Friction Pad on Portable Handheld Electronic Device

Abstract

A frictional pad is adhered to a handheld electronic device and disposable and held in a non-adhesive, non-slip fashion on an upward facing support surface. The frictional pad includes a polyurethane dome adhered to the handheld electronic device by the adhesive film. The dome has a broad, flat shape with an outfacing surface facing the upward facing support surface. The outfacing surface of the dome contacts the upward facing support surface and is tacky to releasably hold the handheld electronic device to the upward facing support surface.

1 . A frictional pad device configured to be adhered to a handheld electronic device and disposable on an upward facing support surface to hold the handheld electronic device on the upward facing support surface in a non-adhesive, non-slip fashion, the frictional pad device comprising:
 a) an adhesive film configured to adhere to a surface of the handheld electronic device;   b) a polyurethane dome affixed to the adhesive film and configured to adhere to the handheld electronic device by the adhesive film;   c) the dome being broad and flat, and having an outfacing surface;   d) the outfacing surface of the dome capable of contacting the upward facing support surface and being tacky and capable of releasably holding the handheld electronic device to the upward facing support surface; and   e) the polyurethane dome being formed by polyol and catalyst in a ratio of between 0.63 and 0.85.   
     
     
         2 . The device in accordance with  claim 1 , wherein the dome has a hardness between 10 and 35 Shore D. 
     
     
         3 . The device in accordance with  claim 1 , wherein the outfacing surface of the dome has a coefficient of friction of between 0.3 and 0.1 in accordance with ASTM D 1894. 
     
     
         4 . The device in accordance with  claim 1 , wherein the dome is translucent or transparent; and further comprising a graphic layer disposed between the adhesive film and the dome and visible through the dome. 
     
     
         5 . The device in accordance with  claim 4 , further comprising:
 a film with the adhesive film on one side; and   the graphic layer printed on the other side.   
     
     
         6 . The device in accordance with  claim 4 , wherein the graphic layer further comprises an etched metallic layer. 
     
     
         7 . The device in accordance with  claim 4 , further comprising:
 a substrate with the adhesive film on one side and the graphic layer printed on the other side; and   the substrate is at least translucent so that the entire pad except for the graphic layer is translucent or transparent.   
     
     
         8 . The device in accordance with  claim 1 , wherein the pad has a thickness between the outfacing surface and the adhesive film of between 1-2 mm. 
     
     
         9 . The device in accordance with  claim 1 , wherein the outfacing surface of the dome is surrounded by a radius perimeter and is flat and smooth and continuous between the radius perimeter. 
     
     
         10 . The device in accordance with  claim 1 , wherein a strength of an adhesive bond between the adhesive film of the pad and the handheld electronic device is greater than a tacky cling between the outfacing surface of the pad and the upward facing support surface. 
     
     
         11 . The device in accordance with  claim 1 , wherein a contact surface between the adhesive layer of the pad and the handheld electronic device is greater than the outfacing surface of the pad configured to contact the upward facing support surface. 
     
     
         12 . The device in accordance with  claim 1 , wherein a contact surface between the adhesive layer of the pad has a perimeter greater than and circumscribing a perimeter of the outfacing surface of the pad configured to contact the upward facing support surface. 
     
     
         13 . The device in accordance with  claim 1 , wherein the dome has a rectangular shape. 
     
     
         14 . The device in accordance with  claim 1 , wherein the dome has a circular shape. 
     
     
         15 . A frictional pad device configured to be adhered to a handheld electronic device and disposable on an upward facing support surface to hold the handheld electronic device on the upward facing support surface in a non-adhesive, non-slip fashion, the frictional pad device comprising:
 a) an adhesive film configured to adhere to a surface of the handheld electronic device;   b) a polyurethane dome configured to adhere to the handheld electronic device by the adhesive film;   c) the dome having an outfacing surface capable of facing the upward facing support surface;   d) the outfacing surface capable of contacting the upward facing support surface and being tacky and capable of releasably holding the handheld electronic device to the upward facing support surface;   e) the polyurethane dome includes a polyurethane material being formed by a polyol and a catalyst in a ratio of 0.63 to 0.85;   f) the dome being translucent or transparent;   g) a graphic layer disposed between the adhesive film and the dome and visible through the dome;   h) the outfacing surface of the dome having a coefficient of friction of between 0.3 and 0.1 in accordance with ASTM D 1894;   i) the dome having a hardness between 12 and 21 Shore D; and   j) the pad has a thickness between the outfacing surface and the adhesive film of between 1-2 mm.   
     
     
         16 . The device in accordance with  claim 15 , further comprising:
 a film with the adhesive film on one side and the graphic layer printed on the other side.   
     
     
         17 . The device in accordance with  claim 15 , further comprising:
 a substrate with the adhesive film on one side and the graphic layer printed on the other side; and   the substrate is translucent or transparent so that the entire pad except for the graphic layer is at least translucent.   
     
     
         18 . A frictional pad, comprising:
 a) an adhesive film capable of being adhered to a surface of a handheld electronic device;   b) a polyurethane dome affixed to the adhesive film and capable of being adhered to the handheld electronic device by the adhesive film;   c) the dome having an outfacing surface capable of facing an upward facing support surface;   d) the outfacing surface of the dome capable of contacting the upward facing support surface and being tacky and capable of releasably holding the handheld electronic device to the upward facing support surface;   e) the outfacing surface of the dome having a coefficient of friction of between 0.3 and 0.1 in accordance with ASTM D 1894; and   f) the dome having a hardness between 12 and 21 Shore D.   
     
     
         19 . The device in accordance with  claim 18 , further comprising:
 the polyurethane dome being formed by polyol and catalyst in a ratio of between 0.63 and 0.85.