 14  where said scraper blades have their scraping edges on substantially the same plane; said plane of said scraping edges being substantially the same as the plane of said second end of said cylindrical hollow body.  
   
   
       16 . A scraper assembly of  claim 15  where the radial ends of said scraper blades are connected to a ring to prevent deflection of said scraper blades; bottom plane of said ring being above said plane of said scraping edges.  
   
   
       17 . A scraper assembly of  claim 16  where said scraper blades are flat.  
   
   
       18 . A scraper assembly of  claim 16  where said scraper blades are curved.  
   
   
       19 . A scraper assembly of  claim 18  where said scraper blades are curved in the same direction by the same angle.  
   
   
       20 . A tubular hollow handle of  claim 1  where said first end of said tubular hollow handle is attached to said first end of said cylindrical hollow body; said tubular hollow handle having an axis at an angle to the axis of said cylindrical hollow body.  
   
   
       21 . A power source of  claim 1  where said power source is a battery of rechargeable cells internal to said mechanized handheld scraper.  
   
   
       22 . A power source of  claim 1  where said power source is external to said mechanized handheld scraper.