Single Handle Double Bladed Ice Removal Devices

Abstract

A two bladed ice shovel and a two bladed windshield ice scrapper each having a single handle bar are disclosed. The collecting blade of the shovel has its axis substantially aligned with the axis of the handle bar. The axis of the second blade termed, chopping blade remains above the axis of the collecting blade. The axes of the two blades form a 30 to 60 degree angle. During ice removal, the chopping blade delivers roughly constant volume of load onto the shovel, leads the way, chops by vibratory hammering, the ice formed on the pavement; and the collecting blade follows and collects chopped ice allowing ice removal. The structure of the chopping blade provides a convenient second handle for ease of load disposal if desired. A second embodiment of the apparatus allows better removal of ice and snow from vehicle windshields.

I claim: 
     
         1 . A Single Handle Double Bladed Ice Removing Devices and methods for removing ice from surfaces such as driveways and pavements comprising:
 a handle bar with two ends,   a chopping blade and,   a collecting blade.   
     
     
         2 . The chopping blade of  claim 1  securely positioned and mounted via a bent pipe on the said handle bar with the chopping blade forming an acute angle to the said collecting blade but leading the collecting blade during shoveling; the chopping blade positioned above the collecting blade when viewed during shoveling with a minimum and a maximum gaps between the two blades; the chopping blade and its supporting structure having an approximate shape like an ellipse with its concavity towards the ground when viewed during shoveling; said chopping blade having an edge called the leading edge of the chopping blade which leads the shoveling journey of the shovel; the minor axis of the said chopping blade is offset from the axis of the handle bar and forms an angle with the horizon larger than the angle formed by the axis of the said handle bar, and minor axis of the chopping blade and the axis of the handle bar lie on the same vertical plane; the center of gravity of the chopping blade and its supporting bent pipe being located well above the ground and the center of gravity of collecting blade; the weight of the chopping blade and its supporting bent pipe causing an impact to chop ice during shoveling; the said chopping blade having mounting devices to detachably secure the chopping blade to the said handle bar; the said mounting devices being designed to affect vibratory motion of the chopping blade to hammer on the ice during shoveling; the leading edge of the chopping blade forming a gate to allow only a metered amount of snow and ice onto the collecting blade thereby making the load on the shovel roughly constant; the line of action of force exerted through the handle bar passing well behind the chopping edge of the shovel such that a torque is induced on the chopping edge that creates the upward motion or bumpy ride of the chopping edge during when the shovel is pushed forward; the leading edge of the chopping blade restricting the forward movement of the chopped ice facilitates the pickup of the chopped ice by the trailing collecting edge on to the shovel: and the said leading edge of the chopping blade being designed of heavy material such as metal so as to enhance chopping of ice 
     
     
         3 . The collecting blade of  claim 1  securely positioned and mounted on the said handle bar with the collecting blade forming the said acute angle to the chopping blade but lagging the chopping blade during shoveling; the collecting blade having an approximate shape like a scoop with its concavity towards the sky when viewed during shoveling; said collecting blade having an edge called the lagging edge of the collecting blade which lags the leading edge of the chopping blade during shoveling journey of the shovel; the minor axis of the said collecting blade and the axis of the handle bar approximately align on the same straight line; the minor axis of the collecting blade and the axis of the handle bar form an approximately equal angle with the horizon which is smaller than the angle between the minor axis of the said chopping blade and the horizon; the center of gravity of the collecting blade being located near to the ground and well below the center of gravity of the chopping blade. 
     
     
         4 . A Single Handle Double Bladed Ice Removing Devices and methods for removing ice and snow from vehicle windshields comprising:
 a handle bar with two ends,   a chopping blade and,   a scrapping blade.   
     
     
         5 . The chopping blade of  claim 4  generally shaped like an elliptical arch or nearly an elliptical arch, securely positioned and mounted on the said handle bar with the chopping blade forming a large acute angle to the said scrapping blade but leading the scrapping blade during windshield scrapping; the chopping blade positioned ahead of the scrapping blade when viewed during scrapping with a small gap between the two blades; the chopping blade having an approximate shape like an inverted scoop with its concavity towards the windshield when viewed during scrapping; said chopping blade having an edge called the leading edge of the chopping blade which leads the scrapping journey of the windshield scrapper; the minor axis of the said chopping blade is offset from the axis of the handle bar and forms an angle with the windshield larger than the angle formed by the axis of the said handle bar, and minor axis of the chopping blade and the axis of the handle bar lie on the same vertical plane; the center of gravity of the chopping blade being located well above the windshield and the center of gravity of scrapping blade; the weight of the chopping blade in combination with the force exerted on the handle bar and its direction causing impact to chop ice during scrapping; the force exerted through the handle bar during ice scrapping passing through a point in between the chopping and scrapping edges so as to cause a torque each on the chopping edge and scrapping edge, the torque on the chopping edge causing a bumpy translatory ride for the chopping edge on the windshield during scrapping, and the torque on the scrapping edge increasing the frictional force on the windshield; the said chopping blade being designed to affect vibratory motion of the chopping blade to hammer on the ice during scrapping; and the said leading edge of the chopping blade being designed of hard plastics or heavy material such as metal so as to affect chopping of ice. 
     
     
         6 . The scrapping blade of  claim 4  being joined with the said chopping blade and securely positioned and mounted on the said handle bar with the scrapping blade forming the said acute angle to the chopping blade but lagging the chopping blade during scrapping; the scrapping blade having an approximately flat shape; said scrapping blade having an edge called the lagging edge of the scrapping blade which lags the leading edge of the chopping blade during scrapping journey of the windshield scrapper; the minor axis of the said scrapping blade and the axis of the handle bar forms an angle in the range of 10 to 30 degrees; the center of gravity of the scrapping blade being located near to the windshield and well below the center of gravity of the chopping blade.